speed-o-light

Speed-O-Light is a high-speed, web-based reaction game inspired by arcade "speed of light" and "whack-a-button" machines. Unlike traditional arcade games that can be perceived as "rigged," Speed-O-Light utilizes cryptographic commitments and Zero-Knowledge Proofs (ZKP) to provide Verifiable Fairness.

The player must tap "Reward" lights while avoiding "Danger" lights within a capped session time. The integrity of the game is proven post-session and can be recorded on-chain.

Features

• TypeScript - For type safety and improved developer experience
• TanStack Router - File-based routing with full type safety
• TailwindCSS - Utility-first CSS for rapid UI development
• Shared UI package - shadcn/ui primitives live in packages/ui
• Express - Fast, unopinionated web framework
• tRPC - End-to-end type-safe APIs
• Node.js - Runtime environment
• Prisma - TypeScript-first ORM
• PostgreSQL - Database engine

Getting Started

First, install the dependencies:

pnpm install

Database Setup

This project uses PostgreSQL with Prisma.

1. Make sure you have a PostgreSQL database set up.

2. Update your apps/server/.env file with your PostgreSQL connection details.

3. Apply the schema to your database:

pnpm run db:push

Then, run the development server:

pnpm run dev

Open http://localhost:5173 in your browser to see the web application. The API is running at http://localhost:3000.

UI Customization

React web apps in this stack share shadcn/ui primitives through packages/ui.

• Change design tokens and global styles in packages/ui/src/styles/globals.css
• Update shared primitives in packages/ui/src/components/*
• Adjust shadcn aliases or style config in packages/ui/components.json and apps/web/components.json

Add more shared components

Run this from the project root to add more primitives to the shared UI package:

npx shadcn@latest add accordion dialog popover sheet table -c packages/ui

Import shared components like this:

import { Button } from "@speed-o-light/ui/components/button";

Add app-specific blocks

If you want to add app-specific blocks instead of shared primitives, run the shadcn CLI from apps/web.

Project Structure

speed-o-light/
├── apps/
│   ├── web/         # Frontend application (React + TanStack Router)
│   └── server/      # Backend API (Express, TRPC)
├── packages/
│   ├── ui/          # Shared shadcn/ui components and styles
│   ├── api/         # API layer / business logic
│   └── db/          # Database schema & queries

Available Scripts

• pnpm run dev: Start all applications in development mode
• pnpm run build: Build all applications
• pnpm run dev:web: Start only the web application
• pnpm run dev:server: Start only the server
• pnpm run check-types: Check TypeScript types across all apps
• pnpm run db:push: Push schema changes to database
• pnpm run db:generate: Generate database client/types
• pnpm run db:migrate: Run database migrations
• pnpm run db:studio: Open database studio UI