SDL_gfx (or SDL2_gfx for modern SDL2 applications) is an extension library that provides basic 2D geometric shape rendering. However, SDL_gfx does not have a built-in physics engine. To create physics behaviors like gravity, velocity, or collisions, you must write your own math code or integrate a separate engine like Box2D, using SDL_gfx strictly for rendering the visual components. 🎨 Part 1: Drawing Shapes Using SDL2_gfx
Standard SDL2 only supports drawing points, lines, and rectangles. SDL2_gfx expands this dramatically by allowing you to draw circles, ellipses, polygons, and anti-aliased (smooth) shapes. Header Requirements Include the primitive header in your code: #include Use code with caution. Core Drawing Functions
Most functions require an active SDL_Renderer*, spatial coordinates, and color parameters. You can pass color as separate RGBA values (…RGBA()) or as a unified 32-bit hex code (…Color()):
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