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Delay destroying of cigarettes/bottles held by NPCs so it does not potentially corrupt the moving list

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Silent 2024-02-08 20:17:45 +01:00
parent b48f5da91d
commit 62716d905f
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1 changed files with 33 additions and 0 deletions
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33
SilentPatchSA/SilentPatchSA.cpp
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@ -4741,6 +4741,21 @@ void Patch_SA_10()
}
// Delay destroying of cigarettes/bottles held by NPCs so it does not potentially corrupt the moving list
// CWorld::Process processes all entries in the moving list, calling ProcessControl on them.
// CPlayerPed::ProcessControl handles the gang recruitment which in turn can result in homies dropping cigarettes or bottles.
// When this happens, they are destroyed -immediately-. If those props are in the moving list right after the PlayerPed,
// this corrupts a pre-cached node->next pointer and references an already freed entity.
// To fix this, queue the entity for a delayed destruction instead of destroying immediately,
// and let it destroy itself in CWorld::Process later.
// or [esi+1Ch], 800h // bRemoveFromWorld
// (The entity reference is already cleared for us, no need to do it)
// jmp 5E03EC
Patch(0x5E03D4, { 0x81, 0x4E, 0x1C, 0x00, 0x08, 0x00, 0x00, 0xEB, 0x0F });
#if FULL_PRECISION_D3D
// Test - full precision D3D device
Patch<uint8_t>( 0x7F672B+1, *(uint8_t*)(0x7F672B+1) | D3DCREATE_FPU_PRESERVE );
@ -6326,6 +6341,24 @@ void Patch_SA_NewBinaries_Common()
auto clumpRender = get_pattern("E8 ? ? ? ? DD 05 ? ? ? ? 83 C4 14");
InterceptCall(clumpRender, orgRpClumpRender, RpClumpRender_SetLitFlag);
}
// Delay destroying of cigarettes/bottles held by NPCs so it does not potentially corrupt the moving list
{
// CWorld::Process processes all entries in the moving list, calling ProcessControl on them.
// CPlayerPed::ProcessControl handles the gang recruitment which in turn can result in homies dropping cigarettes or bottles.
// When this happens, they are destroyed -immediately-. If those props are in the moving list right after the PlayerPed,
// this corrupts a pre-cached node->next pointer and references an already freed entity.
// To fix this, queue the entity for a delayed destruction instead of destroying immediately,
// and let it destroy itself in CWorld::Process later.
// or [esi+1Ch], 800h // bRemoveFromWorld
// (The entity reference is already cleared for us, no need to do it)
// jmp 5E03EC
auto dropEntity = get_pattern("74 1C 8B 16 8B 42 20", 2);
Patch(dropEntity, { 0x81, 0x4E, 0x1C, 0x00, 0x08, 0x00, 0x00, 0xEB, 0x13 });
}
}