Recalculate faces: make this reset faces on non-colliding tiles

This handles edge cases where things like copy can make a tile become non-colliding w/o reseting faces

v3/src/gameobjects/tilemap/Tile.js

@@ -286,6 +286,21 @@ var Tile = new Class({
         return this;
     },
 
+    /**
+     * Reset faces.
+     *
+     * @returns {this}
+     */
+    resetFaces: function ()
+    {
+        this.faceTop = false;
+        this.faceBottom = false;
+        this.faceLeft = false;
+        this.faceRight = false;
+
+        return this;
+    },
+
     /**
      * Sets the collision flags for each side of this tile and updates the interesting faces list.
      *

v3/src/gameobjects/tilemap/components/CalculateFacesWithin.js

@@ -25,7 +25,9 @@ var CalculateFacesWithin = function (tileX, tileY, width, height, layer)
     {
         var tile = tiles[i];
 
-        if (tile && tile.collides)
+        if (tile)
+        {
+            if (tile.collides)
             {
                 above = GetTileAt(tile.x, tile.y - 1, true, layer);
                 below = GetTileAt(tile.x, tile.y + 1, true, layer);
@@ -37,6 +39,11 @@ var CalculateFacesWithin = function (tileX, tileY, width, height, layer)
                 tile.faceLeft = (left && left.collides) ? false : true;
                 tile.faceRight = (right && right.collides) ? false : true;
             }
+            else
+            {
+                tile.resetFaces();
+            }
+        }
     }
 };
 

v3/src/gameobjects/tilemap/components/RecalculateFacesAt.js

@@ -52,6 +52,8 @@ var RecalculateFacesAt = function (tileX, tileY, layer)
         right.faceLeft = !tileCollides;
     }
 
+    if (tile && !tile.collides) { tile.resetFaces(); }
+
     return tile;
 };