flash on 2010-5-6

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

package {
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.KeyboardEvent;
    import flash.ui.Keyboard;
    
    import flash.accessibility.Accessibility;
    public class Shipsim extends Sprite {
    		private var ship:Ship;
    		private var vr:Number = 0;
    		private var thrust:Number = 0;
    		private var vx:Number = 0;
    		private var vy:Number = 0;
    		
    		public function Shipsim() {
            init();
        }
        
        private function init():void {
        		ship = new Ship();
        		addChild( ship );
        		ship.x = stage.stageWidth / 2;
        		ship.y = stage.stageHeight / 2;
        		addEventListener(Event.ENTER_FRAME, onEnterFrame);
        		stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
        		stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp);
        }
        
        private function onKeyDown( e:KeyboardEvent ):void {
        		switch( e.keyCode ){
        			case Keyboard.LEFT:
        			vr = -5;
        			break;
        			
        			case Keyboard.RIGHT:
        			vr = 5;
        			break;
        			
        			case Keyboard.UP:
        			thrust = 0.2;
        			ship.draw( true );
        			break;
        			
        			default:
        			break;
        		}
        }
        
        private function onKeyUp( e:KeyboardEvent ):void {
        		vr = 0;
        		thrust = 0;
        		ship.draw( false );
        }
        
        private function onEnterFrame( e:Event ):void {
        		ship.rotation += vr;
        		var angle:Number = ship.rotation * Math.PI / 180;
        		var ax:Number = Math.cos( angle ) * thrust;
        		var ay:Number = Math.sin( angle ) * thrust;
        		vx += ax;
        		vy += ay;
        		ship.x += vx;
        		ship.y += vy;
        }
    }
}

import flash.display.Sprite;

class Ship extends Sprite {
	public function Ship(){
		draw( false );
	}
	
	public function draw( showFlame:Boolean ):void {
		graphics.clear();
		graphics.lineStyle(1, 0x000000);
		graphics.moveTo(10, 0);
		graphics.lineTo(-10, 10);
		graphics.lineTo(-5, 0);
		graphics.lineTo(-10, -10);
		graphics.lineTo(10, 0);
		
		if( showFlame ){
			graphics.moveTo(-7.5, -5);
			graphics.lineTo(-15, 0);
			graphics.lineTo(-7.5, 5);
		}
	}
}