Better 3d falling

-Sand now can fall from and to the direction of gravity
-Registers every FallingBlock block to a different value. It doesnt
quite work though
-Removed unused code

.gitignore

@@ -30,6 +30,8 @@ build_packages/*
 !build_packages/NSIS
 build_packages/NSIS/*
 !build_packages/NSIS/ProgressiaInstaller.nsi
+!build_packages/NSIS/logo.ico
+!build_packages/NSIS/left_side.bmp
 
 # ... and except build_packages/DEB/template
 !build_packages/DEB

README.md

@@ -16,7 +16,7 @@ temperature mechanics and a parallelism-capable server.
 - GNU/Linux (x64, arm32 or arm64), Windows XP or later (x64 or x86) or MacOS (x64)
 - Java 8 or later
 - OpenGL 2.1 or later
-- Probably at least 4 GiB RAM
+- Probably about 0.5 GiB RAM
 - Less than 1 GiB of storage space
 
 See [Build Guide](docs/building/BuildGuide.md) for compilation requirements.

buildPackages.sh

@@ -128,6 +128,7 @@ buildWindowsInstaller() {
     {
         cp -r 'build/libs/lib'            'build_packages/NSIS/lib'            &&
         cp    'build/libs/Progressia.jar' 'build_packages/NSIS/Progressia.jar' &&
+        cp    'LICENSE'                   'build_packages/NSIS/LICENSE.txt'    &&
         echo "------ NSIS ------"                                              &&
         makensis "$configurationFile"                                          &&
         echo "---- NSIS END ----"                                              &&
@@ -144,6 +145,9 @@ buildWindowsInstaller() {
         if [ -e 'build_packages/NSIS/Progressia.jar' ]; then
             rm 'build_packages/NSIS/Progressia.jar'
         fi
+        if [ -e 'build_packages/NSIS/LICENSE.txt' ]; then
+            rm 'build_packages/NSIS/LICENSE.txt'
+        fi
         echo "Cleaned up"
     } || {
         echoerr "Could not clean up after building Windows installer"

build_packages/NSIS/ProgressiaInstaller.nsi

@@ -10,16 +10,32 @@
 ;--------------------------------
 ;General
 
+  !define PROJECT_NAME "Progressia"
+
+  ; MUI Settings / Icons
+  !define MUI_ICON "logo.ico"
+  ;!define MUI_UNICON ;Uninstall icon
+
+  ; MUI Settings / Header
+  ; !define MUI_HEADERIMAGE
+  ; !define MUI_HEADERIMAGE_RIGHT
+  ; !define MUI_HEADERIMAGE_BITMAP "${NSISDIR}\Contrib\Graphics\Header\orange-r-nsis.bmp"
+  ; !define MUI_HEADERIMAGE_UNBITMAP "${NSISDIR}\Contrib\Graphics\Header\orange-uninstall-r-nsis.bmp"
+
+  ; MUI Settings / Wizard
+  !define MUI_WELCOMEFINISHPAGE_BITMAP "left_side.bmp"
+  !define MUI_UNWELCOMEFINISHPAGE_BITMAP "left_side.bmp"
+
   ;Name and file
-  Name "Progressia"
-  OutFile "ProgressiaInstaller.exe"
+  Name "${PROJECT_NAME}"
+  OutFile "${PROJECT_NAME}Installer.exe"
   Unicode True
 
   ;Default installation folder
-  InstallDir "$PROGRAMFILES\Progressia"
+  InstallDir "$PROGRAMFILES\${PROJECT_NAME}"
 
   ;Get installation folder from registry if available
-  InstallDirRegKey HKLM "Software\Progressia" "Install_Dir"
+  InstallDirRegKey HKLM "Software\${PROJECT_NAME}" ""
 
   ;Request application privileges for Windows Vista
   RequestExecutionLevel admin
@@ -33,14 +49,18 @@
 ;Pages
 
   !insertmacro MUI_PAGE_WELCOME
-  ;!insertmacro MUI_PAGE_LICENSE "${NSISDIR}\Docs\Modern UI\License.txt"
+  !insertmacro MUI_PAGE_LICENSE "LICENSE.txt"
   !insertmacro MUI_PAGE_COMPONENTS
   !insertmacro MUI_PAGE_DIRECTORY
   !insertmacro MUI_PAGE_INSTFILES
+  !define MUI_FINISHPAGE_RUN
+  !define MUI_FINISHPAGE_RUN_TEXT "Start ${PROJECT_NAME}"
+  !define MUI_FINISHPAGE_RUN_FUNCTION "LaunchLink"
   !insertmacro MUI_PAGE_FINISH
 
   !insertmacro MUI_UNPAGE_WELCOME
   !insertmacro MUI_UNPAGE_CONFIRM
+  !insertmacro MUI_UNPAGE_COMPONENTS
   !insertmacro MUI_UNPAGE_INSTFILES
   !insertmacro MUI_UNPAGE_FINISH
 
@@ -52,12 +72,15 @@
 ;--------------------------------
 ;Installer Sections
 
-Section "Install Progressia" SecDummy
+Section "Install ${PROJECT_NAME}" SEC0000
 
+  SectionIn RO ;Make it read-only
   SetOutPath "$INSTDIR"
+  SetOverwrite on
 
   ;Files
   File Progressia.jar
+  File logo.ico
   File /r lib
 
   ;Store installation folder
@@ -65,22 +88,24 @@ Section "Install Progressia" SecDummy
 
   ;Create uninstaller
 
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Progressia" "DisplayName" "Progressia (remove only)"
-  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Progressia" "UninstallString" "$INSTDIR\Uninstall.exe" 
+  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${PROJECT_NAME}" "DisplayName" "${PROJECT_NAME} (remove only)"
+  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${PROJECT_NAME}" "UninstallString" "$INSTDIR\Uninstall.exe"
   WriteUninstaller "$INSTDIR\Uninstall.exe"
 
 SectionEnd
 
-;--------------------------------
-;Descriptions
+Section "Create Desktop Shortcut" SEC0001
+  SetOutPath "$APPDATA\${PROJECT_NAME}"
+  CreateShortCut "$DESKTOP\${PROJECT_NAME}.lnk" "$INSTDIR\${PROJECT_NAME}.jar" "" "$INSTDIR\logo.ico"
+SectionEnd
 
-  ;Language strings
-  LangString DESC_SecDummy ${LANG_ENGLISH} "A test section."
+Section "Start Menu Shortcuts" SEC0002
 
-  ;Assign language strings to sections
-  !insertmacro MUI_FUNCTION_DESCRIPTION_BEGIN
-    !insertmacro MUI_DESCRIPTION_TEXT ${SecDummy} $(DESC_SecDummy)
-  !insertmacro MUI_FUNCTION_DESCRIPTION_END
+  CreateDirectory "$SMPROGRAMS\${PROJECT_NAME}"
+  CreateShortcut "$SMPROGRAMS\${PROJECT_NAME}\Uninstall.lnk" "$INSTDIR\Uninstall.exe"
+  CreateShortcut "$SMPROGRAMS\${PROJECT_NAME}\${PROJECT_NAME}.lnk" "$INSTDIR\${PROJECT_NAME}.jar" "" "$INSTDIR\logo.ico"
+
+SectionEnd
 
 ;--------------------------------
 ;Uninstaller Section
@@ -92,9 +117,45 @@ Section "Uninstall"
   Delete $INSTDIR\Uninstall.exe
   Delete $INSTDIR\Progressia.jar
   Delete $INSTDIR\lib\*.*
+  Delete $INSTDIR\logo.ico
 
-  RMDir /r "$INSTDIR"
-  DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Progressia"
-  DeleteRegKey HKLM "Software\Progressia"
+  RMDir $INSTDIR\lib
+
+  Delete $DESKTOP\${PROJECT_NAME}.lnk
+
+  Delete $SMPROGRAMS\${PROJECT_NAME}\Uninstall.lnk
+  Delete $SMPROGRAMS\${PROJECT_NAME}\${PROJECT_NAME}.lnk
+
+  RMDir $INSTDIR
+
+  RMDir /r $SMPROGRAMS\${PROJECT_NAME}
+
+  DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\${PROJECT_NAME}"
+  DeleteRegKey HKLM "Software\${PROJECT_NAME}"
 
 SectionEnd
+
+Section "un.Remove user data"
+
+  RMDir /r "$APPDATA\${PROJECT_NAME}"
+
+SectionEnd
+
+;--------------------------------
+;Functions
+
+Function LaunchLink
+  SetOutPath "$APPDATA\${PROJECT_NAME}"
+  ExecShell "" "$INSTDIR\${PROJECT_NAME}.jar"
+FunctionEnd
+
+;--------------------------------
+;Descriptions
+
+  ;Language strings
+  LangString DESC_SecDummy ${LANG_ENGLISH} "Install ${PROJECT_NAME}."
+
+  ;Assign language strings to sections
+  !insertmacro MUI_FUNCTION_DESCRIPTION_BEGIN
+  !insertmacro MUI_DESCRIPTION_TEXT ${SEC0000} $(DESC_SecDummy)
+  !insertmacro MUI_FUNCTION_DESCRIPTION_END

docs/CONTRIBUTING.md

@@ -0,0 +1,69 @@
+# Contributing Guidelines
+
+This document lists conventions adopted by Progressia developers.
+
+## git
+
+### Branches
+Progressia repository contains a `master` branch and several "feature" branches.
+
+`master` is expected to contain a version of the game suitable for demonstration and forking/branching. Do not commit directly to `master` without OLEGSHA's approval.
+- `master` must always correctly build without compiler warnings (see below).
+- `master` must always pass all unit tests.
+- `master` must always be able to launch successfully.
+- `master` must always only contain working features.
+- `master` should not contain excessive debug code.
+- `master` must always have its code and filenames formatted (see below).
+
+"Feature" branches are branches dedicated to the development of a single feature. When the feature reaches completion the branch is merged into `master` and removed. Intermediate merges into `master` may occur when some fitting milestone is reached. Intermediate merges from `master` may be done as necessary. Merges between "feature" branches should generally be avoided.
+
+When beginning work on a new feature, create a new branch based on `master` (or on another "feature" branch if absolutely necessary). Use `all-small-with-dashes` to name the branch: `add-trees` or `rebalance-plastics` are good names. Do not fix unrelated bugs or work on unrelated features in a "feature" branch - create a new one, switch to an existing one or commit directly to `master` if the changes are small enough.
+
+"Feature" branches may not be formatted properly. Formatting is required before merging into `master` or other branches.
+
+### Commits
+- Commits must leave the branch in a state that builds without compiler warnings (see below).
+- Changes should be grouped in commits semantically. Avoid committing many small related changes in sequence; if necessary, wait and accumulate them. Avoid committing unrelated changes together; if necessary, split staged changes into several commits. This should normally result in about 1-2 commits for a day's work.
+- Commit bulk changes (renaming, formatting, ...) separately. Don't ever commit whitespace changes outside formatting commits.
+- Message format:
+
+```
+Short description of changes
+<empty line>
+- Enumeration of changes
+  - Nest when appropriate
+- Use dashes only
+- List not needed for small commits
+```
+
+Example:
+
+```
+Changed packages for relations, renamed Face to ShapePart
+
+- Added BlockRelation as an abstract superclass to existing relations
+  - Must be given an absolute "up" direction before use
+- Moved AbsFace, AbsRelation and BlockRelation to .world.rels
+- Renamed Face to ShapePart to reduce confusion with AbsFace
+```
+
+- Only commit changes described in the commit message. Please double-check staged files before committing.
+- Avoid merge conflicts. Pull before committing.
+- Better sign commits than not. See: [git](https://git-scm.com/book/en/v2/Git-Tools-Signing-Your-Work), [GitHub](https://docs.github.com/en/github/authenticating-to-github/managing-commit-signature-verification).
+
+## Code
+
+### Warnings
+Make sure that all committed code contains no compiler warnings. This specifically includes unused imports, unused private members, missing `@Override`s and warnings related to generics.
+
+Warnings about unknown tokens in `@SuppressWarnings` are temporarily ignored. Please disable them in your IDE.
+
+### Code Style
+Formatting code is important.
+
+- The format is specified within the files inside `/templates_and_presets/eclipse_ide`. Import the specifications into Eclipse or IntelliJ IDEA and use the IDEs' format feature. Alternatively format the code manually in accordance with existing files.
+- Only use tabs for indentation. Never indent with spaces even when wrapping lines. This is to ensure that indentation does not break when tab width is different.
+- Don't use `I` prefix for interfaces (not `IDoable` but `Doable`).
+- Prioritize readability over compactness. Do not hesitate to use (very) long identifiers if they aid comprehension.
+- Document all mathematics unless it is trivial, especially when using math notation for variable names.
+- Use proper English when writing comments. Avoid boxes in comments. Use `//` for single-line comments.

src/main/java/kdotjpg/opensimplex2/areagen/OpenSimplex2S.java

@@ -45,7 +45,7 @@ public class OpenSimplex2S {
 			source[i] = i;
 		for (int i = PSIZE - 1; i >= 0; i--) {
 			seed = seed * 6364136223846793005L + 1442695040888963407L;
-			int r = (int)((seed + 31) % (i + 1));
+			int r = (int) ((seed + 31) % (i + 1));
 			if (r < 0)
 				r += (i + 1);
 			perm[i] = source[r];
@@ -72,9 +72,9 @@ public class OpenSimplex2S {
 	}
 
 	/**
-	 * 2D SuperSimplex noise, with Y pointing down the main diagonal.
-	 * Might be better for a 2D sandbox style game, where Y is vertical.
-	 * Probably slightly less optimal for heightmaps or continent maps.
+	 * 2D SuperSimplex noise, with Y pointing down the main diagonal. Might be
+	 * better for a 2D sandbox style game, where Y is vertical. Probably
+	 * slightly less optimal for heightmaps or continent maps.
 	 */
 	public double noise2_XBeforeY(double x, double y) {
 
@@ -86,8 +86,8 @@ public class OpenSimplex2S {
 	}
 
 	/**
-	 * 2D SuperSimplex noise base.
-	 * Lookup table implementation inspired by DigitalShadow.
+	 * 2D SuperSimplex noise base. Lookup table implementation inspired by
+	 * DigitalShadow.
 	 */
 	private double noise2_Base(double xs, double ys) {
 		double value = 0;
@@ -97,11 +97,8 @@ public class OpenSimplex2S {
 		double xsi = xs - xsb, ysi = ys - ysb;
 
 		// Index to point list
-		int a = (int)(xsi + ysi);
-		int index =
-			(a << 2) |
-			(int)(xsi - ysi / 2 + 1 - a / 2.0) << 3 |
-			(int)(ysi - xsi / 2 + 1 - a / 2.0) << 4;
+		int a = (int) (xsi + ysi);
+		int index = (a << 2) | (int) (xsi - ysi / 2 + 1 - a / 2.0) << 3 | (int) (ysi - xsi / 2 + 1 - a / 2.0) << 4;
 
 		double ssi = (xsi + ysi) * -0.211324865405187;
 		double xi = xsi + ssi, yi = ysi + ssi;
@@ -112,7 +109,8 @@ public class OpenSimplex2S {
 
 			double dx = xi + c.dx, dy = yi + c.dy;
 			double attn = 2.0 / 3.0 - dx * dx - dy * dy;
-			if (attn <= 0) continue;
+			if (attn <= 0)
+				continue;
 
 			int pxm = (xsb + c.xsv) & PMASK, pym = (ysb + c.ysv) & PMASK;
 			Grad2 grad = permGrad2[perm[pxm] ^ pym];
@@ -126,15 +124,16 @@ public class OpenSimplex2S {
 	}
 
 	/**
-	 * 3D Re-oriented 8-point BCC noise, classic orientation
-	 * Proper substitute for what 3D SuperSimplex would be,
-	 * in light of Forbidden Formulae.
-	 * Use noise3_XYBeforeZ or noise3_XZBeforeY instead, wherever appropriate.
+	 * 3D Re-oriented 8-point BCC noise, classic orientation Proper substitute
+	 * for what 3D SuperSimplex would be, in light of Forbidden Formulae. Use
+	 * noise3_XYBeforeZ or noise3_XZBeforeY instead, wherever appropriate.
 	 */
 	public double noise3_Classic(double x, double y, double z) {
 
-		// Re-orient the cubic lattices via rotation, to produce the expected look on cardinal planar slices.
-		// If texturing objects that don't tend to have cardinal plane faces, you could even remove this.
+		// Re-orient the cubic lattices via rotation, to produce the expected
+		// look on cardinal planar slices.
+		// If texturing objects that don't tend to have cardinal plane faces,
+		// you could even remove this.
 		// Orthonormal rotation. Not a skew transform.
 		double r = (2.0 / 3.0) * (x + y + z);
 		double xr = r - x, yr = r - y, zr = r - z;
@@ -145,15 +144,17 @@ public class OpenSimplex2S {
 
 	/**
 	 * 3D Re-oriented 8-point BCC noise, with better visual isotropy in (X, Y).
-	 * Recommended for 3D terrain and time-varied animations.
-	 * The Z coordinate should always be the "different" coordinate in your use case.
-	 * If Y is vertical in world coordinates, call noise3_XYBeforeZ(x, z, Y) or use noise3_XZBeforeY.
-	 * If Z is vertical in world coordinates, call noise3_XYBeforeZ(x, y, Z).
-	 * For a time varied animation, call noise3_XYBeforeZ(x, y, T).
+	 * Recommended for 3D terrain and time-varied animations. The Z coordinate
+	 * should always be the "different" coordinate in your use case. If Y is
+	 * vertical in world coordinates, call noise3_XYBeforeZ(x, z, Y) or use
+	 * noise3_XZBeforeY. If Z is vertical in world coordinates, call
+	 * noise3_XYBeforeZ(x, y, Z). For a time varied animation, call
+	 * noise3_XYBeforeZ(x, y, T).
 	 */
 	public double noise3_XYBeforeZ(double x, double y, double z) {
 
-		// Re-orient the cubic lattices without skewing, to make X and Y triangular like 2D.
+		// Re-orient the cubic lattices without skewing, to make X and Y
+		// triangular like 2D.
 		// Orthonormal rotation. Not a skew transform.
 		double xy = x + y;
 		double s2 = xy * -0.211324865405187;
@@ -167,20 +168,23 @@ public class OpenSimplex2S {
 
 	/**
 	 * 3D Re-oriented 8-point BCC noise, with better visual isotropy in (X, Z).
-	 * Recommended for 3D terrain and time-varied animations.
-	 * The Y coordinate should always be the "different" coordinate in your use case.
-	 * If Y is vertical in world coordinates, call noise3_XZBeforeY(x, Y, z).
-	 * If Z is vertical in world coordinates, call noise3_XZBeforeY(x, Z, y) or use noise3_XYBeforeZ.
-	 * For a time varied animation, call noise3_XZBeforeY(x, T, y) or use noise3_XYBeforeZ.
+	 * Recommended for 3D terrain and time-varied animations. The Y coordinate
+	 * should always be the "different" coordinate in your use case. If Y is
+	 * vertical in world coordinates, call noise3_XZBeforeY(x, Y, z). If Z is
+	 * vertical in world coordinates, call noise3_XZBeforeY(x, Z, y) or use
+	 * noise3_XYBeforeZ. For a time varied animation, call noise3_XZBeforeY(x,
+	 * T, y) or use noise3_XYBeforeZ.
 	 */
 	public double noise3_XZBeforeY(double x, double y, double z) {
 
-		// Re-orient the cubic lattices without skewing, to make X and Z triangular like 2D.
+		// Re-orient the cubic lattices without skewing, to make X and Z
+		// triangular like 2D.
 		// Orthonormal rotation. Not a skew transform.
 		double xz = x + z;
 		double s2 = xz * -0.211324865405187;
 		double yy = y * 0.577350269189626;
-		double xr = x + s2 - yy; double zr = z + s2 - yy;
+		double xr = x + s2 - yy;
+		double zr = z + s2 - yy;
 		double yr = xz * 0.577350269189626 + yy;
 
 		// Evaluate both lattices to form a BCC lattice.
@@ -188,10 +192,10 @@ public class OpenSimplex2S {
 	}
 
 	/**
-	 * Generate overlapping cubic lattices for 3D Re-oriented BCC noise.
-	 * Lookup table implementation inspired by DigitalShadow.
-	 * It was actually faster to narrow down the points in the loop itself,
-	 * than to build up the index with enough info to isolate 8 points.
+	 * Generate overlapping cubic lattices for 3D Re-oriented BCC noise. Lookup
+	 * table implementation inspired by DigitalShadow. It was actually faster to
+	 * narrow down the points in the loop itself, than to build up the index
+	 * with enough info to isolate 8 points.
 	 */
 	private double noise3_BCC(double xr, double yr, double zr) {
 
@@ -199,9 +203,11 @@ public class OpenSimplex2S {
 		int xrb = fastFloor(xr), yrb = fastFloor(yr), zrb = fastFloor(zr);
 		double xri = xr - xrb, yri = yr - yrb, zri = zr - zrb;
 
-		// Identify which octant of the cube we're in. This determines which cell
-		// in the other cubic lattice we're in, and also narrows down one point on each.
-		int xht = (int)(xri + 0.5), yht = (int)(yri + 0.5), zht = (int)(zri + 0.5);
+		// Identify which octant of the cube we're in. This determines which
+		// cell
+		// in the other cubic lattice we're in, and also narrows down one point
+		// on each.
+		int xht = (int) (xri + 0.5), yht = (int) (yri + 0.5), zht = (int) (zri + 0.5);
 		int index = (xht << 0) | (yht << 1) | (zht << 2);
 
 		// Point contributions
@@ -230,9 +236,9 @@ public class OpenSimplex2S {
 	 */
 
 	/**
-	 * Generate the 2D noise over a large area.
-	 * Propagates by flood-fill instead of iterating over a range.
-	 * Results may occasionally slightly exceed [-1, 1] due to the grid-snapped pre-generated kernel.
+	 * Generate the 2D noise over a large area. Propagates by flood-fill instead
+	 * of iterating over a range. Results may occasionally slightly exceed [-1,
+	 * 1] due to the grid-snapped pre-generated kernel.
 	 */
 	public void generate2(GenerateContext2D context, double[][] buffer, int x0, int y0) {
 		int height = buffer.length;
@@ -241,11 +247,12 @@ public class OpenSimplex2S {
 	}
 
 	/**
-	 * Generate the 2D noise over a large area.
-	 * Propagates by flood-fill instead of iterating over a range.
-	 * Results may occasionally slightly exceed [-1, 1] due to the grid-snapped pre-generated kernel.
+	 * Generate the 2D noise over a large area. Propagates by flood-fill instead
+	 * of iterating over a range. Results may occasionally slightly exceed [-1,
+	 * 1] due to the grid-snapped pre-generated kernel.
 	 */
-	public void generate2(GenerateContext2D context, double[][] buffer, int x0, int y0, int width, int height, int skipX, int skipY) {
+	public void generate2(GenerateContext2D context, double[][] buffer, int x0, int y0, int width, int height,
+			int skipX, int skipY) {
 		Queue<AreaGenLatticePoint2D> queue = new LinkedList<AreaGenLatticePoint2D>();
 		Set<AreaGenLatticePoint2D> seen = new HashSet<AreaGenLatticePoint2D>();
 
@@ -260,16 +267,19 @@ public class OpenSimplex2S {
 		// - Much faster than computing the kernel equation every time.
 		// You can remove these lines if you find it's the opposite for you.
 		// You'll have to double the bounds again in GenerateContext2D
-		kernel = new double[scaledRadiusY * 2][/*scaledRadiusX * 2*/];
+		kernel = new double[scaledRadiusY * 2][/* scaledRadiusX * 2 */];
 		for (int yy = 0; yy < scaledRadiusY; yy++) {
 			kernel[2 * scaledRadiusY - yy - 1] = kernel[yy] = (double[]) context.kernel[yy].clone();
 		}
 
 		// Get started with one point/vertex.
-		// For some lattices, you might need to try a handful of points in the cell,
-		// or flip a couple of coordinates, to guarantee it or a neighbor contributes.
+		// For some lattices, you might need to try a handful of points in the
+		// cell,
+		// or flip a couple of coordinates, to guarantee it or a neighbor
+		// contributes.
 		// For An* lattices, the base coordinate seems fine.
-		double x0f = x0Skipped * context.xFrequency; double y0f = y0Skipped * context.yFrequency;
+		double x0f = x0Skipped * context.xFrequency;
+		double y0f = y0Skipped * context.yFrequency;
 		double x0s = context.orientation.s00 * x0f + context.orientation.s01 * y0f;
 		double y0s = context.orientation.s10 * x0f + context.orientation.s11 * y0f;
 		int x0sb = fastFloor(x0s), y0sb = fastFloor(y0s);
@@ -287,11 +297,16 @@ public class OpenSimplex2S {
 			Grad2 grad = context.orientation.gradients[perm[perm[pxm] ^ pym]];
 			double gx = grad.dx * context.xFrequency;
 			double gy = grad.dy * context.yFrequency;
-			double gOff = 0.5 * (gx + gy); // to correct for (0.5, 0.5)-offset kernel
+			double gOff = 0.5 * (gx + gy); // to correct for (0.5, 0.5)-offset
+											// kernel
 
 			// Contribution kernel bounds
-			int yy0 = destPointY - scaledRadiusY; if (yy0 < y0Skipped) yy0 = y0Skipped;
-			int yy1 = destPointY + scaledRadiusY; if (yy1 > y0 + height) yy1 = y0 + height;
+			int yy0 = destPointY - scaledRadiusY;
+			if (yy0 < y0Skipped)
+				yy0 = y0Skipped;
+			int yy1 = destPointY + scaledRadiusY;
+			if (yy1 > y0 + height)
+				yy1 = y0 + height;
 
 			// For each row of the contribution circle,
 			for (int yy = yy0; yy < yy1; yy++) {
@@ -300,16 +315,22 @@ public class OpenSimplex2S {
 
 				// Set up bounds so we only loop over what we need to
 				int thisScaledRadiusX = context.kernelBounds[ky];
-				int xx0 = destPointX - thisScaledRadiusX; if (xx0 < x0Skipped) xx0 = x0Skipped;
-				int xx1 = destPointX + thisScaledRadiusX; if (xx1 > x0 + width) xx1 = x0 + width;
+				int xx0 = destPointX - thisScaledRadiusX;
+				if (xx0 < x0Skipped)
+					xx0 = x0Skipped;
+				int xx1 = destPointX + thisScaledRadiusX;
+				if (xx1 > x0 + width)
+					xx1 = x0 + width;
 
 				// For each point on that row
 				for (int xx = xx0; xx < xx1; xx++) {
 					int dx = xx - destPointX;
 					int kx = dx + scaledRadiusX;
 
-					// gOff accounts for our choice to offset the pre-generated kernel by (0.5, 0.5) to avoid the zero center.
-					// I found almost no difference in performance using gOff vs not (under 1ns diff per value on my system)
+					// gOff accounts for our choice to offset the pre-generated
+					// kernel by (0.5, 0.5) to avoid the zero center.
+					// I found almost no difference in performance using gOff vs
+					// not (under 1ns diff per value on my system)
 					double extrapolation = gx * dx + gy * dy + gOff;
 					buffer[yy - y0][xx - x0] += kernel[ky][kx] * extrapolation;
 
@@ -318,13 +339,14 @@ public class OpenSimplex2S {
 
 			// For each neighbor of the point
 			for (int i = 0; i < NEIGHBOR_MAP_2D.length; i++) {
-				AreaGenLatticePoint2D neighbor = new AreaGenLatticePoint2D(context,
-						point.xsv + NEIGHBOR_MAP_2D[i][0], point.ysv + NEIGHBOR_MAP_2D[i][1]);
+				AreaGenLatticePoint2D neighbor = new AreaGenLatticePoint2D(context, point.xsv + NEIGHBOR_MAP_2D[i][0],
+						point.ysv + NEIGHBOR_MAP_2D[i][1]);
 
 				// If it's in range of the buffer region and not seen before
-				if (neighbor.destPointX + scaledRadiusX >= x0Skipped && neighbor.destPointX - scaledRadiusX <= x0 + width - 1
-						&& neighbor.destPointY + scaledRadiusY >= y0Skipped && neighbor.destPointY - scaledRadiusY <= y0 + height - 1
-						&& !seen.contains(neighbor)) {
+				if (neighbor.destPointX + scaledRadiusX >= x0Skipped
+						&& neighbor.destPointX - scaledRadiusX <= x0 + width - 1
+						&& neighbor.destPointY + scaledRadiusY >= y0Skipped
+						&& neighbor.destPointY - scaledRadiusY <= y0 + height - 1 && !seen.contains(neighbor)) {
 
 					// Add it to the queue so we can process it at some point
 					queue.add(neighbor);
@@ -337,9 +359,9 @@ public class OpenSimplex2S {
 	}
 
 	/**
-	 * Generate the 3D noise over a large area/volume.
-	 * Propagates by flood-fill instead of iterating over a range.
-	 * Results may occasionally slightly exceed [-1, 1] due to the grid-snapped pre-generated kernel.
+	 * Generate the 3D noise over a large area/volume. Propagates by flood-fill
+	 * instead of iterating over a range. Results may occasionally slightly
+	 * exceed [-1, 1] due to the grid-snapped pre-generated kernel.
 	 */
 	public void generate3(GenerateContext3D context, double[][][] buffer, int x0, int y0, int z0) {
 		int depth = buffer.length;
@@ -349,11 +371,12 @@ public class OpenSimplex2S {
 	}
 
 	/**
-	 * Generate the 3D noise over a large area/volume.
-	 * Propagates by flood-fill instead of iterating over a range.
-	 * Results may occasionally slightly exceed [-1, 1] due to the grid-snapped pre-generated kernel.
+	 * Generate the 3D noise over a large area/volume. Propagates by flood-fill
+	 * instead of iterating over a range. Results may occasionally slightly
+	 * exceed [-1, 1] due to the grid-snapped pre-generated kernel.
 	 */
-	public void generate3(GenerateContext3D context, double[][][] buffer, int x0, int y0, int z0, int width, int height, int depth, int skipX, int skipY, int skipZ) {
+	public void generate3(GenerateContext3D context, double[][][] buffer, int x0, int y0, int z0, int width, int height,
+			int depth, int skipX, int skipY, int skipZ) {
 		Queue<AreaGenLatticePoint3D> queue = new LinkedList<AreaGenLatticePoint3D>();
 		Set<AreaGenLatticePoint3D> seen = new HashSet<AreaGenLatticePoint3D>();
 
@@ -365,8 +388,10 @@ public class OpenSimplex2S {
 
 		// Quaternion multiplication for rotation.
 		// https://blog.molecular-matters.com/2013/05/24/a-faster-quaternion-vector-multiplication/
-		double qx = context.orientation.qx, qy = context.orientation.qy, qz = context.orientation.qz, qw = context.orientation.qw;
-		double x0f = x0Skipped * context.xFrequency, y0f = y0Skipped * context.yFrequency, z0f = z0Skipped * context.zFrequency;
+		double qx = context.orientation.qx, qy = context.orientation.qy, qz = context.orientation.qz,
+				qw = context.orientation.qw;
+		double x0f = x0Skipped * context.xFrequency, y0f = y0Skipped * context.yFrequency,
+				z0f = z0Skipped * context.zFrequency;
 		double tx = 2 * (qy * z0f - qz * y0f);
 		double ty = 2 * (qz * x0f - qx * z0f);
 		double tz = 2 * (qx * y0f - qy * x0f);
@@ -392,11 +417,16 @@ public class OpenSimplex2S {
 			double gx = grad.dx * context.xFrequency;
 			double gy = grad.dy * context.yFrequency;
 			double gz = grad.dz * context.zFrequency;
-			double gOff = 0.5 * (gx + gy + gz); // to correct for (0.5, 0.5, 0.5)-offset kernel
+			double gOff = 0.5 * (gx + gy + gz); // to correct for (0.5, 0.5,
+												// 0.5)-offset kernel
 
 			// Contribution kernel bounds.
-			int zz0 = destPointZ - scaledRadiusZ; if (zz0 < z0Skipped) zz0 = z0Skipped;
-			int zz1 = destPointZ + scaledRadiusZ; if (zz1 > z0 + depth) zz1 = z0 + depth;
+			int zz0 = destPointZ - scaledRadiusZ;
+			if (zz0 < z0Skipped)
+				zz0 = z0Skipped;
+			int zz1 = destPointZ + scaledRadiusZ;
+			if (zz1 > z0 + depth)
+				zz1 = z0 + depth;
 
