Controller navigation.

UnleashedRecomp/main.cpp

@@ -40,6 +40,8 @@ void HostStartup()
     g_codeCache.Init();
 
     g_memory.Alloc(XMAIOBegin, 0xFFFF, MEM_COMMIT);
+
+    hid::Init();
 }
 
 // Name inspired from nt's entry point
@@ -86,7 +88,6 @@ void KiSystemStartup()
     }
 
     XAudioInitializeSystem();
-    hid::Init();
 }
 
 uint32_t LdrLoadModule(const char* path)

UnleashedRecomp/ui/installer_wizard.cpp

@@ -4,9 +4,11 @@
 
 #include <install/installer.h>
 #include <gpu/video.h>
+#include <hid/hid.h>
 #include <locale/locale.h>
 #include <ui/imgui_utils.h>
 #include <ui/message_window.h>
+#include <ui/sdl_listener.h>
 #include <ui/window.h>
 
 #include <res/images/installer/install_001.dds.h>
@@ -128,6 +130,162 @@ static std::string g_currentMessagePrompt = "";
 static bool g_currentMessagePromptConfirmation = false;
 static int g_currentMessageResult = -1;
 static bool g_currentMessageUpdateRemaining = false;
+static ImVec2 g_joypadAxis = {};
+static int g_currentCursorIndex = -1;
+static int g_currentCursorDefault = 0;
+static bool g_currentCursorAccepted = false;
+static std::vector<std::pair<ImVec2, ImVec2>> g_currentCursorRects;
+
+class SDLEventListenerForInstaller : public SDLEventListener
+{
+public:
+    void OnSDLEvent(SDL_Event *event) override
+    {
+        constexpr float AxisValueRange = 32767.0f;
+        constexpr float AxisTapRange = 0.5f;
+        if (!InstallerWizard::s_isVisible || !g_currentMessagePrompt.empty())
+        {
+            return;
+        }
+
+        ImVec2 tapDirection = {};
+        switch (event->type)
+        {
+        case SDL_KEYDOWN:
+            switch (event->key.keysym.scancode)
+            {
+            case SDL_SCANCODE_LEFT:
+            case SDL_SCANCODE_RIGHT:
+                tapDirection.x = (event->key.keysym.scancode == SDL_SCANCODE_RIGHT) ? 1.0f : -1.0f;
+                break;
+            case SDL_SCANCODE_UP:
+            case SDL_SCANCODE_DOWN:
+                tapDirection.y = (event->key.keysym.scancode == SDL_SCANCODE_DOWN) ? 1.0f : -1.0f;
+                break;
+            case SDL_SCANCODE_RETURN:
+            case SDL_SCANCODE_KP_ENTER:
+                g_currentCursorAccepted = true;
+                break;
+            }
+
+            break;
+        case SDL_CONTROLLERBUTTONDOWN:
+            switch (event->cbutton.button)
+            {
+            case SDL_CONTROLLER_BUTTON_DPAD_LEFT:
+                tapDirection = { -1.0f, 0.0f };
+                break;
+            case SDL_CONTROLLER_BUTTON_DPAD_RIGHT:
+                tapDirection = { 1.0f, 0.0f };
+                break;
+            case SDL_CONTROLLER_BUTTON_DPAD_UP:
+                tapDirection = { 0.0f, -1.0f };
+                break;
+            case SDL_CONTROLLER_BUTTON_DPAD_DOWN:
+                tapDirection = { 0.0f, 1.0f };
+                break;
+            case SDL_CONTROLLER_BUTTON_A:
+                g_currentCursorAccepted = true;
+                break;
+            }
+
+            break;
+        case SDL_CONTROLLERAXISMOTION:
+        {
+            if (event->caxis.axis < 2)
+            {
+                float newAxisValue = event->caxis.value / AxisValueRange;
+                bool sameDirection = (newAxisValue * g_joypadAxis[event->caxis.axis]) > 0.0f;
+                bool wasInRange = abs(g_joypadAxis[event->caxis.axis]) > AxisTapRange;
+                bool isInRange = abs(newAxisValue) > AxisTapRange;
+                if (sameDirection && !wasInRange && isInRange)
+                {
+                    tapDirection[event->caxis.axis] = newAxisValue;
+                }
+
+                g_joypadAxis[event->caxis.axis] = newAxisValue;
+            }
+
+            break;
+        }
+        case SDL_MOUSEBUTTONDOWN:
+        case SDL_MOUSEMOTION:
+        {
+            g_currentCursorIndex = -1;
+
+            for (size_t i = 0; i < g_currentCursorRects.size(); i++)
+            {
+                auto &currentRect = g_currentCursorRects[i];
+                if (ImGui::IsMouseHoveringRect(currentRect.first, currentRect.second, false))
+                {
+                    g_currentCursorIndex = int(i);
+
+                    if (event->type == SDL_MOUSEBUTTONDOWN && event->button.button == SDL_BUTTON_LEFT)
+                    {
+                        g_currentCursorAccepted = true;
+                    }
+
+                    break;
+                }
+            }
+
+            break;
+        }
+        }
+
+        if (tapDirection.x != 0.0f || tapDirection.y != 0.0f)
+        {
+            int newCursorIndex = -1;
+            if (g_currentCursorIndex >= g_currentCursorRects.size() || g_currentCursorIndex < 0)
+            {
+                newCursorIndex = g_currentCursorDefault;
+            }
+            else
+            {
+                auto &currentRect = g_currentCursorRects[g_currentCursorIndex];
+                ImVec2 currentPoint = ImVec2
+                (
+                    (currentRect.first.x + currentRect.second.x) / 2.0f + tapDirection.x * (currentRect.second.x - currentRect.first.x) / 2.0f,
+                    (currentRect.first.y + currentRect.second.y) / 2.0f + tapDirection.y * (currentRect.second.y - currentRect.first.y) / 2.0f
+                );
+
+                float closestDistance = FLT_MAX;
+                for (size_t i = 0; i < g_currentCursorRects.size(); i++)
+                {
+                    if (g_currentCursorIndex == i)
+                    {
+                        continue;
+                    }
+
+                    auto &targetRect = g_currentCursorRects[i];
+                    ImVec2 targetPoint = ImVec2
+                    (
+                        (targetRect.first.x + targetRect.second.x) / 2.0f + tapDirection.x * (targetRect.first.x - targetRect.second.x) / 2.0f,
+                        (targetRect.first.y + targetRect.second.y) / 2.0f + tapDirection.y * (targetRect.first.y - targetRect.second.y) / 2.0f
+                    );
+
+                    ImVec2 delta = ImVec2(targetPoint.x - currentPoint.x, targetPoint.y - currentPoint.y);
+                    float projectedDistance = delta.x * tapDirection.x + delta.y * tapDirection.y;
+                    float manhattanDistance = abs(delta.x) + abs(delta.y);
+                    if (projectedDistance > 0.0f && manhattanDistance < closestDistance)
+                    {
+                        newCursorIndex = int(i);
+                        closestDistance = manhattanDistance;
+                    }
+                }
+            }
+
+            if (newCursorIndex >= 0)
+            {
+                // TODO: Play sound.
+
+                g_currentCursorIndex = newCursorIndex;
+            }
+        }
+    }
+};
+
+static SDLEventListenerForInstaller g_eventListener;
 
