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Make textures skew according to slope (midtextures not fixed yet)

This commit is contained in:
RedEnchilada 2015-05-03 15:47:40 -05:00
parent 79fedf91a0
commit c66bb1c330
1 changed files with 67 additions and 1 deletions
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68
src/r_segs.c
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@ -52,6 +52,7 @@ static fixed_t rw_midtexturemid, rw_toptexturemid, rw_bottomtexturemid;
static INT32 worldtop, worldbottom, worldhigh, worldlow;
#ifdef ESLOPE
static INT32 worldtopslope, worldbottomslope, worldhighslope, worldlowslope; // worldtop/bottom at end of slope
static fixed_t rw_toptextureslide, rw_midtextureslide, rw_bottomtextureslide; // Defines how to adjust Y offsets along the wall for slopes
#endif
static fixed_t pixhigh, pixlow, pixhighstep, pixlowstep;
static fixed_t topfrac, topstep;
@ -1064,6 +1065,7 @@ static void R_RenderSegLoop (void)
INT32 mid;
fixed_t texturecolumn = 0;
fixed_t oldtexturecolumn = -1;
INT32 top;
INT32 bottom;
INT32 i;
@ -1200,6 +1202,16 @@ static void R_RenderSegLoop (void)
// calculate texture offset
angle = (rw_centerangle + xtoviewangle[rw_x])>>ANGLETOFINESHIFT;
texturecolumn = rw_offset-FixedMul(FINETANGENT(angle),rw_distance);
#ifdef ESLOPE
if (oldtexturecolumn != -1) {
rw_bottomtexturemid += FixedMul(rw_bottomtextureslide, oldtexturecolumn-texturecolumn);
rw_midtexturemid += FixedMul(rw_midtextureslide, oldtexturecolumn-texturecolumn);
rw_toptexturemid += FixedMul(rw_toptextureslide, oldtexturecolumn-texturecolumn);
}
oldtexturecolumn = texturecolumn;
#endif
texturecolumn >>= FRACBITS;
// texturecolumn and lighting are independent of wall tiers
@ -1407,6 +1419,7 @@ void R_StoreWallRange(INT32 start, INT32 stop)
r_lightlist_t *rlight;
#ifdef ESLOPE
vertex_t segleft, segright;
fixed_t ceilingfrontslide, floorfrontslide, ceilingbackslide, floorbackslide;
#endif
static size_t maxdrawsegs = 0;
@ -1605,6 +1618,28 @@ void R_StoreWallRange(INT32 start, INT32 stop)
}
}
#ifdef ESLOPE
// Set up texture Y offset slides for sloped walls
rw_toptextureslide = rw_midtextureslide = rw_bottomtextureslide = 0;
ceilingfrontslide = floorfrontslide = ceilingbackslide = floorbackslide = 0;
{
angle_t lineangle = R_PointToAngle2(curline->v1->x, curline->v1->y, curline->v2->x, curline->v2->y);
if (frontsector->f_slope)
floorfrontslide = FixedMul(frontsector->f_slope->zdelta, FINECOSINE((lineangle-frontsector->f_slope->xydirection)>>ANGLETOFINESHIFT));
if (frontsector->c_slope)
ceilingfrontslide = FixedMul(frontsector->c_slope->zdelta, FINECOSINE((lineangle-frontsector->c_slope->xydirection)>>ANGLETOFINESHIFT));
if (backsector && backsector->f_slope)
floorbackslide = FixedMul(backsector->f_slope->zdelta, FINECOSINE((lineangle-backsector->f_slope->xydirection)>>ANGLETOFINESHIFT));
if (backsector && backsector->c_slope)
ceilingbackslide = FixedMul(backsector->c_slope->zdelta, FINECOSINE((lineangle-backsector->c_slope->xydirection)>>ANGLETOFINESHIFT));
}
#endif
if (!backsector)
{
// single sided line
@ -1614,14 +1649,22 @@ void R_StoreWallRange(INT32 start, INT32 stop)
if (linedef->flags & ML_DONTPEGBOTTOM)
{
#ifdef ESLOPE
rw_midtexturemid = worldbottom + textureheight[sidedef->midtexture];
rw_midtextureslide = floorfrontslide;
#else
vtop = frontsector->floorheight + textureheight[sidedef->midtexture];
// bottom of texture at bottom
rw_midtexturemid = vtop - viewz;
#endif
}
else
{
// top of texture at top
rw_midtexturemid = worldtop;
#ifdef ESLOPE
rw_midtextureslide = ceilingfrontslide;
#endif
}
rw_midtexturemid += sidedef->rowoffset;
@ -1847,12 +1890,20 @@ void R_StoreWallRange(INT32 start, INT32 stop)
{
// top of texture at top
rw_toptexturemid = worldtop;
#ifdef ESLOPE
rw_toptextureslide = ceilingfrontslide;
#endif
}
else
{
#ifdef ESLOPE
rw_toptexturemid = worldhigh + textureheight[def->toptexture];
rw_toptextureslide = ceilingbackslide;
#else
vtop = backsector->ceilingheight + textureheight[def->toptexture];
// bottom of texture
rw_toptexturemid = vtop - viewz;
#endif
}
}
else
@ -1863,12 +1914,20 @@ void R_StoreWallRange(INT32 start, INT32 stop)
{
// top of texture at top
rw_toptexturemid = worldtop;
#ifdef ESLOPE
rw_toptextureslide = ceilingfrontslide;
#endif
}
else
{
#ifdef ESLOPE
rw_toptexturemid = worldhigh + textureheight[sidedef->toptexture];
rw_toptextureslide = ceilingbackslide;
#else
vtop = backsector->ceilingheight + textureheight[sidedef->toptexture];
// bottom of texture
rw_toptexturemid = vtop - viewz;
#endif
}
}
}
@ -1887,9 +1946,16 @@ void R_StoreWallRange(INT32 start, INT32 stop)
// bottom of texture at bottom
// top of texture at top
rw_bottomtexturemid = worldtop;
#ifdef ESLOPE
rw_bottomtextureslide = floorfrontslide;
#endif
}
else // top of texture at top
else { // top of texture at top
rw_bottomtexturemid = worldlow;
#ifdef ESLOPE
rw_bottomtextureslide = floorbackslide;
#endif
}
}
rw_toptexturemid += sidedef->rowoffset;