Fixed BresenhamPoints' usage in PlaceOnTriangle.

Author: Antriel

src/actions/PlaceOnTriangle.js

@@ -6,7 +6,7 @@ var BresenhamPoints = require('../geom/line/BresenhamPoints');
  *
  * @function Phaser.Actions.PlaceOnTriangle
  * @since 3.0.0
- * 
+ *
  * @param {array} items - An array of Game Objects. The contents of this array are updated by this Action.
  * @param {Phaser.Geom.Triangle} triangle - [description]
  * @param {number} [stepRate=1] - [description]
@@ -34,8 +34,8 @@ var PlaceOnTriangle = function (items, triangle, stepRate)
         var item = items[i];
         var point = p1[Math.floor(p)];
 
-        item.x = point[0];
-        item.y = point[1];
+        item.x = point.x;
+        item.y = point.y;
 
         p += step;
     }