17.添加背景音乐和音效

URL url = this.getClass().getResource(“/musics/gamemusic.wav”);
AudioClip ac = Applet._newAudioClip(url);
ac.play();

1.SoundPool
_/*
音乐播放的线程类
*/
_public class SoundPool extends Thread{

public static final String _BG_MUSIC_="game_music.wav";<br />    public static final String _SHOOT_="bullet.wav";<br />    public static final String _BOOM_="enemy0_down.wav";<br />    AudioClip ac;<br />    public SoundPool(String path){<br />        URL url =  this.getClass().getResource("/musics/"+path);<br />        ac =  Applet._newAudioClip_(url);<br />    }
public void play(){<br />        ac.play();<br />    }<br />    public void stopAc(){<br />        ac.stop();<br />    }<br />    public void loop(){<br />        ac.loop();<br />    }
@Override<br />    public void run() {<br />        play();<br />    }

}

SoundPool bgSoundPool;
SoundPool shootSoundPool;
private void startGameTask() {
bgRoll = new BgRoll();
shootTask = new ShootTask();
enemyTask = new EnemyTask();
hitTask = new HitTask();
timer.schedule(bgRoll, 0, 50);
timer.schedule(shootTask, 0, 200);
timer.schedule(enemyTask, 0, 1000);
timer.schedule(hitTask, 0, 50);
bgSoundPool = new SoundPool(SoundPool.BG_MUSIC);
bgSoundPool.loop();
shootSoundPool = new SoundPool(SoundPool.SHOOT);
shootSoundPool.loop();
}

private void pauseGameTask() {
bgRoll.cancel();
shootTask.cancel();
enemyTask.cancel();
hitTask.cancel();
bgSoundPool.stopAc();
shootSoundPool.stopAc();
}

// 判断敌机血槽是否已空
if (enemyAirplane.getBlood() == 0) {
enemy.setDead(true);
//播放销毁音效
new SoundPool(SoundPool.BOOM).play();
hero.setScore(hero.getScore()+enemyAirplane.getScore());
}