ADDED: NEW PLATFORM: SDL (DESKTOP) `rcore_desktop_sdl` #3313

2 files changed, 769 insertions, 8 deletions

diff --git a/src/rcore.c b/src/rcore.c
index f94731f9..b813b019 100644
--- a/src/rcore.c
+++ b/src/rcore.c
@@ -3,14 +3,18 @@
 *   rcore - Window/display management, Graphic device/context management and input management
 *
 *   PLATFORMS SUPPORTED:
-*       - PLATFORM_DESKTOP: Windows (Win32, Win64)
-*       - PLATFORM_DESKTOP: Linux (X11 desktop mode)
-*       - PLATFORM_DESKTOP: FreeBSD, OpenBSD, NetBSD, DragonFly (X11 desktop)
-*       - PLATFORM_DESKTOP: OSX/macOS
-*       - PLATFORM_WEB:     HTML5 (WebAssembly)
-*       - PLATFORM_DRM:     Raspberry Pi 0-5
-*       - PLATFORM_DRM:     Linux native mode (KMS driver)
-*       - PLATFORM_ANDROID: Android (ARM, ARM64)
+*       - PLATFORM_DESKTOP: 
+*           > Windows (Win32, Win64)
+*           > Linux (X11/Wayland desktop mode)
+*           > macOS/OSX (x64, arm64)
+*           > FreeBSD, OpenBSD, NetBSD, DragonFly (X11 desktop)
+*       - PLATFORM_WEB:     
+*           > HTML5 (WebAssembly)
+*       - PLATFORM_DRM:     
+*           > Raspberry Pi 0-5
+*           > Linux native mode (KMS driver)
+*       - PLATFORM_ANDROID: 
+*           > Android (ARM, ARM64)
 *
 *   CONFIGURATION:
 *       #define SUPPORT_DEFAULT_FONT (default)
@@ -303,6 +307,8 @@ const char *TextFormat(const char *text, ...);       // Formatting of text with
 // Include platform-specific submodules
 #if defined(PLATFORM_DESKTOP)
     #include "rcore_desktop.c"
+#elif defined(PLATFORM_DESKTOP_SDL)
+    #include "rcore_desktop_sdl.c" 
 #elif defined(PLATFORM_WEB)
     #include "rcore_web.c"
 #elif defined(PLATFORM_DRM)
diff --git a/src/rcore_desktop_sdl.c b/src/rcore_desktop_sdl.c
new file mode 100644
index 00000000..e85d1896
--- /dev/null
+++ b/src/rcore_desktop_sdl.c
@@ -0,0 +1,755 @@
+/**********************************************************************************************
+*
+*   rcore_desktop_sdl - Functions to manage window, graphics device and inputs
+*
+*   PLATFORM: DESKTOP: SDL
+*       - Windows (Win32, Win64)
+*       - Linux (X11/Wayland desktop mode)
+*       - FreeBSD, OpenBSD, NetBSD, DragonFly (X11 desktop)
+*       - OSX/macOS (x64, arm64)
+*
+*   LIMITATIONS:
+*       - Limitation 01
+*       - Limitation 02
+*
+*   POSSIBLE IMPROVEMENTS:
+*       - Improvement 01
+*       - Improvement 02
+*
+*   ADDITIONAL NOTES:
+*       - TRACELOG() function is located in raylib [utils] module
+*
+*   CONFIGURATION:
+*       #define RCORE_PLATFORM_CUSTOM_FLAG
+*           Custom flag for rcore on target platform -not used-
+*
+*   DEPENDENCIES:
+*       - SDL 2 (main library)
+*       - Dependency 02
+*
+*
+*   LICENSE: zlib/libpng
+*
+*   Copyright (c) 2013-2023 Ramon Santamaria (@raysan5) and contributors
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+**********************************************************************************************/
+
+#include "rcore.h"
+
+#include "SDL.h"            // SDL base library (window/rendered, input, timming... functionality)
+#include "SDL_opengl.h"     // SDL OpenGL functionality (if required, instead of internal renderer)
+
+//----------------------------------------------------------------------------------
+// Types and Structures Definition
+//----------------------------------------------------------------------------------
