Vissprites are now only clipped against their respective portal's geometry obtained from their BSP run.
Additionally, if a portal is provided, they're clipped to the portal's clip boundaries.
The work on this branch should conclude after a pair of remaining glitches are fixed.
The drawnodes are now fully grouped in separate lists, and then sorted individually. This fixes sorting problems caused by portals belonging to differently perceived scales (skyboxes for example).
Drawsegs and vissprite/drawnode sorting require the viewz, so the viewz is stored for each portal/view, and then restored when needed; without this, the rendering process erroneously sorts the elements, and draws some at wrong positions.
Each shall eventually have its specific vissprites/drawsegs; currently only drawsegs are stored in their correct list, vissprites are stored in the first list as a placeholder.
The idea is to sort each list individually, and then render their masked elements, starting from the last drawnode list.
This retains a non-recursive function calling method while still rendering things in order.
Split portal-related code to its own source files.
Most of the 2-line-specific setup has been moved to the function which adds a 2-line case. The portals should render as they used to so far, anyway.
* Fix that thing where ALL transparent FOF planes were continuously fullbright unless encased in a fog which disables sprite fullbrightness, which was long-hated by many people in the community!
* For backwards compatibility, setting flag 1 in that fog field (which is probably the most common "in-the-wild" usage of this feature) will continue to make objects un-fullbright.
* For situations where you desperately want the behaviour to be enabled, you can apply fog flag 2.
* Change the fadestart and fadeend range in which colormaps are generated.
* The problem HERE was that the darkest light level reached by generated colormaps was actually slightly brighter than the darkest level reached by normal colormaps.
* The typo I fixed does have SOME basis in fact - standard colormap lumps are 34 (33 in 0-indexing) long rather than 32 (31), but whoever wrote this didn't realise that the code for generating them didn't do it DooM style, just bright-to-dark with no extras on the end...
OLD SPECIAL STAGES:
* Spheres in old special stages instead of rings!
* Individual timers in old special stages instead of a global one!
* Old special stages use a variant of the NiGHTS HUD now!
* Special stage damage in old special stages loses 5 seconds of time instead of 10 rings/spheres!
* All damage gained through old special stages is converted to special stage damage! As a consequence, the special spikeball has no need to be special anymore.
* Made emerald gaining function be based on special stage number rather than gained emeralds!
* Consistency with...
NiGHTS SPECIAL STAGES:
* Spheres now flash in bonus time. https://cdn.discordapp.com/attachments/400761370800422922/452590553100713984/srb20032.gif
* Sphere and ring mapthingnums are now less fucked up in 'em. (Rings are 300, same as usual, while Spheres are now 1706 replacing NiGHTS Wings.)
SPECIAL STAGES IN GENERAL:
* useNightsSS is now dead. Each individual special stage is now assessed for NiGHTS-mode behaviour based on maptol & TOL_NIGHTS.
* CRAWLA HONCHO\n CAN NOW BE\n SUPER CRAWLA HONCHO end tally modification now also includes a mini-tutorial on turning super. https://cdn.discordapp.com/attachments/400761370800422922/452844894113759233/srb20036.gif
* SONIC GOT A CHAOS EMERALD? https://cdn.discordapp.com/attachments/400761370800422922/452623869497573386/srb20034.gif
NiGHTS NON-SPECIAL STAGES:
* Colour Chips and Star Chips! Replaces Spheres and Rings of NiGHTS Special Stages.
* Colour Chips turn yellow in bonus time.
* Ideya!
* Its own "drowning" music!
* All of the object types for Dream Hill.
* GIF: https://cdn.discordapp.com/attachments/400761370800422922/452844894113759233/srb20036.gif
RANDOM BS:
* Turn super with the spin button instead of the jump button!
* Followmobj now correctly set with P_SetTarget instead of pointer assignment.
* Emerald hunt uses new sprites!
* Made unlock noise different from emblem gain noise! (It's the CRAWLA HONCHO CAN NOW TURN yadda yadda sound from S3K now.)
* MF2_FRET application and removal.
* Flashing when flag present.
* Bounce player back on successful damaging.
* Add their spawnhealth to the chain.
* Reduce code duplication in P_TouchSpecialThing.
* Play with Crawla Commander a little bit as a test of its power.
* Completely redid how splitscreen works, with eventual support for quads. Squish per-player stuff automatically into the right places! Works in GL, associated flag kills V_SPLITSCREEN.
* Seriously update the lives-drawing function for all gametypes, with strings that replace the lives number whenever it's missing (deprecates SKINNAMEPADDING).
* Improved how the nosshack works, alongside many other refactorings.
* Add a default behaviour to followmobj (just basic A_CapeChase).
* Allow for modifying which character starting a new SP game should start you on, relative to the first valid character. (SOC's "startchar" variable)
* Make MF2_SHADOW transferrable via linkdraw.
* Modify P_GetSkinSprite2's recursion limiter to have zero chance of ever infinitely looping.
- 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.
