Initial public release of rem-essentials

2026-08-11 16:48:50 +02:00
commit d611924a5e
161 changed files with 9792 additions and 0 deletions
@@ -0,0 +1,48 @@
+#include "restart.h"
+#include "offsets.h"
+#include "config.h"
+#include "patch.h"
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <cstring>
+
+DWORD loadSaveGameFuncAddr = 0;
+char restartFileName[64];
+
+bool __fastcall LoadSaveGame_Hook(PVOID thisptr, PVOID _edx, LPCSTR path, LPCSTR fileName)
+{
+    if (_stricmp(fileName, restartFileName) == 0)
+        return false;
+
+    typedef bool __fastcall LoadSaveGame(PVOID, PVOID, LPCSTR, LPCSTR);
+    return ((LoadSaveGame*) loadSaveGameFuncAddr)(thisptr, _edx, path, fileName);
+}
+
+// Prevents crashes when FL loads a malformed (e.g. from another mod) Restart.fl file.
+// This code makes it so that Restart.fl is recreated on every restart.
+bool restart::init()
+{
+    if (!config::get_config().alwaysregeneraterestartfile)
+        return true;
+
+    auto server = (DWORD) GetModuleHandleA("Server.dll");
+    if (!server)
+        server = (DWORD) LoadLibraryA("Server.dll");
+    if (!server)
+        return false;
+
+    UINT loadSaveGameHookPtr = (UINT) &LoadSaveGame_Hook;
+    UINT loadSaveGameCallAddr = server + F_OF_LOAD_SAVE_GAME_CALL;
+    loadSaveGameFuncAddr = server + F_OF_LOAD_SAVE_GAME;
+
+    patch::set_execute_read_write(server + F_OF_RESTART_NAME_PTR, 4);
+    patch::set_execute_read_write(server + F_OF_SAVE_FILE_FMT_PTR, 4);
+
+    // Dynamically obtain the name of the restart file
+    LPCSTR restartName = *((LPCSTR*) (server + F_OF_RESTART_NAME_PTR));
+    LPCSTR saveFileFmt = *((LPCSTR*) (server + F_OF_SAVE_FILE_FMT_PTR));
+    sprintf_s(restartFileName, sizeof(restartFileName), saveFileFmt, restartName);
+
+    patch::patch_uint32(loadSaveGameCallAddr, loadSaveGameHookPtr - loadSaveGameCallAddr - 4);
+    return true;
+}