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tiennm99
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Every surface hardcoded its own grey and red, so the dark palette already defined in globals.css could never take effect and muted text failed contrast. Route colour through tokens instead: --brand and --surface join the shadcn set, the Vietnamese flag red stays the brand, and a prefers-color-scheme block supplies the dark values. The dark: variant now matches both the media query and a .dark ancestor. It previously matched only the class, so dark: utilities compiled to rules that could never apply under OS-driven theming. Contrast, measured against WCAG AA rather than eyeballed: text-gray-400 on the page background was 2.41:1, the blue and purple rank labels 2.34:1 and 2.46:1, white on amber-500 2.15:1. All twelve token pairs now sit between 4.7:1 and 19.8:1 in both themes. Also: emoji and text glyphs used as icons give way to lucide SVGs with accessible names, score and rank stop relying on colour alone, loading and result regions announce via role=status, interactive targets reach 44px, 100vh becomes dvh so mobile browser chrome stops clipping the game, the leaderboard tab count follows the city list, and numeric columns use tabular figures.
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.