I don't think this ever comes up because no spells have an sManaCost of 255, however _pMaxManaBase is stored as fixed point, so it should be shifted before use.
But to be honest, I'm not even sure what it is trying to do here. Was sManaCost == 255 supposed to indicate that it was going to use all the player's mana? Why was it cast to a BYTE before using it? Did they intend to limit the manage usage to 255 and just screwed up? I originally saw this logic in Devilution, and found it because the Middle Earth mod had a slight change here, where it used pMana (maybe because they thought it was intended to be a spell that used all the player's mana?) Also, I saw that in 1.07, Ghidra saw `ma` as a byte, not an int as written in Devilution - I wonder if that's where the cast came from? In the ME Mod version, it sees `ma` as an int.
Identified and removed an instance of Direction being used as an argument for a bool parameter
Removed a single-use temporary variable being cast from sprite frame to direction to size_t
Co-authored-by: Anders Jenbo <anders@jenbo.dk>
Fix alignment of WalkSettings array
Use Point wherever possible
Make some functions static (not exhaustive)
Reduce excessive indentation (not exhaustive)
Declare variables as needed (not exhaustive)
Missiles _mimfnum is being used for a lot more then just directions and
can also be a 16 degree direction so can't apply enum verbs and
restricitons to it in most cases. This in turns also affects SetMissDir
and some other functions that have to stay int.