+typedef struct {
+    SDL_Window *window;
+    SDL_GLContext glContext;
+    
+    SDL_Joystick *gamepad;
+} PlatformData;
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+extern CoreData CORE;                   // Global CORE state context
+
+static PlatformData platform = { 0 };   // Platform specific data
+
+//----------------------------------------------------------------------------------
+// Module Internal Functions Declaration
+//----------------------------------------------------------------------------------
+static int InitPlatform(void);          // Initialize platform (graphics, inputs and more)
+static void ClosePlatform(void);        // Close platform
+
+//----------------------------------------------------------------------------------
+// Module Functions Declaration
+//----------------------------------------------------------------------------------
+// NOTE: Functions declaration is provided by raylib.h
+
+//----------------------------------------------------------------------------------
+// Module Functions Definition: Window and Graphics Device
+//----------------------------------------------------------------------------------
+
+// Initialize window and OpenGL context
+// NOTE: data parameter could be used to pass any kind of required data to the initialization
+void InitWindow(int width, int height, const char *title)
+{
+    TRACELOG(LOG_INFO, "Initializing raylib %s", RAYLIB_VERSION);
+
+    TRACELOG(LOG_INFO, "Supported raylib modules:");
+    TRACELOG(LOG_INFO, "    > rcore:..... loaded (mandatory)");
+    TRACELOG(LOG_INFO, "    > rlgl:...... loaded (mandatory)");
+#if defined(SUPPORT_MODULE_RSHAPES)
+    TRACELOG(LOG_INFO, "    > rshapes:... loaded (optional)");
+#else
+    TRACELOG(LOG_INFO, "    > rshapes:... not loaded (optional)");
+#endif
+#if defined(SUPPORT_MODULE_RTEXTURES)
+    TRACELOG(LOG_INFO, "    > rtextures:. loaded (optional)");
+#else
+    TRACELOG(LOG_INFO, "    > rtextures:. not loaded (optional)");
+#endif
+#if defined(SUPPORT_MODULE_RTEXT)
+    TRACELOG(LOG_INFO, "    > rtext:..... loaded (optional)");
+#else
+    TRACELOG(LOG_INFO, "    > rtext:..... not loaded (optional)");
+#endif
+#if defined(SUPPORT_MODULE_RMODELS)
+    TRACELOG(LOG_INFO, "    > rmodels:... loaded (optional)");
+#else
+    TRACELOG(LOG_INFO, "    > rmodels:... not loaded (optional)");
+#endif
+#if defined(SUPPORT_MODULE_RAUDIO)
+    TRACELOG(LOG_INFO, "    > raudio:.... loaded (optional)");
+#else
+    TRACELOG(LOG_INFO, "    > raudio:.... not loaded (optional)");
+#endif
+
+    // Initialize window data
+    CORE.Window.screen.width = width;
+    CORE.Window.screen.height = height;
+    CORE.Window.eventWaiting = false;
+    CORE.Window.screenScale = MatrixIdentity();     // No draw scaling required by default
+    if ((title != NULL) && (title[0] != 0)) CORE.Window.title = title;
+
+    // Initialize global input state
+    memset(&CORE.Input, 0, sizeof(CORE.Input));     // Reset CORE.Input structure to 0
+    CORE.Input.Keyboard.exitKey = KEY_ESCAPE;
+    CORE.Input.Mouse.scale = (Vector2){ 1.0f, 1.0f };
+    CORE.Input.Mouse.cursor = MOUSE_CURSOR_ARROW;
+    CORE.Input.Gamepad.lastButtonPressed = GAMEPAD_BUTTON_UNKNOWN;
+    
+    // Initialize platform
+    //--------------------------------------------------------------   
+    InitPlatform();
