diff --git a/game.js b/game.js
index d3986a8..2e00591 100644
--- a/game.js
+++ b/game.js
@@ -100,8 +100,8 @@ function Game(id,options){
 	};
 	//画布坐标转地图坐标
 	Map.prototype.position2coord = function(x,y){
-		var fx = (x-this.x)%this.size-this.size/2;
-		var fy = (y-this.y)%this.size-this.size/2;
+		var fx = Math.abs(x-this.x)%this.size-this.size/2;
+		var fy = Math.abs(y-this.y)%this.size-this.size/2;
 		return {
 			x:Math.floor((x-this.x)/this.size),
 			y:Math.floor((y-this.y)/this.size),
@@ -139,7 +139,7 @@ function Game(id,options){
 			var new_list = [];
 			var next = function(from,to){
 				if(!finded){
-					var value = typeof options.map[to.y][to.x] !='undefined'?options.map[to.y][to.x]:-1;
+					var value = options.map[to.y]&&typeof options.map[to.y][to.x] !='undefined'?options.map[to.y][to.x]:-1;
 					if(value!=1){	//当前点是否可以走
 						if(value==-1){
 							to.x = (to.x+x_length)%x_length;
diff --git a/index.js b/index.js
index 7eeae3a..7ea7783 100644
--- a/index.js
+++ b/index.js
@@ -290,13 +290,13 @@
 						});
 						if(this.path.length){
 							this.vector = this.path[0];
-							if(this.vector.change){ //是否转变方向
-								this.coord.x = this.vector.x;
-								this.coord.y = this.vector.y;
-								var pos = map.coord2position(this.coord.x,this.coord.y);
-								this.x = pos.x;
-								this.y = pos.y;
-							}
+						}
+						if(this.vector.change){ //是否转变方向
+							this.coord.x = this.vector.x;
+							this.coord.y = this.vector.y;
+							var pos = map.coord2position(this.coord.x,this.coord.y);
+							this.x = pos.x;
+							this.y = pos.y;
 						}
 						if(this.vector.x>this.coord.x){
 							this.orientation = 0;