Added default path fallback for splash screens

* before the game loaded splash screens only from art\<language>\splash\
if the game language is not English, ignoring the default art\splash\.

Added a global boolean to replace individual game language checks.

sfall/Modules/Credits.cpp

@@ -178,7 +178,7 @@ static __declspec(naked) void ShowCreditsHook() {
 	}
 }
 
-// Loads the credits from the 'english' folder if it does not exist in the current language directory
+// Loads the credits from the 'english' folder if not found in the current language directory
 static __declspec(naked) void CreditsFileHook() {
 	__asm {
 		mov  ebx, edx; // keep mode
@@ -202,8 +202,7 @@ noFile:
 }
 
 static void FallbackEnglishCredits() {
-	const char* lang;
-	if (fo::func::get_game_config_string(&lang, "system", "language") && _stricmp(lang, "english") != 0) {
+	if (nonEngLang) {
 		HookCall(0x42C900, CreditsFileHook);
 	}
 }

sfall/Modules/LoadOrder.cpp

@@ -585,10 +585,44 @@ artNotExist:
 	}
 }
 
+static __declspec(naked) void game_splash_screen_hack() {
+	__asm {
+		mov  nonEngLang, 1;
+		// overwritten engine code
+		mov  ecx, [esp + 0xA4 - 0x24 + 4]; 
+		retn;
+	}
+}
+
+static __declspec(naked) void game_splash_screen_hook() {
+	__asm {
+		call fo::funcoffs::db_fopen_;
+		cmp  nonEngLang, 0;
+		jne  checkFile;
+		retn;
+checkFile:
+		test eax, eax;
+		jz   noFile;
+		retn;
+noFile:
+		mov  eax, dword ptr [esp + 0xA4 - 0x20 + 4]; // splash value
+		push eax;
+		push 0x5023E8; // "art\splash\"
+		push 0x502404; // "%ssplash%d.rix"
+		lea  ebx, [esp + 0xA4 - 0x64 + 16]; // fullname
+		push ebx;
+		call fo::funcoffs::sprintf_;
+		add  esp, 16;
+		mov  edx, edi; // mode
+		mov  eax, ebx; // fullname
+		jmp  fo::funcoffs::db_fopen_;
+	}
+}
+
 static fo::DbFile* __fastcall LoadFont(const char* font, const char* mode) {
 	char file[128];
 	const char* lang;
-	if (fo::func::get_game_config_string(&lang, "system", "language") && _stricmp(lang, "english") != 0) {
+	if (fo::func::get_game_config_string(&lang, "system", "language") && nonEngLang) {
 		std::sprintf(file, "fonts\\%s\\%s", lang, font);
 		return fo::func::db_fopen(file, mode);
 	}
@@ -682,6 +716,11 @@ void LoadOrder::init() {
 	MakeCall(0x47FB80, SlotMap2Game_hack); // load game
 	MakeCall(0x47FBBF, SlotMap2Game_hack_attr, 1);
 
+	// Set sfall global boolean if the game language is not English
+	MakeCall(0x4443F2, game_splash_screen_hack, 2);
+	// Load splash screens from the default path if not found in the art\<language>\splash\ directory
+	HookCall(0x44444E, game_splash_screen_hook);
+
 	// Load fonts based on the game language
 	HookCalls(load_font_hook, {
 		0x4D5621, // load_font_

sfall/Modules/Message.cpp

@@ -302,7 +302,7 @@ static void FallbackEnglishLoadMsgFiles() {
 	const char* lang;
 	if (fo::func::get_game_config_string(&lang, "system", "language")) {
 		strncpy_s(gameLanguage, lang, _TRUNCATE);
-		if (_stricmp(lang, "english") != 0) {
+		if (nonEngLang) {
 			HookCall(0x484B18, message_load_hook_db_fopen);
 			HookCall(0x484C4B, message_search_hook_message_find);
 			HookCall(0x4849B9, message_exit_hook_mem_free);

sfall/Modules/Premade.cpp

@@ -39,7 +39,7 @@ static const char* __fastcall GetLangPremadePath(const char* premadePath) {
 			isDefault = true;
 			return nullptr;
 		}
-		isDefault = (_stricmp(Message::GameLanguage(), "english") == 0);
+		isDefault = !nonEngLang;
 		if (isDefault) return nullptr;
 
 		std::strncpy(premadeLangPath, premadePath, 8);

sfall/main.cpp

@@ -102,6 +102,8 @@ bool versionCHI = false;
 
 bool extWrapper = false;
 
+bool nonEngLang = false;
+
 static char falloutConfigName[65];
 
 static void InitModules() {

sfall/main.h

@@ -85,6 +85,8 @@ extern bool versionCHI;
 
 extern bool extWrapper;
 
+extern bool nonEngLang;
+
 __inline long GetIntHRPValue(DWORD addr) {
 	return *reinterpret_cast<DWORD*>(HRP::Setting::GetAddress(addr));
 }