Untangles dependencies by splitting up `engine.{h,cpp}` into 3 files:
1. `primitive_render`
2. `ticks` -- only contains `GetAnimationFrame` for now.
3. `GetWidth2` renamed to `CalculateSpriteTileCenterX` and moved to `levels/dun_tile.hpp`.
4 options args are a bit unwieldy, especially when you want
to pass only the first and the last one.
With a struct, there is no need to specify the default values
for the args in between.
Makes cycling the automap type separate from toggling it on/off.
The TAB key can still be used for quick on/off as usual, while
the new Cycle key ("m" by default) can be used to switch between available
display types.
`Get/NextDebugMonster` debug keybind changed to "v" to avoid a conflict.
We want to be able to use unpacked MPQs on low-end platforms
(PS2/rg99/etc).
This is tricky on case-sensitive filesystems. Avoids case issues by
lowercasing all paths in the code (then we'll just need lowercased
listfiles).
Rather than using the Windows-like `MAX_PATH`, what we really want is 2
things:
1. Maximum path of a file in an MPQ. This is now `MaxMpqPathSize`.
2. Max size for the known monster paths. This is now 64 for sounds and
TRNs, which is more than enough (picked arbitrarily).
Both player and monster walking functions are not named WalkNorthwards, WalkSouthwards and WalkSideways.
Also renames the PLT_MODE enum to follow the same pattern and removes the comments that are now unnecessary