[input] replaced per-platform pad readers with sdl gamepad input

2026-07-31 06:59:45 +08:00 · 2026-07-28 01:05:42 +03:00
parent 8987fc396e
commit 5181df82c8
18 changed files with 929 additions and 1564 deletions
@@ -0,0 +1,85 @@
+// Copyright (C) 2026 SharpEmu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+using SharpEmu.HLE.Host;
+using SDL;
+using static SDL.SDL3;
+
+namespace SharpEmu.Libs.Pad;
+
+/// <summary>Cross-platform SDL gamepad polling for launcher navigation.</summary>
+public static unsafe class SdlLauncherGamepad
+{
+    private const SDL_InitFlags InitFlags = SDL_InitFlags.SDL_INIT_GAMEPAD;
+    private static SDL_Gamepad* _gamepad;
+    private static bool _initialized;
+
+    public static void EnsureStarted()
+    {
+        if (_initialized)
+        {
+            return;
+        }
+
+        SdlGamepadStateReader.EnableSonyHidApi();
+        if (!SDL_InitSubSystem(InitFlags))
+        {
+            Console.Error.WriteLine("[GUI][WARN] SDL gamepad initialization failed.");
+            return;
+        }
+
+        _initialized = true;
+        OpenFirstGamepad();
+    }
+
+    public static bool TryGetState(out HostGamepadState state)
+    {
+        state = default;
+        if (!_initialized)
+        {
+            return false;
+        }
+
+        SDL_UpdateGamepads();
+        if (_gamepad is not null && !SDL_GamepadConnected(_gamepad))
+        {
+            SDL_CloseGamepad(_gamepad);
+            _gamepad = null;
+        }
+
+        if (_gamepad is null)
+        {
+            OpenFirstGamepad();
+        }
+
+        if (_gamepad is null)
+        {
+            return false;
+        }
+
+        state = SdlGamepadStateReader.Read(_gamepad);
+        return true;
+    }
+
+    public static void Shutdown()
+    {
+        if (!_initialized)
+        {
+            return;
+        }
+
+        if (_gamepad is not null)
+        {
+            SDL_CloseGamepad(_gamepad);
+            _gamepad = null;
+        }
+
+        SDL_QuitSubSystem(InitFlags);
+        _initialized = false;
+    }
+
+    private static void OpenFirstGamepad()
+    {
+        _gamepad = SdlGamepadStateReader.OpenPreferredGamepad();
+    }
+}