flash on 2012-9-21

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

package {
    import flash.ui.Keyboard;
    import flash.events.KeyboardEvent;
    import flash.events.Event;
    import flash.display.Graphics;
    import flash.text.engine.SpaceJustifier;
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        
        public var ps:Sprite;
        
        public function FlashTest() {
            // write as3 code here..
            
            ps = new Sprite();
            var g:Graphics;
            g = ps.graphics;
            g.clear();
            g.lineStyle(2,0);
            g.drawCircle(0,0,8);
            g.moveTo(0,0);
            g.lineTo(8,0);
            addChild(ps);
            ps.x = 200;
            ps.y= 200;
            
            stage.addEventListener(Event.ENTER_FRAME, onEnter);
            stage.addEventListener(KeyboardEvent.KEY_DOWN, kdown);
            stage.addEventListener(KeyboardEvent.KEY_UP, kup);
        }//ctor
        
        public var vecKey:Vector.<Boolean> = new Vector.<Boolean>(512,false);
        public function kdown(e:KeyboardEvent):void
        { vecKey[e.keyCode] = true;}
        public function kup(e:KeyboardEvent):void
        { vecKey[e.keyCode] = false;}
        
        public var vx:Number = 0;
        public var vy:Number = 0;
        public var va:Number = 0;

        
        public function onEnter(e:Event):void
        {
            if (vecKey[Keyboard.LEFT]) { vx -= 0.4;}
            if (vecKey[Keyboard.RIGHT]) { vx+=0.4;}
            if (vecKey[Keyboard.UP]) { vy -= 0.4;}
            if (vecKey[Keyboard.DOWN]) { vy += 0.4;}
            
            vx *= 0.99;
            vy *= 0.99;
           
            if (ps.x<10) { ps.x = 10; vx=0;}
            if (ps.x > 390) { ps.x = 390; vx =0;}
            if (ps.y < 10) { ps.y = 10; vy =0;}
            if (ps.y > 390) { ps.y= 390; vy = 0;}           
                      
            ps.x += vx;
            ps.y += vy;
            
            var dx:Number;
            var dy:Number;
            
            dx = mouseX - ps.x;
            dy = mouseY - ps.y;
            
            va = Math.atan2(dy, dx);
            
            ps.rotation = va * (180/3.1415);
            
            
        }//onenter
        
    }//classend
}