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K_SpawnKartMissile: try to step down for stairs

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This commit is contained in:
James R 2023-08-12 15:34:51 -07:00
parent 57a73dd1b0
commit ba77b97aaa
1 changed files with 24 additions and 3 deletions
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27
src/k_kart.c
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@ -4768,14 +4768,15 @@ static mobj_t *K_SpawnKartMissile(mobj_t *source, mobjtype_t type, angle_t an, I
th->momy = FixedMul(finalspeed, FINESINE(an>>ANGLETOFINESHIFT));
th->momz = source->momz;
P_CheckPosition(th, x, y, NULL);
// Get floorz and ceilingz
P_SetOrigin(th, x, y, z);
if (P_MobjWasRemoved(th))
return NULL;
if ((P_IsObjectFlipped(th)
? tm.ceilingz - source->ceilingz
: tm.floorz - source->floorz) > P_GetThingStepUp(th, x, y))
? th->ceilingz - source->ceilingz
: th->floorz - source->floorz) > P_GetThingStepUp(th, x, y))
{
// Assuming this is on the boundary of a sector and
// the wall is too tall... I'm not bothering with
@ -4795,6 +4796,26 @@ static mobj_t *K_SpawnKartMissile(mobj_t *source, mobjtype_t type, angle_t an, I
return NULL;
}
if (P_IsObjectOnGround(source))
{
// If the player is on the ground, make sure the
// missile spawns on the ground, so it smoothly
// travels down stairs.
// FIXME: This needs a more elegant solution because
// if multiple stairs are crossed, the height
// difference in the end is too great (this affects
// slopes too).
const fixed_t tz = P_IsObjectFlipped(th) ? th->ceilingz - th->height : th->floorz;
if (abs(tz - z) <= P_GetThingStepUp(th, x, y))
{
z = tz;
th->z = z;
}
}
if (source->player != NULL)
{
th->cusval = source->player->itemscale;