+    //--------------------------------------------------------------
+    
+    // Initialize rlgl default data (buffers and shaders)
+    // NOTE: CORE.Window.currentFbo.width and CORE.Window.currentFbo.height not used, just stored as globals in rlgl
+    rlglInit(CORE.Window.currentFbo.width, CORE.Window.currentFbo.height);
+
+    // Setup default viewport
+    SetupViewport(CORE.Window.currentFbo.width, CORE.Window.currentFbo.height);
+
+#if defined(SUPPORT_MODULE_RTEXT) && defined(SUPPORT_DEFAULT_FONT)
+    // Load default font
+    // WARNING: External function: Module required: rtext
+    LoadFontDefault();
+    #if defined(SUPPORT_MODULE_RSHAPES)
+    // Set font white rectangle for shapes drawing, so shapes and text can be batched together
+    // WARNING: rshapes module is required, if not available, default internal white rectangle is used
+    Rectangle rec = GetFontDefault().recs[95];
+    if (CORE.Window.flags & FLAG_MSAA_4X_HINT)
+    {
+        // NOTE: We try to maxime rec padding to avoid pixel bleeding on MSAA filtering
+        SetShapesTexture(GetFontDefault().texture, (Rectangle){ rec.x + 2, rec.y + 2, 1, 1 });
+    }
+    else
+    {
+        // NOTE: We set up a 1px padding on char rectangle to avoid pixel bleeding
+        SetShapesTexture(GetFontDefault().texture, (Rectangle){ rec.x + 1, rec.y + 1, rec.width - 2, rec.height - 2 });
+    }
+    #endif
+#else
+    #if defined(SUPPORT_MODULE_RSHAPES)
+    // Set default texture and rectangle to be used for shapes drawing
+    // NOTE: rlgl default texture is a 1x1 pixel UNCOMPRESSED_R8G8B8A8
+    Texture2D texture = { rlGetTextureIdDefault(), 1, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 };
+    SetShapesTexture(texture, (Rectangle){ 0.0f, 0.0f, 1.0f, 1.0f });    // WARNING: Module required: rshapes
+    #endif
+#endif
+#if defined(SUPPORT_MODULE_RTEXT) && defined(SUPPORT_DEFAULT_FONT)
+    if ((CORE.Window.flags & FLAG_WINDOW_HIGHDPI) > 0)
+    {
+        // Set default font texture filter for HighDPI (blurry)
+        // RL_TEXTURE_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps
+        rlTextureParameters(GetFontDefault().texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_LINEAR);
+        rlTextureParameters(GetFontDefault().texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_LINEAR);
+    }
+#endif
+
+    // Initialize random seed
+    SetRandomSeed((unsigned int)time(NULL));
+
+#if defined(SUPPORT_EVENTS_AUTOMATION)
+    events = (AutomationEvent *)RL_CALLOC(MAX_CODE_AUTOMATION_EVENTS, sizeof(AutomationEvent));
+    CORE.Time.frameCounter = 0;
+#endif
+
+    TRACELOG(LOG_INFO, "PLATFORM: CUSTOM: Application initialized successfully");
+}
+
+// Close window and unload OpenGL context
+void CloseWindow(void)
+{
+#if defined(SUPPORT_GIF_RECORDING)
+    if (gifRecording)
+    {
+        MsfGifResult result = msf_gif_end(&gifState);
+        msf_gif_free(result);
+        gifRecording = false;
+    }
+#endif
+
+#if defined(SUPPORT_MODULE_RTEXT) && defined(SUPPORT_DEFAULT_FONT)
+    UnloadFontDefault();        // WARNING: Module required: rtext
+#endif
+
+    rlglClose();                // De-init rlgl
+
+    // De-initialize platform
+    //--------------------------------------------------------------   
+    ClosePlatform();
+    //--------------------------------------------------------------
+
+#if defined(SUPPORT_EVENTS_AUTOMATION)