 			// For each x/y slice of the contribution sphere,
 			for (int zz = zz0; zz < zz1; zz++) {
@@ -405,8 +435,12 @@ public class OpenSimplex2S {
 
 				// Set up bounds so we only loop over what we need to
 				int thisScaledRadiusY = context.kernelBoundsY[kz];
-				int yy0 = destPointY - thisScaledRadiusY; if (yy0 < y0Skipped) yy0 = y0Skipped;
-				int yy1 = destPointY + thisScaledRadiusY; if (yy1 > y0 + height) yy1 = y0 + height;
+				int yy0 = destPointY - thisScaledRadiusY;
+				if (yy0 < y0Skipped)
+					yy0 = y0Skipped;
+				int yy1 = destPointY + thisScaledRadiusY;
+				if (yy1 > y0 + height)
+					yy1 = y0 + height;
 
 				// For each row of the contribution circle,
 				for (int yy = yy0; yy < yy1; yy++) {
@@ -415,15 +449,21 @@ public class OpenSimplex2S {
 
 					// Set up bounds so we only loop over what we need to
 					int thisScaledRadiusX = context.kernelBoundsX[kz][ky];
-					int xx0 = destPointX - thisScaledRadiusX; if (xx0 < x0Skipped) xx0 = x0Skipped;
-					int xx1 = destPointX + thisScaledRadiusX; if (xx1 > x0 + width) xx1 = x0 + width;
+					int xx0 = destPointX - thisScaledRadiusX;
+					if (xx0 < x0Skipped)
+						xx0 = x0Skipped;
+					int xx1 = destPointX + thisScaledRadiusX;
+					if (xx1 > x0 + width)
+						xx1 = x0 + width;
 
 					// For each point on that row
 					for (int xx = xx0; xx < xx1; xx++) {
 						int dx = xx - destPointX;
 						int kx = dx + scaledRadiusX;
 
-						// gOff accounts for our choice to offset the pre-generated kernel by (0.5, 0.5, 0.5) to avoid the zero center.
+						// gOff accounts for our choice to offset the
+						// pre-generated kernel by (0.5, 0.5, 0.5) to avoid the
+						// zero center.
 						double extrapolation = gx * dx + gy * dy + gz * dz + gOff;
 						buffer[zz - z0][yy - y0][xx - x0] += kernel[kz][ky][kx] * extrapolation;
 
@@ -435,13 +475,16 @@ public class OpenSimplex2S {
 			for (int i = 0; i < NEIGHBOR_MAP_3D[0].length; i++) {
 				int l = point.lattice;
 				AreaGenLatticePoint3D neighbor = new AreaGenLatticePoint3D(context,
-						point.xsv + NEIGHBOR_MAP_3D[l][i][0], point.ysv + NEIGHBOR_MAP_3D[l][i][1], point.zsv + NEIGHBOR_MAP_3D[l][i][2], 1 ^ l);
+						point.xsv + NEIGHBOR_MAP_3D[l][i][0], point.ysv + NEIGHBOR_MAP_3D[l][i][1],
+						point.zsv + NEIGHBOR_MAP_3D[l][i][2], 1 ^ l);
 
 				// If it's in range of the buffer region and not seen before
-				if (neighbor.destPointX + scaledRadiusX >= x0Skipped && neighbor.destPointX - scaledRadiusX <= x0 + width - 1
-						&& neighbor.destPointY + scaledRadiusY >= y0Skipped && neighbor.destPointY - scaledRadiusY <= y0 + height - 1
-						&& neighbor.destPointZ + scaledRadiusZ >= z0Skipped && neighbor.destPointZ - scaledRadiusZ <= z0 + depth - 1
-						&& !seen.contains(neighbor)) {
+				if (neighbor.destPointX + scaledRadiusX >= x0Skipped
+						&& neighbor.destPointX - scaledRadiusX <= x0 + width - 1
+						&& neighbor.destPointY + scaledRadiusY >= y0Skipped
+						&& neighbor.destPointY - scaledRadiusY <= y0 + height - 1
+						&& neighbor.destPointZ + scaledRadiusZ >= z0Skipped
+						&& neighbor.destPointZ - scaledRadiusZ <= z0 + depth - 1 && !seen.contains(neighbor)) {
 
 					// Add it to the queue so we can process it at some point
 					queue.add(neighbor);
@@ -458,7 +501,7 @@ public class OpenSimplex2S {
 	 */
 
 	private static int fastFloor(double x) {
-		int xi = (int)x;
+		int xi = (int) x;
 		return x < xi ? xi - 1 : xi;
 	}
 
@@ -475,11 +518,35 @@ public class OpenSimplex2S {
 		for (int i = 0; i < 8; i++) {
 			int i1, j1, i2, j2;
 			if ((i & 1) == 0) {
-				if ((i & 2) == 0) { i1 = -1; j1 = 0; } else { i1 = 1; j1 = 0; }
-				if ((i & 4) == 0) { i2 = 0; j2 = -1; } else { i2 = 0; j2 = 1; }
+				if ((i & 2) == 0) {
+					i1 = -1;
+					j1 = 0;
 				} else {
-				if ((i & 2) != 0) { i1 = 2; j1 = 1; } else { i1 = 0; j1 = 1; }
-				if ((i & 4) != 0) { i2 = 1; j2 = 2; } else { i2 = 1; j2 = 0; }
+					i1 = 1;
+					j1 = 0;
+				}
+				if ((i & 4) == 0) {
+					i2 = 0;
+					j2 = -1;
+				} else {
+					i2 = 0;
+					j2 = 1;
+				}
+			} else {
+				if ((i & 2) != 0) {
+					i1 = 2;
+					j1 = 1;
+				} else {
+					i1 = 0;
+					j1 = 1;
+				}
+				if ((i & 4) != 0) {
+					i2 = 1;
+					j2 = 2;
+				} else {
+					i2 = 1;
+					j2 = 0;
+				}
 			}
 			LOOKUP_2D[i * 4 + 0] = new LatticePoint2D(0, 0);
 			LOOKUP_2D[i * 4 + 1] = new LatticePoint2D(1, 1);
@@ -489,10 +556,15 @@ public class OpenSimplex2S {
 
 		for (int i = 0; i < 8; i++) {
 			int i1, j1, k1, i2, j2, k2;
-			i1 = (i >> 0) & 1; j1 = (i >> 1) & 1; k1 = (i >> 2) & 1;
-			i2 = i1 ^ 1; j2 = j1 ^ 1; k2 = k1 ^ 1;
+			i1 = (i >> 0) & 1;
+			j1 = (i >> 1) & 1;
+			k1 = (i >> 2) & 1;
+			i2 = i1 ^ 1;
+			j2 = j1 ^ 1;
+			k2 = k1 ^ 1;
 
-			// The two points within this octant, one from each of the two cubic half-lattices.
+			// The two points within this octant, one from each of the two cubic
+			// half-lattices.
 			LatticePoint3D c0 = new LatticePoint3D(i1, j1, k1, 0);
 			LatticePoint3D c1 = new LatticePoint3D(i1 + i2, j1 + j2, k1 + k2, 1);
 
@@ -525,27 +597,36 @@ public class OpenSimplex2S {
 			c1.nextOnFailure = c1.nextOnSuccess = c2;
 
 			// If c2 is in range, then we know c3 and c4 are not.
-			c2.nextOnFailure = c3; c2.nextOnSuccess = c5;
-			c3.nextOnFailure = c4; c3.nextOnSuccess = c4;
+			c2.nextOnFailure = c3;
+			c2.nextOnSuccess = c5;
+			c3.nextOnFailure = c4;
+			c3.nextOnSuccess = c4;
 
 			// If c4 is in range, then we know c5 is not.
-			c4.nextOnFailure = c5; c4.nextOnSuccess = c6;
+			c4.nextOnFailure = c5;
+			c4.nextOnSuccess = c6;
 			c5.nextOnFailure = c5.nextOnSuccess = c6;
 
 			// If c6 is in range, then we know c7 and c8 are not.
-			c6.nextOnFailure = c7; c6.nextOnSuccess = c9;
-			c7.nextOnFailure = c8; c7.nextOnSuccess = c8;
+			c6.nextOnFailure = c7;
+			c6.nextOnSuccess = c9;
+			c7.nextOnFailure = c8;
+			c7.nextOnSuccess = c8;
 
 			// If c8 is in range, then we know c9 is not.
-			c8.nextOnFailure = c9; c8.nextOnSuccess = cA;
+			c8.nextOnFailure = c9;
+			c8.nextOnSuccess = cA;
 			c9.nextOnFailure = c9.nextOnSuccess = cA;
 
 			// If cA is in range, then we know cB and cC are not.
-			cA.nextOnFailure = cB; cA.nextOnSuccess = cD;
-			cB.nextOnFailure = cC; cB.nextOnSuccess = cC;
+			cA.nextOnFailure = cB;
+			cA.nextOnSuccess = cD;
+			cB.nextOnFailure = cC;
+			cB.nextOnSuccess = cC;
 
 			// If cC is in range, then we know cD is not.
-			cC.nextOnFailure = cD; cC.nextOnSuccess = null;
+			cC.nextOnFailure = cD;
+			cC.nextOnSuccess = null;
 			cD.nextOnFailure = cD.nextOnSuccess = null;
 
 			LOOKUP_3D[i] = c0;
@@ -554,28 +635,24 @@ public class OpenSimplex2S {
 	}
 
 	// Hexagon surrounding each vertex.
-	private static final int[][] NEIGHBOR_MAP_2D = {
-		{ 1, 0 }, { 1, 1 }, { 0, 1 }, { 0, -1 }, { -1, -1 }, { -1, 0 }
-	};
+	private static final int[][] NEIGHBOR_MAP_2D = { { 1, 0 }, { 1, 1 }, { 0, 1 }, { 0, -1 }, { -1, -1 }, { -1, 0 } };
 
 	// Cube surrounding each vertex.
 	// Alternates between half-lattices.
 	private static final int[][][] NEIGHBOR_MAP_3D = {
-		{
-			{ 1024, 1024, 1024 }, { 1025, 1024, 1024 }, { 1024, 1025, 1024 }, { 1025, 1025, 1024 },
-			{ 1024, 1024, 1025 }, { 1025, 1024, 1025 }, { 1024, 1025, 1025 }, { 1025, 1025, 1025 }
-		},
-		{
-			{ -1024, -1024, -1024 }, { -1025, -1024, 1024 }, { -1024, -1025, -1024 }, { -1025, -1025, -1024 },
-			{ -1024, -1024, -1025 }, { -1025, -1024, -1025 }, { -1024, -1025, -1025 }, { -1025, -1025, 1025 }
-		},
-	};
+			{ { 1024, 1024, 1024 }, { 1025, 1024, 1024 }, { 1024, 1025, 1024 }, { 1025, 1025, 1024 },
+					{ 1024, 1024, 1025 }, { 1025, 1024, 1025 }, { 1024, 1025, 1025 }, { 1025, 1025, 1025 } },
+			{ { -1024, -1024, -1024 }, { -1025, -1024, 1024 }, { -1024, -1025, -1024 }, { -1025, -1025, -1024 },
+					{ -1024, -1024, -1025 }, { -1025, -1024, -1025 }, { -1024, -1025, -1025 },
+					{ -1025, -1025, 1025 } }, };
 
 	private static class LatticePoint2D {
 		int xsv, ysv;
 		double dx, dy;
+
 		public LatticePoint2D(int xsv, int ysv) {
-			this.xsv = xsv; this.ysv = ysv;
+			this.xsv = xsv;
+			this.ysv = ysv;
 			double ssv = (xsv + ysv) * -0.211324865405187;
 			this.dx = -xsv - ssv;
 			this.dy = -ysv - ssv;
@@ -586,29 +663,42 @@ public class OpenSimplex2S {
 		public double dxr, dyr, dzr;
 		public int xrv, yrv, zrv;
 		LatticePoint3D nextOnFailure, nextOnSuccess;
+
 		public LatticePoint3D(int xrv, int yrv, int zrv, int lattice) {
-			this.dxr = -xrv + lattice * 0.5; this.dyr = -yrv + lattice * 0.5; this.dzr = -zrv + lattice * 0.5;
-			this.xrv = xrv + lattice * 1024; this.yrv = yrv + lattice * 1024; this.zrv = zrv + lattice * 1024;
+			this.dxr = -xrv + lattice * 0.5;
+			this.dyr = -yrv + lattice * 0.5;
+			this.dzr = -zrv + lattice * 0.5;
+			this.xrv = xrv + lattice * 1024;
+			this.yrv = yrv + lattice * 1024;
+			this.zrv = zrv + lattice * 1024;
 		}
 	}
 
 	private static class AreaGenLatticePoint2D {
 		int xsv, ysv;
 		int destPointX, destPointY;
-		public AreaGenLatticePoint2D(GenerateContext2D context, int xsv, int ysv) {
-			this.xsv = xsv; this.ysv = ysv;
 
-			//Matrix multiplication for inverse rotation. Simplex skew transforms have always been shorthand for matrices.
-			this.destPointX = (int)Math.ceil((context.orientation.t00 * xsv + context.orientation.t01 * ysv) * context.xFrequencyInverse);
-			this.destPointY = (int)Math.ceil((context.orientation.t10 * xsv + context.orientation.t11 * ysv) * context.yFrequencyInverse);
+		public AreaGenLatticePoint2D(GenerateContext2D context, int xsv, int ysv) {
+			this.xsv = xsv;
+			this.ysv = ysv;
+
+			// Matrix multiplication for inverse rotation. Simplex skew
+			// transforms have always been shorthand for matrices.
+			this.destPointX = (int) Math
+					.ceil((context.orientation.t00 * xsv + context.orientation.t01 * ysv) * context.xFrequencyInverse);
+			this.destPointY = (int) Math
+					.ceil((context.orientation.t10 * xsv + context.orientation.t11 * ysv) * context.yFrequencyInverse);
 		}
+
 		@Override
 		public int hashCode() {
 			return xsv * 7841 + ysv;
 		}
+
 		@Override
 		public boolean equals(Object obj) {
-			if (!(obj instanceof AreaGenLatticePoint2D)) return false;
+			if (!(obj instanceof AreaGenLatticePoint2D))
+				return false;
 			AreaGenLatticePoint2D other = (AreaGenLatticePoint2D) obj;
 			return (other.xsv == this.xsv && other.ysv == this.ysv);
 		}
@@ -617,15 +707,20 @@ public class OpenSimplex2S {
 	private static class AreaGenLatticePoint3D {
 		int xsv, ysv, zsv, lattice;
 		int destPointX, destPointY, destPointZ;
+
 		public AreaGenLatticePoint3D(GenerateContext3D context, int xsv, int ysv, int zsv, int lattice) {
-			this.xsv = xsv; this.ysv = ysv; this.zsv = zsv; this.lattice = lattice;
+			this.xsv = xsv;
+			this.ysv = ysv;
+			this.zsv = zsv;
+			this.lattice = lattice;
 			double xr = (xsv - lattice * 1024.5);
 			double yr = (ysv - lattice * 1024.5);
 			double zr = (zsv - lattice * 1024.5);
 
 			// Quaternion multiplication for inverse rotation.
 			// https://blog.molecular-matters.com/2013/05/24/a-faster-quaternion-vector-multiplication/
-			double qx = -context.orientation.qx, qy = -context.orientation.qy, qz = -context.orientation.qz, qw = context.orientation.qw;
+			double qx = -context.orientation.qx, qy = -context.orientation.qy, qz = -context.orientation.qz,
+					qw = context.orientation.qw;
 			double tx = 2 * (qy * zr - qz * yr);
 			double ty = 2 * (qz * xr - qx * zr);
 			double tz = 2 * (qx * yr - qy * xr);
@@ -633,19 +728,23 @@ public class OpenSimplex2S {
 			double yrr = yr + qw * ty + (qz * tx - qx * tz);
 			double zrr = zr + qw * tz + (qx * ty - qy * tx);
 
-			this.destPointX = (int)Math.ceil(xrr * context.xFrequencyInverse);
-			this.destPointY = (int)Math.ceil(yrr * context.yFrequencyInverse);
-			this.destPointZ = (int)Math.ceil(zrr * context.zFrequencyInverse);
+			this.destPointX = (int) Math.ceil(xrr * context.xFrequencyInverse);
+			this.destPointY = (int) Math.ceil(yrr * context.yFrequencyInverse);
+			this.destPointZ = (int) Math.ceil(zrr * context.zFrequencyInverse);
 		}
+
 		@Override
 		public int hashCode() {
 			return xsv * 2122193 + ysv * 2053 + zsv * 2 + lattice;
 		}
+
 		@Override
 		public boolean equals(Object obj) {
-			if (!(obj instanceof AreaGenLatticePoint3D)) return false;
+			if (!(obj instanceof AreaGenLatticePoint3D))
+				return false;
 			AreaGenLatticePoint3D other = (AreaGenLatticePoint3D) obj;
-			return (other.xsv == this.xsv && other.ysv == this.ysv && other.zsv == this.zsv && other.lattice == this.lattice);
+			return (other.xsv == this.xsv && other.ysv == this.ysv && other.zsv == this.zsv
+					&& other.lattice == this.lattice);
 		}
 	}
 
@@ -661,7 +760,8 @@ public class OpenSimplex2S {
 		int[] kernelBounds;
 		LatticeOrientation2D orientation;
 
-		public GenerateContext2D(LatticeOrientation2D orientation, double xFrequency, double yFrequency, double amplitude) {
+		public GenerateContext2D(LatticeOrientation2D orientation, double xFrequency, double yFrequency,
+				double amplitude) {
 
 			// These will be used by every call to generate
 			this.orientation = orientation;
@@ -674,19 +774,18 @@ public class OpenSimplex2S {
 			double preciseScaledRadiusY = Math.sqrt(2.0 / 3.0) * yFrequencyInverse;
 
 			// 0.25 because we offset center by 0.5
-			this.scaledRadiusX = (int)Math.ceil(preciseScaledRadiusX + 0.25);
-			this.scaledRadiusY = (int)Math.ceil(preciseScaledRadiusY + 0.25);
+			this.scaledRadiusX = (int) Math.ceil(preciseScaledRadiusX + 0.25);
+			this.scaledRadiusY = (int) Math.ceil(preciseScaledRadiusY + 0.25);
 
 			// So will these
-			kernel = new double[scaledRadiusY/* * 2*/][];
+			kernel = new double[scaledRadiusY/* * 2 */][];
 			kernelBounds = new int[scaledRadiusY * 2];
 			for (int yy = 0; yy < scaledRadiusY * 2; yy++) {
 
 				// Pre-generate boundary of circle
-				kernelBounds[yy] = (int)Math.ceil(
-						Math.sqrt(1.0
-							- (yy + 0.5 - scaledRadiusY) * (yy + 0.5 - scaledRadiusY) / (scaledRadiusY * scaledRadiusY)
-						) * scaledRadiusX);
+				kernelBounds[yy] = (int) Math.ceil(Math.sqrt(
+						1.0 - (yy + 0.5 - scaledRadiusY) * (yy + 0.5 - scaledRadiusY) / (scaledRadiusY * scaledRadiusY))
+						* scaledRadiusX);
 
 				if (yy < scaledRadiusY) {
 					kernel[yy] = new double[scaledRadiusX * 2];
@@ -703,7 +802,7 @@ public class OpenSimplex2S {
 							kernel[yy][xx] = 0.0;
 						}
 					}
-				} /* else kernel[yy] = kernel[2 * scaledRadiusY - yy - 1];*/
+				} /* else kernel[yy] = kernel[2 * scaledRadiusY - yy - 1]; */
 			}
 		}
 	}
@@ -724,7 +823,8 @@ public class OpenSimplex2S {
 		int[][] kernelBoundsX;
 		LatticeOrientation3D orientation;
 
-		public GenerateContext3D(LatticeOrientation3D orientation, double xFrequency, double yFrequency, double zFrequency, double amplitude) {
+		public GenerateContext3D(LatticeOrientation3D orientation, double xFrequency, double yFrequency,
+				double zFrequency, double amplitude) {
 
 			// These will be used by every call to generate
 			this.orientation = orientation;
@@ -740,9 +840,9 @@ public class OpenSimplex2S {
 			double preciseScaledRadiusZ = Math.sqrt(0.75) * zFrequencyInverse;
 
 			// 0.25 because we offset center by 0.5
-			this.scaledRadiusX = (int)Math.ceil(preciseScaledRadiusX + 0.25);
-			this.scaledRadiusY = (int)Math.ceil(preciseScaledRadiusY + 0.25);
-			this.scaledRadiusZ = (int)Math.ceil(preciseScaledRadiusZ + 0.25);
+			this.scaledRadiusX = (int) Math.ceil(preciseScaledRadiusX + 0.25);
+			this.scaledRadiusY = (int) Math.ceil(preciseScaledRadiusY + 0.25);
+			this.scaledRadiusZ = (int) Math.ceil(preciseScaledRadiusZ + 0.25);
 
 			// So will these
 			kernel = new double[scaledRadiusZ * 2][][];
@@ -751,9 +851,9 @@ public class OpenSimplex2S {
 			for (int zz = 0; zz < scaledRadiusZ * 2; zz++) {
 
 				// Pre-generate boundary of sphere
-				kernelBoundsY[zz] = (int)Math.ceil(
-						Math.sqrt(1.0 - (zz + 0.5 - scaledRadiusZ) * (zz + 0.5 - scaledRadiusZ)
-						/ (scaledRadiusZ * scaledRadiusZ)) * scaledRadiusY);
+				kernelBoundsY[zz] = (int) Math.ceil(Math.sqrt(
+						1.0 - (zz + 0.5 - scaledRadiusZ) * (zz + 0.5 - scaledRadiusZ) / (scaledRadiusZ * scaledRadiusZ))
+						* scaledRadiusY);
 
 				if (zz < scaledRadiusZ) {
 					kernel[zz] = new double[scaledRadiusY * 2][];
@@ -767,11 +867,12 @@ public class OpenSimplex2S {
 					for (int yy = 0; yy < scaledRadiusY * 2; yy++) {
 
 						// Pre-generate boundary of sphere
-						kernelBoundsX[zz][yy] = (int)Math.ceil(
-								Math.sqrt(1.0
-									- (yy + 0.5 - scaledRadiusY) * (yy + 0.5 - scaledRadiusY) / (scaledRadiusY * scaledRadiusY)
-									- (zz + 0.5 - scaledRadiusZ) * (zz + 0.5 - scaledRadiusZ) / (scaledRadiusZ * scaledRadiusZ)
-								) * scaledRadiusX);
+						kernelBoundsX[zz][yy] = (int) Math.ceil(Math.sqrt(1.0
+								- (yy + 0.5 - scaledRadiusY) * (yy + 0.5 - scaledRadiusY)
+										/ (scaledRadiusY * scaledRadiusY)
+								- (zz + 0.5 - scaledRadiusZ) * (zz + 0.5 - scaledRadiusZ)
+										/ (scaledRadiusZ * scaledRadiusZ))
+								* scaledRadiusX);
 
 						if (yy < scaledRadiusY) {
 							kernel[zz][yy] = new double[scaledRadiusX * 2];
@@ -790,7 +891,8 @@ public class OpenSimplex2S {
 								}
 							}
 
-						} else kernel[zz][yy] = kernel[zz][2 * scaledRadiusY - yy - 1];
+						} else
+							kernel[zz][yy] = kernel[zz][2 * scaledRadiusY - yy - 1];
 					}
 				}
 			}
@@ -798,40 +900,50 @@ public class OpenSimplex2S {
 	}
 
 	public enum LatticeOrientation2D {
-		// Simplex skew transforms have always been shorthand for the matrices they represent.
-		// But when we bake the rotation into the skew transform, we need to use the general form.
-		Standard(GRADIENTS_2D,
-				1.366025403784439, 0.366025403784439, 0.366025403784439, 1.366025403784439,
-				0.788675134594813, -0.211324865405187, -0.211324865405187, 0.788675134594813),
-		XBeforeY(GRADIENTS_2D_X_BEFORE_Y,
-				 0.7071067811865476, 1.224744871380249, -0.7071067811865476, 1.224744871380249,
-				 0.7071067811865476, -0.7071067811865476, 0.40824829046764305, 0.40824829046764305);
+		// Simplex skew transforms have always been shorthand for the matrices
+		// they represent.
+		// But when we bake the rotation into the skew transform, we need to use
+		// the general form.
+		Standard(GRADIENTS_2D, 1.366025403784439, 0.366025403784439, 0.366025403784439, 1.366025403784439,
+				0.788675134594813, -0.211324865405187, -0.211324865405187,
+				0.788675134594813), XBeforeY(GRADIENTS_2D_X_BEFORE_Y, 0.7071067811865476, 1.224744871380249,
+						-0.7071067811865476, 1.224744871380249, 0.7071067811865476, -0.7071067811865476,
+						0.40824829046764305, 0.40824829046764305);
 
 		Grad2[] gradients;
 		double s00, s01, s10, s11;
 		double t00, t01, t10, t11;
 
-		private LatticeOrientation2D(Grad2[] gradients,
-									double s00, double s01, double s10, double s11,
-									double t00, double t01, double t10, double t11) {
+		private LatticeOrientation2D(Grad2[] gradients, double s00, double s01, double s10, double s11, double t00,
+				double t01, double t10, double t11) {
 			this.gradients = gradients;
-			this.s00 = s00; this.s01 = s01; this.s10 = s10; this.s11 = s11;
-			this.t00 = t00; this.t01 = t01; this.t10 = t10; this.t11 = t11;
+			this.s00 = s00;
+			this.s01 = s01;
+			this.s10 = s10;
+			this.s11 = s11;
+			this.t00 = t00;
+			this.t01 = t01;
+			this.t10 = t10;
+			this.t11 = t11;
 		}
 	}
 
 	public enum LatticeOrientation3D {
-		// Quaternions for 3D. Could use matrices, but I already wrote this code before I moved them into here.
-		Classic(GRADIENTS_3D_CLASSIC, 0.577350269189626, 0.577350269189626, 0.577350269189626, 0),
-		XYBeforeZ(GRADIENTS_3D_XY_BEFORE_Z, 0.3250575836718682, -0.3250575836718682, 0, 0.8880738339771154),
-		XZBeforeY(GRADIENTS_3D_XZ_BEFORE_Y, -0.3250575836718682, 0, 0.3250575836718682, 0.8880738339771154);
+		// Quaternions for 3D. Could use matrices, but I already wrote this code
+		// before I moved them into here.
+		Classic(GRADIENTS_3D_CLASSIC, 0.577350269189626, 0.577350269189626, 0.577350269189626, 0), XYBeforeZ(
+				GRADIENTS_3D_XY_BEFORE_Z, 0.3250575836718682, -0.3250575836718682, 0, 0.8880738339771154), XZBeforeY(
+						GRADIENTS_3D_XZ_BEFORE_Y, -0.3250575836718682, 0, 0.3250575836718682, 0.8880738339771154);
 
 		Grad3[] gradients;
 		double qx, qy, qz, qw;
 
 		private LatticeOrientation3D(Grad3[] gradients, double qx, double qy, double qz, double qw) {
 			this.gradients = gradients;
-			this.qx = qx; this.qy = qy; this.qz = qz; this.qw = qw;
+			this.qx = qx;
+			this.qy = qy;
+			this.qz = qz;
+			this.qw = qw;
 		}
 	}
 
@@ -841,15 +953,20 @@ public class OpenSimplex2S {
 
 	public static class Grad2 {
 		double dx, dy;
+
 		public Grad2(double dx, double dy) {
-			this.dx = dx; this.dy = dy;
+			this.dx = dx;
+			this.dy = dy;
 		}
 	}
 
 	public static class Grad3 {
 		double dx, dy, dz;
+
 		public Grad3(double dx, double dy, double dz) {
-			this.dx = dx; this.dy = dy; this.dz = dz;
+			this.dx = dx;
+			this.dy = dy;
+			this.dz = dz;
 		}
 	}
 
@@ -861,35 +978,23 @@ public class OpenSimplex2S {
 
 		GRADIENTS_2D = new Grad2[PSIZE];
 		GRADIENTS_2D_X_BEFORE_Y = new Grad2[PSIZE];
-		Grad2[] grad2 = {
-			new Grad2( 0.130526192220052,  0.99144486137381),
-			new Grad2( 0.38268343236509,   0.923879532511287),
-			new Grad2( 0.608761429008721,  0.793353340291235),
-			new Grad2( 0.793353340291235,  0.608761429008721),
-			new Grad2( 0.923879532511287,  0.38268343236509),
-			new Grad2( 0.99144486137381,   0.130526192220051),
-			new Grad2( 0.99144486137381,  -0.130526192220051),
-			new Grad2( 0.923879532511287, -0.38268343236509),
-			new Grad2( 0.793353340291235, -0.60876142900872),
-			new Grad2( 0.608761429008721, -0.793353340291235),
-			new Grad2( 0.38268343236509,  -0.923879532511287),
-			new Grad2( 0.130526192220052, -0.99144486137381),
-			new Grad2(-0.130526192220052, -0.99144486137381),
-			new Grad2(-0.38268343236509,  -0.923879532511287),
-			new Grad2(-0.608761429008721, -0.793353340291235),
-			new Grad2(-0.793353340291235, -0.608761429008721),
-			new Grad2(-0.923879532511287, -0.38268343236509),
-			new Grad2(-0.99144486137381,  -0.130526192220052),
-			new Grad2(-0.99144486137381,   0.130526192220051),
-			new Grad2(-0.923879532511287,  0.38268343236509),
-			new Grad2(-0.793353340291235,  0.608761429008721),
-			new Grad2(-0.608761429008721,  0.793353340291235),
-			new Grad2(-0.38268343236509,   0.923879532511287),
-			new Grad2(-0.130526192220052,  0.99144486137381)
-		};
+		Grad2[] grad2 = { new Grad2(0.130526192220052, 0.99144486137381),
+				new Grad2(0.38268343236509, 0.923879532511287), new Grad2(0.608761429008721, 0.793353340291235),
+				new Grad2(0.793353340291235, 0.608761429008721), new Grad2(0.923879532511287, 0.38268343236509),
+				new Grad2(0.99144486137381, 0.130526192220051), new Grad2(0.99144486137381, -0.130526192220051),
+				new Grad2(0.923879532511287, -0.38268343236509), new Grad2(0.793353340291235, -0.60876142900872),
+				new Grad2(0.608761429008721, -0.793353340291235), new Grad2(0.38268343236509, -0.923879532511287),
+				new Grad2(0.130526192220052, -0.99144486137381), new Grad2(-0.130526192220052, -0.99144486137381),
+				new Grad2(-0.38268343236509, -0.923879532511287), new Grad2(-0.608761429008721, -0.793353340291235),
+				new Grad2(-0.793353340291235, -0.608761429008721), new Grad2(-0.923879532511287, -0.38268343236509),
+				new Grad2(-0.99144486137381, -0.130526192220052), new Grad2(-0.99144486137381, 0.130526192220051),
+				new Grad2(-0.923879532511287, 0.38268343236509), new Grad2(-0.793353340291235, 0.608761429008721),
+				new Grad2(-0.608761429008721, 0.793353340291235), new Grad2(-0.38268343236509, 0.923879532511287),
+				new Grad2(-0.130526192220052, 0.99144486137381) };
 		Grad2[] grad2XBeforeY = new Grad2[grad2.length];
 		for (int i = 0; i < grad2.length; i++) {
-			grad2[i].dx /= N2; grad2[i].dy /= N2;
+			grad2[i].dx /= N2;
+			grad2[i].dy /= N2;
 
