Dark Forest

Dark Forest is an massively multiplayer online real-time strategy (MMORTS) space conquest game build on top of the Ethereum blockchain.

Project Structure

The Dark Forest repository is composed of three main components"

1. /client contains the game's user interface
2. /eth contains the game's smart contract code
3. /circuits contains the game's zkSNARKS circuits writen in Circom

Development Guide

Installing Core Dependencies

• Node (v12.18.0)
• Yarn (Javascript Package Manager)
• Ganache CLI

Installing The Correct Node Version Using NVM

Dark Forest is built and tested using Node.js v12.18.0 and might not run properly on other Node.js versions. We recommend using NVM to switch between multiple Node.js version on your machine.

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
nvm install

After the installation is finished, you can run node --version to verify that you are running v12.18.0

Installing Yarn & Other Dev Dependencies

Refer to Yarn's official documentation for the installation guide.

After you have Yarn installed, run the following commands in the root director install the remaining dev depencies:

yarn global add ganache-cli
yarn install

Client Development Setup

All of our client related code are located in the /client directory.

Currently, after following the setup below, you will be able to have a locally running client that will point towards the current playtest contract on Ropsten. The production contract address is stored in /client/src/utils/prod_contract_addr.ts.

Navigate to the /client folder and run the following commands:

yarn install
yarn start:prod

Smart Contract Development Setup

All of our smartcontract related code are located in the /eth directory.

• /eth/contracts contains the smartcontract code written in solidity
• /eth/test contains the test for the smartcontract written in Javascript

Installing Dependenciees

Navigate to the /eth folder and run the following commands:

yarn add scrypt
yarn install

Note: We run yarn add scrypt as a hack too solve a node-gyp error that a lot of our developers have encountered.

Running Tests

yarn test

Deploying Contracts Locally

We use OpenZeppelin CLI to manage the deployment our contracts instead of using Truffle. We use it because it works out of the box with OpenZeppelin upgradeable contract system.

You can easily deploy contract locally by running the local deployment at the project root directory:

Note: You will need ganache-cli for this to run properly.

./local-deploy.sh

For more information regarding Dark Forest's smart contract architecture, see the README.md file inside the /eth directory.

Circuits Development Setup

TODO