🎮 Modern Connect Four Game

A beautiful, modern Connect Four game with AI opponent and engaging features.

✨ Features

🎨 Modern UI Design

• Clean Interface: Professional, modern design
• Color-Coded Elements: Intuitive visual feedback
• Responsive Layout: Three-panel design
• Real-Time Updates: Live game status and scores

🤖 Advanced AI Opponent

• 3 Difficulty Levels: Easy, Medium, Hard
• Smart Strategy: Blocks threats and seeks wins
• Minimax Algorithm: Optimal play on hard difficulty
• Adaptive AI: Adjusts strategy based on difficulty

🎯 Game Features

• Player vs AI: Challenge the computer
• Player vs Player: Local multiplayer
• Undo Move: Take back your last move
• Score Tracking: Win counters and statistics
• Game Modes: Switch between PvP and PvE

🚀 Quick Start

Run the Game

python connect_four.py

Requirements

• Python 3.8+ (uses only standard library)
• tkinter (included with Python)
• No additional dependencies required!

🎮 How to Play

1. Start the Game: Click "🎮 Start Game"
2. Make Moves: Click on any column to drop your piece
3. Win Condition: Get 4 pieces in a row (horizontal, vertical, or diagonal)
4. Controls:
   • 🎮 Start Game - Begin a new game
   • 🔄 Reset - Reset the current game
   • ↶ Undo - Undo your last move
   • Game Mode - Switch between Player vs AI and Player vs Player

🎯 Game Modes

Player vs AI (PvE)

• Play against computer opponent
• 3 difficulty levels:
  • Easy: Random moves with basic strategy
  • Medium: Blocks threats, seeks wins
  • Hard: Minimax algorithm, optimal play

Player vs Player (PvP)

• Two human players take turns
• Perfect for local multiplayer
• Equal playing field

🎨 UI Features

• Purple Header: Modern gradient header design
• Three-Panel Layout: Players, Game Board, Controls
• Color-Coded Buttons:
  • Blue: Start Game
  • Green: Reset
  • Orange: Undo
• Real-Time Status: Current player and game state
• Score Tracking: Win counters for both players

🔧 Technical Details

Architecture

• Game Engine: connect_four_game.py - Core game logic
• GUI Interface: connect_four.py - Modern UI
• Clean Code: Well-structured, maintainable code

Algorithms

• Win Detection: Optimized 4-directional checking
• AI Strategy: Minimax with alpha-beta pruning
• Board Evaluation: Position scoring system
• Move Generation: Efficient valid move detection

Performance

• Time Complexity: O(1) for moves, O(n) for win detection
• Space Complexity: O(rows × cols) for board storage
• AI Depth: Configurable search depth (default: 4)

📁 Project Structure

PlotFour/
├── connect_four.py          # 🎮 Main GUI application
├── connect_four_game.py     # 🧠 Game engine and AI
├── requirements.txt         # 📋 Dependencies (none required!)
├── README.md               # 📖 This documentation
├── .gitignore              # 🚫 Git ignore file
├── plot_four.cpp           # 📜 Original C++ version
└── LICENSE                 # 📄 MIT License

🎉 Features Summary

Modern UI with clean, professional design
AI Opponent with 3 difficulty levels
Game Modes (PvP and PvE)
Undo Functionality
Score Tracking
Real-Time Updates
Color-Coded Interface
Responsive Design
No External Dependencies

🐛 Troubleshooting

Common Issues

Game won't start?

• Ensure Python 3.8+ is installed
• Check that tkinter is available: python -c "import tkinter"
• Verify all files are in the same directory

AI too easy/hard?

• The AI difficulty is set in the game engine
• Easy: Random moves
• Medium: Basic strategy
• Hard: Optimal play

Performance issues?

• The game uses minimal resources (<50MB RAM)
• Close other applications if needed

🤝 Contributing

Contributions welcome! Areas for improvement:

• Enhanced graphics and animations
• Online multiplayer support
• Tournament mode
• Custom board sizes
• Advanced AI algorithms
• Mobile app version

📄 License

MIT License - Feel free to use, modify, and distribute!

🎉 Credits

• Game Design: Classic Connect Four rules
• Modern UI: Clean, professional design
• AI Algorithm: Minimax with alpha-beta pruning
• Python Implementation: Optimized for performance and readability

🤖 Glimpse

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Enjoy playing Modern Connect Four! 🎮✨

Built with ❤️ using Python and modern UI design principles