reimplemented frame limiter

core/src/com/mygdx/game/Game.java

@@ -6,6 +6,7 @@ import com.badlogic.gdx.Input;
 import com.badlogic.gdx.graphics.GL20;
 import com.badlogic.gdx.graphics.g2d.BitmapFont;
 import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
+import java.util.ConcurrentModificationException;
 import logic.Element;
 import logic.World;
 
@@ -25,6 +26,10 @@ public class Game extends ApplicationAdapter {
         shaper = new ShapeRenderer();
         shaper.setAutoShapeType(true);
         font = new BitmapFont();
+        Thread worldThread = new Thread(world);
+        worldThread.setName("Worker");
+        worldThread.setPriority(Thread.MAX_PRIORITY);
+        worldThread.start();
     }
 
     @Override
@@ -54,15 +59,19 @@ public class Game extends ApplicationAdapter {
         if (Gdx.input.isKeyJustPressed(Input.Keys.P)) {
             paused = !paused;
         }
-        // Update
+        if (Gdx.input.isKeyJustPressed(Input.Keys.L)) {
-        if (!paused) {
+            if (world.getFpsLimit() == 60) {
-            world.update();
+                world.setFpsLimit(0);
+            } else {
+                world.setFpsLimit(60);
+            }
         }
         // Draw
         Gdx.gl.glClearColor(0, 0, 0, 1);
         Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
         shaper.setColor(1, 1, 1, 1);
         shaper.begin(ShapeRenderer.ShapeType.Line);
+        try {
             for (Element e : world.getElements()) {
                 try {
                     e.render(shaper);
@@ -71,6 +80,8 @@ public class Game extends ApplicationAdapter {
                     //Log.log(Log.ERROR, ex+"");
                 }
             }
+        } catch (ConcurrentModificationException ex) {
+        }
         shaper.setColor(0.3f, 0.3f, 0.3f, 1);
         // draw borders
         shaper.rect(0, 0, world.getWidth(), world.getHeight());
@@ -84,4 +95,8 @@ public class Game extends ApplicationAdapter {
     public static Game get() {
         return game;
     }
+
+    public boolean isPaused() {
+        return paused;
+    }
 }

core/src/logic/Creature.java

@@ -33,6 +33,7 @@ public class Creature extends Element {
         fov = (float) Math.PI / 2.5f;
         fitness = 0;
         brain = new Brain(10, 5, 2, 10);
+        sights = new Sight[2];
     }
 
     @Override
@@ -146,18 +147,18 @@ public class Creature extends Element {
         double relX = Math.cos(dir), relY = Math.sin(dir);
         float c = 0;
         float eyeX = (float) (relX * getSize() * 0.6f), eyeY = (float) (relY * getSize() * 0.6f);
-        for (int i = 0; i < sights.length; i++) {
+        for (Sight sight : sights) {
-            if (sights[i] != null) {
+            if (sight != null) {
-                c = sights[i].getDistance() / sightRange * 2 + sightRange;
+                c = sight.getDistance() / sightRange * 2 + sightRange;
             } else {
             }
-            if (sights[i] != null) {
+            if (sight != null) {
-                if (sights[i].getElement() instanceof Creature) {
+                if (sight.getElement() instanceof Creature) {
                     s.setColor(c, 0, 0, 1);
-                } else if (sights[i].getElement() instanceof Vegetable) {
+                } else if (sight.getElement() instanceof Vegetable) {
                     s.setColor(0, c, 0, 1);
                 }
-                s.line(eyeX + getX(), getY() + eyeY, sights[i].getElement().getX(), sights[i].getElement().getY());
+                s.line(eyeX + getX(), getY() + eyeY, sight.getElement().getX(), sight.getElement().getY());
             }
         }
         if (sights[0] == null && sights[1] == null) {

core/src/logic/World.java

@@ -5,9 +5,11 @@
  */
 package logic;
 
+import com.mygdx.game.Game;
 import com.mygdx.game.Log;
 import java.util.ArrayList;
 import java.util.Comparator;
+import java.util.Date;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -15,10 +17,11 @@ import java.util.logging.Logger;
  *
  * @author fazo
  */
-public class World {
+public class World implements Runnable {
 
     private final int width, height, nPlants, creatPerGen;
     private int generation = 1;
+    private float fpsLimit = 60;
     public ArrayList<Element> elements;
     public ArrayList<Element> toAdd;
     public ArrayList<Creature> creatures;
@@ -40,6 +43,36 @@ public class World {
         newGen(true);
     }
 
+    @Override
+    public void run() {
+        Date d;
+        long time;
+        float target;
+        for (;;) {
+            if (!Game.get().isPaused()) {
+                d = new Date();
+                update();
+                if (fpsLimit > 0) {
+                    time = new Date().getTime() - d.getTime();
+                    target = 1000 / fpsLimit;
+                    if (time < target) {
+                        try {
+                            Thread.sleep((long) (target - time));
+                        } catch (InterruptedException ex) {
+                            Logger.getLogger(World.class.getName()).log(Level.SEVERE, null, ex);
+                        }
+                    }
+                }
+            } else {
+                try {
+                    Thread.sleep(100);
+                } catch (InterruptedException ex) {
+                    Logger.getLogger(World.class.getName()).log(Level.SEVERE, null, ex);
+                }
+            }
+        }
+    }
+
     public void update() {
         for (Element e : toAdd) {
             elements.add(e);
@@ -206,4 +239,12 @@ public class World {
         return plants;
     }
 
+    public float getFpsLimit() {
+        return fpsLimit;
+    }
+
+    public void setFpsLimit(float fpsLimit) {
+        this.fpsLimit = fpsLimit;
+    }
+
 }

desktop/src/com/mygdx/game/desktop/DesktopLauncher.java

@@ -12,9 +12,6 @@ public class DesktopLauncher {
         config.height = 600;
         config.width = 800;
         config.resizable = false;
-        config.vSyncEnabled = false; // Setting to false disables vertical sync
-        config.foregroundFPS = 60; // Setting to 0 disables foreground fps throttling
-        config.backgroundFPS = 0; // Setting to 0 disables background fps throttling
         new LwjglApplication(new Game(), config);
     }
 }