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
Charability trigger hotfix
Apparently when I made `P_RunTriggerSpecial` less than 3 years ago (August 2014) and cleaned up the trigger linedef code, I accidentally inverted the ability check for linedef types 305-307 by mistake, thereby causing the linedefs to activate for anyone EXCEPT those with the ability instead. Whoops.
See merge request !205
Fixes for Each Time and P_IsObjectOnGroundIn
Fixes the issue with Each Time reported here: https://mb.srb2.org/showthread.php?t=42818
Also fixes a separate issue with P_IsObjectOnGroundIn and intangible FOFs (where it determined that standing at the top height of them counted as being on the ground) which was also reproducable via the above bug funnily enough.
See merge request !204
Pwease no kicky
Don't kick Tails! Also, a movement for the WRITESINT8 to prevent modification to buf if the function bails early.
This can go into Master, right? It only matters for the host, and it's explicitly only having a major effect outside of netgames.
See merge request !201
*Add CONS_Printf messages for !netgame checks
*Arg count is checked first regardless of netgame status for both kick and ban, < 2 is checked instead of == 1 just in case these weren't called from console for some stupid reason?
*Moved Command_Kick's buffer vars to within the code that actually does kicking stuff
Lua archive value fix
This fixes some potential problems with archiving mobjinfo_t/state_t data via Lua in netgames (whether as custom mobj/player vars or by NetVars hook). Thanks to LJSonic for pointing this out to me.
See merge request !200
No more jumping springs FOR REAL!
The issue was that because both them and the player had MF_SOLID, the tmfloorz of the spring was getting set to above the player (or vicea versa with tmceilingz), forcing it upwards with them under certain circumstances.
Now, springs only acknowledge the solidity (for purpose of tmfloorz/tmceilingz) of objects they CAN'T launch.
Test with ```<root>/toaster/srb2springsagain.exe``` and ```<root>/DrTapeworm/springtest.wad```, via Mystic's secret server that [SOME jerk](https://www.youtube.com/watch?v=TRjXE_ZMT2s) keeps leaking from.
See merge request !199
Apart from the fact that UnArchiveValue reads UINT16 for both anyway (which alone causes problems), but UINT8 isn't even enough to store the higher end of the object types list and definitely most of the states welp
The issue was that because both them and the player had MF_SOLID, the tmfloorz of the spring was getting set to above the player (or vicea versa with tmceilingz), forcing it upwards with them under certain circumstances.
Now, springs only acknowledge the solidity (for purpose of tmfloorz/tmceilingz) of objects they CAN'T launch.
OpenGL slope FOF lighting fix
This fixes some issues with sloped FOFs that affect lighting in OpenGL (as in, those that cast a shadow or have a colormap). Particularly, they can do strange things to any wall textures adjacent to them, as we've noticed ourselves in levels for 2.2. =P
See merge request !194
Fixes with respect to sector special touching and slopes
Some important stuff.
* SF_TRIGGERSPECIAL_TOUCH now actually works. Previously, it abandoned the loop early if ANY bounding sector didn't have that sector flag, which it likely didn't - only checking one extra sector's worth of FOFs. Also, the teleport handling there is more robust, and actually bails out if you teleport, instead of just awkwardly continuing through the loop.
* SF_TRIGGERSPECIAL_TOUCH now works for each time thinkers, too.
* Fixed a bug with being able to go under lava because P_CheckSolidLava doesn't take slopes into account.
* Also, P_CanRunOnWater supports slopes now too.
* Quicksand supports slopes and reverse gravity now.
* Space Countdown supports slopes now.
Also, an experiment behind a #define which currently isn't turned on:
* UNDER A #define, "SECTORSPECIALSAFTERTHINK", WHICH IS CURRENTLY TURNED OFF, BUT I WILL WANT TO TURN ON IN INTERNAL: Moved sector touch handling to P_PlayerAfterThinker (from P_PlayerThinker before movement). Allows for being able to trigger moving slope sectors that are going down, most specifically lava (didn't matter in RVZS in 2.1 because you could clip through the sides and go underneath the lava, causing damage - a sloped testwad version of that prevented going underneath.) Also fixes one-frame standing on deathpits before you die. Basically means sector triggers effectively happen one tic earlier, since it's after movement.
See merge request !131
Polyobject seg render fix
This fixes both Software and OpenGL renderers so that polyobject segs aren't drawn if the game is drawing the actual subsectors they're from (outside the main level, where the polyobject walls were pre-spawn). They should only appear as part of the polyobject itself in-level.
This means a few glitches with polyobjects are probably fixed: for instance in Software mode, polyobject walls sometimes appear through level boundaries (and make everything above/below vanish, turning into HOM or skybox), if the BSP rendering code happens to find one of the subsectors said segs came from outside the level. I don't think anything similar happens in OpenGL, though I'm sure some unwanted typecasting is happening as a result of attempting to draw the segs. (And it fixes a crash in 2.2 anyway.)
See merge request !195
