Dark Factory

Dark Factory combines the exploration of Dark Forest with the automation and resource management systems of Factorio. It empowers players to design and optimize island layouts, fostering creativity and strategic thinking while leveraging blockchain and zero-knowledge proofs (ZKP) for a decentralized and secure experience.

🚀 Features

• Strategic Challenge: Design and manage resource-generating "islands" for maximum efficiency and rewards.
• Privacy by ZKP in Blockchain: Utilizes ZKP for transparent, privacy-preserving gameplay.
• Rewarding Creativity: Encourages thoughtful layouts and strategic planning.
• Optimized Performance: Supports in-browser proof generation, even on mobile devices.

🌟 Why It's Challenging

Building Dark Factory involved addressing multiple complex challenges:

• Circuit Design:

  • Proving production rates and capacity while incorporating game rules such as ensuring factories are built adjacent to roads and connected to ports.
  • Transforming variable-length road search problems into fixed-length verifiable constraints.
  • Designing efficient hint data for validation within circuits.

• Performance Optimization:

  • We reduced circuit constraints to under 100k, enabling proof generation in seconds, even on mobile browsers, ensuring accessibility for a wide audience.

• Game Logic in ZKP:

  • Extensive work was done on paper to find optimal methods for expressing constraints, balancing efficiency and user experience.

🛠️ How It's Made

Technology Stack

• Circom: ZKP circuit development.
• Circomlib: Foundational libraries for circuits.
• SnarkJS: In-browser proof generation.
• Vue.js/Quasar: Front-end development.
• Foundry: Smart contract development tools.
• Solidity: Smart contract programming language.
• Typechain: Contract interface generation.
• Ethers.js: Blockchain interaction library.

Development Workflow

1. Circuit Design and Integration:

   • Circom circuits encode game rules and generate a Solidity verifier.
   • The verifier integrates with the main Game.sol smart contract deployed on an EVM-compatible chain for rapid testing.

2. Front-End and Proofs:

   • WASM files from Circom enable in-browser proof generation via SnarkJS.
   • A canvas-based UI, powered by Vue.js/Quasar, lets players design layouts intuitively.

3. Blockchain Interaction:

   • Typechain automates the connection between smart contracts and the front-end.
   • Ethers.js handles seamless blockchain interactions.

Deployment Details

• Scroll Sepolia: 0x03F80FeA1795627334C2c2ae7D623257398d0549
• Polygon zkEVM Cardona: 0x03F80FeA1795627334C2c2ae7D623257398d0549
• Linea Sepolia: 0x03F80FeA1795627334C2c2ae7D623257398d0549
• World: 0x03F80FeA1795627334C2c2ae7D623257398d0549
• Blockscout Scroll Sepolia: 0x03F80FeA1795627334C2c2ae7D623257398d0549

🎮 Gameplay Highlights

• Design Islands: Players create layouts with factories and roads to maximize production.
• Strategic Challenges: Only factories connected to ports via roads are valid, adding depth to gameplay.
• Optimized for All Devices: The game runs efficiently on both desktop and mobile browsers.

💡 Future Improvements

• Enhanced layout visualization tools.
• Additional game mechanics for deeper strategy.
• Expanding blockchain integration to include NFTs or player-owned assets.

📄 License

This project is licensed under the MIT License.

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Start strategizing and building your islands in Dark Factory! 🌌🏭