ethTicTacToe

Simple TicTacToe game with betting on the Ethereum Blockchain

Get environment ready

We are using the geth client and both websocket and rpc to be able to use remix and receive events.

1. open geth
   $ geth --datadir ~/privateEthTestnet --fast --wsapi eth,web3,personal,net,miner,admin --ws --wsaddr "localhost" --wsport "8546" --wsorigins "*" --rpc --rpccorsdomain="*" --rpcapi eth,web3,personal,net,miner,admin

2. attach new instance (new terminal, use 8546 not 8545!):
   $ geth attach ws://localhost:8546

3. set account that will receive ether
   > miner.setEtherbase(eth.accounts[0])

4. start mining
   > miner.start(2)

5. unlock your account:
   > personal.unlockAccount(eth.accounts[0], "123456", 999999);

6. Open index.html and you're good to go! The game was developed and tested on Google Chrome only.

Deploy the contract

1. do 1.-5. from above

2. go to https://remix.ethereum.org/ and chose web3 provider with standard port 8545

3. after connection click create

4. contract should appear in your geth console

Connect Remix with local folder

1. install remixd
   $ npm install -g remixd
$ e.g. remixd -s ~/Documents/gitkrakenRepo/ethTicTacToe and click the link button in remix.

2. click on the connect button in remix

Things that could be improved in future

• use save math to increase security
• Make it possible that one address can host multiple games
• Variable pot amount
• bet on games from others

Useful commands

web3.fromWei(eth.getBalance(eth.accounts[1]), "ether")