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WOOPS, did not mean to leave it in the rangecheck, now it works close to desired

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some complicated mathemagic leads to something which... seems CLOSE, but not perfectly accurate, so i think i need to tweak it more

http://gfycat.com/JovialSpitefulAmericancrayfish for current behaviour
This commit is contained in:
toasterbabe 2016-08-16 23:17:45 +01:00
parent 76e53ee3b6
commit 27cdef0075
1 changed files with 35 additions and 6 deletions
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41
src/r_things.c
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@ -913,8 +913,6 @@ static void R_DrawVisSprite(vissprite_t *vis)
for (dc_x = vis->x1; dc_x <= vis->x2; dc_x++, frac += vis->xiscale)
{
#ifdef RANGECHECK
sprtopscreen = (centeryfrac - FixedMul(dc_texturemid, spryscale));
dc_iscale = 0xffffffffu / (unsigned)spryscale;
texturecolumn = frac>>FRACBITS;
@ -924,6 +922,11 @@ static void R_DrawVisSprite(vissprite_t *vis)
#else
column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[frac>>FRACBITS]));
#endif
if (vis->scalestep)
{
sprtopscreen = (centeryfrac - FixedMul(dc_texturemid, spryscale));
dc_iscale = FixedMul((0xffffffffu / (unsigned)spryscale), this_scale);
}
if (vis->vflip)
R_DrawFlippedMaskedColumn(column, patch->height);
else
@ -1114,6 +1117,7 @@ static void R_ProjectSprite(mobj_t *thing)
angle_t ang;
fixed_t iscale;
fixed_t scalestep = 0; // toast '16
fixed_t leftoffset;
//SoM: 3/17/2000
fixed_t gz, gzt;
@ -1199,7 +1203,7 @@ static void R_ProjectSprite(mobj_t *thing)
if (1) //(flatsprite)
{
ang_scale = abs(FINESINE(ang>>ANGLETOFINESHIFT));
scalestep = (FINECOSINE(ang>>ANGLETOFINESHIFT));
//scalestep = (FINECOSINE(ang>>ANGLETOFINESHIFT));
}
if (sprframe->rotate == SRF_SINGLE)
@ -1233,9 +1237,10 @@ static void R_ProjectSprite(mobj_t *thing)
// calculate edges of the shape
if (flip)
tx -= FixedMul(spritecachedinfo[lump].width-spritecachedinfo[lump].offset, FixedMul(this_scale, ang_scale));
leftoffset = spritecachedinfo[lump].width-spritecachedinfo[lump].offset;
else
tx -= FixedMul(spritecachedinfo[lump].offset, FixedMul(this_scale, ang_scale));
leftoffset = spritecachedinfo[lump].offset;
tx -= FixedMul(leftoffset, FixedMul(this_scale, ang_scale));
x1 = (centerxfrac + FixedMul (tx,xscale)) >>FRACBITS;
// off the right side?
@ -1250,7 +1255,31 @@ static void R_ProjectSprite(mobj_t *thing)
return;
if (1) // (flatsprite)
yscale = yscale - (x2 - x1)*scalestep/2;
{
fixed_t yscale2;
INT32 range;
tr_x = thing->x + FixedMul(-leftoffset, FINECOSINE(ang>>ANGLETOFINESHIFT)) - viewx;
tr_y = thing->y + FixedMul(-leftoffset, FINESINE(ang>>ANGLETOFINESHIFT)) - viewy;
gxt = FixedMul(tr_x, viewcos);
gyt = -FixedMul(tr_y, viewsin);
tz = gxt-gyt;
yscale = FixedDiv(projectiony, tz);
leftoffset += spritecachedinfo[lump].width;
tr_x = thing->x + FixedMul(leftoffset, FINECOSINE(ang>>ANGLETOFINESHIFT)) - viewx;
tr_y = thing->y + FixedMul(leftoffset, FINESINE(ang>>ANGLETOFINESHIFT)) - viewy;
gxt = FixedMul(tr_x, viewcos);
gyt = -FixedMul(tr_y, viewsin);
tz = gxt-gyt;
yscale2 = FixedDiv(projectiony, tz);
if (x2 > x1)
range = (x2 - x1);
else
range = 1;
scalestep = (yscale2 - yscale)/range;
}
xscale = FixedMul(xscale, ang_scale);