Actionscript 2:运行速度极慢

Question

当_global.choiceMade等于1时，我使用下面的代码在电影之间切换。

onClipEvent (load) {
    import mx.transitions.Tween;
    import mx.transitions.easing.*; 
}

onClipEvent (enterFrame) {
if (_global.choiceMade == 1) {
    var myTweenX:Tween = new Tween(this, "_x", mx.transitions.easing.Back.easeOut, this._x, -349, 0.5, True);
}
}

这包含在主时间线的每一帧中。第一次运行得很好，但是在下一帧上运行得非常慢(大约需要12秒而不是0.5秒，而且非常颠簸)，如果我回到第一帧，现在再运行一次，这一次非常慢。

我不明白为什么它这样做，我的CPU保持在6-15%左右，而它的运行，所以它不能太苛刻。

更新以显示我的代码的其余部分：

在主时间线上有一个框架，每个框架都包含一个电影。在每一部电影的时间表上，都包含：

//tint an object with a color just like Effect panel
//r, g, b between 0 and 255; amount between 0 and 100
Color.prototype.setTint = function(r, g, b, amount) {
var percent = 100-amount;
var trans = new Object();
trans.ra = trans.ga=trans.ba=percent;
var ratio = amount/100;
trans.rb = r*ratio;
trans.gb = g*ratio;
trans.bb = b*ratio;
this.setTransform(trans);
};//Robert Penner June 2001 - http://www.robertpenner.com
 MovieClip.prototype.scaleXY = function(to){
 this.onEnterFrame = function(){
 this._alpha = to-(to-this._alpha)/1.2;
 if(this._alpha > to-1 && this._alpha < to+1){
 this._alpha = to;
 delete this.onEnterFrame
 }
 }
 }
scoreUpdated = 0;
Answer = 1;
_global.choiceMade = 0;
Buttons = new Array(this.buttonHolder.True, this.buttonHolder.False);
Answers = new Array(this.Correct, this.Wrong);
for (i=0; i<Answers.length; i++) {
Answers[i]._alpha = 0;

}
for (b=0; b<Buttons.length; b++) {
Buttons[b].thisValue = b;

}

在这个电影中有两个电影按钮(真和假)，包含以下代码：

onClipEvent (enterFrame) {
this.onRollOver = function() {
    this.gotoAndStop("over");
};
this.onRollOut = function() {
    this.gotoAndStop("up");
};
this.onPress = function() {
    this.gotoAndStop("down");
};
this.onReleaseOutside = function() {
    this.gotoAndStop("up");
};
this.onRelease = function() {
    this.gotoAndStop("down");
    whichChoice = this;
    _global.choiceMade = 1;
    counter = 0;
};
if (_global.choiceMade == 1) {
    this.enabled = false;
this._parent.scoreNow = _global.score;
this._parent.scoreOutOf = (this._parent._parent._currentframe)- 1 + ( _global.choiceMade);
if (thisValue == this._parent._parent.Answer && whichChoice == this) {
    myColor = new Color(this);
    myColor.setTint(0,204,0,13);
    this._parent._parent.Answers[0]._alpha = 100;
    this._parent._parent.Answers[0].scaleXY(100);
    this.tick.swapDepths(1000);
    if (counter == 0) {
    _global.score++;
    counter++;
    }
} 
else if (thisValue == this._parent._parent.Answer) {
    myColor = new Color(this);
    myColor.setTint(0,204,0,13);
    this.tick.swapDepths(1000);
}
else if (whichChoice == this) {
    this._parent._parent.Answers[1]._alpha = 100;
    this._parent._parent.Answers[1].scaleXY(100);
    myColor = new Color(this);
    myColor.setTint(255,0,0,13);
    this.cross.swapDepths(1000);
}
else {
    myColor = new Color(this);
    myColor.setTint(255,0,0,13);
    myColor.setTint(255,0,0,13);
    this.cross.swapDepths(1000);
}
}
}

上面的脚本在电影上--这些按钮包含在buttonHolder中，按它说的做，当选择答案时，屏幕上的按钮就会显示出下一个按钮。

Answer 1

从我所看到的，只要你有choiceMade == 1，你就创造了一个新的效果！这是不对的。因为在1秒内，在15 fps，您将有15条消息运行:(

尝试yo设置choiceMade =0或其他值大于1

onClipEvent (enterFrame) 
{
    if (_global.choiceMade == 1) 
    {
        _global.choiceMade = -1;
        var myTweenX:Tween = new Tween(this, "_x", mx.transitions.easing.Back.easeOut, this._x, -349, 0.5, True);
    }
}

Answer 2

如果没有看到代码的其余部分，就很难确切地看到正在发生的事情。但是看起来你从来没有改变过choiceMade，而且它不断地重新创建了tween。

onClipEvent (enterFrame) {
if (_global.choiceMade == 1) {
    var myTweenX:Tween = new Tween(this, "_x", mx.transitions.easing.Back.easeOut,      this._x, -349, 0.5, True);
_global.choiceMade = 0;
}
}