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Merge branch 'horizon_lines' into 'master'

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Horizon lines

Horizon lines for software mode! Place a Linedef type 41 somewhere on a one-sided linedef and it'll do fancy rendering hacks to draw the adjacent floor/ceiling to the "horizon". One small thing to sort out when I remember to do so, but this is good enough for merge already.

See merge request !44
This commit is contained in:
Monster Iestyn 2016-10-07 17:28:25 -04:00
parent 9160c8aeb4 ead52294ab
commit c5f51ded32
1 changed files with 17 additions and 12 deletions
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29
src/r_segs.c
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@ -2622,22 +2622,27 @@ void R_StoreWallRange(INT32 start, INT32 stop)
worldbottomslope >>= 4; worldbottomslope >>= 4;
#endif #endif
topstep = -FixedMul (rw_scalestep, worldtop); if (linedef->special == 41) { // HORIZON LINES
topfrac = (centeryfrac>>4) - FixedMul (worldtop, rw_scale); topstep = bottomstep = 0;
topfrac = bottomfrac = (centeryfrac>>4);
} else {
topstep = -FixedMul (rw_scalestep, worldtop);
topfrac = (centeryfrac>>4) - FixedMul (worldtop, rw_scale);
bottomstep = -FixedMul (rw_scalestep,worldbottom); bottomstep = -FixedMul (rw_scalestep,worldbottom);
bottomfrac = (centeryfrac>>4) - FixedMul (worldbottom, rw_scale); bottomfrac = (centeryfrac>>4) - FixedMul (worldbottom, rw_scale);
#ifdef ESLOPE #ifdef ESLOPE
if (frontsector->c_slope) { if (frontsector->c_slope) {
fixed_t topfracend = (centeryfrac>>4) - FixedMul (worldtopslope, ds_p->scale2); fixed_t topfracend = (centeryfrac>>4) - FixedMul (worldtopslope, ds_p->scale2);
topstep = (topfracend-topfrac)/(range); topstep = (topfracend-topfrac)/(range);
} }
if (frontsector->f_slope) { if (frontsector->f_slope) {
fixed_t bottomfracend = (centeryfrac>>4) - FixedMul (worldbottomslope, ds_p->scale2); fixed_t bottomfracend = (centeryfrac>>4) - FixedMul (worldbottomslope, ds_p->scale2);
bottomstep = (bottomfracend-bottomfrac)/(range); bottomstep = (bottomfracend-bottomfrac)/(range);
} }
#endif #endif
}
dc_numlights = 0; dc_numlights = 0;