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Some overflow checks. They're not proper like the other overflow checks, but they remove all the situations I've been able to discover without making stuff unnecessarily disappear.

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This commit is contained in:
toasterbabe 2016-08-17 19:09:59 +01:00
parent 63e58a02f8
commit 2244e9162b
1 changed files with 3 additions and 1 deletions
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4
src/r_things.c
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@ -1266,6 +1266,7 @@ static void R_ProjectSprite(mobj_t *thing)
gyt = -FixedMul(tr_y, viewsin);
tz = gxt-gyt;
yscale1 = FixedDiv(projectiony, tz);
if (yscale1 < 64) return; // Fix some funky visuals
offset += spritecachedinfo[lump].width;
tr_x = thing->x + FixedMul(offset, FINECOSINE(thing->angle>>ANGLETOFINESHIFT)) - viewx;
@ -1274,6 +1275,7 @@ static void R_ProjectSprite(mobj_t *thing)
gyt = -FixedMul(tr_y, viewsin);
tz = gxt-gyt;
yscale2 = FixedDiv(projectiony, tz);
if (yscale2 < 64) return; // Fix some funky visuals
if (ang >= ANGLE_180)
{
@ -1287,8 +1289,8 @@ static void R_ProjectSprite(mobj_t *thing)
else
range = 1;
scalestep = (yscale2 - yscale1)/range;
yscale = yscale1;
//this_scale = FixedMul(this_scale, FixedDiv(yscale, yscale1));
yscale = yscale1;
}
xscale = FixedMul(xscale, ang_scale);