🐍 Calculus Snake

A multiplayer, synchronous Snake game where players solve calculus questions to move. Designed for classroom settings, hosted by a teacher who can monitor the whole game and leaderboard in real time.

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🚀 Features

• 🧠 Players must solve multiple-choice calculus questions to move
• 🐍 Grow by eating food, die by colliding with other snakes
• ❌ Wrong answers stun players for 10 seconds
• ⏱️ Server-side timer tracks the game duration
• 🧑‍🏫 Teacher has a host view with full-grid control, zoom, drag, and leaderboard
• 📊 Leaderboard ranks players by snake length

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🧩 Tech Stack

• Node.js + Express + Socket.IO for real-time multiplayer
• Vanilla JavaScript + HTML5 <canvas> for gameplay
• MathJax for rendering calculus questions
• Server-authoritative game logic

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🛠️ Setup & Running Locally

1. Clone the repo

git clone https://github.com/yourname/calculus-snake.git
cd calculus-snake

Install dependencies

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npm install
Run the server

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node server/server.js
Open the game

Visit http://localhost:3000 in your browser (Players must be on the same network unless deployed)

🌐 Hosting Online (Render or Railway)

Push this repo to GitHub

Deploy on Render.com or Railway.app

Set the start command to:

pgsql Copy Edit node server/server.js

👨‍🏫 How It Works

The teacher clicks “Create Game” and gets a room code

Students join using the code and enter their name

When the host starts the game:

All players are asked a question

Only correct answers allow them to move their snake

Wrong answers = 10s stun

A global timer counts down from 30s+

When time runs out:

Host sees the full leaderboard

Players see their final rank and length

📁 File Structure

pgsql Copy Edit ├── client/ │ ├── index.html │ ├── game.js │ └── style.css ├── server/ │ ├── server.js │ └── questions.json

✏️ Question Format (in questions.json)

json Copy Edit { "id": 1, "question": "What is the derivative of $x^2$?", "choices": ["$x$", "$2x$", "$x^2$", "$2x^2$"], "correctIndex": 1 } Supports LaTeX via MathJax.

✅ To Do / Improvements

Support touch/mouse for mobile play

Add question categories (derivatives, integrals, limits)

Add animations/sound effects

Add a game replay mode for classrooms

📚 Credits

Made with 💛 for classrooms using:

Socket.IO

MathJax

HTML5 Canvas

📄 License MIT — feel free to modify and use this in your own classrooms or educational games!