AnimatedParticle.java

package com.plattysoft.leonids;

import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.BitmapDrawable;

public class AnimatedParticle extends Particle {

	private AnimationDrawable mAnimationDrawable;
	private int mTotalTime;

	public AnimatedParticle(AnimationDrawable animationDrawable) {
		mAnimationDrawable = animationDrawable;
		mImage = ((BitmapDrawable) mAnimationDrawable.getFrame(0)).getBitmap();
		// If it is a repeating animation, calculate the time
		mTotalTime = 0;
		for (int i=0; i<mAnimationDrawable.getNumberOfFrames(); i++) {
			mTotalTime += mAnimationDrawable.getDuration(i);
		}
	}

	@Override
	public boolean update(long miliseconds) {
		boolean active = super.update(miliseconds);
		if (active) {
			long animationElapsedTime = 0;
			long realMiliseconds = miliseconds - mStartingMilisecond;
			if (realMiliseconds > mTotalTime) {
				if (mAnimationDrawable.isOneShot()) {
					return false;
				}
				else {
					realMiliseconds = realMiliseconds % mTotalTime;
				}
			}
			for (int i=0; i<mAnimationDrawable.getNumberOfFrames(); i++) {
				animationElapsedTime += mAnimationDrawable.getDuration(i);
				if (animationElapsedTime > realMiliseconds) {
					mImage = ((BitmapDrawable) mAnimationDrawable.getFrame(i)).getBitmap();
					break;
				}
			}
		}
		return active;
	}
}