Ethereum-Rock-Paper-Scissors

Rock-paper-scissors game based on blockchain technology. Ethereum based blockchains users can create/join rooms, place bets, invite players and withdraw winnings.

Smart Contract uses Commit-Reveal model. The choice(rock, paper or scissors) is absolutely confidential. Only after both players have made their choice cards will be on the table.

Game flow:

1. User creates new game session or join existing by invite link
2. User commits its participation in the game
3. Smart Contract takes deposit from all participants
4. Users reveal their choice(rock, paper or scissors)
5. Users distribute game session. Smart Contract takes commission and pays winning

Compile contract:

• Run npm install
• Run npm run init-env
• Run npx hardhat compile

Configuring:

Before interacting with Smart Contract due node client, do following:

• Create .env file: npm run init-env
• Insert all configure values

API_URL="URL to alchemy application"
API_KEY="API key of alchemy application"
PRIVATE_KEY="Private key of transaction invoker"
NETWORK="Network name, example: goerli"
CONTRACT_ADDRESS="Blockchain address of smart contract"
COMMISSION_HANDLER_ADDRESS="Blockchain address of commission handler"
DEPOSIT_HANDLER_ADDRESS="Blockchain address of deposit handler"
COMMISSION_PERCENT="Percent of commission from bid value, pass in absolute values, example: 20"
MIN_BID_VALUE="Minumal bid value, pass in wei"
MODE="Interaction mode. If passed dev, local ethereum blockchain node will be used"

Deploy:

Local node:

• Run npm run setup-ethereum-node
• Set MODE=dev
• Set hardhat.config.js to localhost network
• Run npm run local-deploy

External node:

• Fill .env file.
• Set MODE=external
• Set hardhat.config.js to your network
• Run npm run deploy

Interaction:

1. Compile Smart Contract
2. Insert all configuration values in .env file
3. Run npm run local-interact if you want to use local node
4. Run npm run interact if you want to use node from configuration file

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