Quillhash Challenge

Lottery.sol

pragma solidity ^0.4.0;

contract Lottery {
    
    
    uint256 winner;
    mapping(address => uint256) users;
    address owner;
    bool contractAccepting;
    
    event value(uint256 value, address reee);
    
    function Lottery(uint256 _winner){
        winner = _winner;
        owner = msg.sender;
        contractAccepting = true;
    }
    
    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }
    
    function closeGame() onlyOwner {
        contractAccepting = false;
    }
    
    function winnerAddress() constant returns(uint256){
        return winner;
    }
    
    function getPrice() {
        if(msg.sender == address(winner) && !contractAccepting){
            msg.sender.send(this.balance / 2);
            owner.send(this.balance / 2);
        }
    }
    
    function makeGuess(uint256 _number){
        if(users[msg.sender] > 0){
            users[msg.sender] = users[msg.sender] - 1;
        }else {
            throw;
        }
        
    }
    
    function() payable{
        if(contractAccepting){
            if(msg.value % 1 ether == 0){
                users[msg.sender] += msg.value / 1 ether;    
            }else {
                msg.sender.send(msg.value % 1 ether);
                users[msg.sender] += msg.value / 1 ether;
            }
            value(this.balance, msg.sender);
            value(msg.value, msg.sender);
            value(users[msg.sender], msg.sender);   
        }else {
            throw;
        }
    }
    
}