Add wrappers for SDL functions and structs

src/wrappers/sdl/init.cppm

@@ -0,0 +1,62 @@
+module;
+
+#include <type_traits>
+#include <SDL3/SDL.h>
+
+export module wrappers.sdl.init;
+
+import wrappers.sdl.error;
+
+export namespace sdl
+{
+    using InitFlags_t = SDL_InitFlags;
+
+    /**
+     * Wrapper for the SDL_InitFlags enum/constants.
+     *
+     * We're using a namespace here to emulate an enum-like interface. If we used an actual enum, we would have to
+     * explicitly define bit-wise operations for it (as well as for every other kind of bit flag enum.
+     * (Maybe in the future this can be replaced with a more elegant template-based solution or something.)
+     */
+    namespace InitFlags
+    {
+        constexpr InitFlags_t Audio = SDL_INIT_AUDIO;
+        constexpr InitFlags_t Video = SDL_INIT_VIDEO;
+        constexpr InitFlags_t Joystick = SDL_INIT_JOYSTICK;
+        constexpr InitFlags_t Haptic = SDL_INIT_HAPTIC;
+        constexpr InitFlags_t Gamepad = SDL_INIT_GAMEPAD;
+        constexpr InitFlags_t Events = SDL_INIT_EVENTS;
+        constexpr InitFlags_t Sensor = SDL_INIT_SENSOR;
+        constexpr InitFlags_t Camera = SDL_INIT_CAMERA;
+    }
+
+    /**
+     * Wrapper around the SDL_AppResult enum.
+     */
+    enum class AppResult : std::underlying_type_t<SDL_AppResult>
+    {
+        Continue = SDL_APP_CONTINUE,
+        Success = SDL_APP_SUCCESS,
+        Failure = SDL_APP_FAILURE,
+    };
+
+    /**
+     * Wrapper around SDL_Init().
+     */
+    constexpr void Init(const InitFlags_t flags)
+    {
+        if (!SDL_Init(flags)) {
+            throw SDLException("SDL_Init");
+        }
+    }
+
+    /**
+     * Wrapper around SDL_SetAppMetadataProperty().
+     */
+    constexpr void SetAppMetadataProperty(const char* property_name, const char* value)
+    {
+        if (!SDL_SetAppMetadataProperty(property_name, value)) {
+            throw SDLException("SDL_SetAppMetadataProperty");
+        }
+    }
+}