Added scrolling to level selection screen

Using http://www.xcombinator.com/2010/09/08/a-paging-uiscrollview-in-cocos2d-with-previews/ as a base, I was able to implement a paging scroller for the level selection screen so players can swipe through available levels and choose one to play.

At this point, the level selection screen is practically done--the only other thing I want to add is a UIPageControl to interact with the scrolling and give the player an indication of how many levels there are.

Refs #207

1 files changed, 37 insertions, 0 deletions

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+/*
+ *  NMPanelMenu.m
+ *  shapes
+ *
+ *  Created by Nate Murray on 7/29/10.
+ *  Copyright 2010 YetiApps. All rights reserved.
+ *
+ */
+
+#import "NMPanelMenu.h"
+
+@implementation NMPanelMenu
+
+-(CCMenuItem *) itemForTouch: (UITouch *) touch
+{
+    CGPoint touchLocation = [touch locationInView: [[touch view] superview]];
+    touchLocation = [[CCDirector sharedDirector] convertToGL: touchLocation];
+
+    CCMenuItem* item;
+    CCARRAY_FOREACH(children_, item){
+        // ignore invisible and disabled items: issue #779, #866
+        if ( [item visible] && [item isEnabled] ) {
+
+            CGPoint local = [item convertToNodeSpace:touchLocation];
+
+            CGRect r = [item rect];
+            r.origin = CGPointZero;
+
+            if( CGRectContainsPoint( r, local ) ) {
+                return item;
+            }
+        }
+    }
+    return nil;
+}
+
+@end