Fixed The main flicker problem

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();
+	}
+}