🎮 Tic Tac Toe - Flutter App

A modern Flutter-based implementation of the classic Tic Tac Toe game with advanced rules and modes:

• 🧑‍🤝‍🧑 Offline Two-Player Mode
• 🧠 Offline AI Mode using Minimax with Alpha-Beta Pruning
• 🌐 Online Multiplayer Mode via Firebase Realtime Database

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📱 Features

✅ Offline Two-Player Mode

• Two players can play on the same device.
• Turn-based gameplay with visual indicators.
• Custom Rule: Each player can only have 3 moves on the board at any time.
• On the 4th move, the oldest move is removed automatically.

🧠 Offline AI Mode

• Play against a smart AI opponent.
• The AI uses Minimax with Alpha-Beta Pruning to evaluate and select optimal moves.
• AI follows the same 3-move limit rule.
• AI avoids placing its move on the cell that's about to be removed on its next turn.

🌐 Online Multiplayer Mode

• Create and join rooms using unique room IDs.
• Real-time gameplay using Firebase Realtime Database.
• Game board remains inactive until both players are connected.
• The room creator can reset the game.

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🧠 AI Logic

• The AI is implemented using the Minimax algorithm with Alpha-Beta Pruning to reduce unnecessary computation.
• Evaluates moves based on maximizing wins and minimizing losses.
• Considers the 3-move limit per player.
• Avoids placing symbols on cells that will be removed in the next turn.
• Designed to be challenging and intelligent.

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🛠️ Technologies Used

• Flutter – UI development
• Dart – Core programming
• BLoC Pattern – State management
• Firebase – Online multiplayer support
• Logger – Debug logging and AI tracing

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📂 Folder Structure

lib/ ├── bloc/ # BLoC logic for game and room management ├── models/ # Data models (Game, Player, Room) ├── provider/ # Online & Offline game providers ├── screens/ # UI screens for all modes ├── utils/ # AI logic, logging utilities └── main.dart # App entry point

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🚀 Getting Started

Step 1: Clone the repository

git clone https://github.com/Simonjohn42004/tic_tac_toe_flutter.git

Step 2: Install dependencies

flutter pub get

Step 3: Run the application

flutter run

✅ Ensure Firebase is properly configured with google-services.json (Android) or GoogleService-Info.plist (iOS) for online features to work.

📃 License This project is licensed under the MIT License.