Android Open Source - Marble-Run Bumper

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Back to project page Marble-Run.

License

The source code is released under:

Apache License

If you think the Android project Marble-Run listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package nttu.edu.entity;
/*from www  .j  a  v a 2  s  .  co  m*/
import nttu.edu.ball.Ball;
import nttu.edu.ball.Marble;
import nttu.edu.graphics.RenderView;
import nttu.edu.level.Stage;
import android.graphics.Canvas;
import android.util.FloatMath;

public class Bumper extends Terrain {
  
  public float radius;
  
  public Bumper(float x, float y, final float ratio) {
    super(x, y);
    radius = 16f * ratio;
    srcRect.set(0, 32, 16, 48);
    dstRect.set(this.x - radius, this.y - radius, this.x + radius, this.y + radius);
  }
  
  @Override
  public void tick(Stage s) {
    checkCollision(s.cue);
    for (Marble m : s.marbles) {
      checkCollision(m);
    }
  }
  
  @Override
  public void render(Canvas c, final float cx, final float cy) {
    if (bitmap != null) {
      float xOffset = this.x - RenderView.cameraX + cx;
      float yOffset = this.y - RenderView.cameraY + cy;
      if (RenderView.bounds.contains(xOffset, yOffset)) {
        move(xOffset, yOffset);
        c.drawBitmap(bitmap, srcRect, dstRect, null);
      }
    }
  }
  
  private void move(float f, float g) {
    if (bitmap != null) {
      dstRect.set(f - this.radius, g - this.radius, f + this.radius, g + this.radius);
    }
  }
  
  private void checkCollision(Ball b) {
    float dx = b.position[0] - x;
    float dy = b.position[1] - y;
    float distance = FloatMath.sqrt(dx * dx + dy * dy);
    if (distance < radius + b.radius)
      b.bumper = this;
    else if (b.bumper != null && b.bumper == this)
      b.bumper = null;
  }
  
}

Java Source Code List