闪光灯 - 设置帧数后停止AS3

Question

这可能是一个愚蠢的问题，因为我是flash专业版的新手，并且不知道太多。 所以我有一个框架与一些行动脚本（AS3）和这个脚本运行不断一旦开始。我想要的是一种停止脚本并继续播放电影的方法。例如，脚本只能在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; 
} 

Answer 1

由于该项目实际上并未使用框架，因此您可以设置一个计数器，并在调用输入框架事件时增加计数。尝试下面的解决方案。将200更改为您想要的号码。您可以trace(counter)太多，如果你喜欢

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; 
} 

一个Timer将工作以及太

Answer 2

如果在帧50添加事件侦听器：

this.addEventListener(Event.ENTER_FRAME, onEnter);

然后你就可以去除帧100相同的监听器：

this.removeEventListener(Event.ENTER_FRAME, onEnter);

这样， onEnter功能只能通过帧50到100调用。