🍕 Pizza Delivery Simulator

A multithreaded pizza restaurant simulation in C++ using std::thread, std::mutex, and std::condition_variable.

📋 Description

The program simulates a pizza restaurant with multiple roles working in parallel:

• Waiters — receive orders from customers
• Chefs — cook pizzas
• Delivery Drivers — deliver finished pizzas

All processes are synchronized through queues and condition variables.

🎯 Features

• ✅ 7+ parallel threads (2 waiters, 3 chefs, 2 delivery drivers)
• ✅ Synchronization via std::condition_variable
• ✅ Thread-safe queues with std::mutex
• ✅ Atomic order counter (std::atomic)
• ✅ Time measurement with std::chrono
• ✅ Detailed statistics after shutdown
• ✅ Colored terminal output (ANSI codes)

🛠️ Technologies

• C++11/14 (thread, mutex, condition_variable, atomic, chrono)
• ANSI Escape Codes for colored output
• Producer-Consumer Pattern for queues

📊 Statistics

After completion, the program displays:

• Number of received/cooked/delivered orders
• Average cooking and delivery time
• Productivity of each chef
• Popularity of pizza types

🚀 How to Run

Compilation (Visual Studio):

Open the project in Visual Studio and press F5 (Run).

📸 Screenshots

📂 Project Structure

pizza-restaurant/
├── manager.cpp           # Main file
├── Order.h               # Order structure
├── OrderQueue.h/cpp      # Thread-safe queue
├── Waiter.h/cpp          # Waiters
├── Chef.h/cpp            # Chefs
├── Delivery.h/cpp        # Delivery drivers
├── Statistics.h/cpp      # Statistics collection
├── Colors.h              # ANSI codes for colors
├── README.md             # Documentation
└── screenshots/
    └── demo1.png/demo2.png  # Screenshots

🎓 What I Learned / Why This Program Is Useful

• Working with std::thread and thread lifecycle management
• Synchronization using std::mutex and std::condition_variable
• Avoiding race conditions and deadlocks
• Producer-Consumer pattern implementation
• Using std::atomic for thread-safe operations
• Time measurement with std::chrono

📝 License

MIT License — free to use and modify.

👤 Author

Oleksandr Kopii — https://github.com/SamuraiSanch