 			// Unrotated gradients for XBeforeY 2D
 			double xx = grad2[i].dx * 0.7071067811865476;
@@ -905,77 +1010,59 @@ public class OpenSimplex2S {
 		GRADIENTS_3D_CLASSIC = new Grad3[PSIZE];
 		GRADIENTS_3D_XY_BEFORE_Z = new Grad3[PSIZE];
 		GRADIENTS_3D_XZ_BEFORE_Y = new Grad3[PSIZE];
-		Grad3[] grad3 = {
-			new Grad3(-2.22474487139,      -2.22474487139,      -1.0),
+		Grad3[] grad3 = { new Grad3(-2.22474487139, -2.22474487139, -1.0),
 				new Grad3(-2.22474487139, -2.22474487139, 1.0),
 				new Grad3(-3.0862664687972017, -1.1721513422464978, 0.0),
 				new Grad3(-1.1721513422464978, -3.0862664687972017, 0.0),
-			new Grad3(-2.22474487139,      -1.0,                -2.22474487139),
-			new Grad3(-2.22474487139,       1.0,                -2.22474487139),
+				new Grad3(-2.22474487139, -1.0, -2.22474487139), new Grad3(-2.22474487139, 1.0, -2.22474487139),
 				new Grad3(-1.1721513422464978, 0.0, -3.0862664687972017),
 				new Grad3(-3.0862664687972017, 0.0, -1.1721513422464978),
-			new Grad3(-2.22474487139,      -1.0,                 2.22474487139),
-			new Grad3(-2.22474487139,       1.0,                 2.22474487139),
+				new Grad3(-2.22474487139, -1.0, 2.22474487139), new Grad3(-2.22474487139, 1.0, 2.22474487139),
 				new Grad3(-3.0862664687972017, 0.0, 1.1721513422464978),
-			new Grad3(-1.1721513422464978,  0.0,                 3.0862664687972017),
-			new Grad3(-2.22474487139,       2.22474487139,      -1.0),
-			new Grad3(-2.22474487139,       2.22474487139,       1.0),
-			new Grad3(-1.1721513422464978,  3.0862664687972017,  0.0),
+				new Grad3(-1.1721513422464978, 0.0, 3.0862664687972017), new Grad3(-2.22474487139, 2.22474487139, -1.0),
+				new Grad3(-2.22474487139, 2.22474487139, 1.0), new Grad3(-1.1721513422464978, 3.0862664687972017, 0.0),
 				new Grad3(-3.0862664687972017, 1.1721513422464978, 0.0),
-			new Grad3(-1.0,                -2.22474487139,      -2.22474487139),
-			new Grad3( 1.0,                -2.22474487139,      -2.22474487139),
-			new Grad3( 0.0,                -3.0862664687972017, -1.1721513422464978),
-			new Grad3( 0.0,                -1.1721513422464978, -3.0862664687972017),
-			new Grad3(-1.0,                -2.22474487139,       2.22474487139),
-			new Grad3( 1.0,                -2.22474487139,       2.22474487139),
-			new Grad3( 0.0,                -1.1721513422464978,  3.0862664687972017),
-			new Grad3( 0.0,                -3.0862664687972017,  1.1721513422464978),
-			new Grad3(-1.0,                 2.22474487139,      -2.22474487139),
-			new Grad3( 1.0,                 2.22474487139,      -2.22474487139),
-			new Grad3( 0.0,                 1.1721513422464978, -3.0862664687972017),
-			new Grad3( 0.0,                 3.0862664687972017, -1.1721513422464978),
-			new Grad3(-1.0,                 2.22474487139,       2.22474487139),
-			new Grad3( 1.0,                 2.22474487139,       2.22474487139),
-			new Grad3( 0.0,                 3.0862664687972017,  1.1721513422464978),
-			new Grad3( 0.0,                 1.1721513422464978,  3.0862664687972017),
-			new Grad3( 2.22474487139,      -2.22474487139,      -1.0),
-			new Grad3( 2.22474487139,      -2.22474487139,       1.0),
-			new Grad3( 1.1721513422464978, -3.0862664687972017,  0.0),
-			new Grad3( 3.0862664687972017, -1.1721513422464978,  0.0),
-			new Grad3( 2.22474487139,      -1.0,                -2.22474487139),
-			new Grad3( 2.22474487139,       1.0,                -2.22474487139),
-			new Grad3( 3.0862664687972017,  0.0,                -1.1721513422464978),
-			new Grad3( 1.1721513422464978,  0.0,                -3.0862664687972017),
-			new Grad3( 2.22474487139,      -1.0,                 2.22474487139),
-			new Grad3( 2.22474487139,       1.0,                 2.22474487139),
-			new Grad3( 1.1721513422464978,  0.0,                 3.0862664687972017),
-			new Grad3( 3.0862664687972017,  0.0,                 1.1721513422464978),
-			new Grad3( 2.22474487139,       2.22474487139,      -1.0),
-			new Grad3( 2.22474487139,       2.22474487139,       1.0),
-			new Grad3( 3.0862664687972017,  1.1721513422464978,  0.0),
-			new Grad3( 1.1721513422464978,  3.0862664687972017,  0.0)
-		};
+				new Grad3(-1.0, -2.22474487139, -2.22474487139), new Grad3(1.0, -2.22474487139, -2.22474487139),
+				new Grad3(0.0, -3.0862664687972017, -1.1721513422464978),
+				new Grad3(0.0, -1.1721513422464978, -3.0862664687972017),
+				new Grad3(-1.0, -2.22474487139, 2.22474487139), new Grad3(1.0, -2.22474487139, 2.22474487139),
+				new Grad3(0.0, -1.1721513422464978, 3.0862664687972017),
+				new Grad3(0.0, -3.0862664687972017, 1.1721513422464978), new Grad3(-1.0, 2.22474487139, -2.22474487139),
+				new Grad3(1.0, 2.22474487139, -2.22474487139), new Grad3(0.0, 1.1721513422464978, -3.0862664687972017),
+				new Grad3(0.0, 3.0862664687972017, -1.1721513422464978), new Grad3(-1.0, 2.22474487139, 2.22474487139),
+				new Grad3(1.0, 2.22474487139, 2.22474487139), new Grad3(0.0, 3.0862664687972017, 1.1721513422464978),
+				new Grad3(0.0, 1.1721513422464978, 3.0862664687972017), new Grad3(2.22474487139, -2.22474487139, -1.0),
+				new Grad3(2.22474487139, -2.22474487139, 1.0), new Grad3(1.1721513422464978, -3.0862664687972017, 0.0),
+				new Grad3(3.0862664687972017, -1.1721513422464978, 0.0), new Grad3(2.22474487139, -1.0, -2.22474487139),
+				new Grad3(2.22474487139, 1.0, -2.22474487139), new Grad3(3.0862664687972017, 0.0, -1.1721513422464978),
+				new Grad3(1.1721513422464978, 0.0, -3.0862664687972017), new Grad3(2.22474487139, -1.0, 2.22474487139),
+				new Grad3(2.22474487139, 1.0, 2.22474487139), new Grad3(1.1721513422464978, 0.0, 3.0862664687972017),
+				new Grad3(3.0862664687972017, 0.0, 1.1721513422464978), new Grad3(2.22474487139, 2.22474487139, -1.0),
+				new Grad3(2.22474487139, 2.22474487139, 1.0), new Grad3(3.0862664687972017, 1.1721513422464978, 0.0),
+				new Grad3(1.1721513422464978, 3.0862664687972017, 0.0) };
 		Grad3[] grad3Classic = new Grad3[grad3.length];
 		Grad3[] grad3XYBeforeZ = new Grad3[grad3.length];
 		Grad3[] grad3XZBeforeY = new Grad3[grad3.length];
 		for (int i = 0; i < grad3.length; i++) {
-			grad3[i].dx /= N3; grad3[i].dy /= N3; grad3[i].dz /= N3;
+			grad3[i].dx /= N3;
+			grad3[i].dy /= N3;
+			grad3[i].dz /= N3;
 			double gxr = grad3[i].dx, gyr = grad3[i].dy, gzr = grad3[i].dz;
 
 			// Unrotated gradients for classic 3D
 			double grr = (2.0 / 3.0) * (gxr + gyr + gzr);
-//			double dx = grr - gxr, dy = grr - gyr, dz = grr - gzr;
-			grad3Classic[i] = new Grad3( grr - gxr, grr - gyr, grr - gzr );
+			// double dx = grr - gxr, dy = grr - gyr, dz = grr - gzr;
+			grad3Classic[i] = new Grad3(grr - gxr, grr - gyr, grr - gzr);
 
 			// Unrotated gradients for XYBeforeZ 3D
 			double s2 = (gxr + gyr) * -0.211324865405187;
 			double zz = gzr * 0.577350269189626;
-			grad3XYBeforeZ[i] = new Grad3( gxr + s2 + zz, gyr + s2 + zz, (gzr - gxr - gyr) * 0.577350269189626 );
+			grad3XYBeforeZ[i] = new Grad3(gxr + s2 + zz, gyr + s2 + zz, (gzr - gxr - gyr) * 0.577350269189626);
 
 			// Unrotated gradients for plane-first 3D
 			s2 = (gxr + gzr) * -0.211324865405187;
 			double yy = gyr * 0.577350269189626;
-			grad3XZBeforeY[i] = new Grad3( gxr + s2 + yy, (gyr - gxr - gzr) * 0.577350269189626, gzr + s2 + yy );
+			grad3XZBeforeY[i] = new Grad3(gxr + s2 + yy, (gyr - gxr - gzr) * 0.577350269189626, gzr + s2 + yy);
 		}
 		for (int i = 0; i < PSIZE; i++) {
 			GRADIENTS_3D[i] = grad3[i % grad3.length];

src/main/java/ru/windcorp/jputil/ArrayUtil.java

@@ -611,8 +611,7 @@ public class ArrayUtil {
 		int end = offset + length;
 		if (end > arrayLength || offset < 0)
 			throw new IllegalArgumentException(
-				"Array contains [0; " + arrayLength + "), requested [" + offset + "; " + end + ")"
-			);
+					"Array contains [0; " + arrayLength + "), requested [" + offset + "; " + end + ")");
 
 		return length;
 	}
@@ -628,8 +627,7 @@ public class ArrayUtil {
 
 		if (end > arrayLength || start < 0)
 			throw new IllegalArgumentException(
-				"Array contains [0; " + arrayLength + "), requested [" + start + "; " + end + ")"
-			);
+					"Array contains [0; " + arrayLength + "), requested [" + start + "; " + end + ")");
 
 		return end;
 	}

src/main/java/ru/windcorp/jputil/PrimitiveUtil.java

@@ -30,18 +30,8 @@ public class PrimitiveUtil {
 	private static final Map<Class<?>, Object> PRIMITIVE_TO_NULL = new HashMap<>();
 
 	static {
-		for (
-			Class<?> boxed : new Class<?>[] {
-				Boolean.class,
-				Byte.class,
-				Short.class,
-				Character.class,
-				Integer.class,
-				Long.class,
-				Float.class,
-				Double.class
-			}
-		) {
+		for (Class<?> boxed : new Class<?>[] { Boolean.class, Byte.class, Short.class, Character.class, Integer.class,
+				Long.class, Float.class, Double.class }) {
 			try {
 				PRIMITIVE_TO_BOXED.put((Class<?>) boxed.getField("TYPE").get(null), boxed);
 			} catch (Exception e) {

src/main/java/ru/windcorp/jputil/SyncStreams.java

@@ -40,8 +40,7 @@ import java.util.stream.Stream;
 
 /**
  * Contains static methods to create {@link Stream Streams} that synchronize
- * their
- * <a href=
+ * their <a href=
  * "https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html#StreamOps">
  * terminal operations</a> on a given monitor.
  * 
@@ -1070,21 +1069,18 @@ public class SyncStreams {
 	}
 
 	/**
-	 * Wraps the given {@link Stream} to make all
-	 * <a href=
+	 * Wraps the given {@link Stream} to make all <a href=
 	 * "https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html#StreamOps">
 	 * terminal operations</a> acquire the provided monitor's lock before
-	 * execution. Intermediate operations
-	 * return streams that are also synchronized on the same object. The created
-	 * stream will behave identically
-	 * to the provided stream in all other aspects. Use this to synchronize
-	 * access to stream's source.
+	 * execution. Intermediate operations return streams that are also
+	 * synchronized on the same object. The created stream will behave
+	 * identically to the provided stream in all other aspects. Use this to
+	 * synchronize access to stream's source.
 	 * <p>
 	 * <i>The returned {@code Stream}'s {@link Stream#iterator() iterator()} and
-	 * {@link Stream#spliterator()
-	 * spliterator()} methods return regular non-synchronized iterators and
-	 * spliterators respectively</i>. It
-	 * is the user's responsibility to avoid concurrency issues:
+	 * {@link Stream#spliterator() spliterator()} methods return regular
+	 * non-synchronized iterators and spliterators respectively</i>. It is the
+	 * user's responsibility to avoid concurrency issues:
 	 * 
 	 * <pre>
 	 * synchronized (stream.getMonitor()) {
@@ -1103,14 +1099,17 @@ public class SyncStreams {
 	 * stream.forEach(System.out::println); // Should never throw a ConcurrentModificationException
 	 * </pre>
 	 * 
-	 * @param <T>     the class of objects in the Stream
-	 * @param stream  the stream to wrap.
-	 * @param monitor the object that the stream will use for synchronization.
-	 *                When {@code null}, the stream
-	 *                will synchronize on itself.
+	 * @param <T>
+	 *            the class of objects in the Stream
+	 * @param stream
+	 *            the stream to wrap.
+	 * @param monitor
+	 *            the object that the stream will use for synchronization. When
+	 *            {@code null}, the stream will synchronize on itself.
 	 * @return a {@link SyncStream SyncStream&lt;T&gt;} synchronized on
 	 *         {@code monitor} and backed by {@code stream}.
-	 * @throws NullPointerException if {@code stream == null}.
+	 * @throws NullPointerException
+	 *             if {@code stream == null}.
 	 */
 	public static <T> SyncStream<T> synchronizedStream(Stream<T> stream, Object monitor) {
 		Objects.requireNonNull(stream, "stream cannot be null");
@@ -1118,22 +1117,19 @@ public class SyncStreams {
 	}
 
 	/**
-	 * Wraps the given {@link IntStream} to make all
-	 * <a href=
+	 * Wraps the given {@link IntStream} to make all <a href=
 	 * "https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html#StreamOps">
 	 * terminal operations</a> acquire the provided monitor's lock before
-	 * execution. Intermediate operations
-	 * return streams that are also synchronized on the same object. The created
-	 * stream will behave identically
-	 * to the provided stream in all other aspects. Use this to synchronize
-	 * access to stream's source.
+	 * execution. Intermediate operations return streams that are also
+	 * synchronized on the same object. The created stream will behave
+	 * identically to the provided stream in all other aspects. Use this to
+	 * synchronize access to stream's source.
 	 * <p>
 	 * <i>The returned {@code IntStream}'s {@link IntStream#iterator()
-	 * iterator()} and
-	 * {@link IntStream#spliterator() spliterator()} methods return regular
-	 * non-synchronized iterators and
-	 * spliterators respectively</i>. It is the user's responsibility to avoid
-	 * concurrency issues:
+	 * iterator()} and {@link IntStream#spliterator() spliterator()} methods
+	 * return regular non-synchronized iterators and spliterators
+	 * respectively</i>. It is the user's responsibility to avoid concurrency
+	 * issues:
 	 * 
 	 * <pre>
 	 * synchronized (stream.getMonitor()) {
@@ -1152,13 +1148,15 @@ public class SyncStreams {
 	 * stream.forEach(System.out::println); // Should never throw a ConcurrentModificationException
 	 * </pre>
 	 * 
-	 * @param stream  the stream to wrap.
-	 * @param monitor the object that the stream will use for synchronization.
-	 *                When {@code null}, the stream
-	 *                will synchronize on itself.
+	 * @param stream
+	 *            the stream to wrap.
+	 * @param monitor
+	 *            the object that the stream will use for synchronization. When
+	 *            {@code null}, the stream will synchronize on itself.
 	 * @return a {@link SyncIntStream} synchronized on {@code monitor} and
 	 *         backed by {@code stream}.
-	 * @throws NullPointerException if {@code stream == null}.
+	 * @throws NullPointerException
+	 *             if {@code stream == null}.
 	 */
 	public static SyncIntStream synchronizedStream(IntStream stream, Object monitor) {
 		Objects.requireNonNull(stream, "stream cannot be null");
@@ -1166,22 +1164,19 @@ public class SyncStreams {
 	}
 
 	/**
-	 * Wraps the given {@link LongStream} to make all
-	 * <a href=
+	 * Wraps the given {@link LongStream} to make all <a href=
 	 * "https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html#StreamOps">
 	 * terminal operations</a> acquire the provided monitor's lock before
-	 * execution. Intermediate operations
-	 * return streams that are also synchronized on the same object. The created
-	 * stream will behave identically
-	 * to the provided stream in all other aspects. Use this to synchronize
-	 * access to stream's source.
+	 * execution. Intermediate operations return streams that are also
+	 * synchronized on the same object. The created stream will behave
+	 * identically to the provided stream in all other aspects. Use this to
+	 * synchronize access to stream's source.
 	 * <p>
 	 * <i>The returned {@code LongStream}'s {@link LongStream#iterator()
-	 * iterator()} and
-	 * {@link LongStream#spliterator() spliterator()} methods return regular
-	 * non-synchronized iterators and
-	 * spliterators respectively</i>. It is the user's responsibility to avoid
-	 * concurrency issues:
+	 * iterator()} and {@link LongStream#spliterator() spliterator()} methods
+	 * return regular non-synchronized iterators and spliterators
+	 * respectively</i>. It is the user's responsibility to avoid concurrency
+	 * issues:
 	 * 
 	 * <pre>
 	 * synchronized (stream.getMonitor()) {
@@ -1200,13 +1195,15 @@ public class SyncStreams {
 	 * stream.forEach(System.out::println); // Should never throw a ConcurrentModificationException
 	 * </pre>
 	 * 
-	 * @param stream  the stream to wrap.
-	 * @param monitor the object that the stream will use for synchronization.
-	 *                When {@code null}, the stream
-	 *                will synchronize on itself.
+	 * @param stream
+	 *            the stream to wrap.
+	 * @param monitor
+	 *            the object that the stream will use for synchronization. When
+	 *            {@code null}, the stream will synchronize on itself.
 	 * @return a {@link SyncLongStream} synchronized on {@code monitor} and
 	 *         backed by {@code stream}.
-	 * @throws NullPointerException if {@code stream == null}.
+	 * @throws NullPointerException
+	 *             if {@code stream == null}.
 	 */
 	public static SyncLongStream synchronizedStream(LongStream stream, Object monitor) {
 		Objects.requireNonNull(stream, "stream cannot be null");
@@ -1214,22 +1211,19 @@ public class SyncStreams {
 	}
 
 	/**
-	 * Wraps the given {@link DoubleStream} to make all
-	 * <a href=
+	 * Wraps the given {@link DoubleStream} to make all <a href=
 	 * "https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html#StreamOps">
 	 * terminal operations</a> acquire the provided monitor's lock before
-	 * execution. Intermediate operations
-	 * return streams that are also synchronized on the same object. The created
-	 * stream will behave identically
-	 * to the provided stream in all other aspects. Use this to synchronize
-	 * access to stream's source.
+	 * execution. Intermediate operations return streams that are also
+	 * synchronized on the same object. The created stream will behave
+	 * identically to the provided stream in all other aspects. Use this to
+	 * synchronize access to stream's source.
 	 * <p>
 	 * <i>The returned {@code DoubleStream}'s {@link DoubleStream#iterator()
-	 * iterator()} and
-	 * {@link DoubleStream#spliterator() spliterator()} methods return regular
-	 * non-synchronized iterators and
-	 * spliterators respectively</i>. It is the user's responsibility to avoid
-	 * concurrency issues:
+	 * iterator()} and {@link DoubleStream#spliterator() spliterator()} methods
+	 * return regular non-synchronized iterators and spliterators
+	 * respectively</i>. It is the user's responsibility to avoid concurrency
+	 * issues:
 	 * 
 	 * <pre>
 	 * synchronized (stream.getMonitor()) {
@@ -1248,13 +1242,15 @@ public class SyncStreams {
 	 * stream.forEach(System.out::println); // Should never throw a ConcurrentModificationException
 	 * </pre>
 	 * 
-	 * @param stream  the stream to wrap.
-	 * @param monitor the object that the stream will use for synchronization.
-	 *                When {@code null}, the stream
-	 *                will synchronize on itself.
+	 * @param stream
+	 *            the stream to wrap.
+	 * @param monitor
+	 *            the object that the stream will use for synchronization. When
+	 *            {@code null}, the stream will synchronize on itself.
 	 * @return a {@link SyncDoubleStream} synchronized on {@code monitor} and
 	 *         backed by {@code stream}.
-	 * @throws NullPointerException if {@code stream == null}.
+	 * @throws NullPointerException
+	 *             if {@code stream == null}.
 	 */
 	public static SyncDoubleStream synchronizedStream(DoubleStream stream, Object monitor) {
 		Objects.requireNonNull(stream, "stream cannot be null");

src/main/java/ru/windcorp/jputil/chars/CharArrayIterator.java

@@ -108,7 +108,7 @@ public class CharArrayIterator implements CharacterIterator {
 		return pos;
 	}
 
-//	@SuppressWarnings("all") Just STFU, this _is_ terrific
+	// @SuppressWarnings("all") Just STFU, this _is_ terrific
 
 	// SonarLint: "clone" should not be overridden (java:S2975)
 	// And I wouldn't have done that if only CharacterIterator had not required

src/main/java/ru/windcorp/jputil/chars/Escaper.java

@@ -103,14 +103,8 @@ public class Escaper {
 
 	}
 
-	public static final Escaper JAVA = new Escaper(
-		'\\',
-		'u',
-		"tbnrf'\"".toCharArray(),
-		"\t\b\n\r\f\'\"".toCharArray(),
-		true,
-		true
-	);
+	public static final Escaper JAVA = new Escaper('\\', 'u', "tbnrf'\"".toCharArray(), "\t\b\n\r\f\'\"".toCharArray(),
+			true, true);
 
 	private final char escapeChar;
 	private final char unicodeEscapeChar;
@@ -120,14 +114,8 @@ public class Escaper {
 	private final boolean preferUnicode;
 	private final boolean strict;
 
-	protected Escaper(
-		char escapeChar,
-		char unicodeEscapeChar,
-		char[] safes,
-		char[] unsafes,
-		boolean preferUnicode,
-		boolean strict
-	) {
+	protected Escaper(char escapeChar, char unicodeEscapeChar, char[] safes, char[] unsafes, boolean preferUnicode,
+			boolean strict) {
 		this.escapeChar = escapeChar;
 		this.unicodeEscapeChar = unicodeEscapeChar;
 		this.safes = safes;
@@ -152,8 +140,7 @@ public class Escaper {
 		for (char c : unsafes) {
 			if (c == escapeChar)
 				throw new IllegalArgumentException(
-					"Unsafe characters contain escape chatacter (escape character is escaped automatically)"
-				);
+						"Unsafe characters contain escape chatacter (escape character is escaped automatically)");
 			if (c == unicodeEscapeChar)
 				throw new IllegalArgumentException("Unsafe characters contain Unicode escape chatacter");
 		}
@@ -173,11 +160,7 @@ public class Escaper {
 			end = Integer.MAX_VALUE;
 		else
 			end = src.getPosition() + length;
-		while (
-			src.has() &&
-				src.getPosition() < end &&
-				(until == null || !until.test(src.current()))
-		)
+		while (src.has() && src.getPosition() < end && (until == null || !until.test(src.current())))
 			escape(src.consume(), output);
 	}
 
@@ -225,11 +208,7 @@ public class Escaper {
 
 		int result = 0;
 
-		while (
-			src.has() &&
-				src.getPosition() < end &&
-				(until == null || !until.test(src.current()))
-		) {
+		while (src.has() && src.getPosition() < end && (until == null || !until.test(src.current()))) {
 			result += getEscapedLength(src.consume());
 		}
 
@@ -257,11 +236,7 @@ public class Escaper {
 			end = Integer.MAX_VALUE;
 		else
 			end = src.getPosition() + length;
-		while (
-			src.has() &&
-				src.getPosition() < end &&
-				(until == null || !until.test(src.current()))
-		) {
+		while (src.has() && src.getPosition() < end && (until == null || !until.test(src.current()))) {
 			output.accept(unescapeOneSequence(src));
 		}
 	}
@@ -282,10 +257,8 @@ public class Escaper {
 
 				if (src.current() == unicodeEscapeChar) {
 					src.next();
-					return (char) (hexValue(src.consume()) << (4 * 3) |
-						hexValue(src.consume()) << (4 * 2) |
-						hexValue(src.consume()) << (4 * 1) |
-						hexValue(src.consume()) << (4 * 0));
+					return (char) (hexValue(src.consume()) << (4 * 3) | hexValue(src.consume()) << (4 * 2)
+							| hexValue(src.consume()) << (4 * 1) | hexValue(src.consume()) << (4 * 0));
 				}
 
 				int index = ArrayUtil.firstIndexOf(safes, src.current());
@@ -315,11 +288,7 @@ public class Escaper {
 
 		int result = 0;
 
-		while (
-			src.has() &&
-				src.getPosition() < end &&
-				(until == null || !until.test(src.current()))
-		) {
+		while (src.has() && src.getPosition() < end && (until == null || !until.test(src.current()))) {
 			skipOneSequence(src);
 			result++;
 		}
@@ -328,11 +297,7 @@ public class Escaper {
 	}
 
 	public void skipOneSequence(CharReader src) {
-		if (
-			src.current() == escapeChar
-				&&
-				src.next() == unicodeEscapeChar
-		) {
+		if (src.current() == escapeChar && src.next() == unicodeEscapeChar) {
 			src.advance(4);
 		}
 		src.next();

src/main/java/ru/windcorp/jputil/chars/FancyCharacterIterator.java

@@ -86,7 +86,7 @@ public class FancyCharacterIterator implements CharacterIterator {
 		return sb.toString();
 	}
 
-//	@SuppressWarnings("all") Just STFU, this _is_ terrific
+	// @SuppressWarnings("all") Just STFU, this _is_ terrific
 
 	// SonarLint: "clone" should not be overridden (java:S2975)
 	// And I wouldn't have done that if only CharacterIterator had not required

src/main/java/ru/windcorp/jputil/chars/StringUtil.java

@@ -41,13 +41,8 @@ public class StringUtil {
 	private static final String EMPTY_PLACEHOLDER = "[empty]";
 	private static final String DEFAULT_SEPARATOR = "; ";
 
-	public static <T> String arrayToString(
-		T[] array,
-		String separator,
-		String empty,
-		String nullPlaceholder,
-		String nullArray
-	) {
+	public static <T> String arrayToString(T[] array, String separator, String empty, String nullPlaceholder,
+			String nullArray) {
 
 		if (separator == null) {
 			throw new IllegalArgumentException(new NullPointerException());
@@ -79,13 +74,8 @@ public class StringUtil {
 		return arrayToString(array, DEFAULT_SEPARATOR);
 	}
 
-	public static String iteratorToString(
-		Iterator<?> iterator,
-		String separator,
-		String empty,
-		String nullPlaceholder,
-		String nullIterator
-	) {
+	public static String iteratorToString(Iterator<?> iterator, String separator, String empty, String nullPlaceholder,
+			String nullIterator) {
 
 		if (separator == null) {
 			throw new IllegalArgumentException(new NullPointerException());
@@ -119,13 +109,8 @@ public class StringUtil {
 		return iteratorToString(iterator, DEFAULT_SEPARATOR);
 	}
 
-	public static String iterableToString(
-		Iterable<?> iterable,
-		String separator,
-		String empty,
-		String nullPlaceholder,
-		String nullIterable
-	) {
+	public static String iterableToString(Iterable<?> iterable, String separator, String empty, String nullPlaceholder,
+			String nullIterable) {
 
 		if (separator == null) {
 			throw new IllegalArgumentException(new NullPointerException());
@@ -146,14 +131,8 @@ public class StringUtil {
 		return iterableToString(iterable, DEFAULT_SEPARATOR);
 	}
 
-	public static <T> String supplierToString(
-		IntFunction<T> supplier,
-		int length,
-		String separator,
-		String empty,
-		String nullPlaceholder,
-		String nullSupplier
-	) {
+	public static <T> String supplierToString(IntFunction<T> supplier, int length, String separator, String empty,
+			String nullPlaceholder, String nullSupplier) {
 
 		if (separator == null)
 			throw new IllegalArgumentException(new NullPointerException());
@@ -163,28 +142,15 @@ public class StringUtil {
 			return empty;
 
 		if (length > 0) {
-			return supplierToStringExactly(
-				supplier,
-				length,
-				separator,
-				nullPlaceholder
-			);
+			return supplierToStringExactly(supplier, length, separator, nullPlaceholder);
 		} else {
-			return supplierToStringUntilNull(
-				supplier,
-				separator,
-				empty
-			);
+			return supplierToStringUntilNull(supplier, separator, empty);
 		}
 
 	}
 
-	private static <T> String supplierToStringExactly(
-		IntFunction<T> supplier,
-		int length,
-		String separator,
-		String nullPlaceholder
-	) {
+	private static <T> String supplierToStringExactly(IntFunction<T> supplier, int length, String separator,
+			String nullPlaceholder) {
 		T element = supplier.apply(0);
 
 		StringBuilder sb = new StringBuilder(element == null ? nullPlaceholder : element.toString());
@@ -198,11 +164,7 @@ public class StringUtil {
 		return sb.toString();
 	}
 
-	private static <T> String supplierToStringUntilNull(
-		IntFunction<T> supplier,
-		String separator,
-		String empty
-	) {
+	private static <T> String supplierToStringUntilNull(IntFunction<T> supplier, String separator, String empty) {
 		T element = supplier.apply(0);
 
 		if (element == null) {
@@ -366,11 +328,7 @@ public class StringUtil {
 		StringBuilder sb = new StringBuilder();
 
 		charLoop: for (char c : src.toCharArray()) {
-			if (
-				(resultIndex + 1) < arrayLength
-					&&
-					test.test(c)
-			) {
+			if ((resultIndex + 1) < arrayLength && test.test(c)) {
 				result[resultIndex] = resetStringBuilder(sb);
 				++resultIndex;
 				continue charLoop;
@@ -389,17 +347,17 @@ public class StringUtil {
 	 * index.
 	 * <p>
 	 * Indices {@code 0} and {@code src.length() - 1} produce {@code str}
-	 * excluding
-	 * the specified character and {@code ""}.
+	 * excluding the specified character and {@code ""}.
 	 * <p>
 	 * 
-	 * @param src the String to split
-	 * @param at  index to split at
-	 * @throws IllegalArgumentException if the index is out of bounds for
-	 *                                  {@code src}
+	 * @param src
+	 *            the String to split
+	 * @param at
+	 *            index to split at
+	 * @throws IllegalArgumentException
+	 *             if the index is out of bounds for {@code src}
 	 * @return an array containing the substrings, in order of encounter in
-	 *         {@code src}.
-	 *         Its length is always 2.
+	 *         {@code src}. Its length is always 2.
 	 */
 	public static String[] splitAt(String src, int at) {
 		Objects.requireNonNull(src, "src");
@@ -416,10 +374,7 @@ public class StringUtil {
 			return new String[] { src.substring(0, src.length() - 1), "" };
 		}
 
-		return new String[] {
-			src.substring(0, at),
-			src.substring(at + 1)
-		};
+		return new String[] { src.substring(0, at), src.substring(at + 1) };
 	}
 
 	/**
@@ -427,8 +382,7 @@ public class StringUtil {
 	 * indices.
 	 * <p>
 	 * Indices {@code 0} and {@code src.length() - 1} produce extra zero-length
-	 * outputs.
-	 * Duplicate indices produce extra zero-length outputs.
+	 * outputs. Duplicate indices produce extra zero-length outputs.
 	 * <p>
 	 * Examples:
 	 * 
@@ -439,13 +393,14 @@ public class StringUtil {
 	 * splitAt("a.b",   1, 1, 1) -> {"a", "", "", "b"}
 	 * </pre>
 	 * 
-	 * @param src the String to split
-	 * @param at  indices to split at, in any order
-	 * @throws IllegalArgumentException if some index is out of bounds for
-	 *                                  {@code src}
+	 * @param src
+	 *            the String to split
+	 * @param at
+	 *            indices to split at, in any order
+	 * @throws IllegalArgumentException
+	 *             if some index is out of bounds for {@code src}
 	 * @return an array containing the substrings, in order of encounter in
-	 *         {@code src}.
-	 *         Its length is always {@code at.length + 1}.
+	 *         {@code src}. Its length is always {@code at.length + 1}.
 	 */
 	public static String[] splitAt(String src, int... at) {
 		Objects.requireNonNull(src, "src");
@@ -553,10 +508,8 @@ public class StringUtil {
 		}
 
 		if (endPos < beginPos) {
-			throw new IllegalArgumentException(
-				"endPos must be greater than or equal to beginPos (endPos="
-					+ endPos + ", beginPos=" + beginPos + ")"
-			);
+			throw new IllegalArgumentException("endPos must be greater than or equal to beginPos (endPos=" + endPos
+					+ ", beginPos=" + beginPos + ")");
 		}
 
 		if (endPos >= Math.min(a.length, b.length)) {
@@ -592,8 +545,7 @@ public class StringUtil {
 
