EthGambler Source

contract Lotto {
    uint constant ticketPrice = 100 finney;
    uint constant waitTime = 6;
    uint constant bettingTime = 40;
    uint constant randSubmitTime =30;
    uint constant payoutTime = 30;
    uint constant totalTime = waitTime + bettingTime+ randSubmitTime + payoutTime;
    uint public lastBlock;
    uint public balance;
    uint public submitted;
    address[] accounts;
    address[] public tickets;
    uint256 XOR;
    mapping(address => uint256) secretHash;
    mapping(address => uint) balances;
    function Lotto(){ //Runs only at creation
        lastBlock = block.number;
    }

    function tStep() constant public returns (uint) {
        return block.number%totalTime;
    }
    function sha(uint256 a) public returns(uint256){  //DO NOT USE VIA BLOCKCHAIN!
        return uint256(sha3(a));
    }



    function payoutReady() public constant returns (bool){

        return (block.number % totalTime > totalTime- payoutTime && block.number - lastBlock > 68 ) ;

    }

    function buyTicket(uint256 secrethash) public {
        if (block.number % totalTime < bettingTime && msg.value > ticketPrice){
            secretHash[msg.sender] = secrethash;
            balances[msg.sender] += msg.value;
            balance += msg.value;
            if(balances[msg.sender] == 0){
            accounts.length = accounts.length + 1;
            accounts[accounts.length-1] = msg.sender;
            }
        }
    }

    function submitSecret(uint256 secret) public {
        if(balances[msg.sender] != 0 && block.number% totalTime < totalTime - payoutTime && block.number% totalTime > bettingTime + waitTime){
            if (uint256(sha3(secret)) == secretHash[msg.sender]){
                XOR = XOR ^ secret ^ uint(msg.sender);
                submitted++;
            for(uint32 i=0; i < balances[msg.sender] / ticketPrice; i++ ){
                tickets.length = tickets.length +1;
                tickets[tickets.length -1 ] = msg.sender; //append one copy of sender address

            }
            balances[msg.sender]=0;
        }
        }

    }

    function payout() public returns (address) {
        if (payoutReady()) {
            if(submitted==accounts.length){
                address winner = tickets[XOR%tickets.length];
            winner.send(balance - 25000*tx.gasprice);
            }
            else{
                for(uint j =0; i<tickets.length; i++){
                    tickets[i].send(balance/tickets.length);
                }
            }
            lastBlock = block.number;
            delete balance;
            for (uint i=0; i< accounts.length; i++){
                delete secretHash[accounts[i]];
                delete balances[accounts[i]];
            }
            delete tickets;

            return winner;
        }
    }
}