Changed the Button class so it doesn't require subclassing. Added a visible button to the Help screen. Also moved several classes' constructors to fix compilation errors.
SoundManager is now responsible for loading and storing all common sounds (sounds with their own BOOT chunk). All playSound() calls with a hardcoded channel ID now use the chunk name instead. Also fixed some sound inaccuracies when switching between states.
Made all states (Scene, Credits, Help, etc.) singletons, as well as subclasses of a common State parent with a proper state switching API. Moved the OnPause virtual function from RenderObject to ActionRecord and hooked it into the state switching code. Also got rid of the NancyEngine pointer that got passed around between most classes, and replaced it with several convenience macros. As a result of these changes action records that render to the viewport no longer disappear after opening the menu, and state changes feel snappier.
The menu and help buttons on the sides of the frame are now functional, and the help screen is now also accessible. Also replaced the Frame class with a more general FullScreenImage that will be used across different game states.
Eugene Sandulenko
Orgad Shaneh
fracturehill