 	/**
 	 * Finds and returns the index of the specified appearance of the specified
-	 * character
-	 * in the given array. The search starts at index 0.
+	 * character in the given array. The search starts at index 0.
 	 * <p>
 	 * Examples:
 	 * <p>
@@ -630,10 +582,12 @@ public class StringUtil {
 	 * </tr>
 	 * </table>
 	 * 
-	 * @param src    - the array to search in.
-	 * @param target - the character to search for.
-	 * @param skip   - the amount of <code>target</code> characters to be
-	 *               skipped.
+	 * @param src
+	 *            - the array to search in.
+	 * @param target
+	 *            - the character to search for.
+	 * @param skip
+	 *            - the amount of <code>target</code> characters to be skipped.
 	 * @return The index of the <code>skip+1</code>th <code>target</code>
 	 *         character or -1, if none found.
 	 * @see StringUtil#indexFromEnd(char[], char, int)
@@ -653,8 +607,7 @@ public class StringUtil {
 
 	/**
 	 * Finds and returns the index of the specified appearance of the specified
-	 * character
-	 * in the given array. The search starts at index
+	 * character in the given array. The search starts at index
 	 * <code>src.length - 1</code>.
 	 * <p>
 	 * Examples:
@@ -692,13 +645,15 @@ public class StringUtil {
 	 * </tr>
 	 * </table>
 	 * 
-	 * @param src    - the array to search in.
-	 * @param target - the character to search for.
-	 * @param skip   - the amount of <code>target</code> characters to be
-	 *               skipped.
+	 * @param src
+	 *            - the array to search in.
+	 * @param target
+	 *            - the character to search for.
+	 * @param skip
+	 *            - the amount of <code>target</code> characters to be skipped.
 	 * @return The index of the <code>skip+1</code>th
-	 *         <code>target</code>character
-	 *         from the end of the array or -1, if none found.
+	 *         <code>target</code>character from the end of the array or -1, if
+	 *         none found.
 	 * @see StringUtil#indexFromBeginning(char[], char, int)
 	 */
 	public static int indexFromEnd(char[] src, char target, int skip) {
@@ -873,12 +828,8 @@ public class StringUtil {
 		return result;
 	}
 
-	private static void buildCombinations(
-		StringBuilder sb,
-		Collection<String> result,
-		Iterable<String>[] parts,
-		int index
-	) {
+	private static void buildCombinations(StringBuilder sb, Collection<String> result, Iterable<String>[] parts,
+			int index) {
 		if (index >= parts.length) {
 			result.add(sb.toString());
 		} else {
@@ -904,13 +855,8 @@ public class StringUtil {
 		return result;
 	}
 
-	private static void buildCombinations(
-		StringBuilder sb,
-		String[] result,
-		int[] resultIndex,
-		String[][] parts,
-		int index
-	) {
+	private static void buildCombinations(StringBuilder sb, String[] result, int[] resultIndex, String[][] parts,
+			int index) {
 		if (index >= parts.length) {
 			result[resultIndex[0]++] = sb.toString();
 		} else {
@@ -985,10 +931,7 @@ public class StringUtil {
 	}
 
 	private static char hexDigit(long value, int digit) {
-		return hexDigit(
-			(int) (value >>> (4 * digit))
-				& 0xF
-		);
+		return hexDigit((int) (value >>> (4 * digit)) & 0xF);
 	}
 
 	public static char hexDigit(int value) {

src/main/java/ru/windcorp/jputil/chars/reader/AbstractCharReader.java

@@ -27,10 +27,9 @@ public abstract class AbstractCharReader implements CharReader {
 
 	/**
 	 * Current position of this CharReader. The reader maps its input to
-	 * positions starting from 0.
-	 * Positions that are negative or lower than 0 are invalid.
-	 * {@link #current()}
-	 * will throw an exception if position is invalid.
+	 * positions starting from 0. Positions that are negative or lower than 0
+	 * are invalid. {@link #current()} will throw an exception if position is
+	 * invalid.
 	 */
 	protected int position = 0;
 

src/main/java/ru/windcorp/jputil/chars/reader/BufferedCharReader.java

@@ -51,9 +51,12 @@ public abstract class BufferedCharReader extends AbstractCharReader {
 	/**
 	 * Acquires next characters and stores them in the array.
 	 * 
-	 * @param buffer the output array
-	 * @param offset index of the first character
-	 * @param length maximum amount of characters to be pulled
+	 * @param buffer
+	 *            the output array
+	 * @param offset
+	 *            index of the first character
+	 * @param length
+	 *            maximum amount of characters to be pulled
 	 * @return the amount of characters actually pulled
 	 */
 	protected int pullChars(char[] buffer, int offset, int length) {

src/main/java/ru/windcorp/jputil/chars/reader/CharReader.java

@@ -179,8 +179,7 @@ public interface CharReader {
 
 	/**
 	 * Skips to the end of the current line. Both <code>"\n"</code>,
-	 * <code>"\r"</code>
-	 * and <code>"\r\n"</code> are considered line separators.
+	 * <code>"\r"</code> and <code>"\r\n"</code> are considered line separators.
 	 * 
 	 * @return the amount of characters in the skipped line
 	 */

src/main/java/ru/windcorp/jputil/chars/reader/StringCharReader.java

@@ -38,8 +38,7 @@ public class StringCharReader extends AbstractCharReader {
 		int end = offset + length;
 		if (end > str.length() || offset < 0)
 			throw new IllegalArgumentException(
-				"String contains [0; " + str.length() + "), requested [" + offset + "; " + end + ")"
-			);
+					"String contains [0; " + str.length() + "), requested [" + offset + "; " + end + ")");
 
 		this.offset = offset;
 		this.length = length;

src/main/java/ru/windcorp/jputil/functions/ThrowingBiConsumer.java

@@ -45,8 +45,15 @@ public interface ThrowingBiConsumer<T, U, E extends Exception> {
 
 	public static <T, U, E extends Exception> ThrowingBiConsumer<T, U, E> concat(
 			ThrowingBiConsumer<? super T, ? super U, ? extends E> first,
-		ThrowingBiConsumer<? super T, ? super U, ? extends E> second
-	) {
+			ThrowingBiConsumer<? super T, ? super U, ? extends E> second) {
+		return (t, u) -> {
+			first.accept(t, u);
+			second.accept(t, u);
+		};
+	}
+
+	public static <T, U, E extends Exception> ThrowingBiConsumer<T, U, E> concat(BiConsumer<? super T, ? super U> first,
+			ThrowingBiConsumer<? super T, ? super U, E> second) {
 		return (t, u) -> {
 			first.accept(t, u);
 			second.accept(t, u);
@@ -54,19 +61,7 @@ public interface ThrowingBiConsumer<T, U, E extends Exception> {
 	}
 
 	public static <T, U, E extends Exception> ThrowingBiConsumer<T, U, E> concat(
-		BiConsumer<? super T, ? super U> first,
-		ThrowingBiConsumer<? super T, ? super U, E> second
-	) {
-		return (t, u) -> {
-			first.accept(t, u);
-			second.accept(t, u);
-		};
-	}
-
-	public static <T, U, E extends Exception> ThrowingBiConsumer<T, U, E> concat(
-		ThrowingBiConsumer<? super T, ? super U, E> first,
-		BiConsumer<? super T, ? super U> second
-	) {
+			ThrowingBiConsumer<? super T, ? super U, E> first, BiConsumer<? super T, ? super U> second) {
 		return (t, u) -> {
 			first.accept(t, u);
 			second.accept(t, u);

src/main/java/ru/windcorp/jputil/functions/ThrowingConsumer.java

@@ -39,30 +39,24 @@ public interface ThrowingConsumer<T, E extends Exception> {
 		};
 	}
 
-	public static <T, E extends Exception> ThrowingConsumer<T, E> concat(
-		ThrowingConsumer<? super T, ? extends E> first,
-		ThrowingConsumer<? super T, ? extends E> second
-	) {
+	public static <T, E extends Exception> ThrowingConsumer<T, E> concat(ThrowingConsumer<? super T, ? extends E> first,
+			ThrowingConsumer<? super T, ? extends E> second) {
 		return t -> {
 			first.accept(t);
 			second.accept(t);
 		};
 	}
 
-	public static <T, E extends Exception> ThrowingConsumer<T, E> concat(
-		Consumer<? super T> first,
-		ThrowingConsumer<? super T, ? extends E> second
-	) {
+	public static <T, E extends Exception> ThrowingConsumer<T, E> concat(Consumer<? super T> first,
+			ThrowingConsumer<? super T, ? extends E> second) {
 		return t -> {
 			first.accept(t);
 			second.accept(t);
 		};
 	}
 
-	public static <T, E extends Exception> ThrowingConsumer<T, E> concat(
-		ThrowingConsumer<? super T, ? extends E> first,
-		Consumer<? super T> second
-	) {
+	public static <T, E extends Exception> ThrowingConsumer<T, E> concat(ThrowingConsumer<? super T, ? extends E> first,
+			Consumer<? super T> second) {
 		return t -> {
 			first.accept(t);
 			second.accept(t);

src/main/java/ru/windcorp/jputil/functions/ThrowingFunction.java

@@ -28,10 +28,8 @@ public interface ThrowingFunction<T, R, E extends Exception> {
 	R apply(T t) throws E;
 
 	@SuppressWarnings("unchecked")
-	default Function<T, R> withHandler(
-		BiConsumer<? super T, ? super E> handler,
-		Function<? super T, ? extends R> value
-	) {
+	default Function<T, R> withHandler(BiConsumer<? super T, ? super E> handler,
+			Function<? super T, ? extends R> value) {
 		return t -> {
 			try {
 				return apply(t);
@@ -59,22 +57,17 @@ public interface ThrowingFunction<T, R, E extends Exception> {
 
 	public static <T, R, I, E extends Exception> ThrowingFunction<T, R, E> compose(
 			ThrowingFunction<? super T, I, ? extends E> first,
-		ThrowingFunction<? super I, ? extends R, ? extends E> second
-	) {
+			ThrowingFunction<? super I, ? extends R, ? extends E> second) {
+		return t -> second.apply(first.apply(t));
+	}
+
+	public static <T, R, I, E extends Exception> ThrowingFunction<T, R, E> compose(Function<? super T, I> first,
+			ThrowingFunction<? super I, ? extends R, E> second) {
 		return t -> second.apply(first.apply(t));
 	}
 
 	public static <T, R, I, E extends Exception> ThrowingFunction<T, R, E> compose(
-		Function<? super T, I> first,
-		ThrowingFunction<? super I, ? extends R, E> second
-	) {
-		return t -> second.apply(first.apply(t));
-	}
-
-	public static <T, R, I, E extends Exception> ThrowingFunction<T, R, E> compose(
-		ThrowingFunction<? super T, I, E> first,
-		Function<? super I, ? extends R> second
-	) {
+			ThrowingFunction<? super T, I, E> first, Function<? super I, ? extends R> second) {
 		return t -> second.apply(first.apply(t));
 	}
 

src/main/java/ru/windcorp/jputil/functions/ThrowingRunnable.java

@@ -38,10 +38,8 @@ public interface ThrowingRunnable<E extends Exception> {
 		};
 	}
 
-	public static <E extends Exception> ThrowingRunnable<E> concat(
-		ThrowingRunnable<? extends E> first,
-		ThrowingRunnable<? extends E> second
-	) {
+	public static <E extends Exception> ThrowingRunnable<E> concat(ThrowingRunnable<? extends E> first,
+			ThrowingRunnable<? extends E> second) {
 		return () -> {
 			first.run();
 			second.run();

src/main/java/ru/windcorp/jputil/iterators/RangeIterator.java

@@ -49,10 +49,8 @@ public class RangeIterator<E> implements Iterator<E> {
 	public E next() {
 		update();
 		if (nextIndex >= from + amount) {
-			throw new NoSuchElementException(
-				"RangeIterator about to retrieve element " + nextIndex
-					+ " which exceeds upper boundary " + (from + amount)
-			);
+			throw new NoSuchElementException("RangeIterator about to retrieve element " + nextIndex
+					+ " which exceeds upper boundary " + (from + amount));
 		}
 
 		E result = parent.next();

src/main/java/ru/windcorp/progressia/ProgressiaLauncher.java

@@ -40,6 +40,7 @@ public class ProgressiaLauncher {
 		CrashReports.registerProvider(new OpenALContextProvider());
 		CrashReports.registerProvider(new ArgsContextProvider());
 		CrashReports.registerProvider(new LanguageContextProvider());
+		CrashReports.registerProvider(new ScreenContextProvider());
 		// Analyzers
 		CrashReports.registerAnalyzer(new OutOfMemoryAnalyzer());
 

src/main/java/ru/windcorp/progressia/client/Client.java

@@ -24,7 +24,7 @@ import ru.windcorp.progressia.client.graphics.world.Camera;
 import ru.windcorp.progressia.client.graphics.world.EntityAnchor;
 import ru.windcorp.progressia.client.graphics.world.LocalPlayer;
 import ru.windcorp.progressia.client.world.WorldRender;
-import ru.windcorp.progressia.common.world.WorldData;
+import ru.windcorp.progressia.common.world.DefaultWorldData;
 import ru.windcorp.progressia.common.world.entity.EntityData;
 
 public class Client {
@@ -36,7 +36,7 @@ public class Client {
 
 	private final ServerCommsChannel comms;
 
-	public Client(WorldData world, ServerCommsChannel comms) {
+	public Client(DefaultWorldData world, ServerCommsChannel comms) {
 		this.world = new WorldRender(world, this);
 		this.comms = comms;
 
@@ -69,11 +69,7 @@ public class Client {
 			return;
 		}
 
-		getCamera().setAnchor(
-			new EntityAnchor(
-				getWorld().getEntityRenderable(entity)
-			)
-		);
+		getCamera().setAnchor(new EntityAnchor(getWorld().getEntityRenderable(entity)));
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/ClientProxy.java

@@ -32,6 +32,7 @@ import ru.windcorp.progressia.common.resource.ResourceManager;
 import ru.windcorp.progressia.common.util.crash.CrashReports;
 import ru.windcorp.progressia.server.ServerState;
 import ru.windcorp.progressia.test.TestContent;
+import ru.windcorp.progressia.test.TestMusicPlayer;
 
 public class ClientProxy implements Proxy {
 
@@ -41,10 +42,8 @@ public class ClientProxy implements Proxy {
 		try {
 			RenderTaskQueue.waitAndInvoke(FlatRenderProgram::init);
 			RenderTaskQueue.waitAndInvoke(WorldRenderProgram::init);
-			RenderTaskQueue.waitAndInvoke(
-				() -> Typefaces
-					.setDefault(GNUUnifontLoader.load(ResourceManager.getResource("assets/unifont-13.0.03.hex.gz")))
-			);
+			RenderTaskQueue.waitAndInvoke(() -> Typefaces
+					.setDefault(GNUUnifontLoader.load(ResourceManager.getResource("assets/unifont-13.0.03.hex.gz"))));
 		} catch (InterruptedException e) {
 			throw CrashReports.report(e, "ClientProxy failed");
 		}
@@ -59,6 +58,8 @@ public class ClientProxy implements Proxy {
 
 		ServerState.startServer();
 		ClientState.connectToLocalServer();
+
+		TestMusicPlayer.start();
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/ClientState.java

@@ -21,7 +21,7 @@ package ru.windcorp.progressia.client;
 import ru.windcorp.progressia.client.comms.localhost.LocalServerCommsChannel;
 import ru.windcorp.progressia.client.graphics.GUI;
 import ru.windcorp.progressia.client.graphics.world.LayerWorld;
-import ru.windcorp.progressia.common.world.WorldData;
+import ru.windcorp.progressia.common.world.DefaultWorldData;
 import ru.windcorp.progressia.server.ServerState;
 import ru.windcorp.progressia.test.LayerAbout;
 import ru.windcorp.progressia.test.LayerTestUI;
@@ -41,11 +41,9 @@ public class ClientState {
 
 	public static void connectToLocalServer() {
 
-		WorldData world = new WorldData();
+		DefaultWorldData world = new DefaultWorldData();
 
-		LocalServerCommsChannel channel = new LocalServerCommsChannel(
-			ServerState.getInstance()
-		);
+		LocalServerCommsChannel channel = new LocalServerCommsChannel(ServerState.getInstance());
 
 		Client client = new Client(world, channel);
 

src/main/java/ru/windcorp/progressia/client/audio/AudioManager.java

@@ -23,6 +23,7 @@ import ru.windcorp.progressia.client.audio.backend.AudioReader;
 import ru.windcorp.progressia.client.audio.backend.Listener;
 import ru.windcorp.progressia.client.audio.backend.SoundType;
 import ru.windcorp.progressia.client.audio.backend.Speaker;
+import ru.windcorp.progressia.common.resource.Resource;
 
 import static org.lwjgl.openal.AL11.*;
 import static org.lwjgl.openal.ALC10.*;
@@ -40,13 +41,9 @@ public class AudioManager {
 
 	private static List<Speaker> soundSpeakers = new ArrayList<>(SOUNDS_NUM);
 	private static Speaker musicSpeaker;
-	private static ArrayList<SoundType> soundsBuffer = new ArrayList<>();
 
 	public static void initAL() {
-		String defaultDeviceName = alcGetString(
-			0,
-			ALC_DEFAULT_DEVICE_SPECIFIER
-		);
+		String defaultDeviceName = alcGetString(0, ALC_DEFAULT_DEVICE_SPECIFIER);
 
 		device = alcOpenDevice(defaultDeviceName);
 
@@ -75,38 +72,23 @@ public class AudioManager {
 				lastSoundIndex = 0;
 			}
 			speaker = soundSpeakers.get(lastSoundIndex);
-		} while (
-			speaker.getState()
-				.equals(Speaker.State.PLAYING_LOOP)
-		);
+		} while (speaker.getState().equals(Speaker.State.PLAYING_LOOP));
 		return speaker;
 	}
 
-	private static SoundType findSoundType(String soundID) throws Exception {
-		for (SoundType s : soundsBuffer) {
-			if (s.getId().equals(soundID)) {
-				return s;
-			}
-		}
-		throw new Exception(
-			"ERROR: The selected sound is not loaded or" +
-				" not exists"
-		);
-	}
-
-	public static Speaker initSpeaker(String soundID) {
+	public static Speaker initSpeaker(SoundType st) {
 		Speaker speaker = getLastSpeaker();
 		try {
-			findSoundType(soundID).initSpeaker(speaker);
+			st.initSpeaker(speaker);
 		} catch (Exception ex) {
 			throw new RuntimeException();
 		}
 		return speaker;
 	}
 
-	public static Speaker initMusicSpeaker(String soundID) {
+	public static Speaker initMusicSpeaker(SoundType st) {
 		try {
-			findSoundType(soundID).initSpeaker(musicSpeaker);
+			st.initSpeaker(musicSpeaker);
 		} catch (Exception ex) {
 			throw new RuntimeException();
 		}
@@ -120,11 +102,11 @@ public class AudioManager {
 		}
 	}
 
-	public static void loadSound(String path, String id, AudioFormat format) {
+	public static void loadSound(Resource resource, String id, AudioFormat format) {
 		if (format == AudioFormat.MONO) {
-			soundsBuffer.add(AudioReader.readAsMono(path, id));
+			AudioRegistry.getInstance().register(AudioReader.readAsMono(resource, id));
 		} else {
-			soundsBuffer.add(AudioReader.readAsStereo(path, id));
+			AudioRegistry.getInstance().register(AudioReader.readAsStereo(resource, id));
 		}
 	}
 

src/main/java/ru/windcorp/progressia/client/audio/AudioRegistry.java

@@ -0,0 +1,34 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package ru.windcorp.progressia.client.audio;
+
+import ru.windcorp.progressia.client.audio.backend.SoundType;
+import ru.windcorp.progressia.common.util.namespaces.NamespacedInstanceRegistry;
+
+public class AudioRegistry extends NamespacedInstanceRegistry<SoundType> {
+
+	private static final AudioRegistry INSTANCE = new AudioRegistry();
+
+	/**
+	 * @return the instance
+	 */
+	public static AudioRegistry getInstance() {
+		return INSTANCE;
+	}
+
+}

src/main/java/ru/windcorp/progressia/client/audio/AudioSystem.java

@@ -18,6 +18,8 @@
 
 package ru.windcorp.progressia.client.audio;
 
+import ru.windcorp.progressia.common.resource.ResourceManager;
+
 public class AudioSystem {
 	static public void initialize() {
 		AudioManager.initAL();
@@ -27,10 +29,7 @@ public class AudioSystem {
 	}
 
 	static void loadAudioData() {
-		AudioManager.loadSound(
-			"assets/sounds/block_destroy_clap.ogg",
-			"Progressia:BlockDestroy",
-			AudioFormat.MONO
-		);
+		AudioManager.loadSound(ResourceManager.getResource("assets/sounds/block_destroy_clap.ogg"),
+				"Progressia:BlockDestroy", AudioFormat.MONO);
 	}
 }

src/main/java/ru/windcorp/progressia/client/audio/Music.java

@@ -19,72 +19,34 @@
 package ru.windcorp.progressia.client.audio;
 
 import glm.vec._3.Vec3;
+import ru.windcorp.progressia.client.audio.backend.SoundType;
 import ru.windcorp.progressia.client.audio.backend.Speaker;
-import ru.windcorp.progressia.common.util.namespaces.Namespaced;
 
-public class Music extends Namespaced {
-	private Vec3 position = new Vec3();
-	private Vec3 velocity = new Vec3();
-	private float pitch = 1.0f;
-	private float gain = 1.0f;
+public class Music extends Sound {
+
+	public Music(SoundType soundType, int timeLength, float pitch, float gain) {
+		super(soundType, timeLength, new Vec3(), new Vec3(), pitch, gain);
+	}
+
+	public Music(SoundType soundType) {
+		super(soundType);
+	}
+
+	public Music(String id, int timeLength, float pitch, float gain) {
+		super(id, timeLength, new Vec3(), new Vec3(), pitch, gain);
+	}
 
 	public Music(String id) {
 		super(id);
 	}
 
-	public Music(
-		String id,
-		Vec3 position,
-		Vec3 velocity,
-		float pitch,
-		float gain
-	) {
-		this(id);
-		this.position = position;
-		this.velocity = velocity;
-		this.pitch = pitch;
-		this.gain = gain;
+	@Override
+	protected Speaker initSpeaker() {
+		return AudioManager.initMusicSpeaker(soundType);
 	}
 
-	public void play(boolean loop) {
-		Speaker speaker = AudioManager.initMusicSpeaker(this.getId());
-		speaker.setGain(gain);
-		speaker.setPitch(pitch);
-		speaker.setPosition(position);
-		speaker.setVelocity(velocity);
-
-		if (loop) {
-			speaker.playLoop();
-		} else {
-			speaker.play();
-		}
-	}
-
-	public void setGain(float gain) {
-		this.gain = gain;
-	}
-
-	public void setPitch(float pitch) {
-		this.pitch = pitch;
-	}
-
-	public void setVelocity(Vec3 velocity) {
-		this.velocity = velocity;
-	}
-
-	public Vec3 getPosition() {
-		return position;
-	}
-
-	public float getGain() {
-		return gain;
-	}
-
-	public Vec3 getVelocity() {
-		return velocity;
-	}
-
-	public float getPitch() {
-		return pitch;
+	@Override
+	public void setPosition(Vec3 position) {
+		throw new UnsupportedOperationException();
 	}
 }

src/main/java/ru/windcorp/progressia/client/audio/Sound.java

@@ -19,28 +19,28 @@
 package ru.windcorp.progressia.client.audio;
 
 import glm.vec._3.Vec3;
+import ru.windcorp.progressia.client.audio.backend.SoundType;
 import ru.windcorp.progressia.client.audio.backend.Speaker;
-import ru.windcorp.progressia.common.util.namespaces.Namespaced;
 
-public class SoundEffect
-	extends Namespaced {
+public class Sound {
 
-	private Vec3 position = new Vec3();
-	private Vec3 velocity = new Vec3();
-	private float pitch = 1.0f;
-	private float gain = 1.0f;
+	protected Vec3 position = new Vec3(0f, 0f, 0f);
+	protected Vec3 velocity = new Vec3(0f, 0f, 0f);
+	protected float pitch = 1.0f;
+	protected float gain = 1.0f;
+	protected int timeLength = 0;
 
-	public SoundEffect(String id) {
-		super(id);
+	protected SoundType soundType;
+
+	public Sound(SoundType soundType) {
+		this.soundType = soundType;
 	}
 
-	public SoundEffect(
-		String id,
-		Vec3 position,
-		Vec3 velocity,
-		float pitch,
-		float gain
-	) {
+	public Sound(String id) {
+		this(AudioRegistry.getInstance().get(id));
+	}
+
+	public Sound(String id, int timeLength, Vec3 position, Vec3 velocity, float pitch, float gain) {
 		this(id);
 		this.position = position;
 		this.velocity = velocity;
@@ -48,8 +48,20 @@ public class SoundEffect
 		this.gain = gain;
 	}
 
+	public Sound(SoundType soundType, int timeLength, Vec3 position, Vec3 velocity, float pitch, float gain) {
+		this(soundType);
+		this.position = position;
+		this.velocity = velocity;
+		this.pitch = pitch;
+		this.gain = gain;
+	}
+
+	protected Speaker initSpeaker() {
+		return AudioManager.initSpeaker(soundType);
+	}
+
 	public void play(boolean loop) {
-		Speaker speaker = AudioManager.initSpeaker(this.getId());
+		Speaker speaker = initSpeaker();
 		speaker.setGain(gain);
 		speaker.setPitch(pitch);
 		speaker.setPosition(position);
@@ -93,4 +105,9 @@ public class SoundEffect
 	public float getPitch() {
 		return pitch;
 	}
+
+	public double getDuration() {
+		return soundType.getDuration();
+	}
+
 }

src/main/java/ru/windcorp/progressia/client/audio/backend/AudioReader.java

@@ -33,39 +33,24 @@ public class AudioReader {
 	}
 
 	// TODO fix converting from mono-stereo
-	private static SoundType readAsSpecified(String path, String id, int format) {
+	private static SoundType readAsSpecified(Resource resource, String id, int format) {
 		IntBuffer channelBuffer = BufferUtils.createIntBuffer(1);
 		IntBuffer rateBuffer = BufferUtils.createIntBuffer(1);
 
-		Resource res = ResourceManager.getResource(path);
+		ShortBuffer rawAudio = decodeVorbis(resource, channelBuffer, rateBuffer);
 
-		ShortBuffer rawAudio = decodeVorbis(res, channelBuffer, rateBuffer);
-
-		return new SoundType(
-			id,
-			rawAudio,
-			format,
-			rateBuffer.get(0)
-		);
+		return new SoundType(id, rawAudio, format, rateBuffer.get(0));
 	}
 
-	public static SoundType readAsMono(String path, String id) {
-		return readAsSpecified(path, id, AL_FORMAT_MONO16);
+	public static SoundType readAsMono(Resource resource, String id) {
+		return readAsSpecified(resource, id, AL_FORMAT_MONO16);
 	}
 
-	public static SoundType readAsStereo(String path, String id) {
-		return readAsSpecified(path, id, AL_FORMAT_STEREO16);
+	public static SoundType readAsStereo(Resource resource, String id) {
+		return readAsSpecified(resource, id, AL_FORMAT_STEREO16);
 	}
 
-	private static ShortBuffer decodeVorbis(
-		Resource dataToDecode,
-		IntBuffer channelsBuffer,
-		IntBuffer rateBuffer
-	) {
-		return stb_vorbis_decode_memory(
-			dataToDecode.readAsBytes(),
-			channelsBuffer,
-			rateBuffer
-		);
+	private static ShortBuffer decodeVorbis(Resource dataToDecode, IntBuffer channelsBuffer, IntBuffer rateBuffer) {
+		return stb_vorbis_decode_memory(dataToDecode.readAsBytes(), channelsBuffer, rateBuffer);
 	}
 }

src/main/java/ru/windcorp/progressia/client/audio/backend/Listener.java

@@ -55,9 +55,8 @@ public class Listener {
 		if (isInWorld) {
 
 			if (wasInWorld) {
-				velocity.set(camera.getLastAnchorPosition()).sub(position).div(
-					(float) GraphicsInterface.getFrameLength()
-				);
+				velocity.set(camera.getLastAnchorPosition()).sub(position)
+						.div((float) GraphicsInterface.getFrameLength());
 			} else {
 				// If !wasInWorld, previous position is nonsence. Assume 0.
 				velocity.set(0);
@@ -72,9 +71,9 @@ public class Listener {
 		}
 
 		/*
-		 * Only apply if there is a chance that params changed.
-		 * This can only happen if we are in world now (isInWorld) or we just
-		 * left world (wasInWorld, then we need to reset).
+		 * Only apply if there is a chance that params changed. This can only
+		 * happen if we are in world now (isInWorld) or we just left world
+		 * (wasInWorld, then we need to reset).
 		 */
 		if (isInWorld || wasInWorld) {
 			applyParams();
@@ -91,17 +90,7 @@ public class Listener {
 	private void applyParams() {
 		alListener3f(AL_POSITION, position.x, position.y, position.z);
 		alListener3f(AL_VELOCITY, velocity.x, velocity.y, velocity.z);
-		alListenerfv(
-			AL_ORIENTATION,
-			new float[] {
-				oriAt.x,
-				oriAt.y,
-				oriAt.z,
-				oriUp.x,
-				oriUp.y,
-				oriUp.z
-			}
-		);
+		alListenerfv(AL_ORIENTATION, new float[] { oriAt.x, oriAt.y, oriAt.z, oriUp.x, oriUp.y, oriUp.z });
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/audio/backend/SoundType.java

@@ -21,6 +21,9 @@ package ru.windcorp.progressia.client.audio.backend;
 import ru.windcorp.progressia.common.util.namespaces.Namespaced;
 
 import java.nio.ShortBuffer;
+
+import org.lwjgl.openal.AL10;
+
 import static org.lwjgl.openal.AL11.*;
 
 public class SoundType extends Namespaced {
@@ -29,13 +32,9 @@ public class SoundType extends Namespaced {
 	private int sampleRate;
 	private int format;
 	private int audioBuffer;
+	private double duration;
 
-	public SoundType(
-		String id,
-		ShortBuffer rawAudio,
-		int format,
-		int sampleRate
-	) {
+	public SoundType(String id, ShortBuffer rawAudio, int format, int sampleRate) {
 		super(id);
 		this.rawAudio = rawAudio;
 		this.sampleRate = sampleRate;
@@ -46,9 +45,14 @@ public class SoundType extends Namespaced {
 	private void createAudioBuffer() {
 		this.audioBuffer = alGenBuffers();
 		alBufferData(audioBuffer, format, rawAudio, sampleRate);
+		duration = rawAudio.limit() / (double) sampleRate / (format == AL10.AL_FORMAT_STEREO16 ? 2 : 1);
 	}
 
 	public void initSpeaker(Speaker speaker) {
 		speaker.setAudioData(audioBuffer);
 	}
+
+	public double getDuration() {
+		return duration;
+	}
 }

src/main/java/ru/windcorp/progressia/client/audio/backend/Speaker.java

@@ -24,9 +24,7 @@ import static org.lwjgl.openal.AL11.*;
 public class Speaker {
 
 	public enum State {
-		NOT_PLAYING,
-		PLAYING,
-		PLAYING_LOOP
+		NOT_PLAYING, PLAYING, PLAYING_LOOP
 	}
 
 	// Buffers
@@ -49,13 +47,7 @@ public class Speaker {
 		setAudioData(audioData);
 	}
 
