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TROR/classic: same fix as r2739, intersecting case.

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git-svn-id: https://svn.eduke32.com/eduke32@2741 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2012-06-06 22:03:32 +00:00
parent cf429d0e76
commit 9e5696a486
1 changed files with 54 additions and 28 deletions
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82
polymer/eduke32/build/src/engine.c
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@ -4517,6 +4517,52 @@ static void setup_globals_wall2(const walltype *wal, uint8_t secvisibility, int3
globalyscale = -globalyscale, globalzd = -globalzd;
}
/* _______________
* X umost #######
* ###### ________
* ______/
* X dwall
*
* ________
* X uwall \______
* ///////////////
* _______________
* X dmost
*/
#ifdef YAX_ENABLE
// returns: should dmost be raised when drawing a "ceiling wall"?
static int32_t should_clip_cwall(int32_t x1, int32_t x2)
{
int32_t x;
if (yax_globallev <= YAX_MAXDRAWS)
return 1;
for (x=x1; x<=x2; x++)
if (dwall[x] < dmost[x] || uplc[x] < dmost[x])
return 1;
return 0;
}
// returns: should umost be lowered when drawing a "floor wall"?
static int32_t should_clip_fwall(int32_t x1, int32_t x2)
{
int32_t x;
if (yax_globallev >= YAX_MAXDRAWS)
return 1;
for (x=x1; x<=x2; x++)
if (uwall[x] > umost[x] || dplc[x] > umost[x])
return 1;
return 0;
}
#endif
//
// drawalls (internal)
//
@ -4745,19 +4791,7 @@ static void drawalls(int32_t bunch)
if ((cz[2] >= cz[0]) && (cz[3] >= cz[1]))
{
#ifdef YAX_ENABLE
int32_t doclip = (yax_globallev <= YAX_MAXDRAWS);
if (!doclip)
{
for (x=x1; x<=x2; x++)
if (dwall[x] < dmost[x] || uplc[x] < dmost[x])
{
doclip = 1;
break;
}
}
if (doclip)
if (should_clip_cwall(x1, x2))
#endif
for (x=x1; x<=x2; x++)
if (dwall[x] > umost[x])
@ -4769,7 +4803,9 @@ static void drawalls(int32_t bunch)
}
else
{
// TROR: TODO: same doclip tweak as above?
#ifdef YAX_ENABLE
if (should_clip_cwall(x1, x2))
#endif
for (x=x1; x<=x2; x++)
if (umost[x] <= dmost[x])
{
@ -4844,19 +4880,7 @@ static void drawalls(int32_t bunch)
if ((fz[2] <= fz[0]) && (fz[3] <= fz[1]))
{
#ifdef YAX_ENABLE
int32_t doclip = (yax_globallev >= YAX_MAXDRAWS);
if (!doclip)
{
for (x=x1; x<=x2; x++)
if (uwall[x] > umost[x] || dplc[x] > umost[x])
{
doclip = 1;
break;
}
}
if (doclip)
if (should_clip_fwall(x1, x2))
#endif
for (x=x1; x<=x2; x++)
if (uwall[x] < dmost[x])
@ -4868,7 +4892,9 @@ static void drawalls(int32_t bunch)
}
else
{
// TROR: TODO: same doclip tweak as above?
#ifdef YAX_ENABLE
if (should_clip_fwall(x1, x2))
#endif
for (x=x1; x<=x2; x++)
if (umost[x] <= dmost[x])
{