Storing this in the player_struct is pointless and a relic from having to use real hardware palette switches.
With this now just being a translation index being passed to the backend it can be cheaply retrieved right when used and nowhere else.
Also making some changes to how RRRA's psychedelic cactus handles the projection. This fixes issues with occasionally passing a bad matrix.
The main problem here is that there's two data arrays representing an actor - sprite and hittype and the engine only uses indices for reference.
By setting up hittype to contain a sprite reference, the function and iterator interface can be rewritten to use a single pointer instead to represent an actor.
The main objective is to reduce the number of accesses to the global arrays which constitute the biggest refactoring blocker.
* Struct made up of binangle class units.
* Create signed clone of binangle for use with look_ang and rotscrnang.
* Append currently outgoing function names with `2` at the end to avoid conflict.
* Started with the most complicated game first.
* Struct made up of fixedhoriz class units.
* Append currently outgoing function names with `2` at the end to avoid conflict.
* Blood had this right. It makes sense that the horizon be based around as it's easier to work with.
* Removed all associated game math to deduct default horizon of 100 when doing weapon zvel etc, meaning actual horizon can just be used.
* Re-did return to center function to work on the already converted pitch. Return speed should be 1:1 with previous code.
This is needed to extend a few fields that are too narrow - e.g. the texture offset fields have no room for interpolating scrolling textures.
Blood not done yet, will also need to be changed to get rid of the limits.
* For Duke/SW, we continually apply `SB_CENTERVIEW` only if it was previously a toggled action, similar to Blood.
* For SW, we remove two SW-specific bits (`PF_LOCK_HORIZ` and `PF_LOOKING`) that are no longer needed.
* For Duke, we remove `return_to_center` and just use the `SB_CENTERVIEW` action bit as required.
* For `sethorizon()`, feature set and adjustment speeds are an averaged out accumulation across Duke/SW:
** GameTicRate is factored in for adjustment decisions to provide consistency for SW being the faster game.
** Adjustment amounts are half way between Duke/SW.
This unexpectedly turned out a complete rewrite so now it is under my own license.
Also moved the remaining parts of map hack loading into the engine.
Overall I have to say that the feature is not what I expected, it's merely used to fudge the positioning of model sprites and for adding Polymer lights.
This isn't active, though, because load times are so short these days that all this results in is an irritating screen flash before the level starts.
It may be activated later when hires assets are in use.
Fixes#10 (or not...? ;) )
