Fixed RotatingServerContext

- RotatingServerContext now rotates coordinates, too
- Fixed a bug caused by the implementation of push methods by
TransformingServerContext
- Fixed unbounded recursion in WorldGenericRO.hasTile(Vec3i, BlockFace,
int)

src/main/java/ru/windcorp/progressia/common/world/generic/WorldGenericRO.java

@@ -137,7 +137,8 @@ public interface WorldGenericRO<
 	 * @return {@code true} iff the tile exists
 	 */
 	default boolean hasTile(Vec3i location, BlockFace face, int layer) {
-		return hasTile(location, face, layer);
+		TS stack = getTilesOrNull(location, face);
+		return stack != null && stack.size() > layer;
 	}
 
 	default boolean isChunkLoaded(Vec3i chunkPos) {

src/main/java/ru/windcorp/progressia/server/world/context/impl/RotatingServerContext.java

@@ -19,6 +19,7 @@ package ru.windcorp.progressia.server.world.context.impl;
 
 import glm.vec._3.i.Vec3i;
 import ru.windcorp.progressia.common.world.rels.AbsFace;
+import ru.windcorp.progressia.common.world.rels.AxisRotations;
 import ru.windcorp.progressia.common.world.rels.RelFace;
 import ru.windcorp.progressia.server.world.context.ServerTileContext;
 
@@ -31,14 +32,18 @@ public class RotatingServerContext extends TransformingServerContext {
 		this.up = up;
 	}
 	
+	public AbsFace getUp() {
+		return up;
+	}
+
 	@Override
 	protected void transform(Vec3i userLocation, Vec3i output) {
-		output.set(userLocation.x, userLocation.y, userLocation.z);
+		AxisRotations.resolve(userLocation, up, output);
 	}
 
 	@Override
 	protected void untransform(Vec3i parentLocation, Vec3i output) {
-		output.set(parentLocation.x, parentLocation.y, parentLocation.z);
+		AxisRotations.relativize(parentLocation, up, output);
 	}
 
 	@Override

src/main/java/ru/windcorp/progressia/server/world/context/impl/TransformingServerContext.java

@@ -35,7 +35,7 @@ public abstract class TransformingServerContext extends FilterServerContext {
 	private final Vec3i location = new Vec3i();
 	private boolean isLocationValid = false;
 
-	private RelFace face;
+	private RelFace face = null;
 
 	private final List<Vec3i> vectorCache = new ArrayList<>(1);
 
@@ -107,28 +107,40 @@ public abstract class TransformingServerContext extends FilterServerContext {
 
 	@Override
 	public ServerBlockContext push(Vec3i userLocation) {
-		transform(userLocation, location);
+		Vec3i parentLocation = grabVector(userLocation);
+		super.push(parentLocation);
+		releaseVector(parentLocation);
+		
+		location.set(userLocation.x, userLocation.y, userLocation.z);
 		isLocationValid = true;
-		super.push(location);
 		face = null;
+		
 		return this;
 	}
 
 	@Override
 	public ServerTileStackContext push(Vec3i userLocation, RelFace userFace) {
-		transform(userLocation, location);
+		Vec3i parentLocation = grabVector(userLocation);
+		super.push(parentLocation, transform(userFace));
+		releaseVector(parentLocation);
+		
+		location.set(userLocation.x, userLocation.y, userLocation.z);
 		isLocationValid = true;
-		face = transform(userFace);
+		face = userFace;
-		super.push(location, face);
+		
 		return this;
 	}
 
 	@Override
 	public ServerTileContext push(Vec3i userLocation, RelFace userFace, int layer) {
-		transform(userLocation, location);
+		Vec3i parentLocation = grabVector(userLocation);
+		super.push(parentLocation, transform(userFace), layer);
+		releaseVector(parentLocation);
+		
+		location.set(userLocation.x, userLocation.y, userLocation.z);
 		isLocationValid = true;
-		face = transform(userFace);
+		face = userFace;
-		super.push(location, face, layer);
+		
 		return this;
 	}