LBN Competitive System Simulation

Project Introduction

LBN Competitive System Simulation is a comprehensive competitive platform simulation system inspired by the "Golf with Your Friends" game competitive system, aiming to provide a multi-role, multi-functional competitive league management solution. This project is developed using C# Windows Forms, implementing complete functional modules including audience browsing, advertiser placement, player management, league operations, and system administration, simulating a real esports league operational ecosystem and providing users with an immersive competitive system experience.

Core Philosophy

• Multi-Role System Design: Five major roles (Audience, Advertiser, Player, League Owner, Admin) each with distinct responsibilities
• Complete Ecosystem Simulation: Covers event browsing, advertisement placement, player registration, league management, and system monitoring
• Data-Driven Management: Uses JSON for system data storage, supporting export and import
• Visual Interactive Design: Rich UI animations and user experience optimization

My Responsibilities

As the main developer of this project, I collaborated with yutao33003 and qqwnua to complete the following work:

System Architecture Design

• Designed multi-role architecture achieving role separation and permission management
• Established ID verification system supporting user registration, login, and role assignment
• Designed League data structure including member management, event information, and advertisement configuration
• Implemented JSON serialization mechanism for persistent data storage

Core Feature Implementation

• Main Page & Login System: Countdown auto-redirect, role identification, customized welcome messages
• Audience Browse Interface: League list view, search filtering, league details display
• Advertiser Dashboard: Advertisement placement management, budget tracking, league selection
• Player Management System: Profile editing, league join/leave, performance queries
• League Owner Backend: Member management, event scheduling, advertiser negotiation, league settings
• Admin Control Panel: System monitoring, user management, data backup and restoration

UI/UX Design

• Designed theme color system (Audience Green, Admin Red, Player/League Blue)
• Implemented button animation effects and scene transitions
• Designed custom controls and visual data presentation

Core Features

1. Multi-Role System

• Audience (Normal):
  • Browse all public league information
  • Search and filter leagues
  • View event schedules and results
• Advertiser:
  • Manage advertisement placement budget
  • Select target leagues for advertisement
  • Track advertisement effectiveness and exposure data
• Player:
  • Personal profile management (nickname, record, league affiliation)
  • Apply to join leagues
  • View personal event records and rankings
• League Owner:
  • Create and manage leagues
  • Review player join applications
  • Set league rules and event schedules
  • Manage league advertisement partnerships
  • Edit league information and logo
• Admin:
  • Global system monitoring
  • User account management
  • Database backup and restoration
  • Review league applications

2. League Management System

• League Information Management:
  • League name, type (Casual/Competitive), description
  • Custom league logo (image upload support)
  • Member list and role assignment
• Event Management:
  • Event schedule creation and editing
  • Event result recording
  • Score and ranking calculation
• Member Management:
  • Member application review
  • Member role adjustment (Regular Member/Vice Owner)
  • Member removal and blacklist management

3. Data Management & Serialization

• JSON Data Storage:
  • Uses Newtonsoft.Json for serialization/deserialization
  • Supports independent storage of user data, league data, event data
• Data Import/Export:
  • Excel format export (using EPPlus)
  • JSON format backup and restoration
• Data Validation:
  • Uniqueness checks (User ID, League ID)
  • Required field validation
  • Data format verification

4. Search & Filter Functions

• League Search:
  • Fuzzy search by name
  • Filter by type (Casual/Competitive)
  • Sort by member count
• Player Search:
  • Search by nickname
  • Filter by league affiliation
  • Sort by record

5. Visualization & Interactive Design

• Animation Effects:
  • Login page countdown animation
  • Button hover/click effects
  • Scene fade-in/fade-out transitions
• Theme Color System:
  • Role-specific color schemes (Audience Green, Admin Red, Player Blue)
  • Unified visual language and component styling
• Custom Controls:
  • Custom button styles
  • Custom list item display
  • Custom dialog design

Technologies Used

Core Frameworks

• Windows Forms: .NET Framework 4.7.2 desktop application framework
• C#: Primary development language
• Visual Studio: Integrated development environment

Data Processing & Serialization

• Newtonsoft.Json (13.0.3): JSON serialization/deserialization
• EPPlus (7.0.5): Excel file reading/writing and export
• System.ComponentModel.DataAnnotations: Data validation

