
(function(window,document,Laya){
	var __un=Laya.un,__uns=Laya.uns,__static=Laya.static,__class=Laya.class,__getset=Laya.getset,__newvec=Laya.__newvec;

	var Component=laya.components.Component,MeshTerrainSprite3D=laya.d3.core.MeshTerrainSprite3D;
/**
*<code>PathFinding</code> 类用于创建寻路。
*/
//class laya.d3.component.PathFind extends laya.components.Component
var PathFind=(function(_super){
	function PathFind(){
		/**@private */
		this._meshTerrainSprite3D=null;
		/**@private */
		this._finder=null;
		/**@private */
		this._setting=null;
		/**寻路网格。*/
		this.grid=null;
		PathFind.__super.call(this);
	}

	__class(PathFind,'laya.d3.component.PathFind',_super);
	var __proto=PathFind.prototype;
	/**
	*@private
	*初始化载入蒙皮动画组件。
	*@param owner 所属精灵对象。
	*/
	__proto._onAdded=function(){
		if (! (this.owner instanceof laya.d3.core.MeshTerrainSprite3D ))
			throw new Error("PathFinding: The owner must MeshTerrainSprite3D!");
		this._meshTerrainSprite3D=this.owner;
	}

	/**
	*寻找路径。
	*@param startX 开始X。
	*@param startZ 开始Z。
	*@param endX 结束X。
	*@param endZ 结束Z。
	*@return 路径。
	*/
	__proto.findPath=function(startX,startZ,endX,endZ){
		var minX=this._meshTerrainSprite3D.minX;
		var minZ=this._meshTerrainSprite3D.minZ;
		var cellX=this._meshTerrainSprite3D.width / this.grid.width;
		var cellZ=this._meshTerrainSprite3D.depth / this.grid.height;
		var halfCellX=cellX / 2;
		var halfCellZ=cellZ / 2;
		var gridStartX=Math.floor((startX-minX)/ cellX);
		var gridStartZ=Math.floor((startZ-minZ)/ cellZ);
		var gridEndX=Math.floor((endX-minX)/ cellX);
		var gridEndZ=Math.floor((endZ-minZ)/ cellZ);
		var boundWidth=this.grid.width-1;
		var boundHeight=this.grid.height-1;
		(gridStartX > boundWidth)&& (gridStartX=boundWidth);
		(gridStartZ > boundHeight)&& (gridStartZ=boundHeight);
		(gridStartX < 0)&& (gridStartX=0);
		(gridStartZ < 0)&& (gridStartZ=0);
		(gridEndX > boundWidth)&& (gridEndX=boundWidth);
		(gridEndZ > boundHeight)&& (gridEndZ=boundHeight);
		(gridEndX < 0)&& (gridEndX=0);
		(gridEndZ < 0)&& (gridEndZ=0);
		var path=this._finder.findPath(gridStartX,gridStartZ,gridEndX,gridEndZ,this.grid);
		this.grid.reset();
		for (var i=1;i < path.length-1;i++){
			var gridPos=path[i];
			gridPos[0]=gridPos[0] *cellX+halfCellX+minX;
			gridPos[1]=gridPos[1] *cellZ+halfCellZ+minZ;
		}
		if (path.length==1){
			path[0][0]=endX;
			path[0][1]=endX;
			}else if (path.length > 1){
			path[0][0]=startX;
			path[0][1]=startZ;
			path[path.length-1][0]=endX;
			path[path.length-1][1]=endZ;
		}
		return path;
	}

	/**
	*设置寻路设置。
	*@param value 寻路设置。
	*/
	/**
	*获取寻路设置。
	*@return 寻路设置。
	*/
	__getset(0,__proto,'setting',function(){
		return this._setting;
		},function(value){
		(value)&& (this._finder=new PathFinding.finders.AStarFinder(value));
		this._setting=value;
	});

	return PathFind;
})(Component)



})(window,document,Laya);