+    RL_FREE(events);
+#endif
+
+    CORE.Window.ready = false;
+    TRACELOG(LOG_INFO, "Window closed successfully");
+}
+
+// Check if application should close
+bool WindowShouldClose(void)
+{
+    if (CORE.Window.ready) return CORE.Window.shouldClose;
+    else return true;
+}
+
+// Toggle fullscreen mode
+void ToggleFullscreen(void)
+{
+    //SDL_SetWindowFullscreen
+}
+
+// Toggle borderless windowed mode
+void ToggleBorderlessWindowed(void)
+{
+    //SDL_SetWindowFullscreen
+}
+
+// Set window state: maximized, if resizable
+void MaximizeWindow(void)
+{
+    SDL_MaximizeWindow(platform.window);
+    CORE.Window.flags |= FLAG_WINDOW_MAXIMIZED;
+}
+
+// Set window state: minimized
+void MinimizeWindow(void)
+{
+    SDL_MinimizeWindow(platform.window);
+    CORE.Window.flags |= FLAG_WINDOW_MINIMIZED;
+}
+
+// Set window state: not minimized/maximized
+void RestoreWindow(void)
+{
+    SDL_ShowWindow(platform.window);
+}
+
+// Set window configuration state using flags
+void SetWindowState(unsigned int flags)
+{
+    //SDL_HideWindow(platform.window);
+}
+
+// Clear window configuration state flags
+void ClearWindowState(unsigned int flags)
+{
+    TRACELOG(LOG_WARNING, "ClearWindowState() not available on target platform");
+}
+
+// Set icon for window
+void SetWindowIcon(Image image)
+{
+    TRACELOG(LOG_WARNING, "SetWindowIcon() not available on target platform");
+}
+
+// Set icon for window
+void SetWindowIcons(Image *images, int count)
+{
+    TRACELOG(LOG_WARNING, "SetWindowIcons() not available on target platform");
+}
+
+// Set title for window
+void SetWindowTitle(const char *title)
+{
+    CORE.Window.title = title;
+}
+
+// Set window position on screen (windowed mode)
+void SetWindowPosition(int x, int y)
+{
+    TRACELOG(LOG_WARNING, "SetWindowPosition() not available on target platform");
+}
+
+// Set monitor for the current window
+void SetWindowMonitor(int monitor)
+{
+    TRACELOG(LOG_WARNING, "SetWindowMonitor() not available on target platform");
+}
+
+// Set window minimum dimensions (FLAG_WINDOW_RESIZABLE)
+void SetWindowMinSize(int width, int height)
+{
+    CORE.Window.screenMin.width = width;
+    CORE.Window.screenMin.height = height;
+}
+
+// Set window maximum dimensions (FLAG_WINDOW_RESIZABLE)
+void SetWindowMaxSize(int width, int height)
+{
+    CORE.Window.screenMax.width = width;
+    CORE.Window.screenMax.height = height;
+}
+
+// Set window dimensions
+void SetWindowSize(int width, int height)
+{
+    TRACELOG(LOG_WARNING, "SetWindowSize() not available on target platform");
+}
+
+// Set window opacity, value opacity is between 0.0 and 1.0
+void SetWindowOpacity(float opacity)
+{
+    TRACELOG(LOG_WARNING, "SetWindowOpacity() not available on target platform");
+}
+
+// Set window focused
+void SetWindowFocused(void)
+{
+    TRACELOG(LOG_WARNING, "SetWindowFocused() not available on target platform");
+}
+
+// Get native window handle
+void *GetWindowHandle(void)
+{
+    TRACELOG(LOG_WARNING, "GetWindowHandle() not implemented on target platform");
+    return NULL;
+}
+
+// Get number of monitors
+int GetMonitorCount(void)
+{
+    TRACELOG(LOG_WARNING, "GetMonitorCount() not implemented on target platform");
+    return 1;
+}
+
+// Get number of monitors
+int GetCurrentMonitor(void)
+{
+    TRACELOG(LOG_WARNING, "GetCurrentMonitor() not implemented on target platform");
