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这可能是一个愚蠢的问题，因为我是 flash pro 的新手，并且不太了解。所以我有一个带有一些动作脚本（AS3）的框架，这个脚本一旦启动就会不断运行。我想要的是一种停止脚本并继续播放电影的方法。因此，例如，脚本仅在 50-100 帧之间运行。这怎么可能？

var sw = 496;
var sh = 445;

var lightRadius:Number;
var frontLight:Sprite;
var backLight:Sprite;
var blur:BlurFilter;
var textClip:mcText;
var textClipMask:mcText;
var textClipShadow:mcText;
var offsetX:Number;
var offsetY:Number;
var angle:Number;
var scaleFactor:Number;
var blackRectangle:Sprite;
var lightAndDark:Sprite;
var textAndLightHolder:Sprite;
var spotWidth:Number;
var spotHeight:Number;
var ambientShade:uint;
var lightOnBackWallColor:uint;

var oscillationAmplitude:Number;

init();

function init():void {

lightRadius = 50;

spotWidth = 80;
spotHeight = 80;

offsetX = 0;
offsetY = -25;
scaleFactor = 1.25;

/*
We define colors below.

The ambientShade is best set to a gray value.  By multiplication of color values, it
controls how dark the text will be when it is not illuminated by the spotlight.
Setting ambientShade to 0x000000 (black) will cause the text to be completely invisible
when not illuminated.

The wall in the background can appear to have its own color, 
by setting lightOnBackWallColor.  If lightOnBackWallColor is set to a dull gray as
we have done below, the effect is of a diffused light.
*/
ambientShade = 0x111111;
lightOnBackWallColor = 0x444444;

textClip = new mcText();
textClip.x = sw/2;
textClip.y = sh/2;

textClipMask = new mcText();
textClipMask.x = sw/2;
textClipMask.y = sh/2;

textClipShadow = new mcText();
textClipShadow.scaleX = textClipShadow.scaleY = scaleFactor;
textClipShadow.transform.colorTransform = new ColorTransform(0,0,0,1);
var shadowBlur:BlurFilter = new BlurFilter(6,6);
shadowBlur.quality = BitmapFilterQuality.HIGH;
textClipShadow.filters = [shadowBlur];
textClipShadow.x = textClip.x + offsetX;
textClipShadow.y = textClip.y + offsetY;

var matrix:Matrix = new Matrix();
matrix.createGradientBox(2*spotWidth,2*spotHeight,0,-spotWidth,-spotHeight);
frontLight = new Sprite();
frontLight.graphics.beginGradientFill("radial",[0xFFFFFF,ambientShade],[1,1],[64,255],matrix);
frontLight.graphics.drawEllipse(-spotWidth,-spotHeight,2*spotWidth,2*spotHeight);
frontLight.graphics.endFill();

matrix = new Matrix();
matrix.createGradientBox(2*scaleFactor*spotWidth,2*scaleFactor*spotHeight,0,-scaleFactor*spotWidth,-scaleFactor*spotHeight);
backLight = new Sprite();
backLight.graphics.beginGradientFill("radial",[lightOnBackWallColor,0x000000],[1,1],[32,255],matrix);
backLight.graphics.drawEllipse(-scaleFactor*spotWidth,-scaleFactor*spotHeight,2*scaleFactor*spotWidth,2*scaleFactor*spotHeight);
backLight.graphics.endFill();

frontLight.x = sw/2;
frontLight.y = sh/2;
backLight.x = frontLight.x + offsetX;
backLight.y = frontLight.y + offsetY;

blackRectangle = new Sprite();
blackRectangle.graphics.beginFill(ambientShade);
var rect = textClip.getBounds(textClip);
blackRectangle.graphics.drawRect(rect.left-2, rect.top-2, rect.width+4, rect.height+4);
blackRectangle.graphics.endFill();
blackRectangle.x = sw/2;
blackRectangle.y = sh/2;

lightAndDark = new Sprite();
lightAndDark.addChild(blackRectangle);
lightAndDark.addChild(frontLight);


lightAndDark.blendMode = BlendMode.MULTIPLY;

textAndLightHolder = new Sprite();

this.addChild(backLight);
this.addChild(textClipShadow);
this.addChild(textAndLightHolder);
textAndLightHolder.addChild(textClip);
textAndLightHolder.addChild(lightAndDark);
this.addChild(textClipMask);

textAndLightHolder.mask = textClipMask;

oscillationAmplitude = (sw/2 - backLight.width/2)/scaleFactor - 2;

this.addEventListener(Event.ENTER_FRAME, onEnter);  
}

function onEnter(evt:Event):void {
frontLight.x = 0.5*sw - oscillationAmplitude*Math.cos(getTimer()*0.0005);
backLight.x = 0.5*sw - scaleFactor*(0.5*sw-frontLight.x) + offsetX;
}
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2 回答 2

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如果要在第 50 帧添加事件侦听器：

this.addEventListener(Event.ENTER_FRAME, onEnter);

然后您可以在第 100 帧上删除相同的侦听器：

this.removeEventListener(Event.ENTER_FRAME, onEnter);

