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在2016年寒假，《复仇者联盟2》上映后，网上也推出了Flash小游戏。这是我当年根据效果自己模拟的破碎效果，可能稍微逊色。
在舞台上创建实例名称为img的影片剪辑，文件类填写Fragment。
package
{//2016.02.11//正弦前锋import flash.display.DisplayObject;import flash.display.Graphics;import flash.geom.Point;import flash.display.Shape;import flash.display.MovieClip;import flash.events.Event;import flash.display.BitmapData;import flash.display.Bitmap;import flash.geom.Rectangle;import flash.events.MouseEvent;import flash.display.Sprite;import flash.utils.Timer;import flash.events.TimerEvent;import fl.transitions.Tween;import flash.geom.ColorTransform;import flash.filters.GlowFilter;public class Fragment extends Sprite{public var img:MovieClip;private var pstartr:Number = Math.random() * 2;private var pcenter:Point = new Point(400,300);private var rounds:Array = [];private var breakpoints:Number = 18;private var pieces:Array = [];private var pieces2:Array = [];private var sps:Number;private var stateW:Number = 800;private var stateH:Number = 600;private var lastR:Number;private var lengths:Array;private var played:Boolean = false;private var compNum:Number = 0;private var timer:Timer = new Timer(5);public function Fragment(){img.gotoAndStop(1);stage.addEventListener(MouseEvent.CLICK,onClick);timer.addEventListener(TimerEvent.TIMER,onTimer);}private function getRound(r:Number,p:Number):Array{var angle:Number = 2 * Math.PI / p;var pstart:Number = pstartr * Math.PI;var pp:Array = [];var i:Number;for (i=1; i<=p; i++){var vp:Number = pstart + angle * (i - 1);var vx:Number = Math.cos(vp) * r + Math.random() / 5 * r;var vy:Number = Math.sin(vp) * r + Math.random() / 5 * r;pp[i] = new Point(Math.round(vx),Math.round(vy));}return pp;}private function getMost(p:Array):Object //找出坐标取最值的碎片{var t:Point = new Point ;var i:Number;var u:Array = new Array ;var o:Object = new Object ;var xmin:Number = 0;var ymin:Number = 0;t.x = p[1].x;t.y = p[1].y;for (i=1; i<p.length; ++i){u[i] = new Point ;u[i].x = p[i].x;u[i].y = p[i].y;}for (i=2; i<p.length; ++i){if (t.x > p[i].x){t.x = p[i].x;}if (t.y > p[i].y){t.y = p[i].y;}}xmin = t.x;ymin = t.y;for (i=1; i<u.length; ++i){u[i].x -= xmin;u[i].y -= ymin;}o.arr = u;o.x = xmin;o.y = ymin;return o;}private function getPieces(r:Array):MovieClip //绘制碎片多边形轮廓{var k:MovieClip = new MovieClip ;k.graphics.beginFill(0x000000,1);k.graphics.lineStyle(0,0x000000);k.graphics.moveTo(r[1].x,r[1].y);for (var i=2; i<r.length; ++i){k.graphics.lineTo(r[i].x,r[i].y);}k.graphics.endFill();return k;}public function breakIt(mc:MovieClip):void //破裂{var sp_z:Number = (Math.random()>0.2?-1:1)*Math.random() * 5;var sp_y:Number = (mc.y - pcenter.y) * Math.random() / 7-40;var sp_x:Number = (mc.x - pcenter.x) * Math.random() / 7;sp_y = (sp_y < -40) ? -40:40;var sp_rx:Number = (Math.random()>0.2?-1:1)*Math.random() * 10;var sp_ry:Number = (Math.random()>0.2?-1:1)*Math.random() * 10;var sp_rz:Number = (Math.random()>0.2?