forked from: マウスについてくる火

by Kay 05 Mar 2009

• Forked from nyamogera's マウスについてくる火
• Diff: 91
• Related works: 3

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ball fire
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// write as3 code here..
package {
	import flash.display.*;
	import flash.events.Event;
	import flash.geom.*;
	import flash.filters.BlurFilter;

	[SWF(width="320",height="320",backgroundColor="0x000000",frameRate="32")]

	public class Take02 extends Sprite {
		public var vFire:Vector.<Vector3D> = new Vector.<Vector3D>();

		public function Take02():void {
			var blur:BlurFilter=new BlurFilter(14,16);
			filters=[blur];
			addEventListener( Event.ENTER_FRAME, EnterFrame);
		}

		private function EnterFrame( event:Event ):void {

			var p:Vector3D = new Vector3D();
			if (vFire.length > 0) {
				p.x = (vFire[vFire.length-1].x-mouseX)*0.85+mouseX;
				p.y = (vFire[vFire.length-1].y-mouseY)*0.85+mouseY+5.5;
			} else {
				p.x=mouseX;
				p.y=mouseY;
			}
			p.z=Math.random()*10-5;
			p.w=1;
			vFire.push(p);

			while(numChildren > 0) {
				removeChildAt(0);
			}
			while(vFire[0].w < 0.1) {
				vFire.shift();
			}
			vFire.forEach(render);
		}
		private function render(item:Vector3D, index:int, vector:Vector.<Vector3D>):void {
			vector[index].x = item.x+Math.random()*8-4;
			vector[index].y = item.y-Math.random()*4-3;
			var r:Number=Math.sqrt(item.w)*20;

			var shape:Shape = new Shape();
			shape.blendMode=BlendMode.ADD;
			shape.graphics.beginFill(0xff1f00);
			shape.graphics.drawCircle(vector[index].x, vector[index].y, r);
			shape.z = item.z;
			shape.alpha = Math.sqrt(item.w);
			addChild( shape );
			
			vector[index].w *= 0.85;
		}
	}
}