From adb9547ba9eb7319dad55efa3b765d561fa627bb Mon Sep 17 00:00:00 2001
From: nukeykt <alexeytf2@gmail.com>
Date: Mon, 26 Jul 2021 16:34:16 +0900
Subject: [PATCH] Blood: fix impact sprite OOB issue

---
 source/games/blood/src/actor.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/source/games/blood/src/actor.cpp b/source/games/blood/src/actor.cpp
index d0dc5e143..86d5ee584 100644
--- a/source/games/blood/src/actor.cpp
+++ b/source/games/blood/src/actor.cpp
@@ -6096,7 +6096,10 @@ void actProcessSprites(void)
                     else if (sprite[gImpactSpritesList[i]].sectnum < 0 || (sprite[gImpactSpritesList[i]].flags & kHitagFree) != 0)
                         continue;
 
-                    spritetype* pImpact = &sprite[gImpactSpritesList[i]]; XSPRITE* pXImpact = &xsprite[pImpact->extra];
+                    spritetype* pImpact = &sprite[gImpactSpritesList[i]];
+                    if (pImpact->extra <= 0)
+                        continue;
+                    XSPRITE* pXImpact = &xsprite[pImpact->extra];
                     if (/*pXImpact->state == pXImpact->restState ||*/ !TestBitString(v24c, pImpact->sectnum) || !CheckProximity(pImpact, x, y, z, nSector, radius))
                         continue;