Smart contracts for gambling on Ethereum

Smart contracts for gambling on Ethereum

Documentation
Code is heavily documented to be viewed on Etherscan

For documentation please refer to functions in /contracts:

Token.transferAndCall()
Game.play()
<individual_game_contract>.handleSuccess()
Where individual_game_contract can be Dice contract for example

Integration
Following functions are externally callable

Dashboard:

Dashboard.lastGameId() -> int
Dashboard.gameIds(gameId: int) -> address
Dashboard.games(game: address) -> (int, address, bool)
Token:

Token.transferAndCall(tokens: int, game: address, context: bytes[])
Example of transferAndCall for scenario:

stake: 100 tokens
game address: 0x123
context -> risk: 1111
Token.transferAndCall(
    100, 
    0x123, 
    [web3.bytes(1111)]
)
How integration can be approached? Note: Following examples are for Web3 jаvascript client

integrate Web3 with client
const Web3 = require('web3')
configure for Rinkeby testnet network
const web3 = new Web3(
    new Web3.providers.HttpProvider(infuraUrl)
)
load private keys from securely stored credentials
const account = web3.eth.accounts.privateKeyToAccount(privateKey)
integrate ABI interfaces from extracted ABIs in abi directory
const abi = JSON.parse(
    fs.readFileSync('abi/Contract.json')
)
instantiate contract
const contract = web3.eth.Contract(abi).at(address)
start integration from Dashboard's methods
-> they are call functions, means they are read-only
-> they returns simple and complex values
await DashboardContract.lastGameId().call({
    from: account
})
implement transferAndCall for Token
-> this method is transaction function, means write-only
-> it requires to be owner of staked tokens
-> it accepts address of
-> additionally Web3 coded bytes are passed in context
await TokenContract.transferAndCall(
    tokens,
    gameAddress,
    context,
    {
        from: account
    }
)
add creation of new Game contract
new web3.eth.Contract(abi, {
    from: account
})