Thunder bangaws phlashers2009

phlashers year end AS3 contest 2009
swarm follows pointer
http://www.phlashers.com
hold down mouse button = ultraelectromagnetic storm

changko

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license : All rights reserved
modified : 2009-12-29 01:03:29

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package {
	//phlashers year end AS3 contest 2009
	//swarm follows pointer
	//http://www.phlashers.com
	//hold down mouse button = ultraelectromagnetic storm
	import flash.display.*
	import flash.events.*
	import flash.geom.*
	public class SG extends MovieClip{
	public var bd:BitmapData = new BitmapData(500,480,true,0x00000000)
	public 	var bd2:BitmapData = new BitmapData(500,480,true,0xFF000000)
	public 	var bmp:Bitmap = new Bitmap(bd)
	public 	var bmp2:Bitmap = new Bitmap(bd2)
		public var m:Matrix = new Matrix()
		public var pA:Array = new Array()
		public 	var sS:int = 200
		public 	var swm:BitmapData = new BitmapData(3,3)
		public 	var mkr:Sprite = new Sprite()
		public static var rpl:Boolean = false
		public static var bP:Number = .001
		public function SG() {
			addEventListener(Event.ENTER_FRAME,rtn,false,0,true) 
			stage.addEventListener(MouseEvent.MOUSE_DOWN,rplSwm,false,0,true)
			stage.addEventListener(MouseEvent.MOUSE_UP,attSwm,false,0,true)
			addChild(bmp2)
			addChild(bmp)
			for (var i:int =0; i<sS;i++) {
				aSW(mkr.x,mkr.y,mkr).life = -1	
			}
		}
		public function rtn(e:Event):void {
			var cTrn:ColorTransform = new ColorTransform()
			cTrn.alphaMultiplier = .9
			bd.lock()
			bd2.lock()
			bd.colorTransform(bd.rect,cTrn)
			prtn()
			mkr.x = mouseX
			mkr.y = mouseY
			bd.unlock()
			bd2.unlock()
		}
		protected function prtn():void {
			for (var i:String in pA) {
				var p:SW = pA[i]
					p.rtn()
					if (p.x > 500) {
						p.x=500
					}else if (p.x <0) {
						p.x=0
					}
					if (p.y > 480) {
						p.y=480
					}else if (p.y <0) {
						p.y=0
					}
					p.tP.x = mkr.x
					p.tP.y= mkr.y
					if (Math.random() < bP) {
						p.r = 20+ Math.random()*100
						p.g = 30+ Math.random()*100
						p.b = 150 + Math.random()*100
						var s:SW = pA[Math.floor(Math.random() * pA.length)]
						
						var b:Sprite = sB(s.x,s.y,p.x,p.y,-s.col)
						m.tx = s.x
						m.ty = s.y
						bd.draw(b,m)
					}
					var pt:Point = new Point(p.x-2,p.y-2)
					var cTrn:ColorTransform = new ColorTransform()
					cTrn.color = p.col
					swm.colorTransform(swm.rect, cTrn)
					bd.copyPixels(this[p.img],this[p.img].rect,pt,null,null,true)
				
			}
		}
		protected function aSW(xC:Number = 0,yC:Number = 0,tObj:Object = null):SW {
				var p:SW = new SW()
				pA.push(p)
				p.x = xC
				p.y = yC
				p.tObj = tObj
				return p
		}
		
		public function rplSwm(e:Event):void {
			bP = .1
			SG.rpl = true
		}
		public function attSwm(e:Event):void {
			bP = .001
			SG.rpl = false
		}
		protected function sB (xC1:Number,yC1:Number,xC2:Number,yC2:Number,col:uint=0xFF0000):Sprite {
			var freq:Number=20;
			var amp:Number=10;
			var dur:uint=1;
			var fx:Sprite=new Sprite ();
			fx.x=xC1;
			fx.y=yC1;
			var xd:Number=xC2 - xC1;
			var yd:Number=yC2 - yC1;
			var x1:Number =0;
			var y1:Number =0
			var x2:Number =xd;
			var y2:Number =yd
			var xseg:Number=Math.round(xd / freq);
			var yseg:Number=Math.round(yd / freq);
			var ref:Object = fx.graphics;
			ref.moveTo (x1,y1);
			ref.lineStyle (1,col,1);
			var i:Number=0;
			for (i=1; i < freq; i++) {
				var xpt:Number=x1 + i * xseg + Math.random() * amp - amp / 2;
				var ypt:Number=y1 + i * yseg + Math.random() * amp - amp / 2;
				ref.lineTo (xpt,ypt);
			}
			ref.lineTo (x2,y2);
			return fx
		}
	}
}
	import flash.geom.Point
	dynamic class SW{
		public var rR:Number = 20
		public var sp:Number = 5
		public var a:Number = 255
		public var r:Number = 255
		public var g:Number = 255
		public var b:Number = 255
		public var r2:Number = 255
		public var g2:Number = 0
		public var b2:Number = 0
		public var x:Number = 0
		public var y:Number = 0
		public var rot:Number = 0
		public var col:uint = 0x000000;
		public var xS:Number = Math.cos(rot * (Math.PI/180))
		public var yS:Number = Math.sin(rot * (Math.PI/180))
		public var split:Number = 100
		public var tR:Number = 0
		public var tP:Point
		public var life:Number = 100
		public var jnk:Boolean = false
		public var img:String = "swm"
		public function SW() {
			rot = Math.random() * 360
			tP = new Point(0,0)
			img = "swm"
			r = 0
			g = 0
			b = 0
		}
		public function aCl():void {
			col = (r << 16 | g << 8 | b)
		}
		public function rtn():void {
			var dx:Number = tP.x -x
			var dy:Number =tP.y -y
			var d:Number = Math.abs(dx) + Math.abs(dy)
			var a:Number = Math.atan2(dy,dx)
			r -= (r-r2)/20
			g -= (g-g2)/20
			b -= (b-b2)/20
			if (!SG.rpl) {
				tR = a * (180/Math.PI)
			}else{
				tR = (a * (180/Math.PI)) + 180
			}
			if (tR - rot > 180) {
					tR -= 360;
			}else if (rot - tR > 180){
					tR += 360;
			}
 			if (rot-tR == 0) {
				
			}else{
				rot -= (Math.abs(rot - tR)/(rot - tR)) * (Math.random() * rR);
			}
			xS = sp * Math.cos(rot * (Math.PI/180))
			yS = sp * Math.sin(rot * (Math.PI/180))
			x+=xS
			y+=yS
			
			b += d/10
			if (b > 255) {
				b = 255
			}
			aCl()
		}
	}

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