如何停止基于 actionscript 而不是movieclip 的自动循环动画？我已经尝试在结束帧上添加一个停止但没有工作。顺便说一句，我正在使用 actionscript 3.0。
init();
function init():void {
displayWidth = 785;
displayHeight = 285;
waitCount = 100;
minWait = 10;
maxWait = 130;
count = waitCount - 1;
flareList = new Particle3DList();
sparkList = new Particle3DList();
maxDragFactorFlare = 0.6;
maxDragFactorSpark = 0.6;
maxNumSparksAtNewFirework = 3000;
gravity = 0.03;
maxNumFlares = 90;
maxNumSparksPerFlare = 2;
topMargin = 6;
displayHolder = new Sprite;
displayHolder.x = 100;
displayHolder.y = 0;
sparkBitmapData = new BitmapData(displayWidth, displayHeight, true, 0x00000000);
sparkBitmap = new Bitmap(sparkBitmapData);
var alphaToWhite:Number = 0.5;
var alphaMult:Number = 1.6;
var cmf:ColorMatrixFilter = new ColorMatrixFilter([1,0,0,alphaToWhite,0, 0,1,0,alphaToWhite,0, 0,0,1,alphaToWhite,0, 0,0,0,alphaMult,0]);
sparkBitmap.filters = [cmf];
sky = new Sprite();
starLayer = new Sprite();
starLayer.x = 0;
starLayer.y = 0;
starLayer.blendMode = BlendMode.LIGHTEN;
var k:int;
var starGray:Number;
var starY:Number;
for (k = 0; k < 100; k++) {
starY = Math.random()*(displayHeight - 2);
}
var skyline:Sprite = new McSkyline() as Sprite;
skyline.x = 1000;
skyline.y = 1000;
var frame:Shape = new Shape();
frame.graphics.drawRect(0,0,displayWidth,displayHeight);
frame.x = displayHolder.x;
frame.y = displayHolder.y;
this.addChild(displayHolder);
displayHolder.addChild(sky);
displayHolder.addChild(starLayer);
displayHolder.addChild(sparkBitmap);
displayHolder.addChild(skyline);
this.addChild(frame);
darken = new ColorTransform(1,1,1,0.87);
blur = new BlurFilter(4,4,1);
origin = new Point(0,0); //used in filters
colorList = new <uint>[0x68ff04, 0xefe26d, 0xfc4e50, 0xfffae7, 0xffffff, 0xffc100, 0xe02222,0xffa200,0xff0000,0x8aaafd,0x3473e5, 0xc157b7,0x9b3c8a, 0xf9dc98, 0xdc9c45, 0xee9338];
this.addEventListener(Event.ENTER_FRAME, onEnter);
}
function onEnter(evt:Event):void {
count++;
if ((count >= waitCount)&&(sparkList.numOnStage < maxNumSparksAtNewFirework)) {
随机化器
waitCount = minWait+Math.random()*(maxWait - minWait);
fireworkColor = randomColor();
count = 0;
flareOriginX = 125 + Math.random()*300;
flareOriginY = 90 + Math.random()*90;
var i:int;
var sizeFactor:Number = 0.1 + Math.random()*0.9;
numFlares = (0.25+0.75*Math.random()*sizeFactor)*maxNumFlares;
for (i = 0; i < numFlares; i++) {
var thisParticle:Particle3D = flareList.addParticle(flareOriginX, flareOriginY,0);
theta = 2*Math.random()*Math.PI;
phi = Math.acos(2*Math.random()-1);
mag = 8 + sizeFactor*sizeFactor*10;//sizeFactor*(60 + 3*Math.random());
thisParticle.vel.x = mag*Math.sin(phi)*Math.cos(theta);
thisParticle.vel.y = mag*Math.sin(phi)*Math.sin(theta);
thisParticle.vel.z = mag*Math.cos(phi);
thisParticle.airResistanceFactor = 0.015;
//envelope - this determines how long a flare will live.
