static void FixInfixToPostfixOverflow(void)
{
// this function uses a statically allocated 64 byte work buffer that overflows really quickly
// hook replaces the buffer, safe to use a static buffer because it isn't re-entrant and can't be called from multiple threads
WriteRelJump(kInfixToPostfixHookAddr_1, (UInt32)&InfixToPostfixHook_1);
WriteRelJump(kInfixToPostfixHookAddr_2, (UInt32)&InfixToPostfixHook_2);
}
void PatchEndOfLineCheck(bool bDisableCheck)
{
if (bDisableCheck)
WriteRelJump(kEndOfLineCheckPatchAddr, kEndOfLineCheckJumpAddr);
else
{
SafeWrite8(kEndOfLineCheckPatchAddr, 0x0F);
SafeWrite8(kEndOfLineCheckPatchAddr + 1, 0x83);
SafeWrite32(kEndOfLineCheckPatchAddr + 2, kEndOfLineCheckJumpDelta);
}
}
void Hook_Script_Init()
{
WriteRelJump(ExtractStringPatchAddr, (UInt32)&ExtractStringHook);
// patch the "apple bug"
// game caches information about the most recently retrieved RefVariable for the current executing script
// if same refIdx requested twice in a row returns previously returned ref without
// bothering to check if form stored in ref var has changed
// this fixes it by overwriting a conditional jump with an unconditional one
SafeWrite8(kResolveRefVarPatchAddr, 0xEB);
// game also caches information about the most recently retrieved local numeric variable for
// currently executing script. Causes issues with function scripts. As above, overwrite conditional jump with unconditional
SafeWrite8(kResolveNumericVarPatchAddr, 0xEB);
// hook code in the vanilla expression parser's subroutine to fix the buffer overflow
WriteRelJump(kExpressionParserBufferOverflowHookAddr_1, (UInt32)&ExpressionParserBufferOverflowHook_1);
WriteRelJump(kExpressionParserBufferOverflowHookAddr_2, (UInt32)&ExpressionParserBufferOverflowHook_2);
// hook ExtractArgs() to handle commands normally compiled with Cmd_Default_Parse which were instead compiled with Cmd_Expression_Parse
ExtractArgsOverride::Init_Hooks();
}
void __stdcall ToggleOverride(bool bOverride)
{
static const UInt32 patchLoc = 0x005C67E0; // editor default parse routine (g_defaultParseCommand in CommandTable) (F3:0x005C01F0)
// ToggleOverride() only gets invoked when we parse a begin or end statement, so set mode accordingly
s_currentMode = kOverride_BlockType;
// overwritten instructions
static const UInt8 s_patchedInstructions[5] = { 0x81, 0xEC, 0x30, 0x02, 0x00 }; // same first five bytes as Oblivion
if (bOverride) {
WriteRelJump(patchLoc, (UInt32)&Hook_Cmd_Default_Parse);
}
else {
for (UInt32 i = 0; i < sizeof(s_patchedInstructions); i++) {
SafeWrite8(patchLoc+i, s_patchedInstructions[i]);
}
}
}
void CreateSleepingModeHook()
{
#if defined(OBLIVION)
*((int *)&RemoveWornItems) = 0x0064BAC0;
TrackRemoveWornItems = &SleepingMode::TrackRemoveWornItems;
*((int *)&ServeSentence) = 0x00670700;
TrackServeSentence = &SleepingMode::TrackServeSentence;
#elif defined (SKYRIM)
*((int *)&SetFurnitureCameraState) = 0x0083D6E0;
TrackSetFurnitureCameraState = &SleepingMode::TrackSetFurnitureCameraState;
*((int *)&ProcessSleepWaitMenu) = 0x00887F90;
TrackProcessSleepWaitMenu = &SleepingMode::TrackProcessSleepWaitMenu;
*((int *)&ServeSentence) = 0x0074B7E0;
TrackServeSentence = &SleepingMode::TrackServeSentence;
#endif
DetourTransactionBegin();
DetourUpdateThread(GetCurrentThread());
#if defined(OBLIVION)
DetourAttach(&(PVOID&)RemoveWornItems, *((PVOID *)&TrackRemoveWornItems));
DetourAttach(&(PVOID&)ServeSentence, *((PVOID *)&TrackServeSentence));
DetourAttach(&(PVOID&)ProcessSleepWaitMenu, &TrackProcessSleepWaitMenu);
DetourAttach(&(PVOID&)CloseSleepWaitMenu, &TrackCloseSleepWaitMenu);
#elif defined(SKYRIM)
DetourAttach(&(PVOID&)SetFurnitureCameraState, *((PVOID *)&TrackSetFurnitureCameraState));
DetourAttach(&(PVOID&)ProcessSleepWaitMenu, *((PVOID *)&TrackProcessSleepWaitMenu));
DetourAttach(&(PVOID&)ServeSentence, *((PVOID *)&TrackServeSentence));
#endif
DetourAttach(&(PVOID&)ShowSleepWaitMenu, &TrackShowSleepWaitMenu);
DetourTransactionCommit();
#if defined(NEWVEGAS)
WriteRelJump(0x00509830, 0x0050983C); // Enables the Player to get into the bed
WriteRelJump(0x00942E0C, 0x00942E36); // Skips the possibility to get up by directional controls
#elif defined(OBLIVION)
WriteRelJump(0x004AEA1C, 0x004AEAEE); // Enables the Player to get into the bed
WriteRelJump(0x004AE961, 0x004AEAEE); // Enables the Player to get into the bed when in prison
WriteRelJump(0x00672BFF, 0x00672C18); // Enables the rest key when in prison
#elif defined(SKYRIM)
WriteRelJump(0x0049A351, 0x0049A367); // Enables the Player to get into the bed
WriteRelJump(0x0049A30F, 0x0049A367); // Enables the Player to get into the bed when in prison
#endif
}
