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engine.c: factor out two functions from clipmove().

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git-svn-id: https://svn.eduke32.com/eduke32@4382 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2014-03-19 19:53:08 +00:00
parent 2d35d93f38
commit 88ddf6fe1a
1 changed files with 44 additions and 36 deletions
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76
polymer/eduke32/build/src/engine.c
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@ -13286,6 +13286,31 @@ static void addclipline(int32_t dax1, int32_t day1, int32_t dax2, int32_t day2,
}
}
static inline void clipmove_tweak_pos(const vec3_t *pos, int32_t gx, int32_t gy,
int32_t x1, int32_t y1, int32_t x2, int32_t y2,
int32_t *daxptr, int32_t *dayptr)
{
int32_t daz;
if (rintersect(pos->x,pos->y,0, gx,gy,0, x1,y1, x2,y2, daxptr,dayptr,&daz) == -1)
{
*daxptr = pos->x;
*dayptr = pos->y;
}
}
// 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)
{
const sectortype *sec2 = &sector[nextsect];
int32_t daz2 = getflorzofslope(nextsect, dax,day);
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
}
int32_t clipmovex(vec3_t *pos, int16_t *sectnum,
int32_t xvect, int32_t yvect,
int32_t walldist, int32_t ceildist, int32_t flordist, uint32_t cliptype,
@ -13310,7 +13335,6 @@ int32_t clipmove(vec3_t *pos, int16_t *sectnum,
int32_t xvect, int32_t yvect,
int32_t walldist, int32_t ceildist, int32_t flordist, uint32_t cliptype)
{
const sectortype *sec2;
int32_t i, j, k, tempint1, tempint2;
int32_t x1, y1, x2, y2;
int32_t dax, day;
@ -13419,30 +13443,26 @@ int32_t clipmove(vec3_t *pos, int16_t *sectnum,
{
if (wal->nextsector>=0)
{
int32_t basez, daz, daz2;
const sectortype *sec2 = &sector[wal->nextsector];
if (rintersect(pos->x,pos->y,0, gx,gy,0, x1,y1, x2,y2, &dax,&day,&daz) == -1)
dax = pos->x, day = pos->y;
clipmove_tweak_pos(pos, gx,gy, x1,y1, x2,y2, &dax,&day);
daz = getflorzofslope(dasect, dax,day);
daz2 = getflorzofslope(wal->nextsector, dax,day);
basez = getflorzofslope(sectq[clipinfo[curidx].qend], dax,day);
#define CLIPMV_SPR_F_DAZ2 getflorzofslope(wal->nextsector, dax,day)
#define CLIPMV_SPR_F_BASEZ getflorzofslope(sectq[clipinfo[curidx].qend], dax,day)
sec2 = &sector[wal->nextsector];
if ((sec2->floorstat&1) == 0)
// if (dasect==sectq[clipinfo[curidx].qend] || daz2 < daz-(1<<8))
if (daz2-(flordist-1) <= pos->z && pos->z <= basez+(flordist-1))
if (CLIPMV_SPR_F_DAZ2-(flordist-1) <= pos->z)
if (pos->z <= CLIPMV_SPR_F_BASEZ+(flordist-1))
clipyou = 1;
if (clipyou == 0)
{
daz = getceilzofslope(dasect, dax,day);
daz2 = getceilzofslope(wal->nextsector, dax,day);
basez = getceilzofslope(sectq[clipinfo[curidx].qend], dax,day);
#define CLIPMV_SPR_C_DAZ2 getceilzofslope(wal->nextsector, dax,day)
#define CLIPMV_SPR_C_BASEZ getceilzofslope(sectq[clipinfo[curidx].qend], dax,day)
if ((sec2->ceilingstat&1) == 0)
// if (dasect==sectq[clipinfo[curidx].qend] || daz2 > daz+(1<<8))
if (basez-(ceildist-1) <= pos->z && pos->z <= daz2+(ceildist-1))
if (CLIPMV_SPR_C_BASEZ-(ceildist-1) <= pos->z)
if (pos->z <= CLIPMV_SPR_C_DAZ2+(ceildist-1))
clipyou = 1;
}
}
@ -13455,29 +13475,17 @@ int32_t clipmove(vec3_t *pos, int16_t *sectnum,
}
else if (editstatus == 0)
{
int32_t daz, daz2;
if (rintersect(pos->x,pos->y,0,gx,gy,0,x1,y1,x2,y2,&dax,&day,&daz) == -1)
dax = pos->x, day = pos->y;
daz = getflorzofslope(dasect, dax,day);
daz2 = getflorzofslope(wal->nextsector, dax,day);
sec2 = &sector[wal->nextsector];
if (daz2 < daz-(1<<8))
if ((sec2->floorstat&1) == 0)
if (pos->z >= daz2-(flordist-1))
clipyou = 1;
clipmove_tweak_pos(pos, gx,gy, x1,y1, x2,y2, &dax,&day);
clipyou = check_floor_curb(dasect, wal->nextsector, flordist, pos->z, dax, day);
if (clipyou == 0)
{
daz = getceilzofslope(dasect, dax,day);
daz2 = getceilzofslope(wal->nextsector, dax,day);
const sectortype *sec2 = &sector[wal->nextsector];
int32_t daz2 = getceilzofslope(wal->nextsector, dax,day);
if (daz2 > daz+(1<<8))
if ((sec2->ceilingstat&1) == 0)
if (pos->z <= daz2+(ceildist-1))
clipyou = 1;
clipyou = ((sec2->ceilingstat&1) == 0 &&
pos->z <= daz2+(ceildist-1) &&
daz2 > getceilzofslope(dasect, dax,day)+(1<<8));
}
}