This makes it significantly easier to save/restore the state of these variables, whenever we need to do so for calling movement functions in the middle of other movement functions. This will also make it easier to move it out of global variable hell if desired later.
Water skipping is enabled for Orbinaut, Jawz, and Ballhog currently. Jawz can water run, as long as their target is on/above the plane they're at -- once their target goes into the water, they'll start skipping.
An optimized error check was put into P_BlockThingsIterator for tmthing, but this meant that anything that was not using or even setting this variable (the supermajority of them) would exit after finding 1 thing in each block.
To keep this error check & keep it optimized, the PIT_ functions were expanded to three options instead of two: BMIT_CONTINUE lets the search continue. If used as the last mobj, it will return true when the iterator finishes. BMIT_ABORT ends the search and forces the iterator to return false.
BMIT_STOP ends the search and forces the iterator to return true.
You can run on water in any case where you would have
slope resistance AND your speed is over 100%. You may run
on water regardless if you're speed is above 200%.
Set a sidedef's midtexture to "TRIPWIRE" to turn that line
into a tripwire.
Players can't drive through a tripwire and will bounce
back at high speed if they're in one of the following
states:
1. Invincibility / Grow
2. Sneakers
3. Flame Shield dash
4. >200% on the speedometer
Hitting a tripwire plays a sound, sends you into hitlag,
then plays another sound when the hitlag is over. The
sounds used depend on whether you can drive through the
tripwire.
See notably the finish line. Basically respawning exactly on a line can let you
cross it twice, if you crossed it before respawning, or NOT cross it, depending
on which direction you drive after landing. So this just respawns very slightly
before the line so you can cross (or not cross) it normally.
Not convinced that the small speed benefit from P_AproxDistance is worth the "aproximate"[sic] results it gives. Let's instead try a define to replace it with FixedHypot. In Lua, the function gives a deprecated warning.
Inspired by the hyperwall fix for vanilla, except for everything. From little testing, actively improves waypoint checks, bumping, speed checks, wall collisions, Jawz targetting, Lightning Shield attacks, so on.
The only way I see this as a potential downgrade is A_Look (and related functions) getting slower, which are barely used in Kart.
This should fix the janky falling off steep slopes and let you cling to them.
Because when falling off a sector the edge of the player must not intersect
the edge of the higher sector, it is trickier than step up. The height
difference at the line must be stored to be useful.
This is for slopes. When moving across a slope the height changes. Therefore
compare the height at the edge where slopes meet so only a wall will block the
player, and not a very steep slope.
