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Hello, I have recently finished my wrapper of SDL2 for Autoit. I've made a couple of example programs as well. I plan to make a few more. You can get it here. https://github.com/gAndy50/AuotIt_Wrappers Any feedback is appericated, thanks.

I wanted to start using SDL2 libraries in C++. This is a Hello World project that covers some of the essentials of programming with SDL2. I will use it when I forget how to create an SDL2 project. Loads a scrolling background image for world. Mouse position, left click, and double click example. Hotkeys and cooldown timers to prevent hotkey spam. Plays background music. (ALT + P) Plays sound effects changing sprite type. (numpad: /, *, -, +) Features a Player class for multiplayer. Player collision detection. Uses a Window class from Lazyfoo for maximize button, fullscreen ext.. Built using MSVS 2013 (free). All dlls and libraries included and linked (for MSVS) using relative paths. You can probably run the SDL2_HelloWorld.sln without setting up any libraries. Note SDL_Net is setup but not used. Delta time used to create consistent frame rate across machines. Player animation sprite sheet: Demo: Slimy's First Kiss Download Source and project: http://songersoft.com/programming/sdl2_helloworld/sdl2_helloworld_about.phtml This isn't meant to be amazing. It's just to help get started with SDL2. I will consider any criticism. main.cpp // This example HelloWorld followed this video: // https://www.youtube.com/watch?v=M4Jgz0wEQxY // Turned into this // https://www.youtube.com/watch?v=yRpen8jOa08&list=PL77-op_SRaiEuC0YC43ZAUJJwL_G_C2z8&index=15 // Window class was copied from Lazyfoo // http://lazyfoo.net/tutorials/SDL/35_window_events/index.php #include <iostream> #include <string> #include "SDL.h" #include "SDL_image.h" #include "SDL_ttf.h" #include "SDL_mixer.h" #include "SDL_net.h" #include "Player.h" #include "Window.h" using namespace std; // Prototypes SDL_Texture *LoadTexture(string filepath, SDL_Renderer *renderTarget); void logSDLError(const string); SDL_Rect sdlrect(int, int, int, int); SDL_Surface *OptimizedSurface(string filepath, SDL_Surface *windowSurface); // if(okAlt) either Alt key is pressed OrKeyALT #define okAlt (k[SDL_SCANCODE_RALT] || k[SDL_SCANCODE_LALT]) int main(int argc, char *argv[]) { // Needed for the initialize block Window window; SDL_Renderer *renderTarget = nullptr; // Initialize SDL2 if (SDL_Init(SDL_INIT_EVERYTHING) < 0) { logSDLError("SDL_Init "); } // Initialize SDL_image if (!(IMG_Init(IMG_INIT_PNG) & IMG_INIT_PNG)) { cout << "Could not initialize SDL_image: " << IMG_GetError() << std::endl; SDL_Delay(5500); } // Initialize TTF if (TTF_Init() < 0) cout << "TTF_Init " << TTF_GetError() << endl; //Create window if (!window.init("SDL2 Hello World", 640, 480, "../../Graphics/iconbmp.bmp")) { printf("Window could not be created! SDL Error: %s\n", SDL_GetError()); } else { //Create renderer for window renderTarget = window.createRenderer(); if (renderTarget == NULL) { printf("Renderer could not be created! SDL Error: %s\n", SDL_GetError()); } } // Audio if (Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 2048) < 0) { cout << "Mix_OpenAudio: " << Mix_GetError() << endl; } // Load sounds: Run chunk if less than 10 sec, music if greater (generally) //Mix_Music *bgm = Mix_LoadMUS("../../Sounds/overworld.mid"); // Can't Pause MIDI Mix_Music *bgm = Mix_LoadMUS("../../Sounds/bensound-goinghigher.mp3"); cout << Mix_GetError() << endl; // Font and text SDL_Texture *text_texture = nullptr; SDL_Color textColor = { 144, 77, 255, 255 }; TTF_Font *font = TTF_OpenFont("../../Graphics/Fonts/VCR_OSD_MONO.ttf", 20); if (font) { SDL_Surface *textSurf = TTF_RenderText_Solid(font, "Hello world", textColor); text_texture = SDL_CreateTextureFromSurface(renderTarget, textSurf); SDL_FreeSurface(textSurf); } else cout << TTF_GetError() << endl; SDL_Rect textRect = { 0, 0, 0, 0 };// Position of text on window // Get the size of the text_texture SDL_QueryTexture(text_texture, NULL, NULL, &textRect.w, &textRect.h); const int playerMax = 8; int players = 2; float prevTime = 0, currentTime = 0, deltaTime = 0; bool fullscreen_toggle = 0; int i = 0, ii = 0; int redraw = 1; bool done = 0; // Load player sprite sheet and background texture SDL_Texture *spritesheet_texture = LoadTexture("../../Graphics/DW3_Char_SpriteSheet.png", renderTarget); SDL_Texture *bg_texture = LoadTexture("../../Graphics/dw3-over.png", renderTarget); int bg_texture_w = 0, bg_texture_h = 0; // Point k to Keyboard state (only needs done here, not in main loop) const Uint8 *k = SDL_GetKeyboardState(NULL); SDL_Event windowEvent; // Stop keys spamming (like music ON / OFF) float key_cooldown_timer_max = 500.0f, key_cooldown_timer = 0; SDL_Rect cameraRect = { 0, 0, window.getWidth(), window.getHeight()}; // Construct default players Player player[playerMax]; // Customize players (texture and position) for (i = 0; i < players; i++)//(sprite texture, position x, position y) player[i].Player_new(spritesheet_texture, window.getWidth() / 2 + i * 16, window.getHeight() / 2); // Get the size of bg_texture SDL_QueryTexture(bg_texture, NULL, NULL, &bg_texture_w, &bg_texture_h); // Main message loop while (!done) { prevTime = currentTime; currentTime = SDL_GetTicks(); deltaTime = (currentTime - prevTime) / 1000.0f; while (SDL_PollEvent(&windowEvent) != 0) { // Check for events if (windowEvent.type == SDL_QUIT) { // Window Exit done = 1; } else if(windowEvent.type == SDL_MOUSEBUTTONDOWN) { // Mouse buttons if (windowEvent.button.clicks == 2) { // Double left click redraw = 1; } else if (windowEvent.button.button == SDL_BUTTON_LEFT) { // Single left click redraw = 1; } // Output mouse position cout << "Mouse: " << windowEvent.button.x << " " << windowEvent.button.y << endl; } }// if(SDL_PollEvent(&windowEvent)) if (okAlt) { // Either ALT key if (k[SDL_SCANCODE_RETURN]) { // ALT + ENTER, toggle fullscreen // Consider matching current window resolution to closest preset array of valid full screen resolutions. fullscreen_toggle = 1; } if (k[SDL_SCANCODE_P]) { if (SDL_GetTicks() - key_cooldown_timer > key_cooldown_timer_max) { // Action cooldown timer is ready. Avoids ON / OFF flicker // Play Music if (!Mix_PlayingMusic()) { cout << "PLAY"; Mix_PlayMusic(bgm, -1); } else if (Mix_PausedMusic()) { cout << "RESUME"; Mix_ResumeMusic(); } else { cout << "PAUSE"; Mix_PauseMusic(); } key_cooldown_timer = SDL_GetTicks(); } }// SDL_SCANCODE_P if (k[SDL_SCANCODE_S]) { // Stop Music Mix_HaltMusic(); } }// okAlt //Handle window events fullscreen_toggle = window.handleEvent(windowEvent, renderTarget, fullscreen_toggle); // Player Update and IntersectsWith for (i = 0; i < players; i++) { player[i].Update(deltaTime, k); for (ii = 0; ii < players; ii++) { if(i != ii)// Not self player[i].IntersectsWith(player[ii]); } } // Camera cameraRect.x = player[0].GetOriginX() - window.getWidth() / 2; cameraRect.y = player[0].GetOriginY() - window.getHeight() / 2; // Normalize if (cameraRect.x < 0) cameraRect.x = 0; if (cameraRect.y < 0) cameraRect.y = 0; if (cameraRect.x + cameraRect.w >= bg_texture_w) cameraRect.x = bg_texture_w - window.getWidth(); if (cameraRect.y + cameraRect.h >= bg_texture_h) cameraRect.y = bg_texture_h - window.getHeight(); redraw = 1; // Don't judge me if (redraw) { // Redraw should definatly pretty much be at the end of loop // Clear window