This is a two-player Connect 4 game built in C++ that runs in the command line. Developed for CSCI 135: Software Analysis & Design I at Hunter College, this project was an opportunity to practice object-oriented programming, dynamic data structures, and algorithmic logic.

The game simulates a standard Connect 4 match between two players (Red 🔴 and Blue 🔷). Each player takes turns dropping a "ball" into a column (called a bin). The first player to connect four of their own pieces horizontally, vertically, or diagonally wins the game. If the board fills up before anyone wins, the game ends in a tie.

Key features:

• Dynamic Grid: The board size is customizable via constructor parameters (default is 6 bins × 4 capacity).
• Interactive Gameplay: Players input their desired column during each turn.
• Win Detection: The game checks for win conditions (horizontal, vertical, diagonal) after every move.
• Visual Board: Uses ASCII/Unicode symbols and color codes to make the board easy to read.
• Highlighting the Win: When a player wins, their winning sequence is marked with a different shape/color for clarity.

Welcome Screen:

First Move

Win in Diagonal

Tie

1. Compile the program:

   g++ main.cpp Board.cpp -o connect4

2. Run the executable:

   ./connect4

3. Follow the on-screen prompts:

• Enter the column number (bin index) where you want to drop your ball.

• Watch the game board update after each move.

• The game continues until there is a winner or the board is full.

• Board.hpp: The header file declaring the Board class and its methods.
• Board.cpp: The main implementation of the Board class, including game logic.
• main.cpp: The main driver file that initializes and starts the game.
• README.md: This file.

• Object-Oriented Design: Built around a Board class that manages the game state.
• Dynamic Memory & Vectors: The board is a 2D vector that grows dynamically as pieces are added.
• Input Validation: Ensures players can’t enter out-of-bounds or full columns.
• Modular Design: Each win condition (horizontal, vertical, diagonal) is implemented in its own method for clarity and reuse.
• Terminal UI: Uses Unicode and ANSI escape codes for colored and stylized output.

This project helped solidify my understanding of game loops, object-oriented programming, and terminal I/O in C++. Hope you enjoy playing it as much as I enjoyed building it!

This project is licensed under the MIT License. See the LICENSE file for more details.