Sdl3 Example -

– Simple bounding-box collision with the window edges. Because the ball is represented by a rectangle for simplicity, we adjust the bounce condition to consider the radius. The velocity vector is inverted on collision, and the ball is repositioned to prevent sticking.

// 5. Main loop while (running) { // Handle events while (SDL_PollEvent(&event)) { if (event.type == SDL_EVENT_QUIT) { running = false; } else if (event.type == SDL_EVENT_KEY_DOWN) { if (event.key.key == SDLK_ESCAPE) { running = false; } } } sdl3 example

// 2. Create a window SDL_Window* window = SDL_CreateWindow("SDL3 Bouncing Ball", WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_RESIZABLE); if (!window) { SDL_Log("SDL_CreateWindow Error: %s", SDL_GetError()); SDL_Quit(); return 1; } – Simple bounding-box collision with the window edges

– We store position and velocity as floats for smooth sub-pixel movement. The key addition in SDL3’s API is the use of SDL_GetTicks() returning Uint64 (milliseconds), which is far less prone to overflow than SDL2’s 32-bit value. Delta time calculation ensures the ball moves at a consistent speed regardless of frame rate. The key addition in SDL3’s API is the