Add translatable error screens

cmake/FetchDependencies.cmake

@@ -42,7 +42,7 @@ fetch_dependency("libretro-common" "https://github.com/libretro/libretro-common.
 fetch_dependency("embed-binaries" "https://github.com/andoalon/embed-binaries.git" "21f28ca")
 fetch_dependency(glm "https://github.com/g-truc/glm" "33b0eb9")
 fetch_dependency(libslirp "https://github.com/JesseTG/libslirp-mirror.git" "44e7877")
-fetch_dependency(pntr "https://github.com/robloach/pntr" "a3dc08c")
+fetch_dependency(pntr "https://github.com/robloach/pntr" "3421a6d")
 fetch_dependency(fmt "https://github.com/fmtlib/fmt" "10.2.1")
 fetch_dependency(yamc "https://github.com/yohhoy/yamc" "4e015a7")
 fetch_dependency(span-lite "https://github.com/martinmoene/span-lite" "bc08bf8")

src/libretro/CMakeLists.txt

@@ -227,11 +227,13 @@ configure_file("${CMAKE_CURRENT_SOURCE_DIR}/version.hpp.in" "${CMAKE_CURRENT_BIN
 target_compile_definitions(melondsds_libretro PUBLIC
     GLM_ENABLE_EXPERIMENTAL
     PNTR_ENABLE_DEFAULT_FONT
-    PNTR_ENABLE_FILTER_SMOOTH
     PNTR_ENABLE_TTF
     PNTR_ENABLE_VARGS
     PNTR_PIXELFORMAT_ARGB
     PNTR_ENABLE_MATH
+    PNTR_ENABLE_UTF8
+    PNTR_NO_STDIO
+    PNTR_NO_SAVE_IMAGE
     STB_IMAGE_STATIC # To avoid using any dynamically-linked STB implementations
 )
 

src/libretro/core/core.cpp

@@ -313,7 +313,7 @@ bool MelonDsDs::CoreState::InitErrorScreen(const config_exception& e) noexcept {
     }
 
     retro::task::reset();
-    _messageScreen = std::make_unique<error::ErrorScreen>(e);
+    _messageScreen = std::make_unique<error::ErrorScreen>(e, language);
     Config.SetConfiguredRenderer(RenderMode::Software);
     _screenLayout.Update();
     retro::error("Error screen initialized");
@@ -475,6 +475,14 @@ void MelonDsDs::CoreState::DestroyRenderState() {
 bool MelonDsDs::CoreState::LoadGame(unsigned type, std::span<const retro_game_info> game) noexcept try {
     ZoneScopedN(TracyFunction);
 
+    printf("Initialize languageCoreState::LoadGame  ");
+
+    // Initialize the language.
+    unsigned lang = 0;
+    if (retro::environment(RETRO_ENVIRONMENT_GET_LANGUAGE, (void*)&lang)) {
+        language = (enum retro_language)lang;
+    }
+
     InitContent(type, game);
 
     // ...then load the game.

src/libretro/core/core.hpp

@@ -155,6 +155,7 @@ namespace MelonDsDs {
         bool _deferredInitializationPending = false;
         uint32_t _flushTaskId = 0;
         NetworkMode _activeNetworkMode = NetworkMode::None;
+        enum retro_language language = RETRO_LANGUAGE_ENGLISH;
     };
 }
 #endif //MELONDSDS_CORE_HPP

src/libretro/message/error.cpp

@@ -42,7 +42,7 @@ using std::span;
 using MelonDsDs::NDS_SCREEN_AREA;
 
 // I intentionally fix the error message to the DS screen size to simplify the layout.
-MelonDsDs::error::ErrorScreen::ErrorScreen(const config_exception& e) noexcept : exception(e) {
+MelonDsDs::error::ErrorScreen::ErrorScreen(const config_exception& e, enum retro_language language) noexcept : exception(e) {
     ZoneScopedN(TracyFunction);
 