+    return 0;
+}
+
+// Get selected monitor position
+Vector2 GetMonitorPosition(int monitor)
+{
+    TRACELOG(LOG_WARNING, "GetMonitorPosition() not implemented on target platform");
+    return (Vector2){ 0, 0 };
+}
+
+// Get selected monitor width (currently used by monitor)
+int GetMonitorWidth(int monitor)
+{
+    TRACELOG(LOG_WARNING, "GetMonitorWidth() not implemented on target platform");
+    return 0;
+}
+
+// Get selected monitor height (currently used by monitor)
+int GetMonitorHeight(int monitor)
+{
+    TRACELOG(LOG_WARNING, "GetMonitorHeight() not implemented on target platform");
+    return 0;
+}
+
+// Get selected monitor physical width in millimetres
+int GetMonitorPhysicalWidth(int monitor)
+{
+    TRACELOG(LOG_WARNING, "GetMonitorPhysicalWidth() not implemented on target platform");
+    return 0;
+}
+
+// Get selected monitor physical height in millimetres
+int GetMonitorPhysicalHeight(int monitor)
+{
+    TRACELOG(LOG_WARNING, "GetMonitorPhysicalHeight() not implemented on target platform");
+    return 0;
+}
+
+// Get selected monitor refresh rate
+int GetMonitorRefreshRate(int monitor)
+{
+    TRACELOG(LOG_WARNING, "GetMonitorRefreshRate() not implemented on target platform");
+    return 0;
+}
+
+// Get the human-readable, UTF-8 encoded name of the selected monitor
+const char *GetMonitorName(int monitor)
+{
+    TRACELOG(LOG_WARNING, "GetMonitorName() not implemented on target platform");
+    return "";
+}
+
+// Get window position XY on monitor
+Vector2 GetWindowPosition(void)
+{
+    TRACELOG(LOG_WARNING, "GetWindowPosition() not implemented on target platform");
+    return (Vector2){ 0, 0 };
+}
+
+// Get window scale DPI factor for current monitor
+Vector2 GetWindowScaleDPI(void)
+{
+    TRACELOG(LOG_WARNING, "GetWindowScaleDPI() not implemented on target platform");
+    return (Vector2){ 1.0f, 1.0f };
+}
+
+// Set clipboard text content
+void SetClipboardText(const char *text)
+{
+    TRACELOG(LOG_WARNING, "SetClipboardText() not implemented on target platform");
+}
+
+// Get clipboard text content
+// NOTE: returned string is allocated and freed by GLFW
+const char *GetClipboardText(void)
+{
+    TRACELOG(LOG_WARNING, "GetClipboardText() not implemented on target platform");
+    return NULL;
+}
+
+// Show mouse cursor
+void ShowCursor(void)
+{
+    CORE.Input.Mouse.cursorHidden = false;
+}
+
+// Hides mouse cursor
+void HideCursor(void)
+{
+    CORE.Input.Mouse.cursorHidden = true;
+}
+
+// Enables cursor (unlock cursor)
+void EnableCursor(void)
+{
+    // Set cursor position in the middle
+    SetMousePosition(CORE.Window.screen.width/2, CORE.Window.screen.height/2);
+
+    CORE.Input.Mouse.cursorHidden = false;
+}
+
+// Disables cursor (lock cursor)
+void DisableCursor(void)
+{
+    // Set cursor position in the middle
+    SetMousePosition(CORE.Window.screen.width/2, CORE.Window.screen.height/2);
+
+    CORE.Input.Mouse.cursorHidden = true;
+}
+
+// Swap back buffer with front buffer (screen drawing)
+void SwapScreenBuffer(void)
+{
+    SDL_GL_SwapWindow(platform.window);
+}
+
+//----------------------------------------------------------------------------------
+// Module Functions Definition: Misc
+//----------------------------------------------------------------------------------
+
+// Get elapsed time measure in seconds
+double GetTime(void)
+{
