On Windows, use Unicode/UTF-8 for stat().

doc/ChangeLog.txt

@@ -641,3 +641,5 @@ DONE: In new replays, use deprecation_number = 2. On playback, waste the RNG cyc
 	Older replays have deprecation_number <= 1, and we don't waste the RNG cycle when playing them back.
 DONE: When backing offscreen (to the left) from the first guard on level 7 (among others), simulate the glitch from DOS PoP, which causes the prince to fall through the floor.
 	Details: See https://github.com/NagyD/SDLPoP/issues/229
+FIXED: On Windows, use Unicode/UTF-8 for stat().
+	So SDLPoP can load levels from mod folders when a replay file restarts the level or advances to the next level.

src/options.c

@@ -714,6 +714,7 @@ void load_mod_options() {
 		char folder_name[POP_MAX_PATH];
 		snprintf_check(folder_name, sizeof(folder_name), "%s/%s", mods_folder, levelset_name);
 		const char* located_folder_name = locate_file(folder_name);
+		//printf("located_folder_name = %s\n", located_folder_name);
 		bool ok = false;
 		struct stat info;
 		if (stat(located_folder_name, &info) == 0) {

src/proto.h

@@ -513,19 +513,30 @@ void sdlperror(const char* header);
 bool file_exists(const char* filename);
 #define locate_file(filename) locate_file_(filename, alloca(POP_MAX_PATH), POP_MAX_PATH)
 const char* locate_file_(const char* filename, char* path_buffer, int buffer_size);
+
 #ifdef _WIN32
+
 FILE* fopen_UTF8(const char* filename, const char* mode);
 #define fopen fopen_UTF8
+
 int chdir_UTF8(const char* path);
 #define chdir chdir_UTF8
+
 int mkdir_UTF8(const char* path);
 #define mkdir mkdir_UTF8
+
 int access_UTF8(const char* filename_UTF8, int mode);
 #ifdef access
 #undef access
 #endif
 #define access access_UTF8
+
+int stat_UTF8(const char *filename_UTF8, struct stat *_Stat);
+// We define a function-like macro, because `stat` is also the name of the type, and we don't want to redefine that.
+#define stat(filename_UTF8, _Stat) stat_UTF8(filename_UTF8, _Stat)
+
 #endif //_WIN32
+
 directory_listing_type* create_directory_listing_and_find_first_file(const char* directory, const char* extension);
 char* get_current_filename_from_directory_listing(directory_listing_type* data);
 bool find_next_file(directory_listing_type* data);

src/seg009.c

@@ -108,6 +108,15 @@ int access_UTF8(const char* filename_UTF8, int mode) {
 	SDL_free(filename_UTF16);
 	return result;
 }
+
+int stat_UTF8(const char *filename_UTF8, struct stat *_Stat) {
+	WCHAR* filename_UTF16 = WIN_UTF8ToString(filename_UTF8);
+	// There is a _wstat() function as well, but it expects the second argument to be a different type than stat().
+	int result = wstat(filename_UTF16, _Stat);
+	SDL_free(filename_UTF16);
+	return result;
+}
+
 #endif //_WIN32
 
 // OS abstraction for listing directory contents