A navigation controller that can switch between view controllers horizontally and vertically

• Setup HeaderView

• Detect HeaderView scrolling direction and send that off to the HeaderViewScrollDelegate

• Implement the transitioning logic at the bottom of the HeaderView file (conforming to HeaderViewScrollDelegate) [Thanks, Milan Nosal!]

• Add interactivity to transitioning logic (NOT WORKING) ** I suspect I've wired things incorrectly **

The file structure is a lot, but easy to understand.

The goal for this is to have a sort of UITabBarController that is interactive and is controlled by swipe gestures. You move between "Sections" (different categories) by vertical movement. This is to facilitate something like switching between multiple game modes (easy, medium, hard). You can then move between different "Pages" by moving horizontally. This is to facilitate movement between different levels in each game mode. (level1, level2, level3)

All the code is mainly encapsulated in HeaderView class. The sections and pages are hardcoded in a 2D-Array called pages. With each large array containing an array of inner pages. It currently has 3 sections with four, three and four pages for each respective section.

There are also a bunch of variables called currSection and lastPage which store which section we're in so it can (hopefully) trigger a transition.

HeaderView implements the HeaderViewScrollDelegate which basically handles all scrolling and has a "vertically" parameter that indicates whether the user is transitioning vertically or horizontally. This is needed as the View Structure that handles this code is fairly convoluted, so this only deals with the scrolling after determining the direction is handled.