SDL_RenderClear(renderTarget); // Copy camera from bg_texture SDL_RenderCopy(renderTarget, bg_texture, &cameraRect, NULL); // Draw players for (i = 0; i < players; i++) player[i].Draw(renderTarget, cameraRect); // Print text SDL_RenderCopy(renderTarget, text_texture, NULL, &textRect); // Show the rendered content SDL_RenderPresent(renderTarget); redraw = 0; }// if(redraw) }// while(true) // Free windows window.free(); SDL_DestroyTexture(bg_texture); SDL_DestroyTexture(spritesheet_texture); SDL_DestroyTexture(text_texture); TTF_CloseFont(font); // Free Renderers SDL_DestroyRenderer(renderTarget); // Free music Mix_FreeMusic(bgm); // Close systems Mix_Quit(); TTF_Quit(); IMG_Quit(); SDL_Quit(); return EXIT_SUCCESS; }// main() SDL_Texture *LoadTexture(string filepath, SDL_Renderer *renderTarget) { // Create texture SDL_Texture *texture = nullptr; // Load surface SDL_Surface *surface = IMG_Load(filepath.c_str()); if (surface == NULL) { // surface didn't load logSDLError("LoadTexture surface "); } else { SDL_SetColorKey(surface, SDL_TRUE, SDL_MapRGB(surface->format, 0, 0, 0)); texture = SDL_CreateTextureFromSurface(renderTarget, surface); //SDL_SetTextureColorMod(texture, 120, 150, 140); if (texture == NULL) logSDLError("LoadTexture texture "); } SDL_FreeSurface(surface); return texture; } void logSDLError(const string msg){ cout << msg << " Error: " << SDL_GetError() << endl; SDL_Delay(4000); } SDL_Rect sdlrect(int x, int y, int w, int h) { SDL_Rect rect = {x, y, w, h}; return rect; } SDL_Surface *OptimizedSurface(string filepath, SDL_Surface *windowSurface) { SDL_Surface *optimizedSurf = nullptr; SDL_Surface *surface = IMG_Load(filepath.c_str()); if (surface == NULL) { cout << "Error: " << endl; } else { optimizedSurf = SDL_ConvertSurface(surface, windowSurface->format, 0); if (optimizedSurf == NULL) cout << "Error: " << endl; } SDL_FreeSurface(surface); return optimizedSurf; } Player.h #pragma once #include <iostream> #include "SDL.h" #include <String> #include "SDL_mixer.h" using namespace std; enum player_control { ePlayer_control_up, ePlayer_control_down, ePlayer_control_left, ePlayer_control_right, ePlayer_control_type_minus, ePlayer_control_type_plus }; class Player { private: SDL_Rect cropRect; SDL_Texture *texture; int spritesheet_texture_w, spritesheet_texture_h;//size of spritesheet texture bool isActive;//animation timer SDL_Scancode keys[6]; int frame_w, frame_h;//16, 16 float frameTimerMax; float frameTimer;//0..frameTimerMax int frame;//0..1 int frameMax;//2 int way;//0..3 int classType;//0..53 float moveSpeed; float cast_cooldown_max; Mix_Chunk *soundEffect; int originX, originY; int radius; Uint32 key_cooldown_timer; string name; public: void Player_new(SDL_Texture *spritesheet_texture, int x, int y); Player(); ~Player(); void Update(float delta, const Uint8 *keyState); void Draw(SDL_Renderer *renderTarget, SDL_Rect cameraRect); bool IntersectsWith(Player &p); int GetOriginX(); int GetOriginY(); int GetRadius(); SDL_Rect positionRect; }; Player.cpp #pragma once #include "Player.h" #include "SDL_image.h" #include "SDL_mixer.h" #include <iostream> #include <String> #include <cmath> using namespace std; Player::Player() { cropRect = {0, 0, 16, 16}; texture = nullptr; spritesheet_texture_w = spritesheet_texture_h = 0;//size of spritesheet texture isActive = false;//animation timer keys[6]; frame_w = frame_h = 16;//16, 16 frameTimerMax = 0.5f; frameTimer = 0;//0..frameTimerMax frame = 0;//0..1 frameMax = 2;//2 way = 0;//0..3 classType = 0;//0..53 moveSpeed = 200.0f; radius = frame_w / 2; soundEffect = nullptr; key_cooldown_timer = 0; cast_cooldown_max = 190.0f; static int playerNumber = 0; playerNumber++; name = "Player:" + to_string(playerNumber); // Setup