習作

なんとなく書いてみた。
某アニメのスプレーっぽくみえなくもない？

Spray

package
{
	import flash.events.Event;
	import flash.display.Sprite;
	import flash.display.Shape;
	import flash.events.MouseEvent;
	import flash.ui.Mouse;
	import flash.display.Graphics;
	[SWF(backgroundColor=0xffffff,frameRate=60)]
	public class Spray extends Sprite
	{
		public var arr:Array;
		public var s:Shape;
		public var i:uint=0;
		public var j:Number=10;
		public function Spray()
		{
			arr = new Array();
			stage.addEventListener(MouseEvent.MOUSE_DOWN,onMouseDown);
			stage.addEventListener(MouseEvent.MOUSE_UP,onMouseUp);
		}
		public function onMouseDown(event:MouseEvent):void{
			stage.addEventListener(Event.ENTER_FRAME,onEnterFrame);
		}
		public function onMouseUp(event:MouseEvent):void{
			stage.removeEventListener(Event.ENTER_FRAME,onEnterFrame);
			j=10;
		}
		public function onEnterFrame(event:Event):void{
			s = new Shape;
			var g:Graphics = s.graphics;
			g.beginFill(0x000000);
			g.drawRect(mouseX+MathUtil.randomNum(-j,j),mouseY+MathUtil.randomNum(-j,j),
MathUtil.randomInt(1,25),MathUtil.randomInt(1,25));
			g.endFill();
			arr.push(s);
			addChild(arr[i]);
			j+=0.5;
			if( arr.length > 10000 ) {
				removeChild(arr[0]);
				arr.splice(0,1);
			}else{
				i++;
			}
		}
	}
}

MathUtil.random*…はしばらく前のエントリで書いてたやつ。名前短くなってるけど。