-	public Speaker(
-		int audioData,
-		Vec3 position,
-		Vec3 velocity,
-		float pitch,
-		float gain
-	) {
+	public Speaker(int audioData, Vec3 position, Vec3 velocity, float pitch, float gain) {
 		setAudioData(audioData);
 		setPosition(position);
 		setVelocity(velocity);
@@ -63,12 +55,7 @@ public class Speaker {
 		setGain(gain);
 	}
 
-	public Speaker(
-		Vec3 position,
-		Vec3 velocity,
-		float pitch,
-		float gain
-	) {
+	public Speaker(Vec3 position, Vec3 velocity, float pitch, float gain) {
 		setPosition(position);
 		setVelocity(velocity);
 		setPitch(pitch);
@@ -120,6 +107,7 @@ public class Speaker {
 	}
 
 	public void setAudioData(int audioData) {
+		stop();
 		this.audioData = audioData;
 		alSourcei(this.sourceData, AL_BUFFER, audioData);
 	}

src/main/java/ru/windcorp/progressia/client/comms/DefaultClientCommsListener.java

@@ -39,9 +39,7 @@ public class DefaultClientCommsListener implements CommsListener {
 	@Override
 	public void onPacketReceived(Packet packet) {
 		if (packet instanceof PacketAffectWorld) {
-			((PacketAffectWorld) packet).apply(
-				getClient().getWorld().getData()
-			);
+			((PacketAffectWorld) packet).apply(getClient().getWorld().getData());
 		} else if (packet instanceof PacketSetLocalPlayer) {
 			setLocalPlayer((PacketSetLocalPlayer) packet);
 		}

src/main/java/ru/windcorp/progressia/client/comms/controls/ControlTriggerLambda.java

@@ -33,17 +33,12 @@ public class ControlTriggerLambda extends ControlTriggerInputBased {
 	private final Predicate<InputEvent> predicate;
 	private final BiConsumer<InputEvent, ControlData> dataWriter;
 
-	public ControlTriggerLambda(
-		String id,
-		Predicate<InputEvent> predicate,
-		BiConsumer<InputEvent, ControlData> dataWriter
-	) {
+	public ControlTriggerLambda(String id, Predicate<InputEvent> predicate,
+			BiConsumer<InputEvent, ControlData> dataWriter) {
 		super(id);
 
-		this.packetId = NamespacedUtil.getId(
-			NamespacedUtil.getNamespace(id),
-			"ControlKeyPress" + NamespacedUtil.getName(id)
-		);
+		this.packetId = NamespacedUtil.getId(NamespacedUtil.getNamespace(id),
+				"ControlKeyPress" + NamespacedUtil.getName(id));
 
 		this.predicate = predicate;
 		this.dataWriter = dataWriter;
@@ -54,10 +49,7 @@ public class ControlTriggerLambda extends ControlTriggerInputBased {
 		if (!predicate.test(event))
 			return null;
 
-		PacketControl packet = new PacketControl(
-			packetId,
-			ControlDataRegistry.getInstance().create(getId())
-		);
+		PacketControl packet = new PacketControl(packetId, ControlDataRegistry.getInstance().create(getId()));
 
 		dataWriter.accept(event, packet.getControl());
 

src/main/java/ru/windcorp/progressia/client/comms/controls/ControlTriggerLocalLambda.java

@@ -0,0 +1,49 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package ru.windcorp.progressia.client.comms.controls;
+
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+
+import ru.windcorp.progressia.client.graphics.input.InputEvent;
+import ru.windcorp.progressia.common.comms.controls.PacketControl;
+
+public class ControlTriggerLocalLambda extends ControlTriggerInputBased {
+
+	private final Predicate<InputEvent> predicate;
+	private final Consumer<InputEvent> action;
+
+	public ControlTriggerLocalLambda(String id, Predicate<InputEvent> predicate, Consumer<InputEvent> action) {
+		super(id);
+
+		this.predicate = predicate;
+		this.action = action;
+	}
+
+	@Override
+	public PacketControl onInputEvent(InputEvent event) {
+		if (!predicate.test(event))
+			return null;
+
+		action.accept(event);
+
+		return null;
+	}
+
+}

src/main/java/ru/windcorp/progressia/client/comms/controls/ControlTriggers.java

@@ -27,133 +27,119 @@ import ru.windcorp.progressia.common.comms.controls.ControlData;
 
 public class ControlTriggers {
 
-	public static ControlTriggerInputBased of(
-		String id,
-		BiConsumer<InputEvent, ControlData> dataWriter,
-		Predicate<InputEvent> predicate
-	) {
+	public static ControlTriggerInputBased of(String id, BiConsumer<InputEvent, ControlData> dataWriter,
+			Predicate<InputEvent> predicate) {
 		return new ControlTriggerLambda(id, predicate, dataWriter);
 	}
 
-	public static ControlTriggerInputBased of(
-		String id,
-		Consumer<ControlData> dataWriter,
-		Predicate<InputEvent> predicate
-	) {
-		return of(
-			id,
-			(input, control) -> dataWriter.accept(control),
-			predicate
-		);
+	public static ControlTriggerInputBased of(String id, Consumer<ControlData> dataWriter,
+			Predicate<InputEvent> predicate) {
+		return of(id, (input, control) -> dataWriter.accept(control), predicate);
 	}
 
-	public static ControlTriggerInputBased of(
-		String id,
-		Predicate<InputEvent> predicate
-	) {
-		return of(
-			id,
-			(input, control) -> {
-			},
-			predicate
-		);
+	public static ControlTriggerInputBased of(String id, Predicate<InputEvent> predicate) {
+		return of(id, (input, control) -> {
+		}, predicate);
 	}
 
 	@SafeVarargs
-	public static <I extends InputEvent> ControlTriggerInputBased of(
-		String id,
-		Class<I> inputType,
-		BiConsumer<I, ControlData> dataWriter,
-		Predicate<I>... predicates
-	) {
-		return of(
-			id,
-			createCheckedDataWriter(inputType, dataWriter),
-			createCheckedCompoundPredicate(inputType, predicates)
-		);
+	public static <I extends InputEvent> ControlTriggerInputBased of(String id, Class<I> inputType,
+			BiConsumer<I, ControlData> dataWriter, Predicate<I>... predicates) {
+		return of(id, createCheckedDataWriter(inputType, dataWriter),
+				createCheckedCompoundPredicate(inputType, predicates));
 	}
 
 	@SafeVarargs
-	public static <I extends InputEvent> ControlTriggerInputBased of(
-		String id,
-		Class<I> inputType,
-		Consumer<ControlData> dataWriter,
-		Predicate<I>... predicates
-	) {
-		return of(
-			id,
-			inputType,
-			(input, control) -> dataWriter.accept(control),
-			predicates
-		);
+	public static <I extends InputEvent> ControlTriggerInputBased of(String id, Class<I> inputType,
+			Consumer<ControlData> dataWriter, Predicate<I>... predicates) {
+		return of(id, inputType, (input, control) -> dataWriter.accept(control), predicates);
 	}
 
 	@SafeVarargs
-	public static <I extends InputEvent> ControlTriggerInputBased of(
-		String id,
-		Class<I> inputType,
-		Predicate<I>... predicates
-	) {
-		return of(
-			id,
-			(input, control) -> {
-			},
-			createCheckedCompoundPredicate(inputType, predicates)
-		);
+	public static <I extends InputEvent> ControlTriggerInputBased of(String id, Class<I> inputType,
+			Predicate<I>... predicates) {
+		return of(id, (input, control) -> {
+		}, createCheckedCompoundPredicate(inputType, predicates));
 	}
 
 	@SafeVarargs
-	public static ControlTriggerInputBased of(
-		String id,
-		BiConsumer<InputEvent, ControlData> dataWriter,
-		Predicate<InputEvent>... predicates
-	) {
-		return of(
-			id,
-			InputEvent.class,
-			dataWriter,
-			predicates
-		);
+	public static ControlTriggerInputBased of(String id, BiConsumer<InputEvent, ControlData> dataWriter,
+			Predicate<InputEvent>... predicates) {
+		return of(id, InputEvent.class, dataWriter, predicates);
 	}
 
 	@SafeVarargs
-	public static <I extends InputEvent> ControlTriggerInputBased of(
-		String id,
-		Consumer<ControlData> dataWriter,
-		Predicate<InputEvent>... predicates
-	) {
-		return of(
-			id,
-			(input, control) -> dataWriter.accept(control),
-			predicates
-		);
+	public static <I extends InputEvent> ControlTriggerInputBased of(String id, Consumer<ControlData> dataWriter,
+			Predicate<InputEvent>... predicates) {
+		return of(id, (input, control) -> dataWriter.accept(control), predicates);
 	}
 
 	@SafeVarargs
-	public static ControlTriggerInputBased of(
-		String id,
-		Predicate<InputEvent>... predicates
-	) {
-		return of(
-			id,
-			InputEvent.class,
-			(input, control) -> {
-			},
-			predicates
-		);
+	public static ControlTriggerInputBased of(String id, Predicate<InputEvent>... predicates) {
+		return of(id, InputEvent.class, (input, control) -> {
+		}, predicates);
+	}
+
+	//
+	//
+	///
+	///
+	//
+	//
+	//
+	//
+	//
+	//
+	//
+	//
+	//
+
+	public static ControlTriggerInputBased localOf(String id, Consumer<InputEvent> action,
+			Predicate<InputEvent> predicate) {
+		return new ControlTriggerLocalLambda(id, predicate, action);
+	}
+
+	public static ControlTriggerInputBased localOf(String id, Runnable action, Predicate<InputEvent> predicate) {
+		return localOf(id, input -> action.run(), predicate);
+	}
+
+	@SafeVarargs
+	public static <I extends InputEvent> ControlTriggerInputBased localOf(String id, Class<I> inputType,
+			Consumer<I> action, Predicate<I>... predicates) {
+		return localOf(id, createCheckedAction(inputType, action),
+				createCheckedCompoundPredicate(inputType, predicates));
+	}
+
+	@SafeVarargs
+	public static <I extends InputEvent> ControlTriggerInputBased localOf(String id, Class<I> inputType,
+			Runnable action, Predicate<I>... predicates) {
+		return localOf(id, inputType, input -> action.run(), predicates);
+	}
+
+	@SafeVarargs
+	public static ControlTriggerInputBased localOf(String id, Consumer<InputEvent> action,
+			Predicate<InputEvent>... predicates) {
+		return localOf(id, InputEvent.class, action, predicates);
+	}
+
+	@SafeVarargs
+	public static <I extends InputEvent> ControlTriggerInputBased localOf(String id, Runnable action,
+			Predicate<InputEvent>... predicates) {
+		return of(id, input -> action.run(), predicates);
 	}
 
 	private static <I extends InputEvent> BiConsumer<InputEvent, ControlData> createCheckedDataWriter(
-		Class<I> inputType,
-		BiConsumer<I, ControlData> dataWriter
-	) {
+			Class<I> inputType, BiConsumer<I, ControlData> dataWriter) {
 		return (inputEvent, control) -> dataWriter.accept(inputType.cast(inputEvent), control);
 	}
 
-	private static <I extends InputEvent> Predicate<InputEvent> createCheckedCompoundPredicate(
-		Class<I> inputType,
-		Predicate<I>[] predicates
-	) {
+	private static <I extends InputEvent> Consumer<InputEvent> createCheckedAction(Class<I> inputType,
+			Consumer<I> action) {
+		return inputEvent -> action.accept(inputType.cast(inputEvent));
+	}
+
+	private static <I extends InputEvent> Predicate<InputEvent> createCheckedCompoundPredicate(Class<I> inputType,
+			Predicate<I>[] predicates) {
 		return new CompoundCastPredicate<>(inputType, predicates);
 	}
 

src/main/java/ru/windcorp/progressia/client/comms/controls/InputBasedControls.java

@@ -32,8 +32,7 @@ public class InputBasedControls {
 		this.client = client;
 
 		this.controls = ControlTriggerRegistry.getInstance().values().stream()
-			.filter(ControlTriggerInputBased.class::isInstance)
-			.toArray(ControlTriggerInputBased[]::new);
+				.filter(ControlTriggerInputBased.class::isInstance).toArray(ControlTriggerInputBased[]::new);
 	}
 
 	public void handleInput(Input input) {

src/main/java/ru/windcorp/progressia/client/comms/localhost/LocalServerCommsChannel.java

@@ -34,11 +34,7 @@ public class LocalServerCommsChannel extends ServerCommsChannel {
 	public void connect(String login) {
 		setState(State.CONNECTED);
 
-		this.localClient = new LocalClient(
-			server.getClientManager().grabClientId(),
-			login,
-			this
-		);
+		this.localClient = new LocalClient(server.getClientManager().grabClientId(), login, this);
 
 		server.getClientManager().addClient(localClient);
 	}

src/main/java/ru/windcorp/progressia/client/graphics/Colors.java

@@ -34,7 +34,13 @@ public class Colors {
 		DEBUG_BLUE = toVector(0xFF0000FF),
 		DEBUG_CYAN = toVector(0xFF00FFFF),
 		DEBUG_MAGENTA = toVector(0xFFFF00FF),
-		DEBUG_YELLOW = toVector(0xFFFFFF00);
+		DEBUG_YELLOW = toVector(0xFFFFFF00),
+	
+		LIGHT_GRAY = toVector(0xFFCBCBD0),
+		BLUE = toVector(0xFF37A2E6),
+		HOVER_BLUE = toVector(0xFFC3E4F7),
+		DISABLED_GRAY = toVector(0xFFE5E5E5),
+		DISABLED_BLUE = toVector(0xFFB2D8ED);
 
 	public static Vec4 toVector(int argb) {
 		return toVector(argb, new Vec4());

src/main/java/ru/windcorp/progressia/client/graphics/GUI.java

@@ -24,6 +24,7 @@ import java.util.List;
 
 import com.google.common.eventbus.Subscribe;
 
+import ru.windcorp.progressia.client.graphics.backend.GraphicsInterface;
 import ru.windcorp.progressia.client.graphics.input.CursorEvent;
 import ru.windcorp.progressia.client.graphics.input.FrameResizeEvent;
 import ru.windcorp.progressia.client.graphics.input.InputEvent;
@@ -57,15 +58,24 @@ public class GUI {
 	}
 
 	public static void addBottomLayer(Layer layer) {
-		modify(layers -> layers.add(layer));
+		modify(layers -> {
+			layers.add(layer);
+			layer.onAdded();
+		});
 	}
 
 	public static void addTopLayer(Layer layer) {
-		modify(layers -> layers.add(0, layer));
+		modify(layers -> {
+			layers.add(0, layer);
+			layer.onAdded();
+		});
 	}
 
 	public static void removeLayer(Layer layer) {
-		modify(layers -> layers.remove(layer));
+		modify(layers -> {
+			layers.remove(layer);
+			layer.onRemoved();
+		});
 	}
 
 	private static void modify(LayerStackModification mod) {
@@ -78,12 +88,33 @@ public class GUI {
 
 	public static void render() {
 		synchronized (LAYERS) {
+			
+			if (!MODIFICATION_QUEUE.isEmpty()) {
 				MODIFICATION_QUEUE.forEach(action -> action.affect(LAYERS));
 				MODIFICATION_QUEUE.clear();
 				
+				boolean isMouseCurrentlyCaptured = GraphicsInterface.isMouseCaptured();
+				Layer.CursorPolicy policy = Layer.CursorPolicy.REQUIRE;
+				
+				for (Layer layer : LAYERS) {
+					Layer.CursorPolicy currentPolicy = layer.getCursorPolicy();
+					
+					if (currentPolicy != Layer.CursorPolicy.INDIFFERENT) {
+						policy = currentPolicy;
+						break;
+					}
+				}
+				
+				boolean shouldCaptureMouse = (policy == Layer.CursorPolicy.FORBID);
+				if (shouldCaptureMouse != isMouseCurrentlyCaptured) {
+					GraphicsInterface.setMouseCaptured(shouldCaptureMouse);
+				}
+			}
+			
 			for (int i = LAYERS.size() - 1; i >= 0; --i) {
 				LAYERS.get(i).render();
 			}
+			
 		}
 	}
 

src/main/java/ru/windcorp/progressia/client/graphics/Layer.java

@@ -31,15 +31,52 @@ public abstract class Layer {
 
 	private final AtomicBoolean isValid = new AtomicBoolean(false);
 	
+	/**
+	 * Represents various requests that a {@link Layer} can make regarding the
+	 * presence of a visible cursor. The value of the highest layer that is not
+	 * {@link #INDIFFERENT} is used.
+	 */
+	public static enum CursorPolicy {
+		/**
+		 * Require that a cursor is visible.
+		 */
+		REQUIRE,
+
+		/**
+		 * The {@link Layer} should not affect the presence or absence of a
+		 * visible cursor; lower layers should be consulted.
+		 */
+		INDIFFERENT,
+
+		/**
+		 * Forbid a visible cursor.
+		 */
+		FORBID
+	}
+	
+	private CursorPolicy cursorPolicy = CursorPolicy.INDIFFERENT;
+
 	public Layer(String name) {
 		this.name = name;
 	}
 	
+	public String getName() {
+		return name;
+	}
+
 	@Override
 	public String toString() {
 		return "Layer " + name;
 	}
 	
+	public CursorPolicy getCursorPolicy() {
+		return cursorPolicy;
+	}
+	
+	public void setCursorPolicy(CursorPolicy cursorPolicy) {
+		this.cursorPolicy = cursorPolicy;
+	}
+
 	void render() {
 		GraphicsInterface.startNextLayer();
 
@@ -79,4 +116,12 @@ public abstract class Layer {
 		return GraphicsInterface.getFrameHeight();
 	}
 	
+	protected void onAdded() {
+		// Do nothing
+	}
+	
+	protected void onRemoved() {
+		// Do nothing
+	}
+
 }

src/main/java/ru/windcorp/progressia/client/graphics/backend/GraphicsBackend.java

@@ -18,11 +18,11 @@
 
 package ru.windcorp.progressia.client.graphics.backend;
 
-import static org.lwjgl.opengl.GL11.*;
-
 import glm.vec._2.i.Vec2i;
+import org.lwjgl.glfw.GLFWVidMode;
 
 import static org.lwjgl.glfw.GLFW.*;
+import static org.lwjgl.opengl.GL11.*;
 
 public class GraphicsBackend {
 
@@ -38,9 +38,30 @@ public class GraphicsBackend {
 
 	private static boolean faceCullingEnabled = false;
 
+	private static boolean isFullscreen = false;
+	private static boolean vSyncEnabled = false;
+	private static boolean isGLFWInitialized = false;
+	private static boolean isOpenGLInitialized = false;
+
 	private GraphicsBackend() {
 	}
 
+	public static boolean isGLFWInitialized() {
+		return isGLFWInitialized;
+	}
+
+	static void setGLFWInitialized(boolean isGLFWInitialized) {
+		GraphicsBackend.isGLFWInitialized = isGLFWInitialized;
+	}
+
+	public static boolean isOpenGLInitialized() {
+		return isOpenGLInitialized;
+	}
+
+	static void setOpenGLInitialized(boolean isOpenGLInitialized) {
+		GraphicsBackend.isOpenGLInitialized = isOpenGLInitialized;
+	}
+
 	public static void initialize() {
 		startRenderThread();
 	}
@@ -128,4 +149,48 @@ public class GraphicsBackend {
 		faceCullingEnabled = useFaceCulling;
 	}
 
+	public static boolean isFullscreen() {
+		return isFullscreen;
+	}
+
+	public static boolean isVSyncEnabled() {
+		return vSyncEnabled;
+	}
+
+	public static void setFullscreen() {
+		GLFWVidMode vidmode = glfwGetVideoMode(glfwGetPrimaryMonitor());
+		glfwSetWindowMonitor(getWindowHandle(), glfwGetPrimaryMonitor(), 0, 0, vidmode.width(), vidmode.height(), 0);
+		isFullscreen = true;
+	}
+
+	public static void setWindowed() {
+		GLFWVidMode vidmode = glfwGetVideoMode(glfwGetPrimaryMonitor());
+		glfwSetWindowMonitor(getWindowHandle(), 0, (vidmode.width() - getFrameWidth()) / 2,
+				(vidmode.height() - getFrameHeight()) / 2, getFrameWidth(), getFrameHeight(), 0);
+		isFullscreen = false;
+	}
+
+	public static void setVSyncEnabled(boolean enable) {
+		glfwSwapInterval(enable ? 1 : 0);
+		vSyncEnabled = enable;
+	}
+
+	public static int getRefreshRate() {
+		GLFWVidMode vidmode = glfwGetVideoMode(glfwGetPrimaryMonitor());
+		return vidmode.refreshRate();
+	}
+	
+	public static boolean isMouseCaptured() {
+		return glfwGetInputMode(windowHandle, GLFW_CURSOR) == GLFW_CURSOR_DISABLED;
+	}
+	
+	public static void setMouseCaptured(boolean capture) {
+		int mode = capture ? GLFW_CURSOR_DISABLED : GLFW_CURSOR_NORMAL;
+		glfwSetInputMode(windowHandle, GLFW_CURSOR, mode);
+		
+		if (!capture) {
+			glfwSetCursorPos(windowHandle, FRAME_SIZE.x / 2.0, FRAME_SIZE.y / 2.0);
+		}
+	}
+	
 }

src/main/java/ru/windcorp/progressia/client/graphics/backend/GraphicsInterface.java

@@ -73,4 +73,21 @@ public class GraphicsInterface {
 		GraphicsBackend.startNextLayer();
 	}
 
+	public static void makeFullscreen(boolean state) {
+		if (state) {
+			GraphicsBackend.setFullscreen();
+		} else {
+			GraphicsBackend.setWindowed();
+		}
+		GraphicsBackend.setVSyncEnabled(GraphicsBackend.isVSyncEnabled());
+	}
+	
+	public static boolean isMouseCaptured() {
+		return GraphicsBackend.isMouseCaptured();
+	}
+	
+	public static void setMouseCaptured(boolean capture) {
+		GraphicsBackend.setMouseCaptured(capture);
+	}
+
 }

src/main/java/ru/windcorp/progressia/client/graphics/backend/InputHandler.java

@@ -49,13 +49,7 @@ public class InputHandler {
 
 	private static final ModifiableKeyEvent THE_KEY_EVENT = new ModifiableKeyEvent();
 
-	static void handleKeyInput(
-		long window,
-		int key,
-		int scancode,
-		int action,
-		int mods
-	) {
+	static void handleKeyInput(long window, int key, int scancode, int action, int mods) {
 		if (GraphicsBackend.getWindowHandle() != window)
 			return;
 		THE_KEY_EVENT.initialize(key, scancode, action, mods);
@@ -71,12 +65,7 @@ public class InputHandler {
 		}
 	}
 
-	static void handleMouseButtonInput(
-		long window,
-		int key,
-		int action,
-		int mods
-	) {
+	static void handleMouseButtonInput(long window, int key, int action, int mods) {
 		handleKeyInput(window, key, Integer.MAX_VALUE - key, action, mods);
 	}
 
@@ -97,11 +86,7 @@ public class InputHandler {
 
 	private static final ModifiableCursorMoveEvent THE_CURSOR_MOVE_EVENT = new ModifiableCursorMoveEvent();
 
-	static void handleMouseMoveInput(
-		long window,
-		double x,
-		double y
-	) {
+	static void handleMouseMoveInput(long window, double x, double y) {
 		if (GraphicsBackend.getWindowHandle() != window)
 			return;
 		y = GraphicsInterface.getFrameHeight() - y; // Flip y axis
@@ -131,11 +116,7 @@ public class InputHandler {
 
 	private static final ModifiableWheelScrollEvent THE_WHEEL_SCROLL_EVENT = new ModifiableWheelScrollEvent();
 
-	static void handleWheelScroll(
-		long window,
-		double xoffset,
-		double yoffset
-	) {
+	static void handleWheelScroll(long window, double xoffset, double yoffset) {
 		if (GraphicsBackend.getWindowHandle() != window)
 			return;
 		THE_WHEEL_SCROLL_EVENT.initialize(xoffset, yoffset);
@@ -162,10 +143,7 @@ public class InputHandler {
 	/*
 	 * NB: this is NOT a GLFW callback, the raw callback is in GraphicsBackend
 	 */
-	static void handleFrameResize(
-		int width,
-		int height
-	) {
+	static void handleFrameResize(int width, int height) {
 		THE_FRAME_RESIZE_EVENT.initialize(width, height);
 		dispatch(THE_FRAME_RESIZE_EVENT);
 	}

src/main/java/ru/windcorp/progressia/client/graphics/backend/InputTracker.java

@@ -24,10 +24,7 @@ import gnu.trove.set.hash.TIntHashSet;
 
 public class InputTracker {
 
-	private static final Vec2d CURSOR_POSITION = new Vec2d(
-		Double.NaN,
-		Double.NaN
-	);
+	private static final Vec2d CURSOR_POSITION = new Vec2d(Double.NaN, Double.NaN);
 
 	private static final TIntSet PRESSED_KEYS = new TIntHashSet(256);
 

src/main/java/ru/windcorp/progressia/client/graphics/backend/LWJGLInitializer.java

@@ -50,6 +50,7 @@ class LWJGLInitializer {
 	private static void initializeGLFW() {
 		// TODO Do GLFW error handling: check glfwInit, setup error callback
 		glfwInit();
+		GraphicsBackend.setGLFWInitialized(true);
 	}
 
 	private static void createWindow() {
@@ -64,10 +65,8 @@ class LWJGLInitializer {
 
 		GraphicsBackend.setWindowHandle(handle);
 
-		glfwSetInputMode(handle, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
-
 		glfwMakeContextCurrent(handle);
-		glfwSwapInterval(0);
+		glfwSwapInterval(0); // TODO: remove after config system is added
 	}
 
 	private static void positionWindow() {
@@ -87,21 +86,16 @@ class LWJGLInitializer {
 		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
 		RenderTaskQueue.schedule(OpenGLObjectTracker::deleteEnqueuedObjects);
+		GraphicsBackend.setOpenGLInitialized(true);
 	}
 
 	private static void setupWindowCallbacks() {
 		long handle = GraphicsBackend.getWindowHandle();
 
-		glfwSetFramebufferSizeCallback(
-			handle,
-			GraphicsBackend::onFrameResized
-		);
+		glfwSetFramebufferSizeCallback(handle, GraphicsBackend::onFrameResized);
 
 		glfwSetKeyCallback(handle, InputHandler::handleKeyInput);
-		glfwSetMouseButtonCallback(
-			handle,
-			InputHandler::handleMouseButtonInput
-		);
+		glfwSetMouseButtonCallback(handle, InputHandler::handleMouseButtonInput);
 
 		glfwSetCursorPosCallback(handle, InputHandler::handleMouseMoveInput);
 

src/main/java/ru/windcorp/progressia/client/graphics/backend/OpenGLObjectTracker.java

@@ -34,19 +34,13 @@ public class OpenGLObjectTracker {
 	private static final ReferenceQueue<OpenGLDeletable> DELETE_QUEUE = new ReferenceQueue<>();
 
 	public synchronized static void register(OpenGLDeletable object, IntConsumer glDeleter) {
-		GLPhantomReference<OpenGLDeletable> glRef = new GLPhantomReference<>(
-			object,
-			DELETE_QUEUE,
-			object.getHandle(),
-			glDeleter
-		);
+		GLPhantomReference<OpenGLDeletable> glRef = new GLPhantomReference<>(object, DELETE_QUEUE, object.getHandle(),
+				glDeleter);
 		TO_DELETE.add(glRef);
 	}
 
 	public static void deleteAllObjects() {
-		for (
-			GLPhantomReference<OpenGLDeletable> glRef : TO_DELETE
-		) {
+		for (GLPhantomReference<OpenGLDeletable> glRef : TO_DELETE) {
 			glRef.clear();
 		}
 	}
@@ -75,20 +69,16 @@ public class OpenGLObjectTracker {
 		 * It is possible to create a phantom reference with a {@code null}
 		 * queue, but such a reference is completely useless: Its {@code get}
 		 * method will always return {@code null} and, since it does not have a
-		 * queue,
-		 * it will never be enqueued.
+		 * queue, it will never be enqueued.
 		 *
-		 * @param referent the object the new phantom reference will refer to
-		 * @param q        the queue with which the reference is to be
-		 *                 registered,
-		 *                 or {@code null} if registration is not required
+		 * @param referent
+		 *            the object the new phantom reference will refer to
+		 * @param q
+		 *            the queue with which the reference is to be registered, or
+		 *            {@code null} if registration is not required
 		 */
-		public GLPhantomReference(
-			T referent,
-			ReferenceQueue<? super T> q,
-			int referentGLhandle,
-			IntConsumer GLDeleter
-		) {
+		public GLPhantomReference(T referent, ReferenceQueue<? super T> q, int referentGLhandle,
+				IntConsumer GLDeleter) {
 			super(referent, q);
 			this.referentGLhandle = referentGLhandle;
 			this.GLDeleter = GLDeleter;

src/main/java/ru/windcorp/progressia/client/graphics/backend/RenderTaskQueue.java

@@ -41,11 +41,7 @@ public class RenderTaskQueue {
 		HANDLER.invokeNow(task);
 	}
 
-	public static <E extends Exception> void waitAndInvoke(
-		ThrowingRunnable<E> task
-	)
-		throws InterruptedException,
-		E {
+	public static <E extends Exception> void waitAndInvoke(ThrowingRunnable<E> task) throws InterruptedException, E {
 		HANDLER.waitAndInvoke(task);
 	}
 

src/main/java/ru/windcorp/progressia/client/graphics/backend/Usage.java

@@ -23,9 +23,7 @@ import static org.lwjgl.opengl.GL15.GL_STATIC_DRAW;
 import static org.lwjgl.opengl.GL15.GL_STREAM_DRAW;
 
 public enum Usage { // TODO add _COPY and _READ, pref. as another enum
-	STATIC(GL_STATIC_DRAW),
-	DYNAMIC(GL_DYNAMIC_DRAW),
-	STREAM(GL_STREAM_DRAW);
+	STATIC(GL_STATIC_DRAW), DYNAMIC(GL_DYNAMIC_DRAW), STREAM(GL_STREAM_DRAW);
 
 	private final int glCode;
 

src/main/java/ru/windcorp/progressia/client/graphics/backend/VertexBufferObject.java

@@ -28,8 +28,7 @@ import ru.windcorp.progressia.client.graphics.backend.OpenGLObjectTracker.OpenGL
 public class VertexBufferObject implements OpenGLDeletable {
 
 	public static enum BindTarget {
-		ARRAY(GL_ARRAY_BUFFER),
-		ELEMENT_ARRAY(GL_ELEMENT_ARRAY_BUFFER);
+		ARRAY(GL_ARRAY_BUFFER), ELEMENT_ARRAY(GL_ELEMENT_ARRAY_BUFFER);
 
 		private final int glCode;
 

src/main/java/ru/windcorp/progressia/client/graphics/backend/shaders/CombinedShader.java

@@ -32,12 +32,7 @@ public class CombinedShader extends Shader {
 		for (int i = 1; i < resources.length; ++i) {
 			if (ShaderType.guessByResourceName(resources[i]) != first) {
 				throw new IllegalArgumentException(
-					"Deduced shader types of "
-						+ resources[0]
-						+ " and "
-						+ resources[i]
-						+ " differ"
-				);
+						"Deduced shader types of " + resources[0] + " and " + resources[i] + " differ");
 			}
 		}
 
@@ -71,19 +66,8 @@ public class CombinedShader extends Shader {
 			if (contents.codePointAt(versionIndex) == '#') {
 				final String versionAnnotation = "#version ";
 
-				if (
-					contents.regionMatches(
-						versionIndex,
-						versionAnnotation,
-						0,
-						versionAnnotation.length()
-					)
-				) {
-					contents = contents.substring(
-						versionIndex
-							+ versionAnnotation.length()
-							+ "120".length()
-					);
+				if (contents.regionMatches(versionIndex, versionAnnotation, 0, versionAnnotation.length())) {
+					contents = contents.substring(versionIndex + versionAnnotation.length() + "120".length());
 				}
 
 			}

src/main/java/ru/windcorp/progressia/client/graphics/backend/shaders/Shader.java

@@ -57,10 +57,7 @@ public class Shader implements OpenGLDeletable {
 			if (resource.contains("fsh"))
 				return FRAGMENT;
 
