--- title: "Platform" description: "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…" url: "https://briansunter.com/projects/platform" --- May 13, 2026 Launched # 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. [Visit Project ](https://briansunter.github.io/platform/)[View Source](https://github.com/briansunter/platform) C Sokol WebAssembly Game Development ECS  ## 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 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](https://github.com/floooh/sokol) for graphics, app, and input across Metal, OpenGL, and WebGL2 - [c-ecs](https://github.com/briansunter/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 ## Related projects - [TRAD Strike](/projects/trad) [A small Raiden Trad-inspired vertical shooter written in C99, built on Sokol and a tiny ECS. The same binary runs natively and in the browser via WebAssembly.](/projects/trad) - [c-ecs](/projects/c-ecs) [An in-development single-header C99 entity-component-system library with caller-owned storage and compile-time capacities for small games and embedded targets.](/projects/c-ecs) - [Bevy Agent](/projects/bevy-agent) [An in-development Bevy 0.18 workspace for deterministic game simulation control, snapshots, replay, and JSON-RPC, HTTP, and WebSocket agents.](/projects/bevy-agent) ## Share this project