1 files changed, 5 insertions, 1 deletions

@@ -40,6 +40,7 @@
         cart = [[Cart alloc] initWithSprite:[CCSprite spriteWithFile:@"cart.png"]];
                 cart.sprite.position = ccp(240, 22);
                 cart.sprite.scale = 2;
+        cart.delegate = self;
                 [self addChild:cart.sprite];
         
         scoreLabel = [CCLabelBMFont labelWithString:@"Score: 0" fntFile:@"helvetica2.fnt"];
@@ -84,13 +85,16 @@
 {
     [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