1 files changed, 4 insertions, 1 deletions

@@ -84,13 +84,16 @@
 {
     [cart tick];
     
+    NSMutableSet* discardedObjects = [NSMutableSet set];
     for (FallingObject* object in objects)
         {
         if ([object tick])
         {
-            [objects removeObject:object];
+            [discardedObjects addObject:object];
         }
     }
+    
+    [objects minusSet:discardedObjects];
 }
 
 - (BOOL)canPause