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Improve check_floor_curb()

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This should fix several remaining clipping bugs.

git-svn-id: https://svn.eduke32.com/eduke32@7611 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2019-04-19 08:31:54 +00:00 committed by Christoph Oelckers
parent 12eb413f9c
commit 61b3a65e79
1 changed files with 24 additions and 8 deletions
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30
source/build/src/clip.cpp
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@ -778,15 +778,31 @@ static FORCE_INLINE void clipmove_tweak_pos(const vec3_t *pos, int32_t gx, int32
}
// Returns: should clip?
static int32_t check_floor_curb(int32_t dasect, int32_t nextsect, int32_t flordist, int32_t posz,
int32_t dax, int32_t day)
static bool check_floor_curb(int const dasect, int const nextsect, int32_t const flordist, int32_t const posz, vec2_t const &pos)
{
auto const sec = (usectorptr_t)&sector[dasect];
vec2_t closest = { pos.x, pos.y };
int32_t daz = sec->floorz;
if (sec->floorstat & 2)
{
getsectordist(closest, dasect, &closest);
daz = getflorzofslope(dasect, closest.x, closest.y);
}
auto const sec2 = (usectorptr_t)&sector[nextsect];
int32_t const daz2 = getflorzofslope(nextsect, dax, day);
vec2_t closest2 = { pos.x, pos.y };
int32_t daz2 = sec2->floorz;
if (sec2->floorstat & 2)
{
getsectordist(closest2, nextsect, &closest2);
daz2 = getflorzofslope(nextsect, closest2.x, closest2.y);
}
return ((sec2->floorstat&1) == 0 && // parallaxed floor curbs don't clip
posz >= daz2-(flordist-1) && // also account for desired z distance tolerance
daz2 < getflorzofslope(dasect, dax, day)-(1<<8)); // curbs less tall than 256 z units don't clip
daz2 < daz-(1<<8)); // curbs less tall than 256 z units don't clip
}
int32_t clipmovex(vec3_t *pos, int16_t *sectnum,
@ -1121,7 +1137,7 @@ int32_t clipmove(vec3_t * const pos, int16_t * const sectnum, int32_t xvect, int
if (ynw >= 0 && wall[ynw].nextsector >= 0 && (wall[ynw].cstat & dawalclipmask) == 0)
{
clipmove_tweak_pos(pos, diff.x, diff.y, p1.x, p1.y, p2.x, p2.y, &v.x, &v.y);
clipyou = check_floor_curb(dasect, wall[ynw].nextsector, flordist, pos->z, v.x, v.y);
clipyou = check_floor_curb(dasect, wall[ynw].nextsector, flordist, pos->z, v);
}
}
#endif
@ -1129,7 +1145,7 @@ int32_t clipmove(vec3_t * const pos, int16_t * const sectnum, int32_t xvect, int
else if (editstatus == 0)
{
clipmove_tweak_pos(pos, diff.x, diff.y, p1.x, p1.y, p2.x, p2.y, &v.x, &v.y);
clipyou = check_floor_curb(dasect, wal->nextsector, flordist, pos->z, v.x, v.y);
clipyou = check_floor_curb(dasect, wal->nextsector, flordist, pos->z, v);
if (clipyou == 0)
{
@ -1355,7 +1371,7 @@ int32_t clipmove(vec3_t * const pos, int16_t * const sectnum, int32_t xvect, int
int const osectnum = *sectnum;
clipupdatesector(vec, sectnum, rad);
if (*sectnum == osectnum || editstatus || (*sectnum != -1 && !check_floor_curb(osectnum, *sectnum, flordist, pos->z, vec.x, vec.y)))
if (*sectnum == osectnum || editstatus || (*sectnum != -1 && !check_floor_curb(osectnum, *sectnum, flordist, pos->z, vec)))
{
pos->x = vec.x;
pos->y = vec.y;