pragma solidity ^0.4.16;

interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }

contract Coinvilla {
    string public name = "Coinvilla";
    string public symbol = "CVA";
    uint8 public decimals = 18;
    uint256 public totalSupply;
    uint256 public CoinvillaSupply = 3000000000;
    uint256 public buyPrice = 3086;
    address public creator;
    mapping (address => uint256) public balanceOf;
    mapping (address => mapping (address => uint256)) public allowance;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event FundTransfer(address backer, uint amount, bool isContribution);
    
    
    function Coinvilla() public {
        totalSupply = CoinvillaSupply * 10 ** uint256(decimals); 
        balanceOf[msg.sender] = totalSupply;   
        creator = msg.sender;
    }
    function _transfer(address _from, address _to, uint _value) internal {
        require(_to != 0x0);
        require(balanceOf[_from] >= _value);
        require(balanceOf[_to] + _value >= balanceOf[_to]);
        balanceOf[_from] -= _value;
        balanceOf[_to] += _value;
        Transfer(_from, _to, _value);
      
    }
    function transfer(address _to, uint256 _value) public {
        _transfer(msg.sender, _to, _value);
    }

    
    
    function () payable internal {
        uint amount = msg.value * buyPrice;                    
        uint amountRaised;                                     
        amountRaised += msg.value;                           
        require(balanceOf[creator] >= amount);              
        balanceOf[msg.sender] += amount;                 
        balanceOf[creator] -= amount;                       
        Transfer(creator, msg.sender, amount);              
        creator.transfer(amountRaised);
    }

 }