-			throw new IllegalArgumentException(
-				"Cannot deduce shader type from resource name \"" +
-					resource + "\""
-			);
+			throw new IllegalArgumentException("Cannot deduce shader type from resource name \"" + resource + "\"");
 		}
 	}
 
@@ -90,10 +87,7 @@ public class Shader implements OpenGLDeletable {
 	}
 
 	public Shader(String resource) {
-		this(
-			ShaderType.guessByResourceName(resource),
-			getShaderResource(resource).readAsString()
-		);
+		this(ShaderType.guessByResourceName(resource), getShaderResource(resource).readAsString());
 	}
 
 	@Override

src/main/java/ru/windcorp/progressia/client/graphics/backend/shaders/attributes/AttributeVertexArray.java

@@ -51,104 +51,29 @@ public class AttributeVertexArray extends Attribute {
 		}
 	}
 
-	public void set(
-		int size,
-		boolean normalized,
-		int stride,
-		ByteBuffer pointer
-	) {
-		glVertexAttribPointer(
-			handle,
-			size,
-			GL_BYTE,
-			normalized,
-			stride,
-			pointer
-		);
+	public void set(int size, boolean normalized, int stride, ByteBuffer pointer) {
+		glVertexAttribPointer(handle, size, GL_BYTE, normalized, stride, pointer);
 	}
 
-	public void set(
-		int size,
-		boolean normalized,
-		int stride,
-		FloatBuffer pointer
-	) {
-		glVertexAttribPointer(
-			handle,
-			size,
-			GL_FLOAT,
-			normalized,
-			stride,
-			pointer
-		);
+	public void set(int size, boolean normalized, int stride, FloatBuffer pointer) {
+		glVertexAttribPointer(handle, size, GL_FLOAT, normalized, stride, pointer);
 	}
 
-	public void set(
-		int size,
-		boolean normalized,
-		int stride,
-		IntBuffer pointer
-	) {
-		glVertexAttribPointer(
-			handle,
-			size,
-			GL_INT,
-			normalized,
-			stride,
-			pointer
-		);
+	public void set(int size, boolean normalized, int stride, IntBuffer pointer) {
+		glVertexAttribPointer(handle, size, GL_INT, normalized, stride, pointer);
 	}
 
-	public void set(
-		int size,
-		boolean normalized,
-		int stride,
-		ShortBuffer pointer
-	) {
-		glVertexAttribPointer(
-			handle,
-			size,
-			GL_SHORT,
-			normalized,
-			stride,
-			pointer
-		);
+	public void set(int size, boolean normalized, int stride, ShortBuffer pointer) {
+		glVertexAttribPointer(handle, size, GL_SHORT, normalized, stride, pointer);
 	}
 
-	public void set(
-		int size,
-		int type,
-		boolean normalized,
-		int stride,
-		long pointer
-	) {
-		glVertexAttribPointer(
-			handle,
-			size,
-			type,
-			normalized,
-			stride,
-			pointer
-		);
+	public void set(int size, int type, boolean normalized, int stride, long pointer) {
+		glVertexAttribPointer(handle, size, type, normalized, stride, pointer);
 	}
 
-	public void set(
-		int size,
-		int type,
-		boolean normalized,
-		int stride,
-		VertexBufferObject vbo,
-		long offset
-	) {
+	public void set(int size, int type, boolean normalized, int stride, VertexBufferObject vbo, long offset) {
 		glBindBuffer(GL_ARRAY_BUFFER, vbo.getHandle());
-		glVertexAttribPointer(
-			handle,
-			size,
-			type,
-			normalized,
-			stride,
-			offset
-		);
+		glVertexAttribPointer(handle, size, type, normalized, stride, offset);
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/graphics/flat/FlatRenderHelper.java

@@ -37,8 +37,7 @@ public abstract class FlatRenderHelper extends ShapeRenderHelper {
 		float width = GraphicsInterface.getFrameWidth();
 		float height = GraphicsInterface.getFrameHeight();
 
-		return finalTransform.identity().translate(-1, -1, 0)
-			.scale(2 / width, 2 / height, 1 / MAX_DEPTH)
+		return finalTransform.identity().translate(-1, -1, 0).scale(2 / width, 2 / height, 1 / MAX_DEPTH)
 				.mul(getTransform());
 	}
 

src/main/java/ru/windcorp/progressia/client/graphics/flat/FlatRenderProgram.java

@@ -33,10 +33,8 @@ public class FlatRenderProgram extends ShapeRenderProgram {
 	private static FlatRenderProgram def = null;
 
 	public static void init() {
-		def = new FlatRenderProgram(
-			new String[] { "FlatDefault.vertex.glsl" },
-			new String[] { "FlatDefault.fragment.glsl" }
-		);
+		def = new FlatRenderProgram(new String[] { "FlatDefault.vertex.glsl" },
+				new String[] { "FlatDefault.fragment.glsl" });
 	}
 
 	public static FlatRenderProgram getDefault() {
@@ -48,20 +46,13 @@ public class FlatRenderProgram extends ShapeRenderProgram {
 	private static final String FLAT_VERTEX_SHADER_RESOURCE = "Flat.vertex.glsl";
 	private static final String FLAT_FRAGMENT_SHADER_RESOURCE = "Flat.fragment.glsl";
 
-	private static final String MASK_COUNT_UNIFORM_NAME = "maskCount",
-		MASKS_UNIFORM_NAME = "masks";
+	private static final String MASK_COUNT_UNIFORM_NAME = "maskCount", MASKS_UNIFORM_NAME = "masks";
 
 	private final Uniform1Int maskCountUniform;
 	private final Uniform2Float masksUniform;
 
-	public FlatRenderProgram(
-		String[] vertexShaderResources,
-		String[] fragmentShaderResources
-	) {
-		super(
-			attachVertexShader(vertexShaderResources),
-			attachFragmentShader(fragmentShaderResources)
-		);
+	public FlatRenderProgram(String[] vertexShaderResources, String[] fragmentShaderResources) {
+		super(attachVertexShader(vertexShaderResources), attachFragmentShader(fragmentShaderResources));
 
 		this.maskCountUniform = getUniform(MASK_COUNT_UNIFORM_NAME).as1Int();
 		this.masksUniform = getUniform(MASKS_UNIFORM_NAME).as2Float();

src/main/java/ru/windcorp/progressia/client/graphics/flat/Mask.java

@@ -88,8 +88,7 @@ public class Mask {
 
 	@Override
 	public String toString() {
-		return "(" + getStartX() + "; " + getStartY() +
-			") -> (" + getEndX() + "; " + getEndY() + ")";
+		return "(" + getStartX() + "; " + getStartY() + ") -> (" + getEndX() + "; " + getEndY() + ")";
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/graphics/flat/MaskStack.java

@@ -24,9 +24,8 @@ import org.lwjgl.BufferUtils;
 
 public class MaskStack {
 
-	private final FloatBuffer buffer = BufferUtils.createFloatBuffer(
-		FlatRenderProgram.MASK_STACK_SIZE * TransformedMask.SIZE_IN_FLOATS
-	);
+	private final FloatBuffer buffer = BufferUtils
+			.createFloatBuffer(FlatRenderProgram.MASK_STACK_SIZE * TransformedMask.SIZE_IN_FLOATS);
 
 	public void pushMask(TransformedMask mask) {
 		mask.writeToBuffer(buffer);

src/main/java/ru/windcorp/progressia/client/graphics/flat/RenderTarget.java

@@ -29,8 +29,8 @@ import glm.vec._3.Vec3;
 import glm.vec._4.Vec4;
 import ru.windcorp.progressia.client.graphics.Colors;
 import ru.windcorp.progressia.client.graphics.backend.Usage;
-import ru.windcorp.progressia.client.graphics.model.Face;
-import ru.windcorp.progressia.client.graphics.model.Faces;
+import ru.windcorp.progressia.client.graphics.model.ShapePart;
+import ru.windcorp.progressia.client.graphics.model.ShapeParts;
 import ru.windcorp.progressia.client.graphics.model.Shape;
 import ru.windcorp.progressia.client.graphics.model.Renderable;
 import ru.windcorp.progressia.client.graphics.texture.Texture;
@@ -84,7 +84,7 @@ public class RenderTarget {
 
 	private final Deque<TransformedMask> maskStack = new LinkedList<>();
 	private final Deque<Mat4> transformStack = new LinkedList<>();
-	private final List<Face> currentClipFaces = new ArrayList<>();
+	private final List<ShapePart> currentClipFaces = new ArrayList<>();
 
 	private int depth = 0;
 
@@ -94,8 +94,8 @@ public class RenderTarget {
 
 	protected void assembleCurrentClipFromFaces() {
 		if (!currentClipFaces.isEmpty()) {
-			Face[] faces = currentClipFaces.toArray(
-				new Face[currentClipFaces.size()]
+			ShapePart[] faces = currentClipFaces.toArray(
+				new ShapePart[currentClipFaces.size()]
 			);
 			currentClipFaces.clear();
 
@@ -189,16 +189,13 @@ public class RenderTarget {
 
 	public void addCustomRenderer(Renderable renderable) {
 		assembleCurrentClipFromFaces();
-		assembled.add(
-			new Clip(
-				maskStack,
-				getTransform(),
-				renderable
-			)
-		);
+		
+		float depth = this.depth--;
+		Mat4 transform = new Mat4().translate(0, 0, depth).mul(getTransform());
+		assembled.add(new Clip(maskStack, transform, renderable));
 	}
 
-	protected void addFaceToCurrentClip(Face face) {
+	protected void addFaceToCurrentClip(ShapePart face) {
 		currentClipFaces.add(face);
 	}
 
@@ -270,7 +267,7 @@ public class RenderTarget {
 		fill(Colors.toVector(color));
 	}
 
-	public Face createRectagleFace(
+	public ShapePart createRectagleFace(
 		int x,
 		int y,
 		int width,
@@ -280,7 +277,7 @@ public class RenderTarget {
 	) {
 		float depth = this.depth--;
 
-		return Faces.createRectangle(
+		return ShapeParts.createRectangle(
 			FlatRenderProgram.getDefault(),
 			texture,
 			color,
@@ -291,7 +288,7 @@ public class RenderTarget {
 		);
 	}
 
-	public Face createRectagleFace(
+	public ShapePart createRectagleFace(
 		int x,
 		int y,
 		int width,

src/main/java/ru/windcorp/progressia/client/graphics/flat/TransformedMask.java

@@ -42,14 +42,8 @@ public class TransformedMask {
 	private Vec4 endXstartY = null;
 	private Vec4 endXendY = null;
 
-	public TransformedMask(
-		Vec2 origin,
-		Vec2 width,
-		Vec2 height,
-		Vec2 counterOrigin,
-		Vec2 counterWidth,
-		Vec2 counterHeight
-	) {
+	public TransformedMask(Vec2 origin, Vec2 width, Vec2 height, Vec2 counterOrigin, Vec2 counterWidth,
+			Vec2 counterHeight) {
 		set(origin, width, height, counterOrigin, counterWidth, counterHeight);
 	}
 
@@ -61,14 +55,8 @@ public class TransformedMask {
 		// Do nothing
 	}
 
-	public TransformedMask set(
-		Vec2 origin,
-		Vec2 width,
-		Vec2 height,
-		Vec2 counterOrigin,
-		Vec2 counterWidth,
-		Vec2 counterHeight
-	) {
+	public TransformedMask set(Vec2 origin, Vec2 width, Vec2 height, Vec2 counterOrigin, Vec2 counterWidth,
+			Vec2 counterHeight) {
 		this.origin.set(origin.x, origin.y);
 		this.width.set(width.x, width.y);
 		this.height.set(height.x, height.y);
@@ -112,35 +100,17 @@ public class TransformedMask {
 	}
 
 	private void setFields() {
-		origin.set(
-			startXstartY.x,
-			startXstartY.y
-		);
+		origin.set(startXstartY.x, startXstartY.y);
 
-		width.set(
-			endXstartY.x - startXstartY.x,
-			endXstartY.y - startXstartY.y
-		);
+		width.set(endXstartY.x - startXstartY.x, endXstartY.y - startXstartY.y);
 
-		height.set(
-			startXendY.x - startXstartY.x,
-			startXendY.y - startXstartY.y
-		);
+		height.set(startXendY.x - startXstartY.x, startXendY.y - startXstartY.y);
 
-		counterOrigin.set(
-			endXendY.x,
-			endXendY.y
-		);
+		counterOrigin.set(endXendY.x, endXendY.y);
 
-		counterWidth.set(
-			startXendY.x - endXendY.x,
-			startXendY.y - endXendY.y
-		);
+		counterWidth.set(startXendY.x - endXendY.x, startXendY.y - endXendY.y);
 
-		counterHeight.set(
-			endXstartY.x - endXendY.x,
-			endXstartY.y - endXendY.y
-		);
+		counterHeight.set(endXstartY.x - endXendY.x, endXstartY.y - endXendY.y);
 	}
 
 	public void writeToBuffer(FloatBuffer output) {

src/main/java/ru/windcorp/progressia/client/graphics/font/Font.java

@@ -68,17 +68,11 @@ public class Font {
 		return color;
 	}
 
-	public Renderable assemble(
-		CharSequence chars,
-		float maxWidth
-	) {
+	public Renderable assemble(CharSequence chars, float maxWidth) {
 		return typeface.assembleStatic(chars, style, align, maxWidth, color);
 	}
 
-	public Renderable assembleDynamic(
-		Supplier<CharSequence> supplier,
-		float maxWidth
-	) {
+	public Renderable assembleDynamic(Supplier<CharSequence> supplier, float maxWidth) {
 		return typeface.assembleDynamic(supplier, style, align, maxWidth, color);
 	}
 
@@ -102,7 +96,8 @@ public class Font {
 	 * Creates a new {@link Font} with the specified {@code style} exactly. This
 	 * object's style is ignored.
 	 * 
-	 * @param style the new style
+	 * @param style
+	 *            the new style
 	 * @return the new font
 	 */
 	public Font withStyle(int style) {

src/main/java/ru/windcorp/progressia/client/graphics/font/GNUUnifontLoader.java

@@ -81,8 +81,7 @@ public class GNUUnifontLoader {
 
 	private static BufferedReader createReader(Resource resource) throws IOException {
 		return new BufferedReader(
-			new InputStreamReader(new GZIPInputStream(resource.getInputStream()), StandardCharsets.UTF_8)
-		);
+				new InputStreamReader(new GZIPInputStream(resource.getInputStream()), StandardCharsets.UTF_8));
 	}
 
 	private static Stream<String> createStream(BufferedReader reader) {
@@ -97,13 +96,8 @@ public class GNUUnifontLoader {
 
 			char c = getChar(declar);
 
-			TextureDataEditor editor = new TextureDataEditor(
-				width,
-				GNUUnifont.HEIGHT,
-				width,
-				GNUUnifont.HEIGHT,
-				TEXTURE_SETTINGS
-			);
+			TextureDataEditor editor = new TextureDataEditor(width, GNUUnifont.HEIGHT, width, GNUUnifont.HEIGHT,
+					TEXTURE_SETTINGS);
 
 			for (int y = 0; y < GNUUnifont.HEIGHT; ++y) {
 				for (int x = 0; x < width; ++x) {
@@ -165,8 +159,7 @@ public class GNUUnifontLoader {
 
 				if (!((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F'))) {
 					throw new IOException(
-						"Illegal char in declar \"" + declar + "\" at index " + i + "; expected 0-9A-F"
-					);
+							"Illegal char in declar \"" + declar + "\" at index " + i + "; expected 0-9A-F");
 				}
 			}
 		}
@@ -190,8 +183,7 @@ public class GNUUnifontLoader {
 	}
 
 	private static Collector<AtlasGlyph, ?, TCharObjectMap<Texture>> createMapper() {
-		return Collector.of(
-			TCharObjectHashMap<Texture>::new,
+		return Collector.of(TCharObjectHashMap<Texture>::new,
 
 				(map, glyph) -> map.put(glyph.c, glyph.texture),
 
@@ -200,8 +192,7 @@ public class GNUUnifontLoader {
 					return a;
 				},
 
-			Characteristics.UNORDERED
-		);
+				Characteristics.UNORDERED);
 	}
 
 	private GNUUnifontLoader() {

src/main/java/ru/windcorp/progressia/client/graphics/font/SpriteTypeface.java

@@ -33,8 +33,8 @@ import gnu.trove.stack.TIntStack;
 import gnu.trove.stack.array.TIntArrayStack;
 import ru.windcorp.progressia.client.graphics.Colors;
 import ru.windcorp.progressia.client.graphics.backend.Usage;
-import ru.windcorp.progressia.client.graphics.model.Face;
-import ru.windcorp.progressia.client.graphics.model.Faces;
+import ru.windcorp.progressia.client.graphics.model.ShapePart;
+import ru.windcorp.progressia.client.graphics.model.ShapeParts;
 import ru.windcorp.progressia.client.graphics.model.Shape;
 import ru.windcorp.progressia.client.graphics.model.ShapeRenderHelper;
 import ru.windcorp.progressia.client.graphics.model.ShapeRenderProgram;
@@ -144,7 +144,7 @@ public abstract class SpriteTypeface extends Typeface {
 		return new Shape(
 			Usage.STATIC,
 			getProgram(),
-			Faces.createRectangle(
+			ShapeParts.createRectangle(
 				getProgram(),
 				getTexture(c),
 				Colors.WHITE,
@@ -167,7 +167,7 @@ public abstract class SpriteTypeface extends Typeface {
 		private final Renderable unitLine = new Shape(
 			Usage.STATIC,
 			getProgram(),
-			Faces.createRectangle(
+			ShapeParts.createRectangle(
 				getProgram(),
 				null,
 				Vectors.UNIT_4,
@@ -257,7 +257,7 @@ public abstract class SpriteTypeface extends Typeface {
 
 		private class SDWorkspace extends SpriteTypeface.Workspace {
 
-			private final Collection<Face> faces = new ArrayList<>();
+			private final Collection<ShapePart> faces = new ArrayList<>();
 
 			private final Vec3 origin = new Vec3();
 			private final Vec3 width = new Vec3();
@@ -298,7 +298,7 @@ public abstract class SpriteTypeface extends Typeface {
 			workspace.height.sub(workspace.origin);
 
 			workspace.faces.add(
-				Faces.createRectangle(
+				ShapeParts.createRectangle(
 					getProgram(),
 					texture,
 					color,
@@ -314,7 +314,7 @@ public abstract class SpriteTypeface extends Typeface {
 			return new Shape(
 				Usage.STATIC,
 				getProgram(),
-				workspace.faces.toArray(new Face[workspace.faces.size()])
+				workspace.faces.toArray(new ShapePart[workspace.faces.size()])
 			);
 		}
 

src/main/java/ru/windcorp/progressia/client/graphics/font/Typeface.java

@@ -29,12 +29,8 @@ import ru.windcorp.progressia.common.util.Vectors;
 public abstract class Typeface extends Named {
 
 	public static class Style {
-		public static final int BOLD = 1 << 0,
-			ITALIC = 1 << 1,
-			UNDERLINED = 1 << 2,
-			STRIKETHRU = 1 << 3,
-			SHADOW = 1 << 4,
-			OUTLINED = 1 << 5;
+		public static final int BOLD = 1 << 0, ITALIC = 1 << 1, UNDERLINED = 1 << 2, STRIKETHRU = 1 << 3,
+				SHADOW = 1 << 4, OUTLINED = 1 << 5;
 
 		public static final int PLAIN = 0;
 
@@ -71,40 +67,19 @@ public abstract class Typeface extends Named {
 		super(name);
 	}
 
-	public abstract Renderable assembleStatic(
-		CharSequence chars,
-		int style,
-		float align,
-		float maxWidth,
-		Vec4 color
-	);
+	public abstract Renderable assembleStatic(CharSequence chars, int style, float align, float maxWidth, Vec4 color);
 
-	public abstract Renderable assembleDynamic(
-		Supplier<CharSequence> supplier,
-		int style,
-		float align,
-		float maxWidth,
-		Vec4 color
-	);
+	public abstract Renderable assembleDynamic(Supplier<CharSequence> supplier, int style, float align, float maxWidth,
+			Vec4 color);
 
-	public int getWidth(
-		CharSequence chars,
-		int style,
-		float align,
-		float maxWidth
-	) {
+	public int getWidth(CharSequence chars, int style, float align, float maxWidth) {
 		Vec2i v = Vectors.grab2i();
 		v = getSize(chars, style, align, maxWidth, v);
 		Vectors.release(v);
 		return v.x;
 	}
 
-	public int getHeight(
-		CharSequence chars,
-		int style,
-		float align,
-		float maxWidth
-	) {
+	public int getHeight(CharSequence chars, int style, float align, float maxWidth) {
 		Vec2i v = Vectors.grab2i();
 		v = getSize(chars, style, align, maxWidth, v);
 		Vectors.release(v);
@@ -113,13 +88,7 @@ public abstract class Typeface extends Named {
 
 	public abstract int getLineHeight();
 
-	public abstract Vec2i getSize(
-		CharSequence chars,
-		int style,
-		float align,
-		float maxWidth,
-		Vec2i result
-	);
+	public abstract Vec2i getSize(CharSequence chars, int style, float align, float maxWidth, Vec2i result);
 
 	public abstract boolean supports(char c);
 

src/main/java/ru/windcorp/progressia/client/graphics/gui/BasicButton.java

@@ -0,0 +1,151 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package ru.windcorp.progressia.client.graphics.gui;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Objects;
+import java.util.function.Consumer;
+
+import org.lwjgl.glfw.GLFW;
+
+import com.google.common.eventbus.Subscribe;
+
+import ru.windcorp.progressia.client.graphics.font.Font;
+import ru.windcorp.progressia.client.graphics.gui.event.ButtonEvent;
+import ru.windcorp.progressia.client.graphics.gui.event.EnableEvent;
+import ru.windcorp.progressia.client.graphics.gui.event.FocusEvent;
+import ru.windcorp.progressia.client.graphics.gui.event.HoverEvent;
+import ru.windcorp.progressia.client.graphics.gui.layout.LayoutAlign;
+import ru.windcorp.progressia.client.graphics.input.KeyEvent;
+
+public abstract class BasicButton extends Component {
+	
+	private final Label label;
+
+	private boolean isPressed = false;
+	private final Collection<Consumer<BasicButton>> actions = Collections.synchronizedCollection(new ArrayList<>());
+
+	public BasicButton(String name, String label, Font labelFont) {
+		super(name);
+		this.label = new Label(name + ".Label", labelFont, label);
+
+		setLayout(new LayoutAlign(10));
+		addChild(this.label);
+
+		setFocusable(true);
+		reassembleAt(ARTrigger.HOVER, ARTrigger.FOCUS, ARTrigger.ENABLE);
+
+		// Click triggers
+		addListener(KeyEvent.class, e -> {
+			if (e.isRepeat()) {
+				return false;
+			} else if (
+				e.isLeftMouseButton() ||
+				e.getKey() == GLFW.GLFW_KEY_SPACE ||
+				e.getKey() == GLFW.GLFW_KEY_ENTER
+			) {
+				setPressed(e.isPress());
+				return true;
+			} else {
+				return false;
+			}
+		});
+		
+		addListener(new Object() {
+			
+			// Release when losing focus
+			@Subscribe
+			public void onFocusChange(FocusEvent e) {
+				if (!e.getNewState()) {
+					setPressed(false);
+				}
+			}
+			
+			// Release when hover ends
+			@Subscribe
+			public void onHoverEnded(HoverEvent e) {
+				if (!e.isNowHovered()) {
+					setPressed(false);
+				}
+			}
+			
+			// Release when disabled
+			@Subscribe
+			public void onDisabled(EnableEvent e) {
+				if (!e.getComponent().isEnabled()) {
+					setPressed(false);
+				}
+			}
+			
+			// Trigger virtualClick when button is released
+			@Subscribe
+			public void onRelease(ButtonEvent.Release e) {
+				virtualClick();
+			}
+			
+		});
+	}
+
+	public BasicButton(String name, String label) {
+		this(name, label, new Font());
+	}
+
+	public boolean isPressed() {
+		return isPressed;
+	}
+	
+	public void click() {
+		setPressed(true);
+		setPressed(false);
+	}
+
+	public void setPressed(boolean isPressed) {
+		if (this.isPressed != isPressed) {
+			this.isPressed = isPressed;
+			
+			if (isPressed) {
+				takeFocus();
+			}
+
+			dispatchEvent(ButtonEvent.create(this, this.isPressed));
+		}
+	}
+	
+	public BasicButton addAction(Consumer<BasicButton> action) {
+		this.actions.add(Objects.requireNonNull(action, "action"));
+		return this;
+	}
+	
+	public boolean removeAction(Consumer<BasicButton> action) {
+		return this.actions.remove(action);
+	}
+	
+	public void virtualClick() {
+		this.actions.forEach(action -> {
+			action.accept(this);
+		});
+	}
+
+	public Label getLabel() {
+		return label;
+	}
+	
+}

src/main/java/ru/windcorp/progressia/client/graphics/gui/Button.java

@@ -0,0 +1,79 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package ru.windcorp.progressia.client.graphics.gui;
+
+import glm.vec._4.Vec4;
+import ru.windcorp.progressia.client.graphics.flat.RenderTarget;
+import ru.windcorp.progressia.client.graphics.font.Font;
+import ru.windcorp.progressia.client.graphics.Colors;
+
+public class Button extends BasicButton {
+
+	public Button(String name, String label, Font labelFont) {
+		super(name, label, labelFont);
+	}
+	
+	public Button(String name, String label) {
+		this(name, label, new Font());
+	}
+
+	@Override
+	protected void assembleSelf(RenderTarget target) {
+		// Border
+		
+		Vec4 borderColor;
+		if (isPressed() || isHovered() || isFocused()) {
+			borderColor = Colors.BLUE;
+		} else {
+			borderColor = Colors.LIGHT_GRAY;
+		}
+		target.fill(getX(), getY(), getWidth(), getHeight(), borderColor);
+		
+		// Inside area
+		
+		if (isPressed()) {
+			// Do nothing
+		} else {
+			Vec4 backgroundColor;
+			if (isHovered() && isEnabled()) {
+				backgroundColor = Colors.HOVER_BLUE;
+			} else {
+				backgroundColor = Colors.WHITE;
+			}
+			target.fill(getX() + 2, getY() + 2, getWidth() - 4, getHeight() - 4, backgroundColor);
+		}
+		
+		// Change label font color
+		
+		if (isPressed()) {
+			getLabel().setFont(getLabel().getFont().withColor(Colors.WHITE));
+		} else {
+			getLabel().setFont(getLabel().getFont().withColor(Colors.BLACK));
+		}
+	}
+	
+	@Override
+	protected void postAssembleSelf(RenderTarget target) {
+		// Apply disable tint
+		
+		if (!isEnabled()) {
+			target.fill(getX(), getY(), getWidth(), getHeight(), Colors.toVector(0x88FFFFFF));
+		}
+	}
+}

src/main/java/ru/windcorp/progressia/client/graphics/gui/Checkbox.java

@@ -0,0 +1,149 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package ru.windcorp.progressia.client.graphics.gui;
+
+import glm.vec._2.i.Vec2i;
+import glm.vec._4.Vec4;
+import ru.windcorp.progressia.client.graphics.Colors;
+import ru.windcorp.progressia.client.graphics.flat.RenderTarget;
+import ru.windcorp.progressia.client.graphics.font.Font;
+import ru.windcorp.progressia.client.graphics.font.Typefaces;
+import ru.windcorp.progressia.client.graphics.gui.layout.LayoutAlign;
+import ru.windcorp.progressia.client.graphics.gui.layout.LayoutHorizontal;
+
+public class Checkbox extends BasicButton {
+	
+	private class Tick extends Component {
+
+		public Tick() {
+			super(Checkbox.this.getName() + ".Tick");
+			
+			setPreferredSize(new Vec2i(Typefaces.getDefault().getLineHeight() * 3 / 2));
+		}
+		
+		@Override
+		protected void assembleSelf(RenderTarget target) {
+			
+			int size = getPreferredSize().x;
+			int x = getX();
+			int y = getY() + (getHeight() - size) / 2;
+			
+			// Border
+			
+			Vec4 borderColor;
+			if (Checkbox.this.isPressed() || Checkbox.this.isHovered() || Checkbox.this.isFocused()) {
+				borderColor = Colors.BLUE;
+			} else {
+				borderColor = Colors.LIGHT_GRAY;
+			}
+			target.fill(x, y, size, size, borderColor);
+			
+			// Inside area
+			
+			if (Checkbox.this.isPressed()) {
+				// Do nothing
+			} else {
+				Vec4 backgroundColor;
+				if (Checkbox.this.isHovered() && Checkbox.this.isEnabled()) {
+					backgroundColor = Colors.HOVER_BLUE;
+				} else {
+					backgroundColor = Colors.WHITE;
+				}
+				target.fill(x + 2, y + 2, size - 4, size - 4, backgroundColor);
+			}
+			
+			// "Tick"
+			
+			if (Checkbox.this.isChecked()) {
+				target.fill(x + 4, y + 4, size - 8, size - 8, Colors.BLUE);
+			}
+		}
+
+	}
+
+	private boolean checked;
+
+	public Checkbox(String name, String label, Font labelFont, boolean check) {
+		super(name, label, labelFont);
+		this.checked = check;
+		
+		assert getChildren().size() == 1 : "Checkbox expects that BasicButton contains exactly one child";
+		Component basicChild = getChild(0);
+		
+		Group group = new Group(getName() + ".LabelAndTick", new LayoutHorizontal(0, 10));
+		removeChild(basicChild);
+		setLayout(new LayoutAlign(0, 0.5f, 10));
+		group.setLayoutHint(basicChild.getLayoutHint());
+		group.addChild(new Tick());
+		group.addChild(basicChild);
+		addChild(group);
+		
+		addAction(b -> switchState());
+	}
+	
+	public Checkbox(String name, String label, Font labelFont) {
+		this(name, label, labelFont, false);
+	}
+	
+	public Checkbox(String name, String label, boolean check) {
+		this(name, label, new Font(), check);
+	}
+	
+	public Checkbox(String name, String label) {
+		this(name, label, false);
+	}
+
+	public void switchState() {
+		setChecked(!isChecked());
+	}
+	
+	/**
+	 * @return the checked
+	 */
+	public boolean isChecked() {
+		return checked;
+	}
+	
+	/**
+	 * @param checked the checked to set
+	 */
+	public void setChecked(boolean checked) {
+		this.checked = checked;
+	}
+
+	@Override
+	protected void assembleSelf(RenderTarget target) {
+		// Change label font color
+		
+		if (isPressed()) {
+			getLabel().setFont(getLabel().getFont().withColor(Colors.BLUE));
+		} else {
+			getLabel().setFont(getLabel().getFont().withColor(Colors.BLACK));
+		}
+	}
+	
+	@Override
+	protected void postAssembleSelf(RenderTarget target) {
+		// Apply disable tint
+		
+		if (!isEnabled()) {
+			target.fill(getX(), getY(), getWidth(), getHeight(), Colors.toVector(0x88FFFFFF));
+		}
+	}
+	
+}

src/main/java/ru/windcorp/progressia/client/graphics/gui/Component.java

@@ -19,18 +19,23 @@
 package ru.windcorp.progressia.client.graphics.gui;
 
 import java.util.Collections;
+import java.util.EnumMap;
 import java.util.List;
+import java.util.Map;
+import java.util.Objects;
 import java.util.concurrent.CopyOnWriteArrayList;
 
 import org.lwjgl.glfw.GLFW;
 
 import com.google.common.eventbus.EventBus;
+import com.google.common.eventbus.Subscribe;
 
 import glm.vec._2.i.Vec2i;
 import ru.windcorp.progressia.client.graphics.backend.InputTracker;
 import ru.windcorp.progressia.client.graphics.flat.RenderTarget;
 import ru.windcorp.progressia.client.graphics.gui.event.ChildAddedEvent;
 import ru.windcorp.progressia.client.graphics.gui.event.ChildRemovedEvent;
+import ru.windcorp.progressia.client.graphics.gui.event.EnableEvent;
 import ru.windcorp.progressia.client.graphics.gui.event.FocusEvent;
 import ru.windcorp.progressia.client.graphics.gui.event.HoverEvent;
 import ru.windcorp.progressia.client.graphics.gui.event.ParentChangedEvent;
@@ -62,6 +67,8 @@ public class Component extends Named {
 	private Object layoutHint = null;
 	private Layout layout = null;
 	