+    unsigned int ms = SDL_GetTicks();    // Elapsed time in milliseconds since SDL_Init()
+    double time = (double)ms/1000; 
+    return time;
+}
+
+// Open URL with default system browser (if available)
+void OpenURL(const char *url)
+{
+    SDL_OpenURL(url);
+}
+
+//----------------------------------------------------------------------------------
+// Module Functions Definition: Inputs
+//----------------------------------------------------------------------------------
+
+// Set internal gamepad mappings
+int SetGamepadMappings(const char *mappings)
+{
+    TRACELOG(LOG_WARNING, "SetGamepadMappings() not implemented on target platform");
+    return 0;
+}
+
+// Set mouse position XY
+void SetMousePosition(int x, int y)
+{
+    CORE.Input.Mouse.currentPosition = (Vector2){ (float)x, (float)y };
+    CORE.Input.Mouse.previousPosition = CORE.Input.Mouse.currentPosition;
+}
+
+// Set mouse cursor
+void SetMouseCursor(int cursor)
+{
+    TRACELOG(LOG_WARNING, "SetMouseCursor() not implemented on target platform");
+}
+
+// Register all input events
+void PollInputEvents(void)
+{
+#if defined(SUPPORT_GESTURES_SYSTEM)
+    // NOTE: Gestures update must be called every frame to reset gestures correctly
+    // because ProcessGestureEvent() is just called on an event, not every frame
+    UpdateGestures();
+#endif
+
+    // Reset keys/chars pressed registered
+    CORE.Input.Keyboard.keyPressedQueueCount = 0;
+    CORE.Input.Keyboard.charPressedQueueCount = 0;
+
+    // Reset key repeats
+    for (int i = 0; i < MAX_KEYBOARD_KEYS; i++) CORE.Input.Keyboard.keyRepeatInFrame[i] = 0;
+
+    // Reset last gamepad button/axis registered state
+    CORE.Input.Gamepad.lastButtonPressed = GAMEPAD_BUTTON_UNKNOWN;
+    for (int i = 0; i < MAX_GAMEPADS; i++) CORE.Input.Gamepad.axisCount[i] = 0;
+
+    // Register previous touch states
+    for (int i = 0; i < MAX_TOUCH_POINTS; i++) CORE.Input.Touch.previousTouchState[i] = CORE.Input.Touch.currentTouchState[i];
+
+    // Reset touch positions
+    // TODO: It resets on target platform the mouse position and not filled again until a move-event,
+    // so, if mouse is not moved it returns a (0, 0) position... this behaviour should be reviewed!
+    //for (int i = 0; i < MAX_TOUCH_POINTS; i++) CORE.Input.Touch.position[i] = (Vector2){ 0, 0 };
+
+    // Register previous keys states
+    // NOTE: Android supports up to 260 keys
+    for (int i = 0; i < 260; i++)
+    {
+        CORE.Input.Keyboard.previousKeyState[i] = CORE.Input.Keyboard.currentKeyState[i];
+        CORE.Input.Keyboard.keyRepeatInFrame[i] = 0;
+    }
+
+    // Poll input events for current plaform
+    //-----------------------------------------------------------------------------
+    /*
+    // WARNING: Indexes into this array are obtained by using SDL_Scancode values, not SDL_Keycode values
+    const Uint8 *keys = SDL_GetKeyboardState(NULL);
+    for (int i = 0; i < 256; ++i)
+    {
+        CORE.Input.Keyboard.currentKeyState[i] = keys[i];
+        //if (keys[i]) TRACELOG(LOG_WARNING, "Pressed key: %i", i);
+    }
+    */
+
+    SDL_Event event = { 0 };
+    while (SDL_PollEvent(&event) != 0)
+    {
+        // All input events can be processed after polling
+        switch (event.type)
+        {
+            case SDL_QUIT: CORE.Window.shouldClose = true; break;
+
+            // Window events are also polled (Minimized, maximized, close...)
