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engine.c: prevent an oob read of spriteext[] in drawsprite_classic(). 

git-svn-id: https://svn.eduke32.com/eduke32@4872 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2014-12-30 20:05:20 +00:00
parent 61f7c9e30f
commit 5f263f1358
1 changed files with 12 additions and 11 deletions
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23
polymer/eduke32/build/src/engine.c
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@ -5643,24 +5643,25 @@ static void drawsprite_classic(int32_t snum)
int32_t vtilenum = 0;
spritetype *const tspr = tspriteptr[snum];
const int32_t xb = spritesxyz[snum].x;
const int32_t yp = spritesxyz[snum].y;
const int32_t spritenum = tspr->owner;
const int32_t sectnum = tspr->sectnum;
const sectortype *const sec = (sectnum>=0) ? &sector[sectnum] : NULL;
int32_t tilenum;
int32_t cstat = tspr->cstat;
uint8_t blendidx = tspr->blend;
float alpha = spriteext[spritenum].alpha;
if (sec == NULL)
if (sectnum < 0)
return;
if (bad_tspr(tspr))
return;
uint8_t blendidx = tspr->blend;
const int32_t xb = spritesxyz[snum].x;
const int32_t yp = spritesxyz[snum].y;
const int32_t spritenum = tspr->owner;
const float alpha = spriteext[spritenum].alpha;
const sectortype *const sec = &sector[sectnum];
int32_t cstat=tspr->cstat, tilenum;
DO_TILE_ANIM(tspr->picnum, spritenum+32768);
if (alpha > 0.0f)