+	private boolean isEnabled = true;
+
 	private boolean isFocusable = false;
 	private boolean isFocused = false;
 
@@ -285,10 +292,31 @@ public class Component extends Named {
 		return this;
 	}
 
+	/**
+	 * Checks whether this component is focusable. A component needs to be
+	 * focusable to become focused. A component that is focusable may not
+	 * necessarily be ready to gain focus (see {@link #canGainFocusNow()}).
+	 * 
+	 * @return {@code true} iff the component is focusable
+	 * @see #canGainFocusNow()
+	 */
 	public boolean isFocusable() {
 		return isFocusable;
 	}
 	
+	/**
+	 * Checks whether this component can become focused at this moment.
+	 * <p>
+	 * The implementation of this method in {@link Component} considers the
+	 * component a focus candidate if it is both focusable and enabled.
+	 * 
+	 * @return {@code true} iff the component can receive focus
+	 * @see #isFocusable()
+	 */
+	public boolean canGainFocusNow() {
+		return isFocusable() && isEnabled();
+	}
+
 	public Component setFocusable(boolean focusable) {
 		this.isFocusable = focusable;
 		return this;
@@ -337,7 +365,7 @@ public class Component extends Named {
 				return;
 			}
 
-			if (component.isFocusable()) {
+			if (component.canGainFocusNow()) {
 				setFocused(false);
 				component.setFocused(true);
 				return;
@@ -379,7 +407,7 @@ public class Component extends Named {
 				return;
 			}
 
-			if (component.isFocusable()) {
+			if (component.canGainFocusNow()) {
 				setFocused(false);
 				component.setFocused(true);
 				return;
@@ -433,12 +461,51 @@ public class Component extends Named {
 		return null;
 	}
 	
+	public boolean isEnabled() {
+		return isEnabled;
+	}
+	
+	/**
+	 * Enables or disables this component. An {@link EnableEvent} is dispatched
+	 * if the state changes.
+	 * 
+	 * @param enabled {@code true} to enable the component, {@code false} to
+	 *                disable the component
+	 * @see #setEnabledRecursively(boolean)
+	 */
+	public void setEnabled(boolean enabled) {
+		if (this.isEnabled != enabled) {
+			if (isFocused() && isEnabled()) {
+				focusNext();
+			}
+			
+			if (isEnabled()) {
+				setHovered(false);
+			}
+
+			this.isEnabled = enabled;
+			dispatchEvent(new EnableEvent(this));
+		}
+	}
+
+	/**
+	 * Enables or disables this component and all of its children recursively.
+	 * 
+	 * @param enabled {@code true} to enable the components, {@code false} to
+	 *                disable the components
+	 * @see #setEnabled(boolean)
+	 */
+	public void setEnabledRecursively(boolean enabled) {
+		setEnabled(enabled);
+		getChildren().forEach(c -> c.setEnabledRecursively(enabled));
+	}
+
 	public boolean isHovered() {
 		return isHovered;
 	}
 
 	protected void setHovered(boolean isHovered) {
-		if (this.isHovered != isHovered) {
+		if (this.isHovered != isHovered && isEnabled()) {
 			this.isHovered = isHovered;
 
 			if (!isHovered && !getChildren().isEmpty()) {
@@ -475,11 +542,8 @@ public class Component extends Named {
 		eventBus.post(event);
 	}
 
-	public <T extends InputEvent> void addListener(
-		Class<? extends T> type,
-		boolean handlesConsumed,
-		InputListener<T> listener
-	) {
+	public <T extends InputEvent> void addListener(Class<? extends T> type, boolean handlesConsumed,
+			InputListener<T> listener) {
 		if (inputBus == null) {
 			inputBus = new InputBus();
 		}
@@ -502,7 +566,7 @@ public class Component extends Named {
 	}
 
 	protected void handleInput(Input input) {
-		if (inputBus != null) {
+		if (inputBus != null && isEnabled()) {
 			inputBus.dispatch(input);
 		}
 	}
@@ -598,6 +662,17 @@ public class Component extends Named {
 		}
 	}
 
+	/**
+	 * Schedules the reassembly to occur.
+	 * <p>
+	 * This method is invoked in root components whenever a
+	 * {@linkplain #requestReassembly() reassembly request} is made by one of
+	 * its children. When creating the dedicated root component, override this
+	 * method to perform any implementation-specific actions that will cause a
+	 * reassembly as soon as possible.
+	 * <p>
+	 * The default implementation of this method does nothing.
+	 */
 	protected void handleReassemblyRequest() {
 		// To be overridden
 	}
@@ -638,6 +713,135 @@ public class Component extends Named {
 		getChildren().forEach(child -> child.assemble(target));
 	}
 	
+	/*
+	 * Automatic Reassembly
+	 */
+
+	/**
+	 * The various kinds of changes that may be used with
+	 * {@link Component#reassembleAt(ARTrigger...)}.
+	 */
+	protected static enum ARTrigger {
+		/**
+		 * Reassemble the component whenever its hover status changes, e.g.
+		 * whenever the pointer enters or leaves its bounds.
+		 */
+		HOVER,
+
+		/**
+		 * Reassemble the component whenever it gains or loses focus.
+		 * <p>
+		 * <em>Component must be focusable to be able to gain focus.</em> The
+		 * component will not be reassembled unless
+		 * {@link Component#setFocusable(boolean) setFocusable(true)} has been
+		 * invoked.
+		 */
+		FOCUS,
+
+		/**
+		 * Reassemble the component whenever it is enabled or disabled.
+		 */
+		ENABLE
+	}
+
+	/**
+	 * All trigger objects (event listeners) that are currently registered with
+	 * {@link #eventBus}. The field is {@code null} until the first trigger is
+	 * installed.
+	 */
+	private Map<ARTrigger, Object> autoReassemblyTriggerObjects = null;
+
+	private Object createTriggerObject(ARTrigger type) {
+		switch (type) {
+		case HOVER:
+			return new Object() {
+				@Subscribe
+				public void onHoverChanged(HoverEvent e) {
+					requestReassembly();
+				}
+			};
+		case FOCUS:
+			return new Object() {
+				@Subscribe
+				public void onFocusChanged(FocusEvent e) {
+					requestReassembly();
+				}
+			};
+		case ENABLE:
+			return new Object() {
+				@Subscribe
+				public void onEnabled(EnableEvent e) {
+					requestReassembly();
+				}
+			};
+		default:
+			throw new NullPointerException("type");
+		}
+	}
+
+	/**
+	 * Requests that {@link #requestReassembly()} is invoked on this component
+	 * whenever any of the specified changes occur. Duplicate attempts to
+	 * register the same trigger are silently ignored.
+	 * <p>
+	 * {@code triggers} may be empty, which results in a no-op. It must not be
+	 * {@code null}.
+	 * 
+	 * @param triggers the {@linkplain ARTrigger triggers} to
+	 *                 request reassembly with.
+	 * @see #disableAutoReassemblyAt(ARTrigger...)
+	 */
+	protected synchronized void reassembleAt(ARTrigger... triggers) {
+
+		Objects.requireNonNull(triggers, "triggers");
+		if (triggers.length == 0)
+			return;
+
+		if (autoReassemblyTriggerObjects == null) {
+			autoReassemblyTriggerObjects = new EnumMap<>(ARTrigger.class);
+		}
+
+		for (ARTrigger trigger : triggers) {
+			if (!autoReassemblyTriggerObjects.containsKey(trigger)) {
+				Object triggerObject = createTriggerObject(trigger);
+				addListener(trigger);
+				autoReassemblyTriggerObjects.put(trigger, triggerObject);
+			}
+		}
+
+	}
+
+	/**
+	 * Requests that {@link #requestReassembly()} is no longer invoked on this
+	 * component whenever any of the specified changes occur. After a trigger is
+	 * removed, it may be reinstalled with
+	 * {@link #reassembleAt(ARTrigger...)}. Attempts to remove a
+	 * nonexistant trigger are silently ignored.
+	 * <p>
+	 * {@code triggers} may be empty, which results in a no-op. It must not be
+	 * {@code null}.
+	 * 
+	 * @param triggers the {@linkplain ARTrigger triggers} to remove
+	 * @see #reassemblyAt(ARTrigger...)
+	 */
+	protected synchronized void disableAutoReassemblyAt(ARTrigger... triggers) {
+
+		Objects.requireNonNull(triggers, "triggers");
+		if (triggers.length == 0)
+			return;
+
+		if (autoReassemblyTriggerObjects == null)
+			return;
+
+		for (ARTrigger trigger : triggers) {
+			Object triggerObject = autoReassemblyTriggerObjects.remove(trigger);
+			if (triggerObject != null) {
+				removeListener(trigger);
+			}
+		}
+
+	}
+
 	// /**
 	// * Returns a component that displays this component in its center.
 	// * @return a {@link Aligner} initialized to center this component

src/main/java/ru/windcorp/progressia/client/graphics/gui/Group.java

@@ -16,18 +16,13 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
  
-package ru.windcorp.progressia.common.world.tile;
+package ru.windcorp.progressia.client.graphics.gui;
 
-public interface TileReference {
+public class Group extends Component {
 
-	TileData get();
-
-	int getIndex();
-
-	TileDataStack getStack();
-
-	default boolean isValid() {
-		return get() != null;
+	public Group(String name, Layout layout) {
+		super(name);
+		setLayout(layout);
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/graphics/gui/Label.java

@@ -83,6 +83,11 @@ public class Label extends Component {
 		return font;
 	}
 	
+	public void setFont(Font font) {
+		this.font = font;
+		requestReassembly();
+	}
+
 	public String getCurrentText() {
 		return currentText;
 	}
@@ -96,11 +101,7 @@ public class Label extends Component {
 		float startX = getX() + font.getAlign() * (getWidth() - currentSize.x);
 
 		target.pushTransform(
-			new Mat4().identity().translate(startX, getY(), -1000) // TODO wtf
-																	// is this
-																	// magic
-																	// <---
-				.scale(2)
+			new Mat4().identity().translate(startX, getY(), 0).scale(2)
 		);
 
 		target.addCustomRenderer(font.assemble(currentText, maxWidth));

src/main/java/ru/windcorp/progressia/client/graphics/gui/Panel.java

@@ -15,14 +15,66 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
- 
 package ru.windcorp.progressia.client.graphics.gui;
 
-public class Panel extends Component {
+import java.util.Objects;
+
+import glm.vec._4.Vec4;
+import ru.windcorp.progressia.client.graphics.Colors;
+import ru.windcorp.progressia.client.graphics.flat.RenderTarget;
+
+public class Panel extends Group {
+
+	private Vec4 fill;
+	private Vec4 border;
+
+	public Panel(String name, Layout layout, Vec4 fill, Vec4 border) {
+		super(name, layout);
+		
+		this.fill = Objects.requireNonNull(fill, "fill");
+		this.border = border;
+	}
 	
 	public Panel(String name, Layout layout) {
-		super(name);
-		setLayout(layout);
+		this(name, layout, Colors.WHITE, Colors.LIGHT_GRAY);
+	}
+	
+	/**
+	 * @return the fill
+	 */
+	public Vec4 getFill() {
+		return fill;
+	}
+	
+	/**
+	 * @param fill the fill to set
+	 */
+	public void setFill(Vec4 fill) {
+		this.fill = Objects.requireNonNull(fill, "fill");
+	}
+	
+	/**
+	 * @return the border
+	 */
+	public Vec4 getBorder() {
+		return border;
+	}
+	
+	/**
+	 * @param border the border to set
+	 */
+	public void setBorder(Vec4 border) {
+		this.border = border;
+	}
+	
+	@Override
+	protected void assembleSelf(RenderTarget target) {
+		if (border == null) {
+			target.fill(getX(), getY(), getWidth(), getHeight(), fill);
+		} else {
+			target.fill(getX(), getY(), getWidth(), getHeight(), border);
+			target.fill(getX() + 2, getY() + 2, getWidth() - 4, getHeight() - 4, fill);
+		}
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/graphics/gui/RadioButton.java

@@ -0,0 +1,205 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package ru.windcorp.progressia.client.graphics.gui;
+
+import org.lwjgl.glfw.GLFW;
+
+import glm.vec._2.i.Vec2i;
+import glm.vec._4.Vec4;
+import ru.windcorp.progressia.client.graphics.Colors;
+import ru.windcorp.progressia.client.graphics.flat.RenderTarget;
+import ru.windcorp.progressia.client.graphics.font.Font;
+import ru.windcorp.progressia.client.graphics.font.Typefaces;
+import ru.windcorp.progressia.client.graphics.gui.layout.LayoutAlign;
+import ru.windcorp.progressia.client.graphics.gui.layout.LayoutHorizontal;
+import ru.windcorp.progressia.client.graphics.input.KeyEvent;
+
+public class RadioButton extends BasicButton {
+	
+	private class Tick extends Component {
+
+		public Tick() {
+			super(RadioButton.this.getName() + ".Tick");
+			
+			setPreferredSize(new Vec2i(Typefaces.getDefault().getLineHeight() * 3 / 2));
+		}
+		
+		private void cross(RenderTarget target, int x, int y, int size, Vec4 color) {
+			target.fill(x + 4, y, size - 8, size, color);
+			target.fill(x + 2, y + 2, size - 4, size - 4, color);
+			target.fill(x, y + 4, size, size - 8, color);
+		}
+		
+		@Override
+		protected void assembleSelf(RenderTarget target) {
+			
+			int size = getPreferredSize().x;
+			int x = getX();
+			int y = getY() + (getHeight() - size) / 2;
+			
+			// Border
+			
+			Vec4 borderColor;
+			if (RadioButton.this.isPressed() || RadioButton.this.isHovered() || RadioButton.this.isFocused()) {
+				borderColor = Colors.BLUE;
+			} else {
+				borderColor = Colors.LIGHT_GRAY;
+			}
+			cross(target, x, y, size, borderColor);
+			
+			// Inside area
+			
+			if (RadioButton.this.isPressed()) {
+				// Do nothing
+			} else {
+				Vec4 backgroundColor;
+				if (RadioButton.this.isHovered() && RadioButton.this.isEnabled()) {
+					backgroundColor = Colors.HOVER_BLUE;
+				} else {
+					backgroundColor = Colors.WHITE;
+				}
+				cross(target, x + 2, y + 2, size - 4, backgroundColor);
+			}
+			
+			// "Tick"
+			
+			if (RadioButton.this.isChecked()) {
+				cross(target, x + 4, y + 4, size - 8, Colors.BLUE);
+			}
+		}
+
+	}
+
+	private boolean checked;
+	
+	private RadioButtonGroup group = null;
+
+	public RadioButton(String name, String label, Font labelFont, boolean check) {
+		super(name, label, labelFont);
+		this.checked = check;
+		
+		assert getChildren().size() == 1 : "RadioButton expects that BasicButton contains exactly one child";
+		Component basicChild = getChild(0);
+		
+		Group group = new Group(getName() + ".LabelAndTick", new LayoutHorizontal(0, 10));
+		removeChild(basicChild);
+		setLayout(new LayoutAlign(0, 0.5f, 10));
+		group.setLayoutHint(basicChild.getLayoutHint());
+		group.addChild(new Tick());
+		group.addChild(basicChild);
+		addChild(group);
+		
+		addListener(KeyEvent.class, e -> {
+			if (e.isRelease()) return false;
+			
+			if (e.getKey() == GLFW.GLFW_KEY_LEFT || e.getKey() == GLFW.GLFW_KEY_UP) {
+				if (this.group != null) {
+					this.group.selectPrevious();
+					this.group.getSelected().takeFocus();
+				}
+				
+				return true;
+			} else if (e.getKey() == GLFW.GLFW_KEY_RIGHT || e.getKey() == GLFW.GLFW_KEY_DOWN) {
+				if (this.group != null) {
+					this.group.selectNext();
+					this.group.getSelected().takeFocus();
+				}
+				return true;
+			}
+			
+			return false;
+		});
+		
+		addAction(b -> setChecked(true));
+	}
+	
+	public RadioButton(String name, String label, Font labelFont) {
+		this(name, label, labelFont, false);
+	}
+	
+	public RadioButton(String name, String label, boolean check) {
+		this(name, label, new Font(), check);
+	}
+	
+	public RadioButton(String name, String label) {
+		this(name, label, false);
+	}
+	
+	/**
+	 * @param group the group to set
+	 */
+	public RadioButton setGroup(RadioButtonGroup group) {
+		
+		if (this.group != null) {
+			group.selectNext();
+			removeAction(group.listener);
+			group.buttons.remove(this);
+			group.getSelected(); // Clear reference if this was the only button in the group
+		}
+		
+		this.group = group;
+		
+		if (this.group != null) {
+			group.buttons.add(this);
+			addAction(group.listener);
+		}
+		
+		setChecked(false);
+		
+		return this;
+	}
+	
+	/**
+	 * @return the checked
+	 */
+	public boolean isChecked() {
+		return checked;
+	}
+	
+	/**
+	 * @param checked the checked to set
+	 */
+	public void setChecked(boolean checked) {
+		this.checked = checked;
+		
+		if (group != null) {
+			group.listener.accept(this); // Failsafe for manual invocations of setChecked()
+		}
+	}
+
+	@Override
+	protected void assembleSelf(RenderTarget target) {
+		// Change label font color
+		
+		if (isPressed()) {
+			getLabel().setFont(getLabel().getFont().withColor(Colors.BLUE));
+		} else {
+			getLabel().setFont(getLabel().getFont().withColor(Colors.BLACK));
+		}
+	}
+	
+	@Override
+	protected void postAssembleSelf(RenderTarget target) {
+		// Apply disable tint
+		
+		if (!isEnabled()) {
+			target.fill(getX(), getY(), getWidth(), getHeight(), Colors.toVector(0x88FFFFFF));
+		}
+	}
+	
+}

src/main/java/ru/windcorp/progressia/client/graphics/gui/RadioButtonGroup.java

@@ -0,0 +1,119 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package ru.windcorp.progressia.client.graphics.gui;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+import java.util.function.Consumer;
+
+public class RadioButtonGroup {
+
+	private final Collection<Consumer<RadioButtonGroup>> actions = Collections.synchronizedCollection(new ArrayList<>());
+	final List<RadioButton> buttons = Collections.synchronizedList(new ArrayList<>());
+	
+	private RadioButton selected = null;
+	
+	Consumer<BasicButton> listener = b -> {
+		if (b instanceof RadioButton && ((RadioButton) b).isChecked() && buttons.contains(b)) {
+			select((RadioButton) b);
+		}
+	};
+	
+	public RadioButtonGroup addAction(Consumer<RadioButtonGroup> action) {
+		this.actions.add(Objects.requireNonNull(action, "action"));
+		return this;
+	}
+	
+	public boolean removeAction(Consumer<BasicButton> action) {
+		return this.actions.remove(action);
+	}
+	
+	public List<RadioButton> getButtons() {
+		return Collections.unmodifiableList(buttons);
+	}
+	
+	public synchronized RadioButton getSelected() {
+		if (!buttons.contains(selected)) {
+			selected = null;
+		}
+		return selected;
+	}
+	
+	public synchronized void select(RadioButton button) {
+		if (button != null && !buttons.contains(button)) {
+			throw new IllegalArgumentException("Button " + button + " is not in the group");
+		}
+		
+		getSelected(); // Clear if invalid
+		
+		if (selected == button) {
+			return; // Terminate listener-setter recursion
+		}
+		
+		if (selected != null) {
+			selected.setChecked(false);
+		}
+		
+		selected = button;
+		
+		if (selected != null) {
+			selected.setChecked(true);
+		}
+		
+		actions.forEach(action -> action.accept(this));
+	}
+	
+	public void selectNext() {
+		selectNeighbour(+1);
+	}
+	
+	public void selectPrevious() {
+		selectNeighbour(-1);
+	}
+	
+	private synchronized void selectNeighbour(int direction) {
+		if (getSelected() == null) {
+			if (buttons.isEmpty()) {
+				throw new IllegalStateException("Cannot select neighbour button: group empty");
+			}
+			
+			select(buttons.get(0));
+		} else {
+			RadioButton button;
+			int index = buttons.indexOf(selected);
+			
+			do {
+				index += direction;
+				
+				if (index >= buttons.size()) {
+					index = 0;
+				} else if (index < 0) {
+					index = buttons.size() - 1;
+				}
+				
+				button = buttons.get(index);
+			} while (button != getSelected() && !button.isEnabled());
+			
+			select(button);
+		}
+	}
+
+}

src/main/java/ru/windcorp/progressia/client/graphics/gui/event/ButtonEvent.java

@@ -0,0 +1,60 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package ru.windcorp.progressia.client.graphics.gui.event;
+
+import ru.windcorp.progressia.client.graphics.gui.BasicButton;
+
+public class ButtonEvent extends ComponentEvent {
+	
+	public static class Press extends ButtonEvent {
+		public Press(BasicButton button) {
+			super(button, true);
+		}
+	}
+	
+	public static class Release extends ButtonEvent {
+		public Release(BasicButton button) {
+			super(button, false);
+		}
+	}
+	
+	private final boolean isPress;
+
+	protected ButtonEvent(BasicButton button, boolean isPress) {
+		super(button);
+		this.isPress = isPress;
+	}
+	
+	public static ButtonEvent create(BasicButton button, boolean isPress) {
+		if (isPress) {
+			return new Press(button);
+		} else {
+			return new Release(button);
+		}
+	}
+
+	public boolean isPress() {
+		return isPress;
+	}
+
+	public boolean isRelease() {
+		return !isPress;
+	}
+	
+}

src/main/java/ru/windcorp/progressia/client/graphics/gui/event/EnableEvent.java

@@ -0,0 +1,11 @@
+package ru.windcorp.progressia.client.graphics.gui.event;
+
+import ru.windcorp.progressia.client.graphics.gui.Component;
+
+public class EnableEvent extends ComponentEvent {
+
+	public EnableEvent(Component component) {
+		super(component);
+	}
+	
+}

src/main/java/ru/windcorp/progressia/client/graphics/gui/layout/LayoutAlign.java

@@ -56,13 +56,8 @@ public class LayoutAlign implements Layout {
 			size.x = min(size.x, cWidth);
 			size.y = min(size.y, cHeight);
 
-			child.setBounds(
-				c.getX() +
-					(int) ((cWidth - size.x) * alignX) + margin,
-				c.getY() +
-					(int) ((cHeight - size.y) * alignY) + margin,
-				size
-			);
+			child.setBounds(c.getX() + (int) ((cWidth - size.x) * alignX) + margin,
+					c.getY() + (int) ((cHeight - size.y) * alignY) + margin, size);
 
 		});
 	}
@@ -71,9 +66,7 @@ public class LayoutAlign implements Layout {
 	public Vec2i calculatePreferredSize(Component c) {
 		Vec2i result = new Vec2i(0, 0);
 
-		c.getChildren().stream()
-			.map(child -> child.getPreferredSize())
-			.forEach(size -> {
+		c.getChildren().stream().map(child -> child.getPreferredSize()).forEach(size -> {
 			result.x = max(size.x, result.x);
 			result.y = max(size.y, result.y);
 		});

src/main/java/ru/windcorp/progressia/client/graphics/gui/layout/LayoutBorderHorizontal.java

@@ -26,9 +26,7 @@ import ru.windcorp.progressia.client.graphics.gui.Layout;
 
 public class LayoutBorderHorizontal implements Layout {
 
-	public static final String CENTER = "Center",
-		LEFT = "Left",
-		RIGHT = "Right";
+	public static final String CENTER = "Center", LEFT = "Left", RIGHT = "Right";
 
 	private final int margin;
 
@@ -51,32 +49,17 @@ public class LayoutBorderHorizontal implements Layout {
 				if (child.getLayoutHint() == LEFT) {
 					childSize = child.getPreferredSize();
 					left = childSize.x + margin;
-					child.setBounds(
-						c.getX(),
-						c.getY(),
-						childSize.x,
-						c.getHeight()
-					);
+					child.setBounds(c.getX(), c.getY(), childSize.x, c.getHeight());
 				} else if (child.getLayoutHint() == RIGHT) {
 					childSize = child.getPreferredSize();
 					right = childSize.x + margin;
-					child.setBounds(
-						c.getX() + c.getWidth() - childSize.x,
-						c.getY(),
-						childSize.x,
-						c.getHeight()
-					);
+					child.setBounds(c.getX() + c.getWidth() - childSize.x, c.getY(), childSize.x, c.getHeight());
 				}
 			}
 
 			for (Component child : c.getChildren()) {
 				if (child.getLayoutHint() == CENTER) {
-					child.setBounds(
-						c.getX() + left,
-						c.getY(),
-						c.getWidth() - left - right,
-						c.getHeight()
-					);
+					child.setBounds(c.getX() + left, c.getY(), c.getWidth() - left - right, c.getHeight());
 
 				}
 			}

src/main/java/ru/windcorp/progressia/client/graphics/gui/layout/LayoutBorderVertical.java

@@ -26,9 +26,7 @@ import ru.windcorp.progressia.client.graphics.gui.Layout;
 
 public class LayoutBorderVertical implements Layout {
 
-	public static final String CENTER = "Center",
-		UP = "Up",
-		DOWN = "Down";
+	public static final String CENTER = "Center", UP = "Up", DOWN = "Down";
 
 	private final int margin;
 
@@ -51,32 +49,17 @@ public class LayoutBorderVertical implements Layout {
 				if (child.getLayoutHint() == UP) {
 					childSize = child.getPreferredSize();
 					top = childSize.y + margin;
-					child.setBounds(
-						c.getX(),
-						c.getY(),
-						c.getWidth(),
-						childSize.y
-					);
+					child.setBounds(c.getX(), c.getY(), c.getWidth(), childSize.y);
 				} else if (child.getLayoutHint() == DOWN) {
 					childSize = child.getPreferredSize();
 					bottom = childSize.y + margin;
-					child.setBounds(
-						c.getX(),
-						c.getY() + c.getHeight() - childSize.y,
-						c.getWidth(),
-						childSize.y
-					);
+					child.setBounds(c.getX(), c.getY() + c.getHeight() - childSize.y, c.getWidth(), childSize.y);
 				}
 			}
 
 			for (Component child : c.getChildren()) {
 				if (child.getLayoutHint() == CENTER) {
-					child.setBounds(
-						c.getX(),
-						c.getY() + top,
-						c.getWidth(),
-						c.getHeight() - top - bottom
-					);
+					child.setBounds(c.getX(), c.getY() + top, c.getWidth(), c.getHeight() - top - bottom);
 
 				}
 			}

src/main/java/ru/windcorp/progressia/client/graphics/gui/layout/LayoutFill.java

@@ -0,0 +1,78 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+ 
+package ru.windcorp.progressia.client.graphics.gui.layout;
+
+import static java.lang.Math.max;
+
+import glm.vec._2.i.Vec2i;
+import ru.windcorp.progressia.client.graphics.gui.Component;
+import ru.windcorp.progressia.client.graphics.gui.Layout;
+
+public class LayoutFill implements Layout {
+
+	private final int margin;
+	
+	public LayoutFill(int margin) {
+		this.margin = margin;
+	}
+
+	public LayoutFill() {
+		this(0);
+	}
+
+	@Override
+	public void layout(Component c) {
+		c.getChildren().forEach(child -> {
+
+			int cWidth = c.getWidth() - 2 * margin;
+			int cHeight = c.getHeight() - 2 * margin;
+
+			child.setBounds(
+				c.getX() + margin,
+				c.getY() + margin,
+				cWidth,
+				cHeight
+			);
+
+		});
+	}
+
+	@Override
+	public Vec2i calculatePreferredSize(Component c) {
+		Vec2i result = new Vec2i(0, 0);
+
+		c.getChildren().stream()
+			.map(child -> child.getPreferredSize())
+			.forEach(size -> {
+				result.x = max(size.x, result.x);
+				result.y = max(size.y, result.y);
+			});
+
+		result.x += 2 * margin;
+		result.y += 2 * margin;
+
+		return result;
+	}
+
+	@Override
+	public String toString() {
+		return getClass().getSimpleName() + "(" + margin + ")";
+	}
+
+}

src/main/java/ru/windcorp/progressia/client/graphics/gui/layout/LayoutGrid.java

@@ -98,15 +98,26 @@ public class LayoutGrid implements Layout {
 			if (!isSummed)
 				throw new IllegalStateException("Not summed yet");
 			
+			int width, height;
+			
+			if (column == columns.length - 1) {
+				width = parent.getWidth() - margin - columns[column];
+			} else {
+				width = columns[column + 1] - columns[column] - gap;
+			}
+			
+			if (row == rows.length - 1) {
+				height = parent.getHeight() - margin - rows[row];
+			} else {
+				height = rows[row + 1] - rows[row] - gap;
+			}
+
 			child.setBounds(
 				parent.getX() + columns[column],
-				parent.getY() + rows[row],
+				parent.getY() + parent.getHeight() - (rows[row] + height),
 
-				(column != (columns.length - 1) ? (columns[column + 1] - columns[column] - gap)
-					: (parent.getWidth() - margin - columns[column])),
-
-				(row != (rows.length - 1) ? (rows[row + 1] - rows[row] - gap)
-					: (parent.getHeight() - margin - rows[row]))
+				width,
+				height
 			);
 		}
 	}
@@ -132,10 +143,9 @@ public class LayoutGrid implements Layout {
 			GridDimensions grid = calculateGrid(c);
 			grid.sum();
 
-			int[] coords;
 			for (Component child : c.getChildren()) {
-				coords = (int[]) child.getLayoutHint();
-				grid.setBounds(coords[0], coords[1], child, c);
+				Vec2i coords = (Vec2i) child.getLayoutHint();
+				grid.setBounds(coords.x, coords.y, child, c);
 			}
 		}
 	}
@@ -149,11 +159,10 @@ public class LayoutGrid implements Layout {
 
 	private GridDimensions calculateGrid(Component parent) {
 		GridDimensions result = new GridDimensions();
-		int[] coords;
 
 		for (Component child : parent.getChildren()) {
-			coords = (int[]) child.getLayoutHint();
-			result.add(coords[0], coords[1], child.getPreferredSize());
+			Vec2i coords = (Vec2i) child.getLayoutHint();
+			result.add(coords.x, coords.y, child.getPreferredSize());
 		}
 
 		return result;

src/main/java/ru/windcorp/progressia/client/graphics/gui/layout/LayoutHorizontal.java

@@ -43,8 +43,7 @@ public class LayoutHorizontal implements Layout {
 
 	@Override
 	public void layout(Component c) {
-		int x = c.getX() + margin,
-			y = c.getY() + margin;
+		int x = c.getX() + margin, y = c.getY() + margin;
 
 		int width;
 

src/main/java/ru/windcorp/progressia/client/graphics/gui/layout/LayoutVertical.java