+            case SDL_WINDOWEVENT:
+            {
+                switch (event.window.event)
+                {
+                case SDL_WINDOWEVENT_LEAVE:
+                case SDL_WINDOWEVENT_HIDDEN:
+                case SDL_WINDOWEVENT_MINIMIZED:
+                case SDL_WINDOWEVENT_FOCUS_LOST:
+                case SDL_WINDOWEVENT_ENTER:
+                case SDL_WINDOWEVENT_SHOWN:
+                case SDL_WINDOWEVENT_FOCUS_GAINED:
+                case SDL_WINDOWEVENT_MAXIMIZED:
+                case SDL_WINDOWEVENT_RESTORED:
+                default: break;
+                }
+            } break;
+
+            // Keyboard events
+            case SDL_KEYDOWN:
+            {
+                CORE.Input.Keyboard.currentKeyState[event.key.keysym.sym] = 1;
+
+                if (event.key.keysym.sym == SDLK_ESCAPE)
+                {
+                    CORE.Window.shouldClose = true;
+                }
+            } break;
+            case SDL_KEYUP: break;
+
+            // Check mouse events
+            case SDL_MOUSEBUTTONDOWN: 
+            {
+                CORE.Input.Mouse.currentButtonState[event.button.button - 1] = 1;
+            } break;
+            case SDL_MOUSEBUTTONUP: break;
+            case SDL_MOUSEWHEEL: 
+            {
+                CORE.Input.Mouse.currentWheelMove.x = (float)event.wheel.x;
+                CORE.Input.Mouse.currentWheelMove.y = (float)event.wheel.y;
+            } break;
+            case SDL_MOUSEMOTION:
+            {
+                CORE.Input.Mouse.currentPosition.x = (float)event.motion.x;
+                CORE.Input.Mouse.currentPosition.y = (float)event.motion.y;
+            } break;
+
+            // Check gamepad events
+            case SDL_JOYAXISMOTION:
+            {
+                // Motion on gamepad 0
+                if (event.jaxis.which == 0)
+                {
+                    // X axis motion
+                    if (event.jaxis.axis == 0)
+                    {
+                        //...
+                    }
+                    // Y axis motion
+                    else if (event.jaxis.axis == 1)
+                    {
+                        //...
+                    }
+                }
+            } break;
+            default: break;
+        }
+    }
+    //-----------------------------------------------------------------------------
+}
+
+
+//----------------------------------------------------------------------------------
+// Module Internal Functions Definition
+//----------------------------------------------------------------------------------
+
+// Initialize platform: graphics, inputs and more
+static int InitPlatform(void)
+{
+    // Initialize SDL internal global state
+    int result = SDL_Init(SDL_INIT_EVERYTHING);
+    if (result < 0) { TRACELOG(LOG_WARNING, "SDL: Failed to initialize SDL"); return -1; }
+    
+    unsigned int flags = 0;
+    flags |= SDL_WINDOW_SHOWN;
+    flags |= SDL_WINDOW_OPENGL;
+    flags |= SDL_WINDOW_INPUT_FOCUS;
+    flags |= SDL_WINDOW_MOUSE_FOCUS;
+    flags |= SDL_WINDOW_MOUSE_CAPTURE;  // Window has mouse captured
+
+    // Check window creation flags
+    if ((CORE.Window.flags & FLAG_FULLSCREEN_MODE) > 0) 
+    {
+        CORE.Window.fullscreen = true;
+        flags |= SDL_WINDOW_FULLSCREEN;
+    }
+    
+    //if ((CORE.Window.flags & FLAG_WINDOW_HIDDEN) == 0) flags |= SDL_WINDOW_HIDDEN;
+    if ((CORE.Window.flags & FLAG_WINDOW_UNDECORATED) > 0) flags |= SDL_WINDOW_BORDERLESS;
+    if ((CORE.Window.flags & FLAG_WINDOW_RESIZABLE) > 0) flags |= SDL_WINDOW_RESIZABLE;
