This repository provides a starting point for tokenizing aspects of a metaverse or game environment on the Ethereum blockchain (or compatible EVM chains). The template includes a Solidity smart contract designed to streamline the creation and management of in-world tokens—be they fungible utility tokens or NFTs representing unique items, virtual land, avatars, or other valuable digital assets.
-
Modular Smart Contract Design:
A Solidity contract that can be easily extended or integrated into your larger DApp ecosystem. -
Fungible & Non-Fungible Token Support:
The included contract demonstrates how to issue ERC-20 compatible tokens for in-metaverse currencies, and can be extended to handle ERC-721 or ERC-1155 tokens for assets like items, parcels of land, or other unique objects. -
Upgradeable Structure:
The contract is structured to allow modifications and extensions without starting from scratch, making it easier to iterate as your metaverse evolves. -
Gas Efficiency Considerations:
Basic design patterns and techniques are included or suggested to help keep transaction costs manageable.
- Node.js & npm/yarn: Ensure you have Node.js and a package manager such as
npm
oryarn
installed. - Hardhat or Truffle: A development framework for compiling, testing, and deploying the smart contracts. This template assumes you’re using Hardhat but you can adapt it to Truffle or Foundry.
- Ethereum Client or Test Network:
- For development and testing, use a local test network (e.g., Hardhat Network).
- For staging and production, connect to testnets like Goerli or Polygon Mumbai, or mainnets like Ethereum or Polygon.
-
Clone the Repository:
git clone https://github.com/Cryptolyfe/Metaverse_Template.git cd Metaverse_Template
-
Install Dependencies:
npm install
or
yarn install
Metaverse_Template/
├─ contracts/
│ └─ MetaverseTemplate.sol // Example template contract
├─ scripts/
│ └─ deploy.js // Example deployment script
├─ test/
│ └─ MetaverseTemplate.test.js // Basic test suite
├─ hardhat.config.js
└─ package.json
- contracts/: Contains Solidity source files.
MetaverseTemplate.sol
is where your token logic resides. - scripts/: Deployment and interaction scripts. Customize
deploy.js
to fit your requirements. - test/: Unit tests to ensure the contract behaves as expected. Use
npm run test
oryarn test
after configuration.
To compile the contracts, run:
npx hardhat compile
Run the included tests to verify the contract’s functionality:
npx hardhat test
You can write additional tests in test/
to cover new features or modifications.
Update scripts/deploy.js
with the desired constructor parameters and run:
npx hardhat run scripts/deploy.js --network <network_name>
Replace <network_name>
with a local or remote network specified in hardhat.config.js
.
Example (local Hardhat network):
npx hardhat run scripts/deploy.js --network localhost
-
Fungible Token Logic (ERC-20):
Adjust initial supply, token name, and symbol as needed. Add custom business logic such as transaction fees, staking, or governance hooks. -
Non-Fungible or Semi-Fungible Tokens (ERC-721/1155):
Extend the contract to manage unique assets or collections. This might include minting functions for avatars, land parcels, or special in-game items. -
Access Control & Permissions:
Integrate role-based access control (e.g., usingOwnable
orAccessControl
) to restrict certain actions (like minting or burning) to specific addresses or contracts. -
Integration with Other Contracts:
Connect this template with game logic contracts, marketplace contracts, or reward distribution mechanisms to build a complete metaverse ecosystem.
-
Add More Templates:
Include additional reference contracts for ERC-721 and ERC-1155 tokens. -
Advanced Features:
- Implement upgradeable proxies (e.g., OpenZeppelin Upgradeable Contracts) for seamless feature rollouts.
- Add oracles and price feeds for dynamic pricing and scarcity mechanics.
-
Scaling Solutions:
Integrate layer-2 solutions for faster, cheaper transactions suitable for frequent in-metaverse interactions.
We appreciate bug reports, feature requests, and code contributions that help improve the template.
This project is available under the MIT License.
This template aims to give you a head start in structuring and deploying your own metaverse token ecosystem. Adapt, modify, and extend it to suit the unique needs of your game or virtual world. Enjoy building!