* cv_useranalog is now hidden from the menu.
* Directionchar now attempts to face the camera direction when you're standing still, and handles a few other states with more decorum.
* Tailsbot is now slightly more capable of keeping up with Sonic.
* pflags rearranged/adjusted, combining a few non-simulstaneous ones and turning PF_NIGHTSFALL into CR_NIGHTSFALL.
* [unrelated to branch] all ground-impact based abilities now happen more consistently with quicksand.
Makes it easier to change player state with Lua. Wasn't sure how to
tackle changing this for S_PLAY_CLIMB or S_PLAY_CLING, so I left them;
it's a minor ability-specific case anyway
Draw Textures and Flats that have holes in them like a solid polygon so they use the depth buffer and don't need to be sorted
Disable all linear filtering on textures and flats that have holes in them, the linear filtering introduces translucency into the textures where the edges are. Leaving them with either a black border, or causing pixels behind the slightly translucent areas to not be drawn. Doesn't apply to sprites and the HUD as they are always already sorted properly.
Make the Alpha Testing more strict on non-translucent blend modes. This makes it so any transparency below 0.5 is discarded instead. Would make anything that is blended and has holes in it look slightly better, only the HUD and MD2s where the texture has holes are effected currently.
Set TF_TRANSPARENT on flat texture flags when there are holes in the texture.
Minor fix to make sure MD2s always set the right blend mode
- Name each frame either SPR2_**** or SUPER**** (where **** is the 4-character name)
- If the name is 3 characters, '.' is accepted as a substitute for the '_', but a space/absent isn't (for tool-related reasons).
- Adds a big sprite2 index array to all models, even non-player ones. Sorry!
* Made MD2 frame interpoleration only work across the same spriteset (and sprite2set).
* Made MD2 frame interpoleration happen when there's less than a quarter of a second between frames, as opposed to the hardcoded specific animation disabling.
* Fixed sprite2-related typo in dehacked.c.
* Optimisations in a bunch of places, including to static
* Fix some visual errors with text and patches near the edges of the screen in non-standard resolutions.
* Changed the save format a little more, since I had free reign over it.
* Modified the string drawing functions to not awkwardly clip at the very edges of the screen, considering the relevant patch drawing functions avoid out-of-range memory writes.
* Fix a bug where I got emeralds and mapnumbers mixed up when checking for the "there's a tailsbot" flag.
* Consider a save with an invalid skin an invalid save, rather than allowing its continued presence.