thisParticle.envelopeTime1 = 45 + 60*Math.random();
thisParticle.color = fireworkColor;
}
}
particle = flareList.first;
while (particle != null) {
nextParticle = particle.next;
dragFactor = particle.airResistanceFactor*Math.sqrt(particle.vel.x*particle.vel.x + particle.vel.y*particle.vel.y + particle.vel.z*particle.vel.z);
if (dragFactor > maxDragFactorFlare) {
dragFactor = maxDragFactorFlare;
}
particle.vel.x += 0.05*(Math.random()*2 - 1);
particle.vel.y += 0.05*(Math.random()*2 - 1) + gravity;
particle.vel.z += 0.05*(Math.random()*2 - 1);
particle.vel.x -= dragFactor*particle.vel.x;
particle.vel.y -= dragFactor*particle.vel.y;
particle.vel.z -= dragFactor*particle.vel.z;
particle.pos.x += particle.vel.x;
particle.pos.y += particle.vel.y;
particle.pos.z += particle.vel.z;
particle.age += 1;
if (particle.age > particle.envelopeTime1) {
particle.dead = true;
}
if ((particle.dead)||(particle.pos.x > displayWidth) || (particle.pos.x < 0) || (particle.pos.y > displayHeight) || (particle.pos.y < -topMargin)) {
flareList.recycleParticle(particle);
}
else {
numSparks = Math.floor(Math.random()*(maxNumSparksPerFlare+1)*(1 - particle.age/particle.envelopeTime1));
for (i = 0; i < maxNumSparksPerFlare; i++) {
randDist = Math.random();
var thisSpark:Particle3D = sparkList.addParticle(particle.pos.x - randDist*particle.vel.x, particle.pos.y - randDist*particle.vel.y, 0, 0);
thisSpark.vel.x = 0.2*(Math.random()*2 - 1);
thisSpark.vel.y = 0.2*(Math.random()*2 - 1);
thisSpark.envelopeTime1 = 10+Math.random()*40;
thisSpark.envelopeTime2 = thisSpark.envelopeTime1 + 6 + Math.random()*6;
thisSpark.airResistanceFactor = 0.2;
thisSpark.color = particle.color;
}
}
particle = nextParticle;
}
sparkBitmapData.lock();
//old particles will not be erased. Instead we will apply filters which more gradually fade out the particles.
sparkBitmapData.colorTransform(sparkBitmapData.rect, darken);
sparkBitmapData.applyFilter(sparkBitmapData, sparkBitmapData.rect, origin, blur);
spark = sparkList.first;
while (spark != null) {
nextSpark = spark.next;
dragFactor = spark.airResistanceFactor*Math.sqrt(spark.vel.x*spark.vel.x + spark.vel.y*spark.vel.y);
if (dragFactor > maxDragFactorSpark) {
dragFactor = maxDragFactorSpark;
}
spark.vel.x += 0.07*(Math.random()*2 - 1);
spark.vel.y += 0.07*(Math.random()*2 - 1) + gravity;
spark.vel.x -= dragFactor*spark.vel.x;
spark.vel.y -= dragFactor*spark.vel.y;
spark.pos.x += spark.vel.x;
spark.pos.y += spark.vel.y;
spark.age += 1;
if (spark.age < spark.envelopeTime1) {
sparkAlpha = 255;
}
else if (spark.age < spark.envelopeTime2) {
sparkAlpha = -255/spark.envelopeTime2*(spark.age - spark.envelopeTime2);
}
else {
spark.dead = true;
}
if ((spark.dead)||(spark.pos.x > displayWidth) || (spark.pos.x < 0) || (spark.pos.y > displayHeight) || (spark.pos.y < -topMargin)) {
sparkList.recycleParticle(spark);
}
sparkColor = (sparkAlpha << 24) | spark.color;
presentAlpha = (sparkBitmapData.getPixel32(spark.pos.x, spark.pos.y) >> 24) & 0xFF;
if (sparkAlpha > presentAlpha) {
sparkBitmapData.setPixel32(spark.pos.x, spark.pos.y, sparkColor);
}
spark = nextSpark;
}
sparkBitmapData.unlock();
grayAmt = 4 + 26*sparkList.numOnStage/5000;
if (grayAmt > 30) {
grayAmt = 30;
}
sky.transform.colorTransform = new ColorTransform(1,1,1,1,grayAmt,grayAmt,1.08*grayAmt,0);
}
function randomColor():uint {
var index:int = Math.floor(Math.random()*colorList.length);
return colorList[index];
}