GameThread

package me.vedi0boy.anaglyph;

import android.graphics.Canvas;
import android.util.Log;
import android.view.SurfaceHolder;

public class MainThread extends Thread{

	private static final String TAG = MainThread.class.getSimpleName();
	private SurfaceHolder holder;
	private Anaglyph gamePanel;

	private final static int MAX_FPS = 50;
	private final static int MAX_FRAME_SKIPS = 5;
	private final static int FRAME_PERIOD = 1000 / MAX_FPS;

	public MainThread(SurfaceHolder holder, Anaglyph gamePanel){
		super();
		this.holder = holder;
		this.gamePanel = gamePanel;

	}

	public static boolean running = false;
	public void setRunning(boolean running){
		this.running = running;
	}

	public void run(){
		Canvas canvas;
		long beginTime;
		long timeDiff;
		int sleepTime;
		int framesSkipped;
		sleepTime = 0;
		Log.d(TAG, "Starting Game Loop");
		while(running){
			canvas = null;
			Log.d(TAG,"Game loop running!");
			try{
				canvas = this.holder.lockCanvas();
				synchronized (holder){
					beginTime = System.currentTimeMillis();
					framesSkipped = 0;
					if(canvas != null){
						this.gamePanel.update();
						this.gamePanel.render(canvas);
					}
					timeDiff = System.currentTimeMillis()- beginTime;
					sleepTime = (int)(FRAME_PERIOD - timeDiff);
					if(sleepTime > 0){
						try{
							Thread.sleep(sleepTime);
						}catch(InterruptedException e){}
						}
					}
					while(sleepTime < 0 && framesSkipped < MAX_FRAME_SKIPS){
						if(canvas != null){
							this.gamePanel.update();
						}
						sleepTime += FRAME_PERIOD;
						framesSkipped++;
					}
				} finally{

				if(canvas != null){
					holder.unlockCanvasAndPost(canvas);
				}

			}
		}
	}
}