     pntr_font* titleFont = pntr_load_font_ttf_from_memory(
@@ -105,7 +105,7 @@ void MelonDsDs::error::ErrorScreen::DrawTopScreen(pntr_font* titleFont, pntr_fon
     pntr_draw_text(
         topScreen,
         titleFont,
-        ERROR_TITLE,
+        translate(ERROR_TITLE),
         (NDS_SCREEN_WIDTH - titleTextSize.x) / 2,
         MARGIN,
         TEXT_COLOR_TOP
@@ -115,7 +115,7 @@ void MelonDsDs::error::ErrorScreen::DrawTopScreen(pntr_font* titleFont, pntr_fon
     pntr_draw_text_wrapped(
         topScreen,
         bodyFont,
-        exception.what(),
+        translate(exception.what()),
         MARGIN,
         titleTextSize.y + MARGIN * 2,
         NDS_SCREEN_WIDTH - MARGIN * 2,
@@ -150,7 +150,7 @@ void MelonDsDs::error::ErrorScreen::DrawBottomScreen(pntr_font* titleFont, pntr_
     pntr_draw_text(
         bottomScreen,
         titleFont,
-        SOLUTION_TITLE,
+        translate(SOLUTION_TITLE),
         (NDS_SCREEN_WIDTH - titleTextSize.x) / 2,
         MARGIN,
         TEXT_COLOR_BOTTOM
@@ -160,7 +160,7 @@ void MelonDsDs::error::ErrorScreen::DrawBottomScreen(pntr_font* titleFont, pntr_
     pntr_draw_text_wrapped(
         bottomScreen,
         bodyFont,
-        exception.user_message(),
+        translate(exception.user_message()),
         MARGIN,
         titleTextSize.y + MARGIN * 2,
         NDS_SCREEN_WIDTH - MARGIN * 2,
@@ -171,7 +171,7 @@ void MelonDsDs::error::ErrorScreen::DrawBottomScreen(pntr_font* titleFont, pntr_
     pntr_draw_text(
         bottomScreen,
         bodyFont,
-        THANK_YOU,
+        translate(THANK_YOU),
         NDS_SCREEN_WIDTH - thankYouTextSize.x - MARGIN,
         NDS_SCREEN_HEIGHT - thankYouTextSize.y - MARGIN,
         TEXT_COLOR_BOTTOM
@@ -185,3 +185,29 @@ span<const uint32_t, NDS_SCREEN_AREA<size_t>> MelonDsDs::error::ErrorScreen::Top
 span<const uint32_t, NDS_SCREEN_AREA<size_t>> MelonDsDs::error::ErrorScreen::BottomScreen() const noexcept {
     return span<const uint32_t, NDS_SCREEN_AREA<size_t>>{(const uint32_t*)bottomScreen->data, NDS_SCREEN_AREA<size_t>};
 }
+
+#include <stdio.h>
+/**
+ * Translates the given message into the active current `language`.
+ * 
+ * @param message The message to translate.
+ * 
+ * @return A translated message if a translation is available, otherwise the original message.
+ */
+const char* MelonDsDs::error::ErrorScreen::translate(const char* message) const noexcept {
+    printf("Lagnuage: %d\n", (int)language);
+    switch (language) {
+        case RETRO_LANGUAGE_SPANISH:
+            if (message == ERROR_TITLE)     return "¡Oh no! melonDS DS no pudo iniciar...";
+            if (message == SOLUTION_TITLE)  return "Esto es lo que puedes hacer:";
+            if (message == THANK_YOU)       return "¡Gracias por usar melonDS DS!";
+        case RETRO_LANGUAGE_FRENCH:
+            if (message == ERROR_TITLE)     return "Oh non! melonDS DS n'a pas pu démarrer...";
+            if (message == SOLUTION_TITLE)  return "Voici ce que vous pouvez faire:";
+            if (message == THANK_YOU)       return "Merci d'utiliser melonDS DS!";
+        default:
+            return message;
+    }
+
+    // TODO: Add translations of the possible exceptions?
+}

src/libretro/message/error.hpp

@@ -17,6 +17,8 @@
 #ifndef MELONDS_DS_ERROR_HPP
 #define MELONDS_DS_ERROR_HPP
 
+#include <libretro.h> // enum retro_language
+
 #include "exceptions.hpp"
 #include "screenlayout.hpp"
 
@@ -31,7 +33,7 @@ namespace MelonDsDs {
 namespace MelonDsDs::error {
     class ErrorScreen {
     public:
-        explicit ErrorScreen(const config_exception& e) noexcept;
+        explicit ErrorScreen(const config_exception& e, enum retro_language language) noexcept;
         ~ErrorScreen();
         ErrorScreen(const ErrorScreen&) = delete;
         ErrorScreen& operator=(const ErrorScreen&) = delete;
@@ -43,9 +45,11 @@ namespace MelonDsDs::error {
     private:
         void DrawTopScreen(pntr_font* titleFont, pntr_font* bodyFont) const noexcept;
         void DrawBottomScreen(pntr_font* titleFont, pntr_font* bodyFont) const noexcept;
+        const char* translate(const char* message) const noexcept;
         config_exception exception;
         pntr_image* bottomScreen = nullptr;
         pntr_image* topScreen = nullptr;
+        enum retro_language language = RETRO_LANGUAGE_ENGLISH;
     };
 }