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Andengine を使用して Android でゲームをビルドし、AnimatedSprite を使用して実行中の忍者を描画します。メソッド changeFrameDuration を使用して、忍者の移動速度に応じてアニメーションの速度を変更しています。

設定したフレーム時間の値に応じてアニメーションが遅くなるはずなのに、なぜアニメーションが非常に速くなるのかわかりません。

忍者のアニメーションが非常に高速で、現在のタイル インデックスが興味深いことを示している理由を確認するためにログを出力しました...

** Here the ninja is animated very slowly like supposed **
06-17 23:03:08.868: I/Ninja(15495): Animation frame duration : 1639 with current tile index : 0
06-17 23:03:08.888: I/Ninja(15495): Animation frame duration : 2048 with current tile index : 0
06-17 23:03:08.908: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:08.928: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:08.948: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:08.968: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:08.988: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.008: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.028: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.048: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.068: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.088: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.108: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.129: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.149: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.169: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.189: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0
06-17 23:03:09.209: I/Ninja(15495): Animation frame duration : 2561 with current tile index : 0

** Here it starts behing animated very fast (when supposed to be not very fast) **
06-17 23:03:09.229: I/Ninja(15495): Animation frame duration : 741 with current tile index : 0
06-17 23:03:09.249: I/Ninja(15495): Animation frame duration : 521 with current tile index : 2
06-17 23:03:09.269: I/Ninja(15495): Animation frame duration : 421 with current tile index : 3
06-17 23:03:09.289: I/Ninja(15495): Animation frame duration : 361 with current tile index : 3
06-17 23:03:09.309: I/Ninja(15495): Animation frame duration : 320 with current tile index : 4
06-17 23:03:09.329: I/Ninja(15495): Animation frame duration : 290 with current tile index : 5
06-17 23:03:09.349: I/Ninja(15495): Animation frame duration : 266 with current tile index : 5
06-17 23:03:09.369: I/Ninja(15495): Animation frame duration : 248 with current tile index : 6
06-17 23:03:09.389: I/Ninja(15495): Animation frame duration : 232 with current tile index : 7
06-17 23:03:09.409: I/Ninja(15495): Animation frame duration : 220 with current tile index : 7
06-17 23:03:09.429: I/Ninja(15495): Animation frame duration : 208 with current tile index : 8
06-17 23:03:09.449: I/Ninja(15495): Animation frame duration : 199 with current tile index : 8
06-17 23:03:09.469: I/Ninja(15495): Animation frame duration : 190 with current tile index : 9
06-17 23:03:09.489: I/Ninja(15495): Animation frame duration : 183 with current tile index : 9
06-17 23:03:09.509: I/Ninja(15495): Animation frame duration : 176 with current tile index : 10
06-17 23:03:09.529: I/Ninja(15495): Animation frame duration : 170 with current tile index : 10
06-17 23:03:09.549: I/Ninja(15495): Animation frame duration : 165 with current tile index : 11
06-17 23:03:09.569: I/Ninja(15495): Animation frame duration : 160 with current tile index : 11

** Here it starts behing animated at a normal rate (slowly accelerating) **
06-17 23:03:09.589: I/Ninja(15495): Animation frame duration : 155 with current tile index : 0
06-17 23:03:09.609: I/Ninja(15495): Animation frame duration : 151 with current tile index : 0
06-17 23:03:09.629: I/Ninja(15495): Animation frame duration : 147 with current tile index : 0
06-17 23:03:09.649: I/Ninja(15495): Animation frame duration : 143 with current tile index : 0
06-17 23:03:09.669: I/Ninja(15495): Animation frame duration : 140 with current tile index : 0
06-17 23:03:09.689: I/Ninja(15495): Animation frame duration : 137 with current tile index : 0
06-17 23:03:09.709: I/Ninja(15495): Animation frame duration : 134 with current tile index : 1
06-17 23:03:09.729: I/Ninja(15495): Animation frame duration : 131 with current tile index : 1
06-17 23:03:09.749: I/Ninja(15495): Animation frame duration : 128 with current tile index : 1
06-17 23:03:09.769: I/Ninja(15495): Animation frame duration : 126 with current tile index : 1
06-17 23:03:09.789: I/Ninja(15495): Animation frame duration : 124 with current tile index : 1
06-17 23:03:09.809: I/Ninja(15495): Animation frame duration : 121 with current tile index : 1
06-17 23:03:09.829: I/Ninja(15495): Animation frame duration : 119 with current tile index : 2
06-17 23:03:09.849: I/Ninja(15495): Animation frame duration : 117 with current tile index : 2
06-17 23:03:09.869: I/Ninja(15495): Animation frame duration : 115 with current tile index : 2
06-17 23:03:09.889: I/Ninja(15495): Animation frame duration : 113 with current tile index : 2
06-17 23:03:09.909: I/Ninja(15495): Animation frame duration : 112 with current tile index : 3
06-17 23:03:09.929: I/Ninja(15495): Animation frame duration : 110 with current tile index : 3
06-17 23:03:09.949: I/Ninja(15495): Animation frame duration : 108 with current tile index : 3
06-17 23:03:09.969: I/Ninja(15495): Animation frame duration : 107 with current tile index : 3
06-17 23:03:09.989: I/Ninja(15495): Animation frame duration : 105 with current tile index : 3
06-17 23:03:10.009: I/Ninja(15495): Animation frame duration : 104 with current tile index : 4
06-17 23:03:10.029: I/Ninja(15495): Animation frame duration : 103 with current tile index : 4
06-17 23:03:10.049: I/Ninja(15495): Animation frame duration : 101 with current tile index : 4
06-17 23:03:10.070: I/Ninja(15495): Animation frame duration : 100 with current tile index : 4
06-17 23:03:10.090: I/Ninja(15495): Animation frame duration : 99 with current tile index : 5
06-17 23:03:10.110: I/Ninja(15495): Animation frame duration : 98 with current tile index : 5
06-17 23:03:10.130: I/Ninja(15495): Animation frame duration : 97 with current tile index : 5

