RAINWEAVER — readable source

This repository contains the readable development source for the JS13K 2026 entry RAINWEAVER.

The submitted game.zip remains unchanged and is the authoritative competition artifact. This source tree is provided so reviewers can inspect the implementation rather than only the packed runtime.

What is included

• src/renderer3d.js — custom WebGL2 renderer, shaders, shadows and bloom
• src/grove.js — procedural forest scenery
• src/course.js — deterministic endless-course generation
• src/motion.js — movement, collision and tether constraint
• src/character.js — procedural unicorn geometry and animation
• src/rainweaver.js — game state and mechanics
• src/score.js — procedural Web Audio music and sound
• src/main.js — browser entry point
• test/ — regression and behavior checks
• tools/build.mjs — bundling, minification and 13KB packaging pipeline

Build

Requires Node.js 20+.

npm install
npm run build

The build produces dist/index.html and dist/game.zip.

Test

npm test

Provenance

This is the closest preserved readable development snapshot from before the later mountain/cliff background revision. It includes small cleanup and debugging changes made after the original upload, so it is not claimed to be byte-identical to the source tree at the exact moment of submission. The existing competition game.zip remains the authoritative submitted build.

AI tools were used as technical assistance during development and debugging, including help with some web-rendering implementation. The source is published so the implementation can be reviewed directly.