Android Open Source - AndroidGameDev Android Fast Render View

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Back to project page AndroidGameDev.

License

The source code is released under:

Apache License

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Java Source Code

package cc.rafazz.framework.implementation;
//w w w.  j  a v  a2 s  .  com
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class AndroidFastRenderView extends SurfaceView implements Runnable {
  AndroidGame game;
  Bitmap framebuffer;
  Thread renderThread = null;
  SurfaceHolder holder;
  volatile boolean running = false;

  public AndroidFastRenderView(AndroidGame game, Bitmap framebuffer) {
    super(game);
    this.game = game;
    this.framebuffer = framebuffer;
    this.holder = getHolder();
  }

  public void resume() {
    running = true;
    renderThread = new Thread(this);
    renderThread.start();
  }

  public void run() {
    Rect dstRect = new Rect();
    long startTime = System.nanoTime();
    while (running) {
      if (!holder.getSurface().isValid())
        continue;

      float deltaTime = (System.nanoTime() - startTime) / 10000000.000f;
      startTime = System.nanoTime();

      if (deltaTime > 3.15) {
        deltaTime = (float) 3.15;
      }

      game.getCurrentScreen().update(deltaTime);
      game.getCurrentScreen().paint(deltaTime);

      Canvas canvas = holder.lockCanvas();
      canvas.getClipBounds(dstRect);
      canvas.drawBitmap(framebuffer, null, dstRect, null);
      holder.unlockCanvasAndPost(canvas);

    }
  }

  public void pause() {
    running = false;
    while (true) {
      try {
        renderThread.join();
        break;
      } catch (InterruptedException e) {
        // retry
      }
    }
  }

}

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