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Classic: on desktops, handle abs. z diff. of floor/ceiling to camera >= 1<<24.

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git-svn-id: https://svn.eduke32.com/eduke32@4960 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2015-02-07 17:29:10 +00:00
parent d95aaa5da5
commit c3ddf08fd1
1 changed files with 42 additions and 14 deletions
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50
polymer/eduke32/build/src/engine.c
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@ -55,13 +55,22 @@ L_State g_engState;
#define CACHEAGETIME 16
//////////
// Compilation switches for optional/extended engine features
#if !defined(__arm__) && !defined(GEKKO)
# define HIGH_PRECISION_SPRITE
#endif
#if !defined EDUKE32_TOUCH_DEVICES && !defined GEKKO && !defined __OPENDINGUX__
// Handle absolute z difference of floor/ceiling to camera >= 1<<24.
# define CLASSIC_Z_DIFF_64
#endif
#define MULTI_COLUMN_VLINE
//#define DEBUG_TILESIZY_512
//#define DEBUG_TILEOFFSETS
//////////
#ifdef LUNATIC
# if !defined DEBUG_MAIN_ARRAYS
@ -3361,14 +3370,32 @@ static inline void wallmosts_finish(int16_t *mostbuf, int32_t z1, int32_t z2,
mostbuf[ix2] = ydimen;
}
#ifdef CLASSIC_Z_DIFF_64
typedef int64_t zint_t;
static inline zint_t mulscale20z(int32_t a, int32_t d)
{
return ((zint_t)a * d)>>20;
}
static inline zint_t dmulscale24z(int32_t a, int32_t d, int32_t S, int32_t D)
{
return (((zint_t)a * d) + ((zint_t)S * D)) >> 24;
}
#else
typedef int32_t zint_t;
# define mulscale20z mulscale20
# define dmulscale24z dmulscale24
#endif
//
// owallmost (internal)
//
static int32_t owallmost(int16_t *mostbuf, int32_t w, int32_t z)
static int32_t owallmost(int16_t *mostbuf, int32_t w, zint_t z)
{
z <<= 7;
const int32_t s1 = mulscale20(globaluclip,yb1[w]), s2 = mulscale20(globaluclip,yb2[w]);
const int32_t s3 = mulscale20(globaldclip,yb1[w]), s4 = mulscale20(globaldclip,yb2[w]);
const zint_t s1 = mulscale20z(globaluclip,yb1[w]), s2 = mulscale20z(globaluclip,yb2[w]);
const zint_t s3 = mulscale20z(globaldclip,yb1[w]), s4 = mulscale20z(globaldclip,yb2[w]);
const int32_t bad = (z<s1)+((z<s2)<<1)+((z>s3)<<2)+((z>s4)<<3);
int32_t ix1 = xb1[w], iy1 = yb1[w];
@ -3433,7 +3460,7 @@ static int32_t owallmost(int16_t *mostbuf, int32_t w, int32_t z)
return bad;
}
static inline int32_t wallmost_getz(int32_t fw, int32_t t, int32_t z,
static inline zint_t wallmost_getz(int32_t fw, int32_t t, zint_t z,
int32_t x1, int32_t y1, int32_t x2, int32_t y2,
int32_t xv, int32_t yv, int32_t dx, int32_t dy)
{
@ -3444,8 +3471,8 @@ static inline int32_t wallmost_getz(int32_t fw, int32_t t, int32_t z,
if (klabs(j) > klabs(i>>3))
i = divscale28(i,j);
return dmulscale24(dx*t, mulscale20(y2,i)+((y1-wall[fw].y)<<8),
-dy*t, mulscale20(x2,i)+((x1-wall[fw].x)<<8)) + ((z-globalposz)<<7);
return dmulscale24z(dx*t, mulscale20z(y2,i)+((y1-wall[fw].y)<<8),
-dy*t, mulscale20z(x2,i)+((x1-wall[fw].x)<<8)) + ((z-globalposz)<<7);
}
//
@ -3497,23 +3524,22 @@ static int32_t wallmost(int16_t *mostbuf, int32_t w, int32_t sectnum, char dasta
{ xv = cosglobalang+sinviewingrangeglobalang; yv = singlobalang-cosviewingrangeglobalang; }
else
{ xv = x1-globalposx; yv = y1-globalposy; }
int32_t z1 = wallmost_getz(w1, t, z, x1, y1, x2, y2, xv, yv, dx, dy);
zint_t z1 = wallmost_getz(w1, t, z, x1, y1, x2, y2, xv, yv, dx, dy);
if (xb2[w] == xdimen-1)
{ xv = cosglobalang-sinviewingrangeglobalang; yv = singlobalang+cosviewingrangeglobalang; }
else
{ xv = (x2+x1)-globalposx; yv = (y2+y1)-globalposy; }
int32_t z2 = wallmost_getz(w1, t, z, x1, y1, x2, y2, xv, yv, dx, dy);
zint_t z2 = wallmost_getz(w1, t, z, x1, y1, x2, y2, xv, yv, dx, dy);
const int32_t s1 = mulscale20(globaluclip,yb1[w]), s2 = mulscale20(globaluclip,yb2[w]);
const int32_t s3 = mulscale20(globaldclip,yb1[w]), s4 = mulscale20(globaldclip,yb2[w]);
const zint_t s1 = mulscale20(globaluclip,yb1[w]), s2 = mulscale20(globaluclip,yb2[w]);
const zint_t s3 = mulscale20(globaldclip,yb1[w]), s4 = mulscale20(globaldclip,yb2[w]);
const int32_t bad = (z1<s1)+((z2<s2)<<1)+((z1>s3)<<2)+((z2>s4)<<3);
int32_t ix1 = xb1[w], ix2 = xb2[w];
int32_t iy1 = yb1[w], iy2 = yb2[w];
const int32_t oz1 = z1, oz2 = z2;
if ((bad&3) == 3)
{
@ -3529,6 +3555,8 @@ static int32_t wallmost(int16_t *mostbuf, int32_t w, int32_t sectnum, char dasta
return bad;
}
const int32_t oz1 = z1, oz2 = z2;
if (bad&3)
{
//inty = intz / (globaluclip>>16)