Added the ability to sprint

When you double-tap the W key, the character starts moving faster

src/main/java/ru/windcorp/progressia/test/LayerTestGUI.java

@@ -65,6 +65,11 @@ public class LayerTestGUI extends GUILayer {
 				() -> String.format("Flying:         %5s (Space bar x2)", TestPlayerControls.getInstance().isFlying())
 		));
 
+		panel.addChild(new Label(
+				"IsSprintDisplay", font,
+				() -> String.format("Sprint:         %5s (W x2)", TestPlayerControls.getInstance().isSprint())
+		));
+
 		panel.addChild(new Label(
 				"IsMouseCapturedDisplay", font,
 				() -> String.format("Mouse captured: %5s (esc)", TestPlayerControls.getInstance().isMouseCaptured())

src/main/java/ru/windcorp/progressia/test/TestPlayerControls.java

@@ -1,11 +1,10 @@
 package ru.windcorp.progressia.test;
 
-import org.lwjgl.glfw.GLFW;
-
 import glm.Glm;
 import glm.mat._3.Mat3;
 import glm.vec._2.Vec2;
 import glm.vec._3.Vec3;
+import org.lwjgl.glfw.GLFW;
 import ru.windcorp.progressia.client.ClientState;
 import ru.windcorp.progressia.client.graphics.backend.GraphicsBackend;
 import ru.windcorp.progressia.client.graphics.backend.GraphicsInterface;
@@ -31,9 +30,11 @@ public class TestPlayerControls {
         return INSTANCE;
     }
 
-	private TestPlayerControls() {}
+    private TestPlayerControls() {
+    }
 
     private static final double MODE_SWITCH_MAX_DELAY = 300 * Units.MILLISECONDS;
+    private static final double MODE_SPRINT_SWITCH_MAX_DELAY = 100 * Units.MILLISECONDS;
     private static final double MIN_JUMP_DELAY = 300 * Units.MILLISECONDS;
 
     // Horizontal and vertical max control speed when flying
@@ -45,6 +46,9 @@ public class TestPlayerControls {
     // Horizontal and vertical max control speed when walking
     private static final float WALKING_SPEED = 4.0f * Units.METERS_PER_SECOND;
 
+    // Horizontal and vertical max control speed when run
+    private static final float RUN_SPEED = 6.0f * Units.METERS_PER_SECOND;
+
     // (0; 1], 1 is instant change, 0 is no control authority
     private static final float WALKING_CONTROL_AUTHORITY = Units.get("15 1/s");
 
@@ -52,12 +56,14 @@ public class TestPlayerControls {
     private static final float JUMP_VELOCITY = 5f * Units.METERS_PER_SECOND;
 
     private boolean isFlying = true;
+    private boolean isSprint = false;
 
     private int movementForward = 0;
     private int movementRight = 0;
     private int movementUp = 0;
 
     private double lastSpacePress = Double.NEGATIVE_INFINITY;
+    private double lastSprintPress = Double.NEGATIVE_INFINITY;
 
     private boolean captureMouse = true;
     private boolean useMinecraftGravity = false;
@@ -80,6 +86,9 @@ public class TestPlayerControls {
         if (isFlying) {
             speed = FLYING_SPEED;
             authority = FLYING_CONTROL_AUTHORITY;
+        } else if (isSprint) {
+            speed = RUN_SPEED;
+            authority = WALKING_CONTROL_AUTHORITY;
         } else {
             speed = WALKING_SPEED;
             authority = WALKING_CONTROL_AUTHORITY;
@@ -132,12 +141,11 @@ public class TestPlayerControls {
 
     private boolean onKeyEvent(KeyEvent event) {
         if (event.isRepeat()) return false;
-		
         int multiplier = event.isPress() ? 1 : -1;
-		
         switch (event.getKey()) {
             case GLFW.GLFW_KEY_W:
                 movementForward += +1 * multiplier;
+                handleSprint(event);
                 break;
             case GLFW.GLFW_KEY_S:
                 movementForward += -1 * multiplier;
@@ -154,7 +162,6 @@ public class TestPlayerControls {
             case GLFW.GLFW_KEY_LEFT_SHIFT:
                 handleShift(multiplier);
                 break;
-			
             case GLFW.GLFW_KEY_ESCAPE:
                 if (!event.isPress()) return false;
                 handleEscape();
@@ -188,6 +195,7 @@ public class TestPlayerControls {
         double timeSinceLastSpacePress = GraphicsInterface.getTime() - lastSpacePress;
 
         if (isPressed && timeSinceLastSpacePress < MODE_SWITCH_MAX_DELAY) {
+            isSprint = false;
             isFlying = !isFlying;
             updateGUI();
             movementUp = +1;
@@ -204,6 +212,23 @@ public class TestPlayerControls {
         lastSpacePress = GraphicsInterface.getTime();
     }
 
+    private void handleSprint(KeyEvent event) {
+
+        double timeSinceLastSpacePress = GraphicsInterface.getTime() - lastSprintPress;
+
+        if (event.isPress() && timeSinceLastSpacePress < MODE_SPRINT_SWITCH_MAX_DELAY && !isFlying) {
+            isSprint = !isSprint;
+            updateGUI();
+        }
+
+        lastSprintPress = GraphicsInterface.getTime();
+
+        if (isSprint && event.isRelease()) {
+            isSprint = false;
+            updateGUI();
+        }
+    }
+
     private void jump() {
         if (ClientState.getInstance() == null || !ClientState.getInstance().isReady()) {
             return;
@@ -334,6 +359,10 @@ public class TestPlayerControls {
         return isFlying;
     }
 
+    public boolean isSprint() {
+        return isSprint;
+    }
+
     public boolean isMouseCaptured() {
         return captureMouse;
     }