DegenzGame

A multiplayer Discord gaming platform built with F# and the Giraffe web framework, featuring interactive games with player progression and an in-game economy.

Degenz World

Architecture

Core Technologies

• F# (.NET 6.0): Primary programming language for all game logic and bot functionality
• Giraffe: F# web framework used for the Currency API microservice
• DSharpPlus: Discord API library for bot interactions and slash commands
• PostgreSQL: Database with Npgsql.FSharp for type-safe operations
• Docker: Containerized deployment

Project Structure

The solution consists of two main projects:

• Bot (Bot.fsproj): Main Discord bot application containing all game implementations
• CurrencyAPI (CurrencyAPI.fsproj): HTTP API microservice for currency balance management

Game System

Available Games

HackerBattle

Cyberpunk-themed combat game where players:

• Use hack items (VIRUS, REMOTE, WORM) to attack other players and steal GBT currency
• Deploy shields (FIREWALL, ENCRYPTION, CYPHER) for defense
• Items have cooldown periods and class-based effectiveness
• Combat resolution based on item power vs resistance stats
• Includes comprehensive validation (can't attack yourself, cooldown checks, etc.)

SlotMachine

Casino-style slot machine featuring:

• Custom symbols: BigBrother, Eye, Obey, AnonMask, Rat, Ramen, Sushi, Pizza
• Configurable reel probabilities per symbol
• Prize table with money rewards and jackpot system
• Integration with GBT currency system

Thief Game

Player-vs-player stealing mechanics:

• 1-minute cooldown for thieves, 1-hour recovery for victims
• Success chance calculation based on player stats
• Payout formula: defenderBank * 0.1 * (1.0 - chance) with random bonus
• Two outcomes: Success (steal GBT) or WentToPrison (imprisoned status)

Rock Paper Scissors

Classic game with Discord UI integration and animated GIF results

Store System

In-game marketplace with:

• Fixed-price item purchasing with GBT currency
• Stock management (limited/unlimited items)
• Role-based access control and invite requirements
• Timed sales with Unix timestamp endpoints
• Stack limits for certain items

Trainer System

Tutorial/onboarding system:

• Grants "Trainee" role to new players
• Multi-step tutorial teaching shield and hack mechanics
• Provides starting items (REMOTE hack, FIREWALL shield)
• Simulated combat against "Sensei" bot

Player Progression

Stats System

Four core attributes with time-based decay:

• Strength: Combat effectiveness
• Focus: Precision and accuracy
• Charisma: Social interactions
• Luck: Random event outcomes

Each stat features:

• Base range 0-100 with item-based modifications
• Decay rate of 2.09 (100 to 0 in ~48 hours)
• Item effects: Min/Max bounds, Add bonuses, RateMultiplier

Discord Integration

Multi-Bot Architecture

The system uses multiple specialized Discord bot clients:

• hackerBattleBot: HackerBattle game interactions
• storeBot: Store transactions and interactions
• inviterBot: Member recruitment and invite tracking
• slotsBot: Slot machine operations
• adminBot: Administrative functions

Event Handling

• Component interactions (buttons, dropdowns)
• Slash command registration per guild
• Message creation events
• Guild member join/update tracking
• Real-time game state management

Database Design

PostgreSQL Integration

Type-safe database operations using Npgsql.FSharp:

• User table: Discord IDs, display names, GBT balances
• Item system: Database-driven item definitions with custom composite types
• Event tracking: Player actions, cooldowns, game history with proper typing
• Custom types: StatMod composite type for database item modifiers

Currency API (Giraffe)

Endpoints (Currency.fs)

• GET /user/{id}/balance: Retrieve player's GBT balance
• PATCH /user/{id}/balance/withdraw: Deduct GBT (with insufficient funds validation)
• PATCH /user/{id}/balance/deposit: Add GBT to player account
• API Key Authentication: X-API-Key header validation
• Error Handling: Comprehensive error responses and logging

Development Setup

Prerequisites

• .NET 6.0 SDK
• PostgreSQL database
• Discord application with multiple bot tokens
• Paket for F# package management

Configuration

Environment variables required:

• DATABASE_URL: PostgreSQL connection string
• API_KEY: Currency API authentication key
• Multiple Discord bot tokens for specialized bots

Running the Application

# Restore packages
dotnet paket restore

# Build the solution
dotnet build

# Run the Discord bot
dotnet run --project Bot

# Run the Currency API
dotnet run --project CurrencyAPI