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The donation QR is now zlp.jpg, a 768x1024 portrait rather than the old square, so the intrinsic dimensions and the container width move with it to keep the aspect ratio right and the dialog inside the viewport. Coffee becomes beer across the donate surfaces. The emoji replaces the lucide icon and is hidden from assistive tech, which reads the button text instead.
VNGeoGuessr
A GeoGuessr clone focused on Vietnamese locations with accurate boundary detection and anti-cheat security. Play geolocation guessing games across 5 Vietnamese locations using real street-level imagery.
🎮 Features
- 5 Vietnamese Locations: Ha Noi, Da Nang, Ho Chi Minh, Da Lat, Duc Hoa (Long An)
- 360° Street View: Mapillary panoramic images with PhotoSphere viewer
- Anti-Cheat Security: Server-side session management prevents cheating
- Distance-Based Scoring: 0-5 point system based on accuracy
- Persistent Leaderboards: Redis-powered top 200 player rankings
- Accurate Boundaries: Nominatim API + Turf.js for precise city detection
📚 Documentation
For detailed information about this project, see the documentation in /docs/:
- Project Overview - Project summary and key characteristics
- Features - Complete feature list and game mechanics
- Tech Stack - Technology stack and dependencies
- Development Guidelines - Development setup and coding standards
- Game Flow - Complete gameplay flow documentation
- Project Structure - Codebase organization and architecture
🚀 Getting Started
Prerequisites
- Node.js 18+
- npm 11+
- Redis server (for leaderboards)
Development
# Install dependencies
npm install
# Start development server
npm run dev
# Build for production
npm run build
# Start production server
npm start
# Run linting
npm run lint
Open http://localhost:3000 to play the game.
🏗️ Built With
- Frontend: Next.js 15 + React 19 + Tailwind CSS 4
- Street View: Mapillary API + PhotoSphere Viewer
- Maps: Leaflet + OpenStreetMap
- Geographic Data: Nominatim API + Turf.js
- Storage: Redis (leaderboards) + In-memory sessions
- UI Components: shadcn/ui
🎯 How to Play
- Enter your username
- Select a Vietnamese location
- View the 360° street panorama
- Place your guess on the map
- Earn points based on accuracy (closer = more points)
- Compete for the top 200 leaderboard spots!
📋 Development Notes
- JavaScript Only: No TypeScript files
- Individual Parameters: Functions use separate parameters, not object destructuring
- Server-Side Security: Game coordinates never sent to client
- Session Management: Automatic cleanup after 30 minutes
🤝 Contributing
This project follows specific development guidelines. Please read the Development Guidelines before contributing.