Added error message if included DirectX DLLs are missing (#998)

* Added error message if included DirectX DLLs are missing

* locale: added System_Win32_MissingDLLs localisation

Co-Authored-By: LJSTAR <31629427+LJSTARbird@users.noreply.github.com>
Co-Authored-By: Kitzuku <25226941+Kitzuku@users.noreply.github.com>
Co-Authored-By: NextinHKRY <38560522+NextinMono@users.noreply.github.com>
Co-Authored-By: brianuuu <38166666+brianuuu@users.noreply.github.com>
Co-Authored-By: Darío <538504+DarioSamo@users.noreply.github.com>

* Fix ifdefs

---------

Co-authored-by: LJSTAR <31629427+LJSTARbird@users.noreply.github.com>
Co-authored-by: Kitzuku <25226941+Kitzuku@users.noreply.github.com>
Co-authored-by: NextinHKRY <38560522+NextinMono@users.noreply.github.com>
Co-authored-by: brianuuu <38166666+brianuuu@users.noreply.github.com>
Co-authored-by: Darío <538504+DarioSamo@users.noreply.github.com>

UnleashedRecomp/locale/locale.cpp

@@ -692,6 +692,17 @@ std::unordered_map<std::string_view, std::unordered_map<ELanguage, std::string>>
             { ELanguage::Italian,  "Impossibile creare un backend D3D12 (Windows) o Vulkan.\n\nAssicurati che:\n\n- Il tuo sistema soddisfi i requisiti minimi.\n- I driver della scheda grafica siano aggiornati.\n- Il tuo sistema operativo sia aggiornato." }
         }
     },
+    {
+        "System_Win32_MissingDLLs",
+        {
+            { ELanguage::English,  "The module \"%s\" could not be found.\n\nPlease make sure that:\n\n- You extracted this copy of Unleashed Recompiled fully and not just the *.exe file.\n- You are not running Unleashed Recompiled from a *.zip file." },
+            { ELanguage::Japanese, "モジュール\"%s\"が見つかりませんでした\n\n次の点を確認してください：\n\n※Unleashed Recompiledの*.exeファイルだけを抽出していなく、 コピーを完全に抽出してること\n※Unleashed Recompiledを*.zipファイルから実行していないこと" },
+            { ELanguage::German,   "Das Modul \"%s\" konnte nicht gefunden werden.\n\nBitte stelle sicher, dass:\n\n- Diese Kopie von Unleashed Recompiled vollständig entpackt wurde und nicht nur die *.exe-Datei.\n- Unleashed Recompiled nicht direkt aus einer *.zip-Datei ausgeführt wird." },
+            { ELanguage::French,   "Le module \"%s\" n'a pas pu être trouvé.\n\nVeuillez vous assurer que :\n\n- Vous avez extrait Unleashed Recompiled dans son entièreté et pas seulement le fichier *.exe.\n- Vous n'exécutez pas Unleashed Recompiled à partir d'un fichier *.zip." },
+            { ELanguage::Spanish,  "No se pudo encontrar el módulo \"%s\".\n\nAsegúrese de que:\n\n- Ha extraido esta copia de Unleashed Recompiled por completo y no solo el archivo *.exe.\n- No está ejecutando Unleashed Recompiled desde un archivo *.zip." },
+            { ELanguage::Italian,  "Impossibile trovare il modulo \"%s\".\n\nAssicurati che:\n\n- Hai estratto questa copia di Unleashed Recompiled correttamente e non solo il file *.exe.\n- Non stai eseguendo Unleashed Recompiled da un file *.zip." }
+        }
+    },
     {
         "Common_On",
         {

UnleashedRecomp/main.cpp

@@ -28,6 +28,15 @@
 #include <timeapi.h>
 #endif
 
+#if defined(_WIN32) && defined(UNLEASHED_RECOMP_D3D12)
+static std::array<std::string_view, 3> g_D3D12RequiredModules =
+{
+    "D3D12/D3D12Core.dll",
+    "dxcompiler.dll",
+    "dxil.dll"
+};
+#endif
+
 const size_t XMAIOBegin = 0x7FEA0000;
 const size_t XMAIOEnd = XMAIOBegin + 0x0000FFFF;
 
@@ -204,6 +213,19 @@ int main(int argc, char *argv[])
 
     Config::Load();
 
+#if defined(_WIN32) && defined(UNLEASHED_RECOMP_D3D12)
+    for (auto& dll : g_D3D12RequiredModules)
+    {
+        if (!std::filesystem::exists(g_executableRoot / dll))
+        {
+            char text[512];
+            snprintf(text, sizeof(text), Localise("System_Win32_MissingDLLs").c_str(), dll.data());
+            SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, GameWindow::GetTitle(), text, GameWindow::s_pWindow);
+            std::_Exit(1);
+        }
+    }
+#endif
+
     // Check the time since the last time an update was checked. Store the new time if the difference is more than six hours.
     constexpr double TimeBetweenUpdateChecksInSeconds = 6 * 60 * 60;
     time_t timeNow = std::time(nullptr);

UnleashedRecomp/user/paths.h

@@ -8,6 +8,8 @@
 #define GAME_INSTALL_DIRECTORY "."
 #endif
 
+extern std::filesystem::path g_executableRoot;
+
 inline std::filesystem::path GetGamePath()
 {
     return GAME_INSTALL_DIRECTORY;