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Brian Sunter

Platform

A small 2D platformer rendered with isometric 3D models, written in C99 and built on Sokol and a tiny ECS. Same binary runs natively and in the browser via WebAssembly.

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project C Sokol WebAssembly Game Development ECS
Cover image for Platform

Overview

Platform is a small side-scrolling platformer written in C99. The world is 2D, but everything on screen is a real 3D mesh from the Kenney Platformer Kit, lit at asset-conversion time so the renderer does no lighting math at runtime.

Platform gameplay screenshot
Platform gameplay screenshot

The same source builds to a native macOS/Linux binary and to a WebAssembly bundle for the browser, so desktop, mobile web, and a packaged native build all run the same gameplay code.

Features

  • 2D platformer movement with run, jump variable-height jump-cut, and one-way platforms
  • Coins, hearts, jewels, stars, keys, and other pickup types
  • Touch controls for mobile web: left half for movement, right half to jump
  • Deterministic gameplay core split into game_core.c with its own unit test suite and 90%+ coverage gate
  • Static C mesh data generated from Kenney OBJ models at build time, with no runtime model loading

Technology Stack

  • C99 for all gameplay and rendering code
  • Sokol for graphics, app, and input across Metal, OpenGL, and WebGL2
  • c-ecs for entities, components, and systems
  • Emscripten for the WebAssembly build
  • Python tool that bakes Kenney OBJ meshes into static C arrays
  • Nix flake for a reproducible clang + emscripten dev shell