UI Components & Multimedia

• PresentationCore: WPF component integration
• System.Drawing: Graphics processing and rendering
• System.Media.SoundPlayer: Sound playback

Testing Framework

• MSTest (3.1.1): Unit testing framework
• Microsoft.VisualStudio.TestPlatform: Testing platform

Other Dependencies

• System.DirectoryServices: Directory service access
• System.Configuration: Application configuration management

Project Status

Current Version: Completed (Everything is Done)

• Core Functionality Status: All main features implemented and tested
• Known Issues: Code cleanup work in progress

Feature Completion

• ✅ Completed:
  • Five role system (Audience, Advertiser, Player, League Owner, Admin)
  • Complete league management functionality (creation, editing, member management, event management)
  • User authentication and authorization system
  • Data serialization and persistent storage
  • Excel data export functionality
  • Complete UI/UX design and animation effects
  • Unit testing framework establishment
• 🔄 In Progress:
  • Code refactoring and cleanup (Make the codes much more cleaner)
• 📋 Abandoned:
  • Sound effects system (Perhaps adding some SFXs? - Nah I give up)

Development Challenges & Learnings

1. Multi-Role System Architecture Design

Challenge: How to implement five different roles in a single application, each with independent interfaces and permissions?

Solution:

• Designed ID class as the user base data structure including role field
• Created independent Forms for each role (MainForm, AdminMainForm, PlayerMainForm, LeagueMainForm, etc.)
• Used DialogResult mechanism to redirect to corresponding interface based on role after login
• Implemented role checking logic to restrict access to specific functionalities

Learnings:

• Deep understanding of object-oriented design inheritance and polymorphism concepts
• Mastered Windows Forms multi-window management techniques
• Learned Role-Based Access Control (RBAC) implementation methods
• Understood the importance of user experience in multi-role systems

2. JSON Data Persistence & Serialization

Challenge: How to store complex object structures (users, leagues, events) in JSON format while ensuring data integrity?

Solution:

• Used Newtonsoft.Json for serialization/deserialization
• Designed clear data models (User, League, Event classes)
• Implemented custom JsonConverter to handle special data types (e.g., Guid)
• Established data validation mechanism to ensure loaded data validity
• Implemented data backup mechanism to prevent data loss

Learnings:

• Mastered advanced JSON serialization techniques
• Learned data model design best practices
• Understood the importance of data integrity and consistency
• Familiar with file I/O operations and error handling

3. Complex League Management Logic Implementation

Challenge: How to implement complete league lifecycle management including member applications, reviews, event scheduling, advertisement partnerships, and other complex business logic?

Solution:

• Designed League class encapsulating all league-related data and methods
• Implemented state machine pattern to manage league states (Draft, Active, Archived)
• Used collections (List, Dictionary) to manage member and event data
• Established event system to notify member changes and event updates
• Implemented review process (Pending → Approved/Rejected)

Learnings:

• Deep understanding of business logic layer design patterns
• Mastered practical application of state machine pattern
• Learned complex data relationship management techniques
• Enhanced system design and abstract thinking abilities

4. Excel Data Export Functionality

Challenge: How to export system data as structured Excel files for user data analysis?

Solution:

• Integrated EPPlus library for Excel operations
• Designed export templates (headers, field mapping, format settings)
• Implemented data transformation logic mapping object properties to Excel fields
• Used SaveFileDialog to provide file save interface
• Handled performance optimization for large data exports

Learnings:

• Mastered third-party library integration techniques
• Learned Excel file format and operation methods
• Understood data transformation and mapping design patterns
• Enhanced file handling and UI interaction design capabilities

5. Team Collaboration & Version Control

Challenge: How to ensure code quality and smooth feature integration in three-person collaborative development?

Solution:

• Used Git for version control with clear branching strategy
• Conducted regular Code Reviews and integration testing
• Used unit testing framework (MSTest) to ensure functionality correctness
• Established development documentation and comment standards
• Tracked tasks and bugs through GitHub Issues

Learnings:

• Enhanced team collaboration and communication skills
• Mastered Git branch management and conflict resolution techniques
• Learned unit test writing and test-driven development
• Understood software engineering processes and project management
• Cultivated code review and refactoring awareness

Collaborators

• yutao33003
• qqwnua

Application Snapshots