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Fix wall transfer cap for slopes with angles beyond the first quadrant

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Lach 2024-12-31 17:53:28 +11:00
parent 03824651e2
commit 1152c8c41e
1 changed files with 25 additions and 3 deletions
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28
src/p_slopes.c
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@ -1046,15 +1046,37 @@ fixed_t P_GetWallTransferMomZ(mobj_t *mo, pslope_t *slope)
{
vector3_t slopemom, axis;
angle_t ang;
angle_t advanceAng = ANG15;
const boolean upwards = (slope->zangle < ANGLE_180);
if (slope->flags & SL_NOPHYSICS)
return 0;
// If there's physics, time for launching.
// Doesn't kill the vertical momentum as much as P_SlopeLaunch does.
ang = slope->zangle + ANG15*((slope->zangle > 0) ? 1 : -1);
if (ang > ANGLE_90 && ang < ANGLE_180)
ang = ((slope->zangle > 0) ? ANGLE_90 : InvAngle(ANGLE_90)); // hard cap of directly upwards
ang = slope->zangle;
// for the time being, let's pretend the slope inclines upwards only
if (!upwards)
{
ang += ANGLE_180;
}
// angles past 90 degrees need to shrink to get closer to 90 degrees
if (ang > ANGLE_90)
{
advanceAng = InvAngle(advanceAng);
}
// now we set the actual final angle
if ((ang > ANGLE_90) != (ang + advanceAng > ANGLE_90)) // does advancing the angle push it past directly upwards?
{
ang = (upwards ? ANGLE_90 : InvAngle(ANGLE_90)); // hard cap of directly upwards
}
else
{
ang = slope->zangle + advanceAng;
}
slopemom.x = mo->momx;
slopemom.y = mo->momy;