flash on 2010-5-8

/**
 * Copyright toburau ( http://wonderfl.net/user/toburau )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/3H1K
 */

//
package
{
    import flash.display.Sprite;
    import flash.events.Event;

    [SWF(frameRate="30", width="465", height="465", backgroundColor="0x000000")]

    public class Project10 extends Sprite
    {
        public function Project10()
        {
            main = this;
            initialize();
            addEventListener(Event.ENTER_FRAME, update);
        }
    }
}

import flash.display.Sprite;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.geom.Rectangle;
import flash.geom.Vector3D;
import flash.events.Event;
import flash.events.MouseEvent;

const SCREEN_WIDTH:int = 465;
const SCREEN_HEIGHT:int = 465;

var main:Sprite;
var buffer:BitmapData = new BitmapData(SCREEN_WIDTH, SCREEN_HEIGHT, false, 0);
var isMouseClicked:Boolean;
var mousePos:Vector3D = new Vector3D;
var rect:Rectangle = new Rectangle;

function initialize():void
{
    main.addChild(new Bitmap(buffer));
    main.stage.addEventListener(MouseEvent.CLICK, function(e:Event):void { isMouseClicked = true; } );
}

function update(event:Event):void
{
    mousePos.x = main.stage.mouseX - SCREEN_WIDTH / 2;
    mousePos.y = main.stage.mouseY - SCREEN_HEIGHT / 2;
    if(isMouseClicked)
    {
        isMouseClicked = false;
    }
    buffer.lock();
    buffer.fillRect(buffer.rect, 0);
    drawBox(mousePos.x, mousePos.y, 7, 0xee0000);
    buffer.unlock();
}

function drawBox(x:Number, y:Number, size:int, color:int):void
{
    rect.x = x - size / 2 + SCREEN_WIDTH / 2;
    rect.y = y - size / 2 + SCREEN_HEIGHT / 2;
    rect.width = rect.height = size;
    buffer.fillRect(rect, color);
}