package common 
{
	import de.polygonal.core.ObjectPool;
	import flash.display.BitmapData;
	import flash.geom.Point
	import flash.geom.Rectangle;
	import flash.geom.Vector3D;
	/**
	 * ...
	 * @author Vernon
	 */
	public class MeteorSpawnFactory
	{
		private var spawnPool:ObjectPool;
		
		public var spawns:Vector.<MeteorSpawn>;
		public var canvas:BitmapData
		private var point:Point;
		private static var _instance:MeteorSpawnFactory;
		public var killAtBounds:Boolean=false;
		
		
		public var boundingRectangle:Rectangle;
			
			public function cleanUp():void {
				canvas = null;
				var i:int;
				for (i = spawns.length-1; i >= 0 ; i--) {
					var t:MeteorSpawn = spawns[i];
					t.cleanUp();
					 t = null;
					}
				spawns = null;
				spawnPool.initialze('cleanUp',null);
				spawnPool.deconstruct();
				spawnPool = null;
				boundingRectangle = null;
				}
				
			public static function getInstance():MeteorSpawnFactory {
				
				if (_instance == null)
					{
					_instance = new MeteorSpawnFactory();
					_instance.spawnPool = new ObjectPool(true);
					_instance.spawnPool.allocate(MeteorSpawn, 100);
					_instance.spawns = new Vector.<MeteorSpawn>();
					_instance.point = new Point() ;
					_instance.boundingRectangle = new Rectangle(0,0,450,450);	
					MeteorSpawn.preCache();
					}
				
				return _instance;
				}
				
				
				
				
		public function step():void {
			var len:int = spawns.length;
		 
		
				for (var i:int = len -1; i >= 0 ; i --) 
				{
				var mS:MeteorSpawn;
				mS = spawns[i];
				point.x = mS.myX;
				point.y = mS.myY;
					
				

				if (mS.myX > boundingRectangle.width){
						mS.myX = boundingRectangle.x - mS.bdRadius;
						if (killAtBounds)
							mS.isAlive = false;
					}
					else if (mS.myX  < -mS.bdRadius){	
						mS.myX  = boundingRectangle.width - mS.bdRadius;
						if (killAtBounds)
							mS.isAlive = false;
					}
					if (mS.myY > boundingRectangle.height){
						mS.myY = boundingRectangle.y- mS.bdRadius;
						if (killAtBounds)
							mS.isAlive = false;
						}
				else if (mS.myY  < -mS.bdRadius){
							mS.myY = boundingRectangle.height -mS.bdRadius;
							if (killAtBounds)
								mS.isAlive = false;
						}
						
				if (mS.isAlive == false)
					{
					spawnPool.object = spawns.splice(i, 1)[0] ;	
					}
				else{
					mS.update();
					canvas.copyPixels(mS.bd, mS.bd.rect, point);
				}	
						
			}
					
				 
		}
				
				public function addSpawn(x:Number, y:Number,velocityVec:Vector3D=null, speedMultiplier:int=1):void {
					var sp:MeteorSpawn = spawnPool.object;
					sp.init(x, y,velocityVec,speedMultiplier);
					spawns.push(sp);
					
					}	
				 

					
					
			
			
		}
		
	}