// some _root level variables
_root.hits = 0;
_root.direction = 0;
_root.running = false;

// create a background
var grad:Gradient = new Gradient();
grad.fill(_root,0,0,550,400);

_root.createEmptyMovieClip("avatar", 3);
with(_root.avatar){
	onLoad = function(){
			_root.avatar.yOffset = 100;
			x = -15;
	};
	onEnterFrame = function(){
		if(x > -15) {     
	       x -= .2;
		   y=(x*x);
	       _y =  y + yOffset;
		}
    };
	_x = 400;
	_y = 325;
}
var grid:Grid = new Grid();

_root.createEmptyMovieClip("projectile",2);
_root.projectile._visible = false;
_root.projectile.onEnterFrame = function(){
	with(_root.projectile){
       if(_x >-20 && _x < 550)  _x += (direction*10);   
       else  	                _visible = false;
	   for(var i=0;i<aliens.length;i++){
	      if(_root.bullet.hit(_x,_y,_root.aliens[i],30)){
		  	 _x = _root.aliens[i]._x;
			 _y = _root.aliens[i]._y;
		     _root.aliens[i]._visible = false;
		     _root.aliens[i]._x = Math.floor((Math.random()*200)/50)*50+10;
		     _root.aliens[i]._y = Math.floor((Math.random()*200)/50)*50+100;
		     _root.bullet.explode(_root.projectile);
	      }else if(_root.aliens[i]._visible == false){
		     _root.score.text = ++_root.hits;
			 _x = -30;
		     _visible = false;
		     _root.aliens[i]._visible = true;
	      }	
		  if(_root.bullet.hit(_root.avatar._x,_root.avatar._y,_root.aliens[i],50)){
			  _root.score.text = "GAME OVER";
			  _root.avatar._x++;
			  _root.running = false;
			  _root.bullet.explode(_root.avatar);
		  }
	   }
	}
};

var bullet:Projectile = new Projectile();
var shape:Shape = new Shape();
var size = 15;
aliens = new Array();
for(var i=0;i<10;i++){
     tmp       = _root.createEmptyMovieClip("alien"+i,4+i);
	 tmp._x    = Math.floor((Math.random()*200)/50)*50+10;
	 tmp._y    = Math.floor((Math.random()*200)/50)*50+100;
	 aliens[i] = tmp;
     shape.drawNgon(tmp,9,size,size,size,0x80ff10,0xff5533,2);
}