宇宙船！！！

/**
 * Copyright pykgg476 ( http://wonderfl.net/user/pykgg476 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/76Zj
 */

//左右キーで回転。
//上キーでロケット噴射。

package {
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.KeyboardEvent;
	import flash.ui.Keyboard;

	public class ShipSim extends Sprite
	{
		private var vr:Number = 0;
                private var ship:Sprite;
		private var thrust:Number=0;
		private var vx:Number = 0;
		private var vy:Number = 0;
                private var flame:Boolean = false;
		
		public function ShipSim()
		{
			init();
		}
		
		private function init():void{
			ship = new Sprite();
			addChild(ship);
ship.graphics.clear();
			ship. graphics.lineStyle(1,0xffffff);
			ship. graphics.moveTo(10,0);
			ship. graphics.beginFill(0x000000);
			ship. graphics.lineTo(-10,10);
			ship. graphics.lineTo(-5,0);
			ship. graphics.lineTo(-10,-10);
			ship. graphics.lineTo(10,0);
			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(event:KeyboardEvent):void{
			switch(event.keyCode){
				case Keyboard.LEFT:
				vr = -5;
				break;
				
				case Keyboard.RIGHT:
				vr = 5;
				break;
				
				case Keyboard.UP:
				thrust = 0.2;
                                flame = true;

				break;
				
				default:
				break;
				
			}
		}
		
		private function onKeyUp(event:KeyboardEvent):void{
			vr = 0;
			thrust = 0;
			flame = false;
		}
		
		private function onEnterFrame(event:Event):void{
    if(flame == true){
        ship.graphics.clear();
        ship. graphics.lineStyle(1,0xffffff);
			ship.graphics.moveTo(10,0);
			ship.graphics.beginFill(0x000000);
			ship.graphics.lineTo(-10,10);
			ship.graphics.lineTo(-5,0);
			ship.graphics.lineTo(-10,-10);
			ship.graphics.lineTo(10,0);
		        ship.graphics.moveTo(-7.5,-5);
				ship.graphics.lineTo(-15,0);
				ship.graphics.lineTo(-7.5,5);
}else{
        ship.graphics.clear();
     ship. graphics.lineStyle(1,0xffffff);
			ship.graphics.moveTo(10,0);
			ship.graphics.beginFill(0x000000);
			ship.graphics.lineTo(-10,10);
			ship.graphics.lineTo(-5,0);
			ship.graphics.lineTo(-10,-10);
			ship.graphics.lineTo(10,0);
}
    

        
			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;
		}
	}
}