Rock Paper Scissors

Rock Paper Scissors DApp game.
Smart contracts are written in Solidity.
Smart contracts are compiled and deployed to a private Ganache blockchain using Truffle framework (solc, web3).
Mocha framework is used for testing contracts.
App frontend is implemented using the Drizzle library included in Truffle.
App relies on React/Redux Store, synchronized with smart contract via web3 provider.

Game process

The game is designed for two participants.
Each participant opens the game in their own browser.
Players agree on who is Player A and who is B, and begin to take turns playing.
The first player's bet is stored in the blockchain, and after the second player makes a bet, game result is displayed.
This game implementation can be improved by encrypting the first player's bet.

Setting Up prerequisites

Installing Node.js on AWS EC2 instance

https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/setting-up-node-on-ec2-instance.html

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
. ~/.nvm/nvm.sh
nvm install lts/dubnium

Installing Truffle framework and Ganache private blockchain

npm install -g yarn
yarn global add truffle
yarn global add ganache-cli

Linux virtual screen 1

Starting blockchain

ganache-cli --host 0.0.0.0

Linux virtual screen 2

Smart contract compilation and deployment

truffle compile
truffle test
truffle migrate

Starting app frontend

cd app
yarn
yarn start