 const char CREDITS_TEXT[] = "- Sajid (RIP)\n- imgui sega balls!";
 
@@ -212,6 +370,38 @@ static double ComputeHermiteMotionInstallerLoop(double timeAppear, double speed,
     return (cosf(M_PI * ComputeMotionInstallerLoop(timeAppear, speed, offset) + M_PI) + 1) / 2;
 }
 
+static bool PushCursorRect(ImVec2 min, ImVec2 max, bool &cursorPressed, bool makeDefault = false)
+{
+    int currentIndex = int(g_currentCursorRects.size());
+    g_currentCursorRects.emplace_back(min, max);
+
+    if (makeDefault)
+    {
+        g_currentCursorDefault = currentIndex;
+    }
+
+    if (g_currentCursorIndex == currentIndex)
+    {
+        if (g_currentCursorAccepted)
+        {
+            cursorPressed = true;
+            g_currentCursorAccepted = false;
+        }
+
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}
+
+static void ResetCursorRects()
+{
+    g_currentCursorDefault = 0;
+    g_currentCursorRects.clear();
+}
+
 static void DrawBackground()
 {
     auto &res = ImGui::GetIO().DisplaySize;
@@ -512,7 +702,7 @@ static ImVec2 ComputeTextSize(ImFont *font, const char *text, float size, float
     return textSize;
 }
 
-static void DrawButton(ImVec2 min, ImVec2 max, const char *buttonText, bool sourceButton, bool buttonEnabled, bool &buttonPressed, float maxTextWidth = FLT_MAX)
+static void DrawButton(ImVec2 min, ImVec2 max, const char *buttonText, bool sourceButton, bool buttonEnabled, bool &buttonPressed, float maxTextWidth = FLT_MAX, bool makeDefault = false)
 {
     buttonPressed = false;
 
@@ -526,14 +716,13 @@ static void DrawButton(ImVec2 min, ImVec2 max, const char *buttonText, bool sour
 
     int baser = 0;
     int baseg = 0;
-    if (g_currentMessagePrompt.empty() && !sourceButton && buttonEnabled && (alpha >= 1.0f) && ImGui::IsMouseHoveringRect(min, max, false))
+    if (g_currentMessagePrompt.empty() && !sourceButton && buttonEnabled && (alpha >= 1.0f))
     {
-        baser = 48;
+        bool cursorOnButton = PushCursorRect(min, max, buttonPressed, makeDefault);
-        baseg = 32;
+        if (cursorOnButton)
-
-        if (ImGui::IsMouseClicked(ImGuiMouseButton_Left))
         {
-            buttonPressed = true;
+            baser = 48;
+            baseg = 32;
         }
     }
 
@@ -794,7 +983,7 @@ static void DrawLanguagePicker()
 
             // TODO: The active button should change its style to show an enabled toggle if it matches the current language.
 
-            DrawButton(min, max, LANGUAGE_TEXT[i], false, true, buttonPressed);
+            DrawButton(min, max, LANGUAGE_TEXT[i], false, true, buttonPressed, FLT_MAX, LANGUAGE_ENUM[i] == ELanguage::English);
             if (buttonPressed)
             {
                 Config::Language = LANGUAGE_ENUM[i];
@@ -1155,6 +1344,7 @@ void InstallerWizard::Draw()
         return;
     }
 
+    ResetCursorRects();
     DrawBackground();
     DrawLeftImage();
     DrawScanlineBars();
@@ -1209,6 +1399,10 @@ bool InstallerWizard::Run(bool skipGame)
 {
     NFD_Init();
 
+    // Guarantee one controller is initialized. We'll rely on SDL's event loop to get the controller events.
+    XAMINPUT_STATE inputState;
+    hid::GetState(0, &inputState);
+
     if (skipGame)
     {
         for (int i = 0; i < int(DLC::Count); i++)