@@ -43,8 +43,7 @@ public class LayoutVertical implements Layout {
 
 	@Override
 	public void layout(Component c) {
-		int x = c.getX() + margin,
-			y = c.getY() + c.getHeight();
+		int x = c.getX() + margin, y = c.getY() + c.getHeight();
 
 		synchronized (c.getChildren()) {
 			for (Component child : c.getChildren()) {

src/main/java/ru/windcorp/progressia/client/graphics/gui/menu/MenuLayer.java

@@ -0,0 +1,117 @@
+/*
+ * Progressia
+ * Copyright (C)  2020-2021  Wind Corporation and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package ru.windcorp.progressia.client.graphics.gui.menu;
+
+import org.lwjgl.glfw.GLFW;
+
+import glm.vec._2.i.Vec2i;
+import ru.windcorp.progressia.client.graphics.Colors;
+import ru.windcorp.progressia.client.graphics.GUI;
+import ru.windcorp.progressia.client.graphics.font.Font;
+import ru.windcorp.progressia.client.graphics.gui.Component;
+import ru.windcorp.progressia.client.graphics.gui.GUILayer;
+import ru.windcorp.progressia.client.graphics.gui.Label;
+import ru.windcorp.progressia.client.graphics.gui.Layout;
+import ru.windcorp.progressia.client.graphics.gui.Panel;
+import ru.windcorp.progressia.client.graphics.gui.layout.LayoutAlign;
+import ru.windcorp.progressia.client.graphics.gui.layout.LayoutFill;
+import ru.windcorp.progressia.client.graphics.gui.layout.LayoutVertical;
+import ru.windcorp.progressia.client.graphics.input.InputEvent;
+import ru.windcorp.progressia.client.graphics.input.KeyEvent;
+import ru.windcorp.progressia.client.graphics.input.bus.Input;
+import ru.windcorp.progressia.client.localization.MutableString;
+import ru.windcorp.progressia.client.localization.MutableStringLocalized;
+
+public class MenuLayer extends GUILayer {
+
+	private final Component content;
+	private final Component background;
+	
+	private final Runnable closeAction = () -> {
+		GUI.removeLayer(this);
+	};
+	
+	public MenuLayer(String name, Component content) {
+		super(name, new LayoutFill(0));
+		
+		setCursorPolicy(CursorPolicy.REQUIRE);
+		
+		this.background = new Panel(name + ".Background", new LayoutAlign(10), Colors.toVector(0x66000000), null);
+		this.content = content;
+		
+		background.addChild(content);
+		getRoot().addChild(background);
+	}
+	
+	public MenuLayer(String name, Layout contentLayout) {
+		this(name, new Panel(name + ".Content", contentLayout));
+	}
+	
+	public MenuLayer(String name) {
+		this(name, new LayoutVertical(20, 10));
+	}
+	
+	public Component getContent() {
+		return content;
+	}
+	
+	public Component getBackground() {
+		return background;
+	}
+	
+	protected void addTitle() {
+		String translationKey = "Layer" + getName() + ".Title";
+		MutableString titleText = new MutableStringLocalized(translationKey);
+		Font titleFont = new Font().deriveBold().withColor(Colors.BLACK).withAlign(0.5f);
+		
+		Label label = new Label(getName() + ".Title", titleFont, titleText);
+		getContent().addChild(label);
+		
+		Panel panel = new Panel(getName() + ".Title.Underscore", null, Colors.BLUE, null);
+		panel.setLayout(new LayoutFill() {
+			@Override
+			public Vec2i calculatePreferredSize(Component c) {
+				return new Vec2i(label.getPreferredSize().x + 40, 4);
+			}
+		});
+		getContent().addChild(panel);
+	}
+	
+	protected Runnable getCloseAction() {
+		return closeAction;
+	}
+	
+	@Override
+	protected void handleInput(Input input) {
+		
+		if (!input.isConsumed()) {
+			InputEvent event = input.getEvent();
+			
+			if (event instanceof KeyEvent) {
+				KeyEvent keyEvent = (KeyEvent) event;
+				if (keyEvent.isPress() && keyEvent.getKey() == GLFW.GLFW_KEY_ESCAPE) {
+					getCloseAction().run();
+				}
+			}
+		}
+		
+		super.handleInput(input);
+		input.consume();
+	}
+	
+}

src/main/java/ru/windcorp/progressia/client/graphics/input/CursorMoveEvent.java

@@ -87,22 +87,14 @@ public class CursorMoveEvent extends CursorEvent {
 
 	@Override
 	public CursorMoveEvent snapshot() {
-		return new StaticMouseMoveEvent(
-			getPreviousPosition(),
-			getNewPosition(),
-			getTime()
-		);
+		return new StaticMouseMoveEvent(getPreviousPosition(), getNewPosition(), getTime());
 	}
 
 	private class StaticMouseMoveEvent extends CursorMoveEvent {
 
 		private final Vec2d previousPosition = new Vec2d();
 
-		public StaticMouseMoveEvent(
-			Vec2d previousPosition,
-			Vec2d newPosition,
-			double time
-		) {
+		public StaticMouseMoveEvent(Vec2d previousPosition, Vec2d newPosition, double time) {
 			super(newPosition, time);
 			this.previousPosition.set(previousPosition.x, previousPosition.y);
 		}

src/main/java/ru/windcorp/progressia/client/graphics/input/FrameResizeEvent.java

@@ -67,11 +67,7 @@ public class FrameResizeEvent extends InputEvent {
 
 		private final Vec2i previousSize;
 
-		public StaticFrameResizeEvent(
-			Vec2i newSize,
-			Vec2i previousSize,
-			double time
-		) {
+		public StaticFrameResizeEvent(Vec2i newSize, Vec2i previousSize, double time) {
 			super(newSize, time);
 			this.previousSize = previousSize;
 		}

src/main/java/ru/windcorp/progressia/client/graphics/input/KeyEvent.java

@@ -27,13 +27,7 @@ public class KeyEvent extends InputEvent {
 	protected int action;
 	protected int mods;
 
-	protected KeyEvent(
-		int key,
-		int scancode,
-		int action,
-		int mods,
-		double time
-	) {
+	protected KeyEvent(int key, int scancode, int action, int mods, double time) {
 		super(time);
 		this.key = key;
 		this.scancode = scancode;

src/main/java/ru/windcorp/progressia/client/graphics/input/Keys.java

@@ -46,17 +46,12 @@ public class Keys {
 	private static final String MOUSE_BUTTON_PREFIX = "GLFW_MOUSE_BUTTON_";
 
 	private static final Set<String> IGNORE_FIELDS = new HashSet<>(
-		Arrays.asList(
-			"GLFW_KEY_UNKNOWN",
-			"GLFW_KEY_LAST",
-			"GLFW_MOUSE_BUTTON_LAST",
-			"GLFW_MOUSE_BUTTON_1", // Alias
+			Arrays.asList("GLFW_KEY_UNKNOWN", "GLFW_KEY_LAST", "GLFW_MOUSE_BUTTON_LAST", "GLFW_MOUSE_BUTTON_1", // Alias
 																												// for
 																												// LEFT
 					"GLFW_MOUSE_BUTTON_2", // Alias for RIGHT
 					"GLFW_MOUSE_BUTTON_3" // Alias for MIDDLE
-		)
-	);
+			));
 
 	static {
 		initializeDictionary();
@@ -100,14 +95,8 @@ public class Keys {
 		}
 
 		if (CODES_TO_NAMES.containsKey(value)) {
-			throw CrashReports.report(
-				null,
-				"Duplicate keys: %s and %s both map to %d(0x%s)",
-				CODES_TO_NAMES.get(value),
-				name,
-				value,
-				Integer.toHexString(value)
-			);
+			throw CrashReports.report(null, "Duplicate keys: %s and %s both map to %d(0x%s)", CODES_TO_NAMES.get(value),
+					name, value, Integer.toHexString(value));
 		}
 
 		CODES_TO_NAMES.put(value, name);

src/main/java/ru/windcorp/progressia/client/graphics/input/bus/InputBus.java

@@ -31,28 +31,21 @@ public class InputBus {
 		private final boolean handleConsumed;
 		private final InputListener<?> listener;
 
-		public WrappedListener(
-			Class<?> type,
-			boolean handleConsumed,
-			InputListener<?> listener
-		) {
+		public WrappedListener(Class<?> type, boolean handleConsumed, InputListener<?> listener) {
 			this.type = type;
 			this.handleConsumed = handleConsumed;
 			this.listener = listener;
 		}
 
 		private boolean handles(Input input) {
-			return (!input.isConsumed() || handleConsumed) &&
-				type.isInstance(input.getEvent());
+			return (!input.isConsumed() || handleConsumed) && type.isInstance(input.getEvent());
 		}
 
 		@SuppressWarnings("unchecked")
 		public void handle(Input input) {
 			if (handles(input)) {
 				boolean consumed = ((InputListener<InputEvent>) listener)
-					.handle(
-						(InputEvent) type.cast(input.getEvent())
-					);
+						.handle((InputEvent) type.cast(input.getEvent()));
 
 				input.setConsumed(consumed);
 			}
@@ -66,18 +59,12 @@ public class InputBus {
 		listeners.forEach(l -> l.handle(input));
 	}
 
-	public <T extends InputEvent> void register(
-		Class<? extends T> type,
-		boolean handlesConsumed,
-		InputListener<T> listener
-	) {
+	public <T extends InputEvent> void register(Class<? extends T> type, boolean handlesConsumed,
+			InputListener<T> listener) {
 		listeners.add(new WrappedListener(type, handlesConsumed, listener));
 	}
 
-	public <T extends InputEvent> void register(
-		Class<? extends T> type,
-		InputListener<T> listener
-	) {
+	public <T extends InputEvent> void register(Class<? extends T> type, InputListener<T> listener) {
 		register(type, false, listener);
 	}
 

src/main/java/ru/windcorp/progressia/client/graphics/model/BlockFaceVectors.java

@@ -18,23 +18,23 @@
  
 package ru.windcorp.progressia.client.graphics.model;
 
-import static ru.windcorp.progressia.common.world.block.BlockFace.*;
+import static ru.windcorp.progressia.common.world.rels.AbsFace.*;
 
 import com.google.common.collect.ImmutableMap;
 
 import glm.vec._3.Vec3;
-import ru.windcorp.progressia.common.world.block.BlockFace;
+import ru.windcorp.progressia.common.world.rels.AbsFace;
 
 class BlockFaceVectors {
 
 	private static BlockFaceVectors createInner(BlockFaceVectors outer) {
-		ImmutableMap.Builder<BlockFace, Vec3> originBuilder = ImmutableMap.builder();
+		ImmutableMap.Builder<AbsFace, Vec3> originBuilder = ImmutableMap.builder();
 
-		ImmutableMap.Builder<BlockFace, Vec3> widthBuilder = ImmutableMap.builder();
+		ImmutableMap.Builder<AbsFace, Vec3> widthBuilder = ImmutableMap.builder();
 
-		ImmutableMap.Builder<BlockFace, Vec3> heightBuilder = ImmutableMap.builder();
+		ImmutableMap.Builder<AbsFace, Vec3> heightBuilder = ImmutableMap.builder();
 
-		for (BlockFace face : getFaces()) {
+		for (AbsFace face : getFaces()) {
 			Vec3 width = outer.getWidth(face);
 			Vec3 height = outer.getHeight(face);
 
@@ -59,36 +59,36 @@ class BlockFaceVectors {
 
 	static {
 		OUTER = new BlockFaceVectors(
-			ImmutableMap.<BlockFace, Vec3>builder()
+			ImmutableMap.<AbsFace, Vec3>builder()
 
-				.put(TOP, new Vec3(-0.5f, +0.5f, +0.5f))
-				.put(BOTTOM, new Vec3(-0.5f, -0.5f, -0.5f))
-				.put(NORTH, new Vec3(+0.5f, -0.5f, -0.5f))
-				.put(SOUTH, new Vec3(-0.5f, +0.5f, -0.5f))
-				.put(WEST, new Vec3(+0.5f, +0.5f, -0.5f))
-				.put(EAST, new Vec3(-0.5f, -0.5f, -0.5f))
+				.put(POS_Z, new Vec3(-0.5f, +0.5f, +0.5f))
+				.put(NEG_Z, new Vec3(-0.5f, -0.5f, -0.5f))
+				.put(POS_X, new Vec3(+0.5f, -0.5f, -0.5f))
+				.put(NEG_X, new Vec3(-0.5f, +0.5f, -0.5f))
+				.put(POS_Y, new Vec3(+0.5f, +0.5f, -0.5f))
+				.put(NEG_Y, new Vec3(-0.5f, -0.5f, -0.5f))
 
 				.build(),
 
-			ImmutableMap.<BlockFace, Vec3>builder()
+			ImmutableMap.<AbsFace, Vec3>builder()
 
-				.put(TOP, new Vec3(0, -1, 0))
-				.put(BOTTOM, new Vec3(0, +1, 0))
-				.put(NORTH, new Vec3(0, +1, 0))
-				.put(SOUTH, new Vec3(0, -1, 0))
-				.put(WEST, new Vec3(-1, 0, 0))
-				.put(EAST, new Vec3(+1, 0, 0))
+				.put(POS_Z, new Vec3(0, -1, 0))
+				.put(NEG_Z, new Vec3(0, +1, 0))
+				.put(POS_X, new Vec3(0, +1, 0))
+				.put(NEG_X, new Vec3(0, -1, 0))
+				.put(POS_Y, new Vec3(-1, 0, 0))
+				.put(NEG_Y, new Vec3(+1, 0, 0))
 
 				.build(),
 
-			ImmutableMap.<BlockFace, Vec3>builder()
+			ImmutableMap.<AbsFace, Vec3>builder()
 
-				.put(TOP, new Vec3(+1, 0, 0))
-				.put(BOTTOM, new Vec3(+1, 0, 0))
-				.put(NORTH, new Vec3(0, 0, +1))
-				.put(SOUTH, new Vec3(0, 0, +1))
-				.put(WEST, new Vec3(0, 0, +1))
-				.put(EAST, new Vec3(0, 0, +1))
+				.put(POS_Z, new Vec3(+1, 0, 0))
+				.put(NEG_Z, new Vec3(+1, 0, 0))
+				.put(POS_X, new Vec3(0, 0, +1))
+				.put(NEG_X, new Vec3(0, 0, +1))
+				.put(POS_Y, new Vec3(0, 0, +1))
+				.put(NEG_Y, new Vec3(0, 0, +1))
 
 				.build()
 		);
@@ -100,29 +100,29 @@ class BlockFaceVectors {
 		return inner ? INNER : OUTER;
 	}
 
-	private final ImmutableMap<BlockFace, Vec3> origins;
-	private final ImmutableMap<BlockFace, Vec3> widths;
-	private final ImmutableMap<BlockFace, Vec3> heights;
+	private final ImmutableMap<AbsFace, Vec3> origins;
+	private final ImmutableMap<AbsFace, Vec3> widths;
+	private final ImmutableMap<AbsFace, Vec3> heights;
 
 	public BlockFaceVectors(
-		ImmutableMap<BlockFace, Vec3> origins,
-		ImmutableMap<BlockFace, Vec3> widths,
-		ImmutableMap<BlockFace, Vec3> heights
+		ImmutableMap<AbsFace, Vec3> origins,
+		ImmutableMap<AbsFace, Vec3> widths,
+		ImmutableMap<AbsFace, Vec3> heights
 	) {
 		this.origins = origins;
 		this.widths = widths;
 		this.heights = heights;
 	}
 
-	public Vec3 getOrigin(BlockFace face) {
+	public Vec3 getOrigin(AbsFace face) {
 		return origins.get(face);
 	}
 
-	public Vec3 getWidth(BlockFace face) {
+	public Vec3 getWidth(AbsFace face) {
 		return widths.get(face);
 	}
 
-	public Vec3 getHeight(BlockFace face) {
+	public Vec3 getHeight(AbsFace face) {
 		return heights.get(face);
 	}
 }

src/main/java/ru/windcorp/progressia/client/graphics/model/DynamicModel.java

@@ -33,22 +33,14 @@ public abstract class DynamicModel extends Model {
 	private final Mat4[] transforms;
 	private final boolean[] dynamics;
 
-	public DynamicModel(
-		Renderable[] parts,
-		Mat4[] transforms,
-		boolean[] dynamic
-	) {
+	public DynamicModel(Renderable[] parts, Mat4[] transforms, boolean[] dynamic) {
 		super(parts);
 		this.transforms = transforms;
 		this.dynamics = dynamic;
 	}
 
 	public DynamicModel(Builder builder) {
-		this(
-			builder.getParts(),
-			builder.getTransforms(),
-			builder.getDynamics()
-		);
+		this(builder.getParts(), builder.getTransforms(), builder.getDynamics());
 	}
 
 	@Override
@@ -78,11 +70,7 @@ public abstract class DynamicModel extends Model {
 		protected Builder() {
 		}
 
-		private Builder addPart(
-			Renderable part,
-			Mat4 transform,
-			boolean isDynamic
-		) {
+		private Builder addPart(Renderable part, Mat4 transform, boolean isDynamic) {
 			parts.add(Objects.requireNonNull(part, "part"));
 			transforms.add(Objects.requireNonNull(transform, "transform"));
 			dynamics.add(isDynamic);
@@ -90,22 +78,15 @@ public abstract class DynamicModel extends Model {
 			return this;
 		}
 
-		public Builder addStaticPart(
-			Renderable part,
-			Mat4 transform
-		) {
+		public Builder addStaticPart(Renderable part, Mat4 transform) {
 			return addPart(part, new Mat4(transform), false);
 		}
 
-		public Builder addDynamicPart(
-			Renderable part
-		) {
+		public Builder addDynamicPart(Renderable part) {
 			return addPart(part, new Mat4(), true);
 		}
 
-		public Builder addStaticPart(
-			Renderable part
-		) {
+		public Builder addStaticPart(Renderable part) {
 			return addStaticPart(part, IDENTITY);
 		}
 

src/main/java/ru/windcorp/progressia/client/graphics/model/LambdaModel.java

@@ -37,23 +37,13 @@ public class LambdaModel extends DynamicModel {
 
 	private final TransformGetter[] getters;
 
-	public LambdaModel(
-		Renderable[] parts,
-		Mat4[] transforms,
-		boolean[] dynamic,
-		TransformGetter[] getters
-	) {
+	public LambdaModel(Renderable[] parts, Mat4[] transforms, boolean[] dynamic, TransformGetter[] getters) {
 		super(parts, transforms, dynamic);
 		this.getters = getters;
 	}
 
 	public LambdaModel(Builder builder) {
-		this(
-			builder.getParts(),
-			builder.getTransforms(),
-			builder.getDynamics(),
-			builder.getGetters()
-		);
+		this(builder.getParts(), builder.getTransforms(), builder.getDynamics(), builder.getGetters());
 	}
 
 	@Override
@@ -75,11 +65,7 @@ public class LambdaModel extends DynamicModel {
 		protected Builder() {
 		}
 
-		private Builder addPart(
-			Renderable part,
-			Mat4 transform,
-			TransformGetter getter
-		) {
+		private Builder addPart(Renderable part, Mat4 transform, TransformGetter getter) {
 			parts.add(Objects.requireNonNull(part, "part"));
 			transforms.add(Objects.requireNonNull(transform, "transform"));
 			dynamics.add(getter != null);
@@ -88,23 +74,15 @@ public class LambdaModel extends DynamicModel {
 			return this;
 		}
 
-		public Builder addStaticPart(
-			Renderable part,
-			Mat4 transform
-		) {
+		public Builder addStaticPart(Renderable part, Mat4 transform) {
 			return addPart(part, new Mat4(transform), null);
 		}
 
-		public Builder addDynamicPart(
-			Renderable part,
-			TransformGetter getter
-		) {
+		public Builder addDynamicPart(Renderable part, TransformGetter getter) {
 			return addPart(part, new Mat4(), getter);
 		}
 
-		public Builder addStaticPart(
-			Renderable part
-		) {
+		public Builder addStaticPart(Renderable part) {
 			return addStaticPart(part, IDENTITY);
 		}
 
@@ -127,12 +105,8 @@ public class LambdaModel extends DynamicModel {
 	}
 
 	public static LambdaModel animate(Renderable model, TransformGetter transform) {
-		return new LambdaModel(
-			new Renderable[] { model },
-			new Mat4[] { new Mat4() },
-			new boolean[] { true },
-			new TransformGetter[] { transform }
-		);
+		return new LambdaModel(new Renderable[] { model }, new Mat4[] { new Mat4() }, new boolean[] { true },
+				new TransformGetter[] { transform });
 	}
 
 }

src/main/java/ru/windcorp/progressia/client/graphics/model/Shape.java

@@ -30,10 +30,10 @@ import ru.windcorp.progressia.client.graphics.backend.VertexBufferObject;
 public class Shape implements Renderable {
 
 	private final ShapeRenderProgram program;
-	private final Face[] faces;
+	private final ShapePart[] parts;
 	private final Usage usage;
 
-	private FaceGroup[] groups;
+	private ShapePartGroup[] groups;
 
 	private ByteBuffer vertices;
 	private ShortBuffer indices;
@@ -45,33 +45,33 @@ public class Shape implements Renderable {
 	private VertexBufferObject verticesVbo;
 	private VertexBufferObject indicesVbo;
 
-	public Shape(Usage usage, ShapeRenderProgram program, Face... faces) {
+	public Shape(Usage usage, ShapeRenderProgram program, ShapePart... parts) {
 		this.program = program;
-		this.faces = faces;
+		this.parts = parts;
 		this.usage = usage;
 
-		configureFaces();
+		configureParts();
 		program.preprocess(this);
 
 		assembleBuffers();
 	}
 
-	private void configureFaces() {
-		for (Face face : faces) {
-			face.setShape(this);
+	private void configureParts() {
+		for (ShapePart part : parts) {
+			part.setShape(this);
 		}
 	}
 
 	private void assembleBuffers() {
 		// TODO optimize: only update faces that requested it
 
-		sortFaces();
+		sortParts();
 		resizeBuffers();
 
-		for (Face face : faces) {
-			assembleVertices(face);
-			assembleIndices(face);
-			face.resetUpdateFlags();
+		for (ShapePart part : parts) {
+			assembleVertices(part);
+			assembleIndices(part);
+			part.resetUpdateFlags();
 		}
 
 		this.vertices.flip();
@@ -85,110 +85,110 @@ public class Shape implements Renderable {
 
 	private void resizeBuffers() {
 		int verticesRequired = 0, indicesRequired = 0;
-		for (Face face : faces) {
-			verticesRequired += face.getVertices().remaining();
-			indicesRequired += face.getIndices().remaining();
+		for (ShapePart part : parts) {
+			verticesRequired += part.getVertices().remaining();
+			indicesRequired += part.getIndices().remaining();
 		}
 
-		if (this.vertices == null || vertices.capacity() < verticesRequired) {
+		if (vertices == null || vertices.capacity() < verticesRequired) {
 			this.vertices = BufferUtils.createByteBuffer(verticesRequired);
 		} else {
-			this.vertices.position(0).limit(verticesRequired);
+			vertices.position(0).limit(verticesRequired);
 		}
 
-		if (this.indices == null || this.indices.capacity() < indicesRequired) {
+		if (indices == null || indices.capacity() < indicesRequired) {
 			this.indices = BufferUtils.createShortBuffer(indicesRequired);
 		} else {
-			this.indices.position(0).limit(indicesRequired);
+			indices.position(0).limit(indicesRequired);
 		}
 	}
 
-	private void assembleVertices(Face face) {
-		face.locationOfVertices = this.vertices.position();
+	private void assembleVertices(ShapePart part) {
+		part.locationOfVertices = this.vertices.position();
 
-		insertVertices(face);
-		linkVerticesWith(face);
+		insertVertices(part);
+		linkVerticesWith(part);
 	}
 
-	private void insertVertices(Face face) {
-		ByteBuffer faceVertices = face.getVertices();
+	private void insertVertices(ShapePart part) {
+		ByteBuffer partVertices = part.getVertices();
 
-		faceVertices.mark();
-		this.vertices.put(faceVertices);
-		faceVertices.reset();
+		partVertices.mark();
+		this.vertices.put(partVertices);
+		partVertices.reset();
 	}
 
-	private void linkVerticesWith(Face face) {
+	private void linkVerticesWith(ShapePart part) {
 		int limit = vertices.limit();
 		int position = vertices.position();
 
-		vertices.limit(position).position(face.getLocationOfVertices());
-		face.vertices = vertices.slice();
+		vertices.limit(position).position(part.getLocationOfVertices());
+		part.vertices = vertices.slice();
 
 		vertices.position(position).limit(limit);
 	}
 
-	private void assembleIndices(Face face) {
-		short vertexOffset = (short) (face.getLocationOfVertices() / program.getBytesPerVertex());
+	private void assembleIndices(ShapePart part) {
+		short vertexOffset = (short) (part.getLocationOfVertices() / program.getBytesPerVertex());
 
-		face.locationOfIndices = indices.position();
+		part.locationOfIndices = indices.position();
 
-		ShortBuffer faceIndices = face.getIndices();
+		ShortBuffer partIndices = part.getIndices();
 
-		if (faceIndices == null) {
-			for (int i = 0; i < face.getVertexCount(); ++i) {
+		if (partIndices == null) {
+			for (int i = 0; i < part.getVertexCount(); ++i) {
 				this.indices.put((short) (vertexOffset + i));
 			}
 		} else {
-			for (int i = faceIndices.position(); i < faceIndices.limit(); ++i) {
-				short faceIndex = faceIndices.get(i);
-				faceIndex += vertexOffset;
-				this.indices.put(faceIndex);
+			for (int i = partIndices.position(); i < partIndices.limit(); ++i) {
+				short partIndex = partIndices.get(i);
+				partIndex += vertexOffset;
+				this.indices.put(partIndex);
 			}
 		}
 	}
 
-	private void sortFaces() {
-		Arrays.sort(faces);
+	private void sortParts() {
+		Arrays.sort(parts);
 	}
 
 	private void assembleGroups() {
-		int unique = countUniqueFaces();
-		this.groups = new FaceGroup[unique];
+		int unique = countUniqueParts();
+		this.groups = new ShapePartGroup[unique];
 
-		if (faces.length == 0)
+		if (parts.length == 0)
 			return;
 
-		int previousHandle = faces[0].getSortingIndex();
+		int previousHandle = parts[0].getSortingIndex();
 		int start = 0;
 		int groupIndex = 0;
 
-		for (int i = 1; i < faces.length; ++i) {
-			if (previousHandle != faces[i].getSortingIndex()) {
+		for (int i = 1; i < parts.length; ++i) {
+			if (previousHandle != parts[i].getSortingIndex()) {
 
-				groups[groupIndex] = new FaceGroup(faces, start, i);
+				groups[groupIndex] = new ShapePartGroup(parts, start, i);
 				start = i;
 				groupIndex++;
 
-				previousHandle = faces[i].getSortingIndex();
+				previousHandle = parts[i].getSortingIndex();
 			}
 		}
 
 		assert groupIndex == groups.length - 1;
-		groups[groupIndex] = new FaceGroup(faces, start, faces.length);
+		groups[groupIndex] = new ShapePartGroup(parts, start, parts.length);
 	}
 
-	private int countUniqueFaces() {
-		if (faces.length == 0)
+	private int countUniqueParts() {
+		if (parts.length == 0)
 			return 0;
 
 		int result = 1;
-		int previousHandle = faces[0].getSortingIndex();
+		int previousHandle = parts[0].getSortingIndex();
 
-		for (int i = 1; i < faces.length; ++i) {
-			if (previousHandle != faces[i].getSortingIndex()) {
+		for (int i = 1; i < parts.length; ++i) {
+			if (previousHandle != parts[i].getSortingIndex()) {
 				result++;
-				previousHandle = faces[i].getSortingIndex();
+				previousHandle = parts[i].getSortingIndex();
 			}
 		}
 
@@ -238,11 +238,11 @@ public class Shape implements Renderable {
 		return program;
 	}
 
-	public Face[] getFaces() {
-		return faces;
+	public ShapePart[] getParts() {
+		return parts;
 	}
 
-	public FaceGroup[] getGroups() {
+	public ShapePartGroup[] getGroups() {
 		return groups;
 	}
 

src/main/java/ru/windcorp/progressia/client/graphics/model/ShapePart.java

@@ -24,7 +24,7 @@ import java.util.Objects;
 
 import ru.windcorp.progressia.client.graphics.texture.Texture;
 
-public class Face implements Comparable<Face> {
+public class ShapePart implements Comparable<ShapePart> {
 
 	private static final ShortBuffer GENERATE_SUCCESSIVE_LATER = null;
 
@@ -40,7 +40,7 @@ public class Face implements Comparable<Face> {
 	private ShortBuffer userIndices;
 	private boolean userIndicesUpdated = true;
 
-	public Face(
+	public ShapePart(
 		Texture texture,
 		ByteBuffer vertices,
 		ShortBuffer indices
@@ -50,7 +50,7 @@ public class Face implements Comparable<Face> {
 		setIndices(indices);
 	}
 
-	public Face(
+	public ShapePart(
 		Texture texture,
 		ByteBuffer vertices
 	) {
@@ -155,7 +155,7 @@ public class Face implements Comparable<Face> {
 		return vertices;
 	}
 
-	public Face setVertices(ByteBuffer vertices) {
+	public ShapePart setVertices(ByteBuffer vertices) {
 		this.vertices = Objects.requireNonNull(vertices, "vertices");
 		markForVertexUpdate();
 		return this;
@@ -202,7 +202,7 @@ public class Face implements Comparable<Face> {
 		return userIndices.remaining();
 	}
 
-	public Face setIndices(ShortBuffer indices) {
+	public ShapePart setIndices(ShortBuffer indices) {
 		if (indices == null) {
 			indices = GENERATE_SUCCESSIVE_LATER;
 		}
@@ -245,7 +245,7 @@ public class Face implements Comparable<Face> {
 	}
 
 	@Override
-	public int compareTo(Face o) {
+	public int compareTo(ShapePart o) {
 		return Integer.compare(getSortingIndex(), o.getSortingIndex());
 	}
 

src/main/java/ru/windcorp/progressia/client/graphics/model/ShapePartGroup.java

@@ -21,13 +21,13 @@ package ru.windcorp.progressia.client.graphics.model;
 import ru.windcorp.progressia.client.graphics.texture.Texture;
 import ru.windcorp.progressia.client.graphics.texture.TexturePrimitive;
 
-public class FaceGroup {
+public class ShapePartGroup {
 
 	private final TexturePrimitive texture;
 	private final int indexCount;
 	private final int byteOffsetOfIndices;
 
-	FaceGroup(Face[] faces, int start, int end) {
+	ShapePartGroup(ShapePart[] faces, int start, int end) {
 
 		Texture t = faces[start].getTexture();
 		this.texture = t == null ? null : t.getSprite().getPrimitive();
@@ -36,10 +36,9 @@ public class FaceGroup {
 		int indexCount = 0;
 
 		for (int i = start; i < end; ++i) {
-			Face face = faces[i];
+			ShapePart face = faces[i];
 
-			assert this.texture == null
-				? (face.getTexture() == null)
+			assert this.texture == null ? (face.getTexture() == null)
 					: (face.getTexture().getSprite().getPrimitive() == this.texture);
 
 			indexCount += face.getIndexCount();

src/main/java/ru/windcorp/progressia/client/graphics/model/ShapeParts.java

@@ -25,14 +25,14 @@ import glm.vec._3.Vec3;
 import glm.vec._4.Vec4;
 import ru.windcorp.progressia.client.graphics.model.ShapeRenderProgram.VertexBuilder;
 import ru.windcorp.progressia.client.graphics.texture.Texture;
-import ru.windcorp.progressia.common.world.block.BlockFace;
+import ru.windcorp.progressia.common.world.rels.AbsFace;
 
-public class Faces {
+public class ShapeParts {
 
-	private Faces() {
+	private ShapeParts() {
 	}
 
-	public static Face createRectangle(
+	public static ShapePart createRectangle(
 		ShapeRenderProgram program,
 		Texture texture,
 		Vec4 colorMultiplier,
@@ -82,19 +82,19 @@ public class Faces {
 				}
 			);
 
-		return new Face(
+		return new ShapePart(
 			texture,
 			builder.assemble(),
 			buffer
 		);
 	}
 
-	public static Face createBlockFace(
+	public static ShapePart createBlockFace(
 		ShapeRenderProgram program,
 		Texture texture,
 		Vec4 colorMultiplier,
 		Vec3 blockCenter,
-		BlockFace face,
+		AbsFace face,
 		boolean inner
 	) {
 		BlockFaceVectors vectors = BlockFaceVectors.get(inner);

src/main/java/ru/windcorp/progressia/client/graphics/model/ShapeRenderHelper.java

@@ -28,15 +28,10 @@ public class ShapeRenderHelper {
 	protected static final int TRANSFORM_STACK_SIZE = 64;
 	protected static final int COLOR_MULTIPLIER_STACK_SIZE = TRANSFORM_STACK_SIZE;
 
-	protected final StashingStack<Mat4> transformStack = new StashingStack<>(
-		TRANSFORM_STACK_SIZE,
-		Mat4::new
-	);
+	protected final StashingStack<Mat4> transformStack = new StashingStack<>(TRANSFORM_STACK_SIZE, Mat4::new);
 
-	protected final StashingStack<Vec4> colorMultiplierStack = new StashingStack<>(
-		COLOR_MULTIPLIER_STACK_SIZE,
-		Vec4::new
-	);
+	protected final StashingStack<Vec4> colorMultiplierStack = new StashingStack<>(COLOR_MULTIPLIER_STACK_SIZE,
+			Vec4::new);
 
 	{
 		transformStack.push().identity();