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Added alpha-only, relative calc, and offset params to 447 Change Colormap

This commit is contained in:
mazmazz 2018-09-11 16:50:35 -04:00
parent fb7ac4ccae
commit bb6cf6a807
1 changed files with 37 additions and 1 deletions
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38
src/p_spec.c
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@ -3256,7 +3256,43 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
// This could even override existing colormaps I believe
// -- Monster Iestyn 14/06/18
for (secnum = -1; (secnum = P_FindSectorFromLineTag(line, secnum)) >= 0 ;)
sectors[secnum].extra_colormap = line->frontsector->extra_colormap;
{
if (line->flags & ML_NOCLIMB) // set alpha only
{
if (sectors[secnum].extra_colormap) // does nothing without an existing colormap
{
extracolormap_t *dest_colormap = R_CopyColormap(sectors[secnum].extra_colormap, false);
INT16 alpha;
// base rgba
alpha = (line->flags & ML_DONTPEGBOTTOM && line->sidenum[1] != 0xFFFF) ?
(sides[line->sidenum[1]].textureoffset >> FRACBITS)
: R_GetRgbaA(line->frontsector->extra_colormap->rgba);
if (line->flags & ML_EFFECT3) // relative calc
alpha = max(min(R_GetRgbaA(sectors[secnum].extra_colormap->rgba) + alpha, 25), 0);
dest_colormap->rgba = (dest_colormap->rgba & 0xFFFFFF) + (alpha << 24);
// fade rgba
alpha = (line->flags & ML_DONTPEGBOTTOM && line->sidenum[1] != 0xFFFF) ?
(sides[line->sidenum[1]].rowoffset >> FRACBITS)
: R_GetRgbaA(line->frontsector->extra_colormap->fadergba);
if (line->flags & ML_EFFECT3) // relative calc
alpha = max(min(R_GetRgbaA(sectors[secnum].extra_colormap->fadergba) + alpha, 25), 0);
dest_colormap->fadergba = (dest_colormap->fadergba & 0xFFFFFF) + (alpha << 24);
if (!(sectors[secnum].extra_colormap = R_GetColormapFromList(dest_colormap)))
{
dest_colormap->colormap = R_CreateLightTable(dest_colormap);
R_AddColormapToList(dest_colormap);
sectors[secnum].extra_colormap = dest_colormap;
}
else
memset(dest_colormap, 0, sizeof(*dest_colormap));
}
}
else
sectors[secnum].extra_colormap = line->frontsector->extra_colormap;
}
break;
case 448: // Change skybox viewpoint/centerpoint