keys for player 1 // ** I see the enum didn't exist when this was written ** if (playerNumber == 1) { keys[0] = SDL_SCANCODE_W; keys[1] = SDL_SCANCODE_S; keys[2] = SDL_SCANCODE_A; keys[3] = SDL_SCANCODE_D; keys[4] = SDL_SCANCODE_KP_MINUS; keys[5] = SDL_SCANCODE_KP_PLUS; } else { // Setup keys all other players (not 1) keys[0] = SDL_SCANCODE_UP; keys[1] = SDL_SCANCODE_DOWN; keys[2] = SDL_SCANCODE_LEFT; keys[3] = SDL_SCANCODE_RIGHT; keys[4] = SDL_SCANCODE_KP_DIVIDE; keys[5] = SDL_SCANCODE_KP_MULTIPLY; } }//Player::Player() void Player::Player_new(SDL_Texture *spritesheet_texture, int x, int y) { // This is new player isActive = false; // Read size of spritesheet texture SDL_QueryTexture(spritesheet_texture, NULL, NULL, &spritesheet_texture_w, &spritesheet_texture_h); texture = spritesheet_texture; // spritesheet rect cropRect = { 0, 0, 16, 16 }; // player screen position positionRect = { x, y, 16, 16 }; // Defaults moveSpeed = 200.0f; radius = frame_w / 2; frameTimer = 0; frame = 0; frameMax = 2; way = 0; classType = 0; originX = frame_w / 2; originY = frame_h / 2; soundEffect = Mix_LoadWAV("../../Sounds/whipcrack1.wav"); cout << "Name: " << name << endl; }//Player::Player_new() void Player::Update(float delta, const Uint8 *keyState) { isActive = true; if (keyState[keys[ePlayer_control_up]]) { way = 0; positionRect.y -= moveSpeed * delta; cropRect.x = (way * cropRect.w * frameMax) + (frame * cropRect.w); } if (keyState[keys[ePlayer_control_down]]) { way = 1; positionRect.y += moveSpeed * delta; cropRect.x = (way * cropRect.w * frameMax) + (frame * cropRect.w); } if (keyState[keys[ePlayer_control_left]]) { way = 3; positionRect.x -= moveSpeed * delta; cropRect.x = (way * cropRect.w * frameMax) + (frame * cropRect.w); } if (keyState[keys[ePlayer_control_right]]) { way = 2; positionRect.x += moveSpeed * delta; cropRect.x = (way * cropRect.w * frameMax) + (frame * cropRect.w); } if (keyState[keys[ePlayer_control_type_minus]]) { if (SDL_GetTicks() - key_cooldown_timer > cast_cooldown_max) { key_cooldown_timer = SDL_GetTicks(); Mix_PlayChannel(-1, soundEffect, 0); classType--; if (classType < 0) classType = spritesheet_texture_h / cropRect.h - 1; cropRect.y = classType * cropRect.h; } } if (keyState[keys[ePlayer_control_type_plus]]) { if (SDL_GetTicks() - key_cooldown_timer > cast_cooldown_max) { key_cooldown_timer = SDL_GetTicks(); Mix_PlayChannel(-1, soundEffect, 0); classType++; if (classType >= spritesheet_texture_h / cropRect.h) classType = 0; cropRect.y = classType * cropRect.h; } } if (isActive) { frameTimer += delta; if (frameTimer >= frameTimerMax){ frameTimer = 0; cropRect.x = (way * cropRect.w * frameMax) + (frame * cropRect.w); if (frame >= frameMax - 1) frame = 0; else frame++; } } else { frameTimer = 0; } }//Player::Update() void Player::Draw(SDL_Renderer *renderTarget, SDL_Rect cameraRect) { SDL_Rect drawingRect = { positionRect.x - cameraRect.x, positionRect.y - cameraRect.y, positionRect.w, positionRect.h }; SDL_RenderCopy(renderTarget, texture, &cropRect, &drawingRect); } bool Player::IntersectsWith(Player &p){ if (sqrt(pow(GetOriginX() - p.GetOriginX(), 2) + pow(GetOriginY() - p.GetOriginY(), 2)) >= radius + p.GetRadius()) { SDL_SetTextureColorMod(texture, 255, 255, 255); return false; } SDL_SetTextureColorMod(texture, 255, 0, 0); return true; } Player::~Player() { SDL_DestroyTexture(texture); Mix_FreeChunk(soundEffect); } int Player::GetOriginX() { return positionRect.x + originX; } int Player::GetOriginY() { return positionRect.y + originY; } int Player::GetRadius() { return radius; }

A little try with SDL 2 Library, SDL 2 GFX and Sid music. As usual, no externals files needed. Press "Esc" for quit. SDL2_Fireworks.au3 Happy New Year 2017