Changed the readRect() method so it correctly adds one more pixel to the width and height. Fixed a couple of off-by-one errors in the viewport scrolling code. Set the menu and help buttons as transparent to avoid drawing green lines when they're pressed.
Added a \0 to every instance of a char buffer being loaded into a Common::String. Fixed an instance of a large buffer getting repeatedly allocated and deleted inside a for loop. Fixed an instance of a small char buffer being unnecessarily allocated on the heap. Also added a readFilename() convenience function to util.h for reading 8-character filenames found in the data.
Added generic methods for getting the pixel format and transparent color. Also added a method for loading an image directly into a ManagedSurface, which also loads the palette and lets The Vampire Diaries logo display properly.
The resource manager now keeps track of its cif trees and calls to loadImage() and loadData() don't need to specify a cif tree. In order to support The Vampire Diaries, IFFs can now be loaded from their own dedicated .iff file, and the engine doesn't require a cif tree to be loaded on boot.
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.
Fixed a lot of code formatting issues, including switch case statements being indented, some curly braces not being left hanging, if and for statements not being surrounded by newlines, some double spaces, and more.
Added support for the PasswordPuzzle action record, which is used in the computer in the teacher's lounge in nancy1. To enable typing the password in, also added support for all keyboard down events in the Input class.
Rewrote most of the engine using a much more object-oriented approach and using more of ScummVM's common classes. This design deviates quite a lot from the original engine's, but should be more maintainable and extensible in the future.