+    if ((CORE.Window.flags & FLAG_WINDOW_MINIMIZED) > 0) flags |= SDL_WINDOW_MINIMIZED;
+    if ((CORE.Window.flags & FLAG_WINDOW_MAXIMIZED) > 0) flags |= SDL_WINDOW_MAXIMIZED;
+
+    if ((CORE.Window.flags & FLAG_WINDOW_UNFOCUSED) > 0)
+    {
+        flags &= ~SDL_WINDOW_INPUT_FOCUS;
+        flags &= ~SDL_WINDOW_MOUSE_FOCUS;
+    }
+
+    if ((CORE.Window.flags & FLAG_WINDOW_TOPMOST) > 0) flags |= SDL_WINDOW_ALWAYS_ON_TOP;
+    if ((CORE.Window.flags & FLAG_WINDOW_MOUSE_PASSTHROUGH) > 0) flags &= ~SDL_WINDOW_MOUSE_CAPTURE;
+
+    if ((CORE.Window.flags & FLAG_WINDOW_HIGHDPI) > 0) flags |= SDL_WINDOW_ALLOW_HIGHDPI;
+    
+    //if ((CORE.Window.flags & FLAG_WINDOW_TRANSPARENT) > 0) flags |= SDL_WINDOW_TRANSPARENT;     // Alternative: SDL_GL_ALPHA_SIZE = 8
+    
+    //if ((CORE.Window.flags & FLAG_FULLSCREEN_DESKTOP) > 0) flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
+    
+    // NOTE: Some OpenGL context attributes must be set before window creation
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+    //SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG | SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG);
+    if (CORE.Window.flags & FLAG_MSAA_4X_HINT)
+    {
+        SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
+        SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
+    }
+
+    // Init window
+    platform.window = SDL_CreateWindow(CORE.Window.title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, CORE.Window.screen.width, CORE.Window.screen.height, flags);
+    
+    // Init OpenGL context
+    platform.glContext = SDL_GL_CreateContext(platform.window);
+    
+    // Check window and glContext have been initialized succesfully
+    if ((platform.window != NULL) && (platform.glContext != NULL)) 
+    {
+        CORE.Window.ready = true;
+
+        CORE.Window.render.width = CORE.Window.screen.width;
+        CORE.Window.render.height = CORE.Window.screen.height;
+        CORE.Window.currentFbo.width = CORE.Window.render.width;
+        CORE.Window.currentFbo.height = CORE.Window.render.height;
+
+        TRACELOG(LOG_INFO, "DISPLAY: Device initialized successfully");
+        TRACELOG(LOG_INFO, "    > Display size: %i x %i", CORE.Window.display.width, CORE.Window.display.height);
+        TRACELOG(LOG_INFO, "    > Screen size:  %i x %i", CORE.Window.screen.width, CORE.Window.screen.height);
+        TRACELOG(LOG_INFO, "    > Render size:  %i x %i", CORE.Window.render.width, CORE.Window.render.height);
+        TRACELOG(LOG_INFO, "    > Viewport offsets: %i, %i", CORE.Window.renderOffset.x, CORE.Window.renderOffset.y);
+    }
+    else { TRACELOG(LOG_FATAL, "PLATFORM: Failed to initialize graphic device"); return -1; }
+
+    // Load OpenGL extensions
+    // NOTE: GL procedures address loader is required to load extensions
+    rlLoadExtensions(SDL_GL_GetProcAddress);
+
+    
+    // Init input gamepad
+    if (SDL_NumJoysticks() >= 1)
+    {
+        SDL_Joystick *gamepad = SDL_JoystickOpen(0);
+        //if (SDL_Joystick *gamepad == NULL) SDL_Log("WARNING: Unable to open game controller! SDL Error: %s\n", SDL_GetError());
+    }
+    
+    // Initialize hi-res timer
+    //InitTimer();
+    CORE.Time.previous = GetTime();     // Get time as double
+    
+    // Initialize base path for storage
+    CORE.Storage.basePath = GetWorkingDirectory();
+    
+    return 0;
+}
+
+static void ClosePlatform(void)
+{
+    SDL_GL_DeleteContext(platform.glContext); // Deinitialize OpenGL context
+    SDL_DestroyWindow(platform.window);
+    SDL_Quit(); // Deinitialize SDL internal global state
+}
+// EOF