fun-fair

Consensys-bootcamp-final-project

Author: Sachin Mittal

Aim

Create a gaming SDK, where gamers can clash with each other, and eventually put some skin in the game to make it more competitive.

Motivation

• According to the stats of DApp reviewing websites, and consensys blogs. The blockchain mainstream adoption and increase in DAU (Daily active users) can be enhanced by Games, and casinos.

What does your project do?

I have started on this path with a basic tic-tac-toe game.

Use case of the project

• Sachin opens a game, bets 0.01 ether and appears in a list of users who are up to play.
  
• Sanchay sees Sachin on the list and accepts the game by betting 0.01 ether too.
  
• Sachin confirms and the game starts.
  
• Sachin and Sanchay make their moves, one after each other.
  
• If one of them wins, that player can withdraw 0.02 ether from the contract.
  
• If the game ends in a draw, both users can withdraw their respective money i.e. 0.1 ether.
  

How to set it up ?

Getting started

This project makes use of runner-cli as the task runner:

npm i -g runner-cli

The tasks are declared in blockchain/taskfile and web/taskfile, which are shell scripts on steroids.

To see the available commands, simply invoke:

run

To invoke a command:

run build

Or:

./taskfile build

Blockchain

• Install the dependencies: run init
• Run the test suite (for TDD): run test
• Compile the contracts: run build
• Deploy the contract to the blockchain: run deploy

Web

• Develop with live reload: run dev
  • Start a local blockchain (Ganache)
  • Deploy the contracts to the local blockchain
  • Open Chromium with MetaMask pointing to ganache
  • Bundle the web and serve it with live reload
• Develop with live reload: run dev ropsten
  • Start a dev server with live reload
  • The ropsten test network will be used
• Build for release: run build
  • Bundle the static web assets to ./build
• Run the E2E test: run test
  • Start a local blockchain
  • Deploy the contracts to the local blockchain
  • Bundle the web
  • Start a local server
  • Open Chromium (puppeteer)
  • Run the tests locally

Dependencies

To work with this project you need:

[sudo] npm i -g truffle parcel-bundler solc ganache-cli

• ParcelJS (HTML/JS/CSS bundler)

• Truffle (Solidity development tools)

• Solc (Solidity compiler)

• Ganache (local blockchain)

• Note: Change the mneumonic given in .secret file, and replace it with mneumonic given in your ganache-cli.

Typical workflow

[sudo] npm i -g runner-cli

Deployment

Blockchain:

cd blockchain
run deploy  # implies "run build"

Frontend:

cd web
run build
ls ./build  # your dist files are here

Evaluation checklist

• README.md
• Screen recording [!!]
• Truffle project - compile, migrate, test
• Smart Contract Commented
• Library use
• Local development interface
  • Displays the current ETH Account
  • Can sign transactions using MetaMask
  • App interface reflects contract state
• 5 tests in Js or Sol
  • Structured tests
  • All pass
• Circuit breaker/Emergency stop
• Project includes a file called design_pattern_desicions.md / at least 2 implemented
• avoiding_common_attacks.md and explains at least 3 attacks and how it mitigates
• deployed_addresses.txt that indicates contract address on testnet
• upgradeable design pattern
• One contract written in Vyper or LLL
• IPFS
• uPort
• ENS
• Oracle

Future Prospects

1. Writing test for contract in JS
2. Using battle-tested contracts for enhancing security
3. Making code, and development workflow developer friendly.
4. Run the project, using docker.