Grid.as

package  {
	import flash.display.MovieClip;
	
	public class Grid extends MovieClip{
		public static const XSIZE:int = 15;
		public static const YSIZE:int = 15;
		var tilesmc:MovieClip;
		var obstaclemc:MovieClip;

		var gridArray:Array;
		var elementArray:Array;
		
		public function Grid() {
			tilesmc = new MovieClip();
			addChild(tilesmc);
			obstaclemc = new MovieClip();
			addChild(obstaclemc);
			gridArray = new Array();
			elementArray = new Array();
			buildBackground();
			buildGround();
			this.scaleX = this.scaleY = 0.35;			
		}
		
		public function addTile(t:Tile):void {
			tilesmc.addChild(t);
			if (gridArray[t.gy] == undefined) gridArray [t.gy] = new Array();
			gridArray[t.gy][t.gx] = t;
		}
				
		public function getTile(gx:int, gy:int):Tile {
			//trace(gridArray[gy][gx]);
			if(gridArray[gy][gx] == undefined) return null;
			else return gridArray[gy][gx];
		}
		
		public function getTileArray():Array{
			return gridArray;
		}
		
		
		public function buildGround():void {
			for (var gx:int = 0; gx < XSIZE; gx++){
				for(var gy:int = 0 ; gy < YSIZE; gy++){
					var t:Tile = new Tile();
					t.gotoAndStop(1);
					t.init(gx,gy);
					t.grid = this;
					addTile(t);
				}
			}
			
		}
		
		public function buildBackground():void {
			
			for (var gx:int = 0; gx < XSIZE; gx++){
				for(var gy:int = 0 ; gy < YSIZE; gy++){
					var t:TileBackground = new TileBackground();
					t.init(gx,gy);
					t.grid = this;
					tilesmc.addChild(t);
				}
			}
			
		}
		
		public function removeGrid():void{
			for each(var e:Element in elementArray){
				if(e.parent != null) obstaclemc.removeChild(e);
			}
			elementArray = null;
		}
		
		public function resetElementStacks():void{
			for each(var a:Array in gridArray){
				for each (var t:Tile in a){
					t.elementStack = null;
				}
			}
			gridArray = null;
		}
		
	}
	
}