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.
The sprite lists may still need optimization. Due to different handling between Blood and the core engine they need to be written out completely which is quite wasteful.
* 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.
Apparently this is needed by some hires packs to fudge the sprite offsets.
Fortunately, setting sprite offsets is the only thing this was ever used for so it's relatively uninvasive.
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.
This is for consistency, otherwise sprites with a palette translation would stand out. Also use shade dependent fog density instead of a single global value.
Currently this only has an effect in true color rendering mode.
Another piece of Build licensed code gone, yay!
This will also allow gradual conversion of the DEF parser to our own code, unencumbered by the Build license. :)
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 is mainly a preparation for merging the parser into sc_man, because sc_man does not keep token texts in a static variable.
This commit also fixes a handful of places that were flagged by the stricter conversion rules of FString.
This allowed significant simplification of code data and many of the error checks could also be simplified because this player doesn't really need it all.
Also use nanoseconds to count frame delays, not milliseconds, as milliseconds can cause timing anomalies with common frame rates very easily.
While ultimately this needs to be tossed into the deepest bowels of hell for being one gargantuan piece of bad code, it is still needed and does not really work when placed in a separate source file, due to its endless list of global dependencies.
