🎮 Tetris in C++ — Terminal & OpenGL Versions

A fun and educational implementation of Tetris in C++, featuring three versions:

• 🖥️ Terminal Version: Classic text-based gameplay in the terminal.
• 🟦 OpenGL Version: Graphical version using OpenGL and GLFW for a modern twist.
• 🤖 Genetic Algorithm AI: Implementation of Genetic Algorithm in Tetris for playing the game and understanding how AI evolves

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🧰 Technologies

Terminal Version	OpenGL Version
C++	C++
Standard Library	OpenGL
I/O & Logic	GLFW for input & context
Grid + Loop Logic	Real-time rendering

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🎯 Features

• Falling tetromino blocks
• Real-time movement with arrow keys
• Line clearing and scoring
• Collision and boundary detection
• Rotation (in OpenGL version)
• Game over detection

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🕹 Controls

Key	Action
← / →	Move left / right
↓	Move down faster
↑	Rotate block
Q / Ctrl+C	Quit (terminal ver)

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🛠️ Building and Running

🔹 Terminal Version

cd tetris-terminal
g++ main.cpp -o tetris_terminal
./tetris_terminal

🔹 OpenGL Version

cd tetris-opengl
g++ main.cpp -lglfw -lGL -o tetris_opengl
./tetris_opengl

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🔹 What I Learned

• Writing a game loop from scratch
• Handling real-time keyboard input
• Implementing grid-based logic
• Tetromino rotation and collision detection
• Using OpenGL for rendering
• Drawing shapes and colors
• Fixing segmentation faults using GDB

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🔹 Future Improvements

• Add a scoring UI overlay (OpenGL version)
• Implement a pause feature
• Include hold/next block preview
• Add sound effects
• Support for different game modes (e.g., timed, endless)
• Port the game to SDL or WebAssembly