package {

	import laya.display.Stage;
	import laya.display.Sprite;
	import laya.events.Event;
	import laya.map.TiledMap;
	import laya.maths.Rectangle;
	import laya.utils.Browser;
	import laya.utils.Handler;
	import laya.utils.Stat;
	import laya.webgl.WebGL;
	import laya.map.MapLayer;
	import laya.map.GridSprite;
	import laya.maths.Point;
	import PathFinding.core.Grid;
	import PathFinding.core.Node;
	import PathFinding.finders.AStarFinder;
	import PathFinding.finders.JPFAlwaysMoveDiagonally;
	import PathFinding.core.Heuristic;

	public class LayaSample {
		
		private var tiledMap:TiledMap;
		private var tileWidth:int;
		private var tileHeight:int;

		public function LayaSample() {
			// 不支持WebGL时自动切换至Canvas
			Laya.init(Browser.width, Browser.height, WebGL);

			Laya.stage.alignV = Stage.ALIGN_MIDDLE;
            Laya.stage.alignH = Stage.ALIGN_CENTER;

            Laya.stage.scaleMode = Stage.SCALE_SHOWALL;

			Stat.show();
			
			createMap();
		}		

		//创建地图
		private function createMap():void
		{
			//创建地图对象
			tiledMap = new TiledMap();
			//创建地图，适当的时候调用destroy销毁地图
			tiledMap.createMap("res/map/map1.json", new Rectangle(0, 0, Browser.width, Browser.height), new Handler(this, completeHandler));
		}

		/**
		 * 地图加载完成的回调
		 */
		private function completeHandler(e:*=null):void
		{

            var blockLayer:MapLayer = this.tiledMap.getLayerByName("Block_Layer");
            
			var mapData:Array = blockLayer._mapData;

            console.log("Map length :" + mapData.length);

            var objLayer:MapLayer = this.tiledMap.getLayerByName("Objects");

            var startObj:GridSprite = this.tiledMap.getLayerObject("Objects", "StartPoint");

            var startPoint:Point = new Laya.Point(startObj.x,startObj.y);

			this.tileWidth = this.tiledMap.tileWidth;
			this.tileHeight = this.tiledMap.tileHeight;

			//start point
			startPoint = tileCoordForPosition(startPoint);
			console.log("StartPoint x:" + startPoint.x + ",y :" + startPoint.y);
			var startScreenPos:Point = new Laya.Point();
            blockLayer.getScreenPositionByTilePos(startPoint.x,startPoint.y,startScreenPos);
            //console.log("StartPoint2 ==== >> X :" + startPoint.x + ",Y:" + startPoint.y);
            var startSprite:Sprite = new Sprite();
            startSprite.graphics.drawCircle(startScreenPos.x,startScreenPos.y,6,"#00ff00");
            Laya.stage.addChild(startSprite);
		
			console.log(tileHeight + ",h:" + tileHeight);
			//target point
  			var targetObj:GridSprite = this.tiledMap.getLayerObject("Objects", "205");
            
            var targetSprite:Sprite = new Sprite();
            targetSprite.graphics.drawCircle(targetObj.x,targetObj.y,6,"#00ff00");
            Laya.stage.addChild(targetSprite);

            var targetPoint:Point = new Laya.Point(targetObj.x,targetObj.y);
            targetPoint = tileCoordForPosition(targetPoint);

			console.log("TargetPoint x:" + targetPoint.x + ",y:" + targetPoint.y);

            var targetScreenPos:Point = new Laya.Point();
            blockLayer.getScreenPositionByTilePos(targetPoint.x,targetPoint.y,targetScreenPos);

            var targetSprite1:Sprite = new Sprite();
            targetSprite1.graphics.drawCircle(targetScreenPos.x,targetScreenPos.y,6,"#00ff00");
            Laya.stage.addChild(targetSprite1);

		    var map_x:int = tiledMap.numColumnsTile;
			var map_y:int = tiledMap.numRowsTile;

			console.log("map_x :" + map_x + ",map_y :" + map_y);

			var mapGrid:Grid = new Grid(map_x,map_y);

			var i:int, j:int,n:int;
			for (i = 0; i < map_y; ++i)
			{
				for (j = 0; j < map_x; ++j)
				{
					var wallk:int = mapData[n];
					var walkable:Boolean = wallk != 1 ? true : false;
					mapGrid.setWalkableAt(j,i,walkable);
					var node:Node = mapGrid.getNodeAt(j,i);
				    console.log("Node x:" + node.x + ",y:" + node.y + ",wallkable:" + walkable);
					++n;
				}
			}
			
			var finder:JPFAlwaysMoveDiagonally = new JPFAlwaysMoveDiagonally({allowDiagonal: true,dontCrossCorners: true,heuristic:Heuristic.manhattan});
			var paths:Array = finder.findPath(startPoint.x,startPoint.y,targetPoint.x,targetPoint.y,mapGrid);
			var pathPath:int = paths.length;
            var pathPoint:Sprite;
			console.log("Path length :" + paths.length);
            for (var index:int = 0;index < pathPath;index ++) {
				var point:Point = new Point(paths[index][0],paths[index][1]);
				console.log("============= :" + paths[index][0] + ",y :" + paths[index][1]);
				
                pathPoint = new Laya.Sprite();
                
                var nodeScreenPos:Point = new Laya.Point();
                blockLayer.getScreenPositionByTilePos(point.x,point.y,nodeScreenPos);
                pathPoint.graphics.drawCircle(nodeScreenPos.x,nodeScreenPos.y,6,"#ff0000");
                Laya.stage.addChild(pathPoint);
                //console.log("X:" + point.x + ",y :" + point.y + ",index :" + index + ",ScreenPosX:" + nodeScreenPos.x + ",ScreenPosY :" +　nodeScreenPos.y);
            }
		}

		public function tileCoordForPosition(point:Point):Point
		{
    		// Size mapSize = tiledMap->getMapSize(); 
    		// Size tileSize = tiledMap->getTileSize();
    		// int x = position.x / tileSize.width;
    		// int y = (mapSize.height*tileSize.height - position.y) / tileSize.height;
    		// return Vec2(x, y);
    		var x = Math.floor(point.x / this.tileWidth);
			var y = Math.floor(point.y / this.tileHeight);
    		//var y =  Math.floor((this.MAP_Y * this.TILE_HEIGHT - point.y) / this.TILE_HEIGHT);
    		return new Laya.Point(x,y);
		}

	}
}