explode? - ばくはつ？

by cpu_t 13 Jun 2010

Embed

/**
 * Copyright cpu_t ( http://wonderfl.net/user/cpu_t )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/qH4s
 */

package
{
    import flash.display.Sprite;
    import flash.display.BitmapData;
    import flash.display.Bitmap;
    import flash.events.Event;
    import flash.events.MouseEvent;
    [SWF(frameRate=60)]
    public class FlashTest extends Sprite
    {
    		private var bmpdata:BitmapData;
        public function FlashTest()
        {
        		this.graphics.beginFill(0);
        		this.graphics.drawRect(0,0,stage.stageWidth,stage.stageHeight);
        		
         	bmpdata=new BitmapData(stage.stageWidth,stage.stageHeight,false,0);
         	bmpdata.perlinNoise(bmpdata.width*.5,bmpdata.height*.5,3,Math.random()*0xFFFFFF,false,true);
         	
         	stage.addEventListener(MouseEvent.MOUSE_DOWN,function(e:Event):void
         	{
         		bmpdata.perlinNoise(bmpdata.width*.5,bmpdata.height*.5,3,Math.random()*0xFFFFFF,false,true);
         	});	
         	
         	addEventListener(Event.ENTER_FRAME,function(e:Event):void
         	{
         		var sp:Sprite=new Sprite();
         		var x:int,y:int;
         		x=stage.mouseX+(Math.random()-.5)*50;
         		y=stage.mouseY+(Math.random()-.5)*50;
         		if(x<0)x=0;
         		else if(x>=bmpdata.width)x=bmpdata.width-1;
         		if(y<0)y=0;
         		else if(y>=bmpdata.height)y=bmpdata.height-1;
         		
         		sp.x=x;
         		sp.y=y;
         		
         		var r:int=Math.random()*15+5;
         		var cnt:int=0;
         		var onEnterFrame:Function=function(e:Event):void
         		{
         			cnt++;
         			sp.graphics.clear();
         			sp.graphics.beginFill(bmpdata.getPixel(x,y));
         			if(cnt<r)
         			{
         				sp.graphics.drawCircle(0,0,cnt);
         			}
         			else if(cnt<r*2)
         			{
         				sp.graphics.drawCircle(0,0,r);
         				sp.graphics.drawCircle(0,0,cnt-r);
         			}
         			else
         			{
         				sp.removeEventListener(Event.ENTER_FRAME,onEnterFrame);
         				removeChild(sp);
         			}
         		};
         		sp.addEventListener(Event.ENTER_FRAME,onEnterFrame);
         		addChild(sp);
         	});
        }
    }
}