1 files changed, 5 insertions, 1 deletions

@@ -129,7 +129,8 @@
     
     if (rightmost <= 480)
     {
-        CCTexture2D* texture = [[CCTexture2D alloc] initWithImage:[factory createLedgeWithWidth:(arc4random() % 10) height:2]];
+        int ledgeWidth = arc4random() % 9 + 1;
+        CCTexture2D* texture = [[CCTexture2D alloc] initWithImage:[factory createLedgeWithWidth:ledgeWidth height:2]];
         CCSprite* ledge = [CCSprite spriteWithTexture:texture];
         ledge.position = ccp(rightmost + rightwidth + ledge.boundingBox.size.width/2+64, 32);
         [self addChild:ledge];
@@ -463,6 +464,9 @@
 
 - (UIImage*)createLedgeWithWidth:(int)width height:(int)height
 {
+    NSAssert(width > 0, @"Ledge width must be greater than 0");
+    NSAssert(height > 0, @"Ledge height must be greater than 0");
+    
     UIGraphicsBeginImageContext(CGSizeMake(width*32, height*32));
     
     for (int y=0; y<height; y++)