@sakuracasino/roulette-contract v0.6.0

SakuraCasino Roulette

Usage

To install this package, just run

npm install @sakuracasino/roulette-contract --save

Then you can request the abi or address

const {abi, networks} = require('@sakuracasino/roulette-contract');

console.log(abi); // returns the ABI for the Roulette contract
console.log(networks[0].contract_address); // returns the contract address in the kovan network

Development

Checklist

• Implement contract pooling
• Implement color betting with blockhash-based random
• Implement tests for liquidity and bets
• Deploy v0.1 in eth testnet
• Implement all bets
• Implement UI for bets
• Implement Chainlink VRF
• Update UI to wait for VRF callback
• Implement bet fee
• Implement correct DAI permit interface
• Implement bet limit
• Allow for non-EIP-2612 tokens
• Improve contact storage management, delete unused data. Use mainly events.
• Revision liquidity and max bet limits security
• Implement Chainlink VRF + bet queue
• Migrate dev environment to Hardhat
• Deploy v1.0b into Matic testnet
• Investigate implementations with ETH 2.0 Bacon chain VDF and Polkadot BABE VRF
• Deploy v1.0stable into Matic or BSC mainnet

Running the project

1. Run make install for installing node dependencies
2. Run make run for running the ganache server
3. Run make test for checking everything is ok

You can run the GUI instead of doing "make run", just make sure that ganache server is on port 8545

4. Run make migrate for deploying the contracts in the local ganache testnet. It will return the env variables for the frontend ui. You've to paste them there if you also want to run the UI.
5. Run make vrfsigner. It starts a mock of a VRFCoodrinator operator oracle. If you don't run this, bet requests will always de pending. Disclamer: remember that you can't run make test while vrfsigneris running.

Additional commands:

`make compile` compiles the contracts
`make migrate` migrates the contracts into the ganache blockchain
`make console` lauch a truffle console in the gananche node
`make test` run tests

Publish a new package version

The npm package associated with this repository just exposes information. It contains:

• Roulette contract abi
• Information about the contract in different networks such as addresses.

If you deploy the contract in a network, you need to update the file networks.js with the associated information, if the network doesn't exist yet, just add a new entry in networks.

To deploy a new package version: 1. Update networks.js as mentioned above. 2. Make sure to update both package.json and package-lock.json versions to the desired version to publish. 3. Run make publish and it will try to publish in npmjs.org and success if you have permission. Disclaimer: the contract you currently have in the repo should match the same which is deployed in the specified contract address of each network

How to Deploy the contract with Remix

1. Run make flatten and it will return a flatten _Roulette.sol contract.
2. Copy _Roulette.sol into your Remix environment and deploy the contract where you want.

How to Deploy the contract (DEPRECATED)

1. Make sure you have defined the network description under networks.js. contract_address can be empty.
2. Make sure you have correct API and MNEMONIC in the .env file
3. Define NETWORK variable as the network name and then call make deploy-live. For example, to deploy to kovan you can NETWORK=kovan make deploy-live.
4. Optionally, there's some predefined commands like make deploy-kovan for common networks.
5. Once deployed, please update the contract address under networks.js
6. You can call make flatten to have a flatten _Roulette.sol contract for verifying it on etherscan.