-1:1)*Math.random() * 10;var dec_x:Number = (mc.x-pcenter.x)/Math.abs(mc.x-pcenter.x)*2;mc.addEventListener(Event.ENTER_FRAME,fl_run);function fl_run(e:Event):void //运动效果，每帧一循环{mc.z += sp_z / sps;mc.y += sp_y / sps;mc.x += sp_x / sps;mc.rotationX += sp_rx / sps;mc.rotationY += sp_ry / sps;mc.rotationZ += sp_rz / sps;sp_y += 10 / sps;sp_x -= dec_x * 2 / sps;if (sps>=4){sps -= 0.01;}if (mc.y > stateH){mc.removeEventListener(Event.ENTER_FRAME,fl_run);mc.visible = false;removeChild(mc);++compNum;if (compNum>=(lengths.length-1)*breakpoints){played = false;}}}}public function main():void{var i:Number;var j:Number;rounds = [];for (i=0; i<=lengths.length-1; ++i){rounds.push(getRound(lengths[i],breakpoints));}for (i=0; i<=lengths.length-2; ++i){var ar:Array = [];pieces[i] = new Array ;pieces2[i] = new Array ;for (j=1; j<=breakpoints; ++j){var m:Number= (j+1>breakpoints)?1:(j+1);var ok:Object = new Object ;var br:Number=((Math.random()>0.6)?15:-15)*Math.random()*2; //随机生成各个近似同心圆碎片组合ar[1] = rounds[i][j];ar[2] = rounds[i + 1][j];ar[3] = rounds[i + 1][m];ar[4] = rounds[i][m];ok = getMost(ar);ar = ok.arr;pieces[i][j] = getPieces(ar);pieces[i][j].x = ok.x;pieces[i][j].y = ok.y;pieces[i][j].x += pcenter.x;pieces[i][j].y += pcenter.y;pieces2[i][j] = attachBitmap(img,pieces[i][j],br);addChild(pieces2[i][j]);}}}public function onClick(e:MouseEvent):void{if (! played){pcenter.x = stage.mouseX;pcenter.y = stage.mouseY;if (pcenter.x > stateW / 2){lastR = pcenter.x * Math.sqrt(2);}else{lastR = (stateW - pcenter.x) * Math.sqrt(2);}lengths = new Array(20,80,240,lastR);main();sps = 6;compNum = 0;played = true;img.gotoAndStop(img.currentFrame==img.totalFrames?1:(img.currentFrame+1));timer.start();}}public function onTimer(e:TimerEvent):void{timer.reset();for (var i=0; i<=lengths.length-2; ++i){for (var j=1; j<=breakpoints; ++j){breakIt(pieces2[i][j]);}}}public function attachBitmap(mc:MovieClip,shape:MovieClip=null,brightness:Number=0):MovieClip{var datax:Number = shape.x;var datay:Number = shape.y;var rect:Rectangle = new Rectangle(datax,datay,shape.width,shape.height);var bmp:BitmapData = new BitmapData(stateW*Math.sqrt(2),stateH*Math.sqrt(2),true,0x000000);var nbmp:BitmapData = new BitmapData(shape.width,shape.height,true,0x000000);var gf:GlowFilter=new GlowFilter((Math.random()>0.4)?(0x000000):(0xFFFFFF));var bmp2:Bitmap = new Bitmap ;var mc2:MovieClip = new MovieClip ;var mc3:MovieClip = new MovieClip ;gf.blurX = 2;gf.blurY = 2;gf.strength = 10;bmp.fillRect(bmp.rect,0x000000);bmp.draw(mc);nbmp.lock();nbmp.copyPixels(bmp,rect, new Point(0,0));nbmp.unlock();bmp2.bitmapData = nbmp;mc2.addChild(bmp2);shape.x = 0;shape.y = 0;mc3.addChild(mc2);mc3.addChild(shape);mc2.mask = shape;mc3.z = 20 - Math.random() * 40;mc3.x = datax;mc3.y = datay;mc3.filters = new Array(gf);setBrightness(mc3,brightness);return mc3;}public function setBrightness(obj:DisplayObject,value:Number):void //亮度调节{var colorTransformer:ColorTransform = obj.transform.colorTransform;var backup_filters:* = obj.filters;value /= 100;if (value >= 0){colorTransformer.blueMultiplier = 1 - value;colorTransformer.redMultiplier = 1 - value;colorTransformer.greenMultiplier = 1 - value;colorTransformer.redOffset = 255 * value;colorTransformer.greenOffset = 255 * value;colorTransformer.blueOffset = 255 * value;}else{value = Math.abs(value);colorTransformer.blueMultiplier = 1 - value;colorTransformer.redMultiplier = 1 - value;colorTransformer.greenMultiplier = 1 - value;colorTransformer.redOffset = 0;colorTransformer.greenOffset = 0;colorTransformer.blueOffset = 0;}obj.transform.colorTransform = colorTransformer;obj.filters.push(backup_filters);}}}资源地址：http://pan.baidu.com/s/1dEiCj0P
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