Fixed The main flicker problem

src/ei/engine/LWJGLGameWindow.java

@@ -64,24 +64,9 @@ public class LWJGLGameWindow {
 		this.fps = fps;
 		this.title = title;
 
-		MultiPrintStream.makeInstance(new MultiPrintStream("log.txt"));
+		DisplayMode dm = new DisplayMode(width, height);
+		createWindow(dm, fullscreen); 
 
-	    try {
-			DisplayMode dm = new DisplayMode(width, height);
-			Display.setDisplayMode(dm); 
-			
-			Display.setTitle(title);
-			Display.setFullscreen(fullscreen);
-	    	
-	    	initOpenGl();
-	    	run();
-	    } catch (Exception e) {
-	    	e.printStackTrace(System.err);
-	    	Sys.alert(title, "An error occured and the game will exit.");
-	    } finally {
-	    	cleanup();
-	    }
-	    System.exit(0);
 	}
 
 	public void createWindow(DisplayMode dm, boolean fullscreen){
@@ -94,6 +79,10 @@ public class LWJGLGameWindow {
 			
 			Display.setTitle(title);
 			Display.setFullscreen(fullscreen);
+			//Display.setVSyncEnabled(true);
+			
+			// Create the display window
+			Display.create();
 
 	    	initOpenGl();
 	    	run();
@@ -114,17 +103,12 @@ public class LWJGLGameWindow {
 		// grab the mouse, dont want that hideous cursor when we're playing!
 		Mouse.setGrabbed(false);
 
-		// Create the display window
-		Display.create();
-
 		// enable textures since we're going to use these for our sprites
 		GL11.glEnable(GL11.GL_TEXTURE_2D);
         // Enable Smooth Shading
 		GL11.glShadeModel(GL11.GL_SMOOTH);        
 		// disable the OpenGL depth test since we're rendering 2D graphics
 		GL11.glDisable(GL11.GL_DEPTH_TEST);
-		//GL11.glEnable(GL11.GL_DEPTH_TEST); // Enables Depth Testing
-		//GL11.glDepthFunc(GL11.GL_LEQUAL); // The Type Of Depth Testing To Do
 		// disable lights (we do not nead them)
 		GL11.glDisable(GL11.GL_LIGHTING);   
         // Black Background
@@ -168,9 +152,6 @@ public class LWJGLGameWindow {
 		int frame = 0;
 		while (!exit) {
 			timer.startTimer();
-			// Always call Window.update(), all the time - it does some behind the
-			// scenes work, and also displays the rendered output
-			Display.update();
 
 			// Check for close requests
 			if (Display.isCloseRequested()) {

src/ei/engine/test/EngineTest.java

@@ -0,0 +1,38 @@
+package ei.engine.test;
+
+import ei.engine.LWJGLGameWindow;
+import ei.engine.math.Vector2f;
+import ei.engine.scene.Box;
+
+public class EngineTest extends LWJGLGameWindow{
+	private Box box;
+	private float pos;
+
+	public static void main(String[] args){
+		new EngineTest();
+	}
+	
+	public EngineTest() {
+		super("EngineTest");
+	}
+
+	protected void init(){
+		box = new Box("lol");
+		box.setSize(new Vector2f(100,100));
+		pos = 0;
+	}
+	
+	protected void update() {
+		super.update();
+		pos += 0.2f;
+		box.setLocation(new Vector2f(200+pos,200+pos));
+		box.update();
+	}
+	
+	/**
+	 * this method shid be overriden
+	 */
+	protected void render(){
+		box.render();
+	}
+}

src/ei/engine/test/GameStateTestState.java

@@ -25,7 +25,7 @@ public class GameStateTestState extends GameState{
 	public void init() {
 		rootNode = new Node("InGameNode");
 		
-		sprite1 = new Sprite("tank","data/units/tank.png");
+		sprite1 = new Sprite("tank","data/units/tank/tank0000.png");
 		//sprite1.setScale(new Vector2f(0.5f,0.5f));
 		sprite1.setLocation(new Vector3f(400,300,0.2f));
 		rootNode.add(sprite1);
@@ -43,7 +43,7 @@ public class GameStateTestState extends GameState{
 		p.getLocation().setZ(0.1f);
 		rootNode.add(p);
 		
-		sound1 = new Sound("sound","data/sounds/center.wav");
+		sound1 = new Sound("sound","data/sounds/ei.ogg");
 		sound1.loop();
 		sound1.setLocation(sprite1.getLocation());
 		rootNode.add(sound1);

src/ei/game/EI.java

@@ -16,7 +16,7 @@ public class EI extends LWJGLGameWindow{
 	}
 
 	public EI() {
-		super("EI",60,LWJGLPropertiesDialog.SOW_ALWAYS);
+		super("EI",60,LWJGLPropertiesDialog.SOW_ONCE);
 	}
 	
 	protected void init(){