そして今私のコードについて、ここに重要な部分があります。

まず、BaseScene を拡張する GameScene があります。

public class GameScene extends BaseScene {
private static final String TAG = "GameScene";
private static final int TIME_BETWEEN_EACH_POSITION_BROADCAST = 250;

private AutoParallaxBackground parallaxBackground;
private Ninja player;
private Vector<Ninja> ninjas;
public int time;
public boolean isStarted = false;
private int timeSinceLastPositionBroadcast = 0;

@Override
protected void onManagedUpdate(float pSecondsElapsed) {
    super.onManagedUpdate(pSecondsElapsed);
    if(isStarted){
        int timeElapsed = Math.round(pSecondsElapsed*1000);
        Log.d(TAG, "Last time: "+time+", time elapsed: "+timeElapsed+", current time: "+(time+timeElapsed));
        time += timeElapsed;
        for(Ninja ninja : ninjas){
            ninja.update(pSecondsElapsed);
        }
        centerScreenOnPlayer();
        parallaxBackground.setParallaxChangePerSecond(player.getSpeed()/120f);
        timeSinceLastPositionBroadcast += timeElapsed;
        if(timeSinceLastPositionBroadcast >= TIME_BETWEEN_EACH_POSITION_BROADCAST){
            timeSinceLastPositionBroadcast -= TIME_BETWEEN_EACH_POSITION_BROADCAST;
            MessageManager.getInstance().broadcastPosition(time, player.getX(), player.getY());
        }
    }
}

private void centerScreenOnPlayer(){
    float newCenterX = player.getX()+200;
    float newCenterY = player.getY()+25;
    camera.setCenter(newCenterX, newCenterY);
}
}

そして、AnimatedSprite を拡張する Ninja クラスがあります。

public class Ninja extends AnimatedSprite {

    public void update(float secondsElapsed){
        updateX(secondsElapsed);
        updateY();
        updateAnimationSpeed();
        float maxSpeedParticleEmitterX = this.getX() + this.getWidth()/4;
        float maxSpeedParticleEmitterY = this.getY() + this.getHeight()/4;
        if(this.getWidth() != this.getWidthScaled()){
            maxSpeedParticleEmitterX -= this.getWidth()/4 * scaleModificationPercentage;
            maxSpeedParticleEmitterY -= this.getHeight()/4 * scaleModificationPercentage;
        }
        maxSpeedParticleEmitter.setCenter(maxSpeedParticleEmitterX, maxSpeedParticleEmitterY);
        maxSpeedParticleSystem.setCurrentTileIndex(this.getCurrentTileIndex());
        slice.setX(this.getX()+this.getWidth());
        slice.setY(this.getY());
    }

    private void updateAnimationSpeed(){
        float divideBy = currentSpeed;
        if(divideBy < 10)
            divideBy = 10;
        int frameDuration = (int) (ANIMATION_SPEED * MAX_MOVEMENT_SPEED / divideBy);    //y = k / x ... where k = 50 * 600 ... (normal max animation speed * max speed)
        if(this.isPlayer)
            Log.i(TAG, "Animation frame duration : "+frameDuration+" with current tile index : "+this.getCurrentTileIndex());
        this.changeFrameDuration(frameDuration);
    }
}

私のアニメーション化されたスプライトがタイルインデックスをゆっくりと変更するはずなのに、なぜ急速に変更しているのか、誰にも分かりますか?

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2 に答える 2

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AnimatedSprite は、そのフレーム期間をその場で大幅に (> 2000 から < 1000 に) 変更することを意図していないと思います。フレームが想定よりも速く変更される理由はわかりませんが、フレームの継続時間が 500 を超えたときにアニメーションを停止し、500 未満になったときにアニメーションを開始することで問題を解決できました。

于 2013-06-19T01:04:34.883 に答える