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Fixed file seeking in uncompressed .dat files

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(ref. fallout2-ce/fallout2-ce#244)
This commit is contained in:
NovaRain
2025-08-24 09:44:52 +08:00
parent 9996b60aae
commit a7850bd54a
1 changed files with 17 additions and 0 deletions
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sfall/Modules/FileSystem.cpp
+17
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@@ -706,6 +706,20 @@ bool FileSystem::IsEmpty() {
////////////////////////////////////////////////////////////////////////////////
static __declspec(naked) void dfile_fseek_hook() {
static const DWORD dfile_fseek_Ret = 0x4E5BCD;
__asm {
mov ecx, [esi + 4]; // stream->entry
test byte ptr [ecx + 4], 1; // stream->entry->compressed
jz skip;
jmp fo::funcoffs::inflateEnd_;
skip:
xor eax, eax;
add esp, 4;
jmp dfile_fseek_Ret;
}
}
static void __stdcall OpenWarning() {
MessageBoxA(0, "The open file limit is about to be reached.\n"
"It is recommended to restart the game to avoid critical errors.", "Warning", MB_TASKMODAL | MB_ICONWARNING);
@@ -783,6 +797,9 @@ void FileSystem::init() {
BlockCall(0x4DEF12);
BlockCall(0x4DEF84);
// Fix file seeking in uncompressed database files
HookCall(0x4E5B52, dfile_fseek_hook);
// Warning message when there are more than 16 open files (max 20)
HookCall(0x4EE0DE, sopen_hook_warning);
// Error message "Failed to open file"