From f856f871bb937c1aea63369e40e6df7b073a0f0a Mon Sep 17 00:00:00 2001
From: Pheenoh <pheenoh@gmail.com>
Date: Sun, 26 Apr 2026 13:55:32 -0600
Subject: [PATCH] Only show languages if PAL disc

---
 src/dusk/imgui/ImGuiPreLaunchWindow.cpp | 22 ++++++++++--------
 src/dusk/imgui/ImGuiPreLaunchWindow.hpp |  1 +
 src/dusk/iso_validate.cpp               | 31 +++++++++++++++++++++++++
 src/dusk/iso_validate.hpp               |  1 +
 4 files changed, 45 insertions(+), 10 deletions(-)

diff --git a/src/dusk/imgui/ImGuiPreLaunchWindow.cpp b/src/dusk/imgui/ImGuiPreLaunchWindow.cpp
index 6347e9bc01..eef8c08e0d 100644
--- a/src/dusk/imgui/ImGuiPreLaunchWindow.cpp
+++ b/src/dusk/imgui/ImGuiPreLaunchWindow.cpp
@@ -75,6 +75,7 @@ void fileDialogCallback(void* userdata, const char* path, const char* error) {
     }
 
     self->m_selectedIsoPath = path;
+    self->m_isPal = iso::isPal(path);
     getSettings().backend.isoPath.setValue(self->m_selectedIsoPath);
     config::Save();
 }
@@ -92,6 +93,7 @@ bool ImGuiPreLaunchWindow::isSelectedPathValid() const {
 void ImGuiPreLaunchWindow::draw() {
     if (m_IsFirstDraw) {
         m_selectedIsoPath = getSettings().backend.isoPath;
+        m_isPal = !m_selectedIsoPath.empty() && iso::isPal(m_selectedIsoPath.c_str());
         m_initialGraphicsBackend = getSettings().backend.graphicsBackend;
         m_IsFirstDraw = false;
     }
@@ -199,18 +201,18 @@ void ImGuiPreLaunchWindow::drawOptions() {
                            false);
         }
 
-        // TODO: Only show if PAL disc selected?
-        // Language selection
-        auto selectedLanguage = getSettings().game.language.getValue();
-        if (ImGui::BeginCombo("Language", skLanguageNames[static_cast<u8>(selectedLanguage)])) {
-            for (u8 i = 0; i < skLanguageNames.size(); ++i) {
-                if (ImGui::Selectable(skLanguageNames[i])) {
-                    getSettings().game.language.setValue(static_cast<GameLanguage>(i));
-                    config::Save();
+        if (m_isPal) {
+            auto selectedLanguage = getSettings().game.language.getValue();
+            if (ImGui::BeginCombo("Language", skLanguageNames[static_cast<u8>(selectedLanguage)])) {
+                for (u8 i = 0; i < skLanguageNames.size(); ++i) {
+                    if (ImGui::Selectable(skLanguageNames[i])) {
+                        getSettings().game.language.setValue(static_cast<GameLanguage>(i));
+                        config::Save();
+                    }
                 }
-            }
 
-            ImGui::EndCombo();
+                ImGui::EndCombo();
+            }
         }
 
         AuroraBackend configuredBackend = BACKEND_AUTO;
diff --git a/src/dusk/imgui/ImGuiPreLaunchWindow.hpp b/src/dusk/imgui/ImGuiPreLaunchWindow.hpp
index 5d16a6ba0b..6cb078a228 100644
--- a/src/dusk/imgui/ImGuiPreLaunchWindow.hpp
+++ b/src/dusk/imgui/ImGuiPreLaunchWindow.hpp
@@ -18,5 +18,6 @@ public:
 
     std::string m_selectedIsoPath;
     std::string m_errorString;
+    bool m_isPal = false;
 };
 }  // namespace dusk
diff --git a/src/dusk/iso_validate.cpp b/src/dusk/iso_validate.cpp
index 0b4a19ae9c..e83b3fd34e 100644
--- a/src/dusk/iso_validate.cpp
+++ b/src/dusk/iso_validate.cpp
@@ -17,6 +17,11 @@ constexpr const char* TP_GAME_IDS[] = {
     "RZDK01", // Wii KOR
 };
 
+constexpr const char* PAL_GAME_IDS[] = {
+    "GZ2P01", // GCN PAL
+    "RZDP01", // Wii PAL
+};
+
 constexpr const char* SUPPORTED_TP_GAME_IDS[] = {
     "GZ2E01", // GCN USA
     "GZ2P01", // GCN PAL
@@ -124,4 +129,30 @@ ValidationError validate(const char* path) {
 
     return ValidationError::Success;
 }
+bool isPal(const char* path) {
+    NodHandleWrapper disc;
+
+    const auto sdlStream = SDL_IOFromFile(path, "rb");
+    if (sdlStream == nullptr) {
+        return false;
+    }
+
+    const NodDiscStream nod_stream{
+        .user_data = sdlStream,
+        .read_at = StreamReadAt,
+        .stream_len = StreamLength,
+        .close = StreamClose,
+    };
+
+    if (nod_disc_open_stream(&nod_stream, nullptr, &disc.handle) != NOD_RESULT_OK || disc.handle == nullptr) {
+        return false;
+    }
+
+    NodDiscHeader header{};
+    if (nod_disc_header(disc.handle, &header) != NOD_RESULT_OK) {
+        return false;
+    }
+
+    return matches(header.game_id, PAL_GAME_IDS);
+}
 }  // namespace dusk::iso
\ No newline at end of file
diff --git a/src/dusk/iso_validate.hpp b/src/dusk/iso_validate.hpp
index da1ef1f2a6..d961f052cd 100644
--- a/src/dusk/iso_validate.hpp
+++ b/src/dusk/iso_validate.hpp
@@ -13,6 +13,7 @@ namespace dusk::iso {
     };
 
     ValidationError validate(const char* path);
+    bool isPal(const char* path);
 }
 
 #endif  // DUSK_ISO_VALIDATE_HPP