Mini Snake Game

A mini snake game built with C# and ASP.NET Core with real-time multiplayer support using SignalR.

Features

• Real-time snake game with smooth gameplay
• Multiple power-ups (Speed Boost, Score Multiplier, Invincibility, etc.)
• Particle effects and visual feedback
• High Score Leaderboard - Top 5 scores saved to PostgreSQL database
• Input validation and security features to prevent malicious attacks

Prerequisites

• .NET 9.0 SDK
• PostgreSQL database (for high scores feature)

Local Development

dotnet run

The application will be available at http://localhost:8080

Local Database Setup

For local development with the high scores feature, set the DATABASE_URL environment variable:

export DATABASE_URL="postgres://user:password@localhost:5432/snakegame"
dotnet run

Railway Deployment

This application is configured to deploy to Railway using Docker.

Deploy Steps:

1. Push code to GitHub
2. Create a new project in Railway
3. Connect your GitHub repository
4. Railway will automatically detect the Dockerfile and deploy
5. Add PostgreSQL database - See RAILWAY_SETUP.md for detailed instructions

The application listens on the PORT environment variable provided by Railway.

Database & High Scores

The game includes a high score system that saves the top 5 scores to a PostgreSQL database.

Features:

• Automatic prompt when achieving a top 5 score
• Input validation to prevent offensive language and malicious attacks
• SQL injection and XSS protection
• Leaderboard accessible from the main menu

Setup:

See RAILWAY_SETUP.md for complete PostgreSQL setup instructions on Railway.

Security

The application includes multiple security layers:

• Input sanitization and validation
• Parameterized database queries (via Entity Framework Core)
• Offensive language filtering
• SQL injection pattern detection
• XSS attack prevention