This allows to fully pack InputType, KeyMod and KeyCode/MouseButton/etc in a int32:
- 8 bits (0xFF) - input type
- 8 bits (0xFF) - key mod flags
- 4 bits (0xF) - reserved (potentially for expanding mod flags, if that will be necessary)
- 12 bits (0xFFF) - KeyCode, mouse codes, gamepad buttons, etc.
Purpose:
1. Potentially allow to set keycodes + mods in an integer and assign to an integer variable/property, such as "skip key", instead of using existing "combo keys"
2. In fact, with InputType flags, this makes it possible to assign a mouse or gamepad button to the same variables.
3. Potentially allow to return keycode + mods from Wait* (currently returns only single key).
From upstream 0203e8feb73b96c501ac2439aa3fe3d6c182c8f4
* Changed from -1 - based constants to 0 - based constants;
* These were purely internal values, therefore no API would be harmed;
* Removed necessity of converting from internal mouse button code to script and back all the time;
* On a side note, this fixes a bug where WaitMouse etc were returning incorrect values on mouse skip, because we forgot to convert from internal to script code.
From upstream 471098d239b076c494beb2d554572ccb69372667
From upstream 9d65a68c61d0503e05e2cbe80447af0d619161e4
Note that ScummVM doesn't have a TEXT_INPUT event, so this change and following
ones will be mostly to keep in sync with the standalone codebase even if they're
not directly used
Hubert Maier
Thierry Crozat
Paul Gilbert
Eugene Sandulenko