SkyRoller is an entry for Dutch Game Jam 2026 (theme: “Don't stop moving”). It's a browser-based 3D endless-runner / survival prototype built with TypeScript and Babylon.js, using a lightweight in-project engine layer for common game infrastructure (scene management, asset pipeline, input, audio and simple entity systems).

Key links

• Game Page: https://sorskoot.itch.io/skyroller
• Jam page: https://itch.io/jam/dutch-game-jam-5-spring-2026

The project demonstrates a minimal game architecture and gameplay loop: the player (a sphere) hops across scrolling tiles on a five-lane highway and must avoid falling off. The engine layer (local packaged dependency) provides foundational systems so the game code can focus on scene logic, entities and gameplay.

Quick highlights

• Language: TypeScript
• Rendering: Babylon.js
• Local engine: lib/sorskoot-babylon-kit-0.1.3.tgz (consumed as a dependency)
• License: MIT (see LICENSE) - note that music and graphics assets are not freely licensed;

• Move lanes: Left / Right arrow keys or A / D
• Jump: Space
• Goal: Stay on the moving highway tiles and survive as long as possible

Prerequisites

• Node.js (recommended: 22 or later)
• npm (or compatible client)

Install dependencies

npm install

Run the dev server (Vite)

npm run dev
# Opens the game at http://localhost:4623 by default

Build for production

npm run build

Asset pipeline

The repository includes an asset pipeline script. To rebuild processed assets from raw-assets/ into public/assets/:

npm run assets
# or watch mode while editing raw assets
npm run assets:watch

• src/ — game source code (scenes, entities, systems, utils)
  • src/scenes/MainScene.ts — main scene bootstrap
  • src/entities/PlayerObject.ts — player entity behaviour
  • src/systems/TileScrollingSystem.ts — tile pool and scrolling logic
• public/ — built assets served to the browser (images, audio, GUI JSON)
• raw-assets/ — original source assets used by the asset pipeline
• lib/ — local packaged engine dependency (sorskoot-babylon-kit .tgz)

• The game uses an engine layer (@sorskoot/babylon-kit) packaged locally; the engine exposes Game, GameScene, GameObject and several managers (asset, input, XR, etc.). See AGENTS.md for a short architecture summary.
• Scenes implement async setup() to prepare assets and UX, update(deltaTime) is used for per-frame logic.
• Systems are registered in a gameSystems singleton and accessed via gameSystems.get('name') where needed.

This repository is primarily a jam entry and is not currently intended for wide external contribution, but patches, bug reports and small improvements are welcome via issues or pull requests. If you plan to modify the engine layer, update the packaged .tgz in lib/ and run npm install to refresh dependencies.

• The engine layer is early-stage and not documented for public consumption.
• Some features (GUI, scoring, speed systems) are implemented as stubs and marked TK in the source.

• Music and graphical assets are third-party and not included under the project MIT license

This code of the game is released under the MIT License. See the LICENSE file for details.