这样，onEnter 函数只会在第 50 到 100 帧时被调用。

于 2013-04-30T16:34:43.087 回答
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由于该项目实际上并未使用帧，因此您可以设置一个计数器并在调用输入帧事件时增加计数。尝试以下解决方案。更改200为您想要的任何数字。trace(counter)如果你喜欢你也可以

var sw = 600;
var sh = 320;

var lightRadius:Number;
var frontLight:Sprite;
var backLight:Sprite;
var blur:BlurFilter;
var textClip:mcText;
var textClipAmbient:mcText;
var textClipShadow:mcText;
var offsetX:Number;
var offsetY:Number;
var angle:Number;
var scaleFactor:Number;
var textCenterX:Number;
var textCenterY:Number;
var illuminatedTextColor:uint;
var ambientColor:uint;
var lightOnBackWallColor:uint;
var counter:Number = 0; //-- Define a variable, counter

init();

function init():void {

    textCenterX = sw/2;
    textCenterY = sh/2 - 10;

    lightRadius = 53;

    /*
    We define colors below.
    illuminatedTextColor is the color of the text when it is fully 
    illuminated by the spotlight.

    The ambient color is the color of the text when it is not illuminated.
    Setting ambient color to 0x000000 (black) makes the text completely invisible when
    not under the spotlight.

    The wall in the background can appear to have its own color, 
    by setting lightOnBackWallColor.  If lightOnBackWallColor is set to a dull gray as
    we have done above, the effect is of a diffused light.
    */
    ambientColor = 0x000000;
    illuminatedTextColor = 0xFFFFFF;
    lightOnBackWallColor = 0x555555;

    //Try different colors to see the effect:
    //ambientColor = 0x181111;
    //illuminatedTextColor = 0xFF4444;
    //lightOnBackWallColor = 0x556066;

    //the offset parameters determine where the shadow will lie.
    //The scaleFactor determines how large the shadow will be compared to
    //the text.  A large shadow suggests a wall further back (or the light being closer).
    offsetX = 0;
    offsetY = -40;
    scaleFactor = 1.25;

    textClip = new mcText();
    textClip.x = textCenterX;
    textClip.y = textCenterY;

    textClipAmbient = new mcText();
    textClipAmbient.x = textClip.x;
    textClipAmbient.y = textClip.y;
    var red:Number = (ambientColor >> 16);
    var green:Number = (ambientColor >> 8) & 0xFF;
    var blue:Number = ambientColor & 0xFF;
    textClipAmbient.transform.colorTransform = new ColorTransform(0,0,0,1,red,green,blue);

    textClipShadow = new mcText();
    textClipShadow.scaleX = textClipShadow.scaleY = scaleFactor;
    textClipShadow.transform.colorTransform = new ColorTransform(0,0,0,1);
    var shadowBlur:BlurFilter = new BlurFilter(5,5);
    shadowBlur.quality = BitmapFilterQuality.HIGH;
    textClipShadow.filters = [shadowBlur];
    textClipShadow.x = textClip.x + offsetX;
    textClipShadow.y = textClip.y + offsetY;

    var matrix:Matrix = new Matrix();
    matrix.createGradientBox(2*lightRadius,2*lightRadius,0,-lightRadius,-lightRadius);
    frontLight = new Sprite();
    frontLight.graphics.beginGradientFill("radial",[illuminatedTextColor,ambientColor],[1,1],[16,255],matrix);
    frontLight.graphics.drawEllipse(-lightRadius,-lightRadius,2*lightRadius,2*lightRadius);
    frontLight.graphics.endFill();

    matrix = new Matrix();
    matrix.createGradientBox(2*scaleFactor*lightRadius,2*scaleFactor*lightRadius,0,-scaleFactor*lightRadius,-scaleFactor*lightRadius);
    backLight = new Sprite();
    backLight.graphics.beginGradientFill("radial",[lightOnBackWallColor,0x000000],[1,1],[16,255],matrix);
    backLight.graphics.drawEllipse(-scaleFactor*lightRadius,-scaleFactor*lightRadius,2*scaleFactor*lightRadius,2*scaleFactor*lightRadius);
    backLight.graphics.endFill();

    frontLight.x = textCenterX;
    frontLight.y = textCenterY+15;
    backLight.x = frontLight.x + offsetX;
    backLight.y = frontLight.y + offsetY;

    this.addChild(backLight);
    this.addChild(textClipShadow);
    this.addChild(textClipAmbient);
    this.addChild(frontLight);
    this.addChild(textClip);
    frontLight.mask = textClip;

    this.addEventListener(Event.ENTER_FRAME, onEnter);

}

function onEnter(evt:Event):void {
    counter++; //-- Increase the counter var
    //-- When counter is 200, stop the enter frame event
    if (counter > 200) this.removeEventListener(Event.ENTER_FRAME, onEnter); 
    frontLight.x = textCenterX - 0.3*sw*Math.cos(getTimer()*0.0006);
    backLight.x = textCenterX - scaleFactor*(textCenterX-frontLight.x) + offsetX;
}

ATimer也可以

于 2013-04-30T16:40:27.927 回答