fix tests

1 files changed, 9 insertions, 4 deletions

diff --git a/public/assets/javascripts/rectangles/engine/rooms/grouper.js b/public/assets/javascripts/rectangles/engine/rooms/grouper.js
index cde9fbb..2ec1ee7 100644
--- a/public/assets/javascripts/rectangles/engine/rooms/grouper.js
+++ b/public/assets/javascripts/rectangles/engine/rooms/grouper.js
@@ -83,7 +83,10 @@
 				
 				collection.sort( useX ? sort.compare_zx : sort.compare_xz )
 				collection.forEach(function(mx){
-					if (last_mx && last_mx.rect.eq(mx.rect)) {
+				  if (mx.culled) {
+				    return
+				  }
+					if (last_mx && mx && last_mx.rect.eq(mx.rect)) {
 					  // culls half-walls
 						if (last_mx.rect.id == mx.rect.id) {
 							last_mx.height += mx.height/2
@@ -91,9 +94,11 @@
 							last_mx.face.y.b += mx.height/2
 						}
 						last_mx.side = side
-						mx.culled = true
-						mx.destroy()
-						scene.remove(mx)
+						if (! mx.culled) {
+              scene.remove(mx)
+              mx.destroy()
+              mx.culled = true
+            }
 						return
 					}
 					widthVec = mx.rect[useX ? 'x' : 'y'].clone()