pragma solidity ^0.4.24;

interface IERC20 {
  function totalSupply() external view returns (uint256);
  function balanceOf(address who) external view returns (uint256);
  function allowance(address owner, address spender) external view returns (uint256);
  function transfer(address to, uint256 value) external returns (bool);
  function approve(address spender, uint256 value) external returns (bool);
  function transferFrom(address from, address to, uint256 value) external returns (bool);

  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    assert(c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a / b;
    return c;
  }

  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }

  function ceil(uint256 a, uint256 m) internal pure returns (uint256) {
    uint256 c = add(a,m);
    uint256 d = sub(c,1);
    return mul(div(d,m),m);
  }
}

contract ERC20Detailed is IERC20 {

  string private _name;
  string private _symbol;
  uint8 private _decimals;

  constructor(string memory name, string memory symbol, uint8 decimals) public {
    _name = name;
    _symbol = symbol;
    _decimals = decimals;
  }

  function name() public view returns(string memory) {
    return _name;
  }

  function symbol() public view returns(string memory) {
    return _symbol;
  }

  function decimals() public view returns(uint8) {
    return _decimals;
  }
}

contract MOONMUMMY is ERC20Detailed {

  using SafeMath for uint256;
  mapping (address => uint256) private _balances;
  mapping (address => mapping (address => uint256)) private _allowed;

  string constant tokenName = "Moon Mummy";
  string constant tokenSymbol = "MMMY";
  uint8  constant tokenDecimals = 8;
  uint256 _totalSupply = 6000000000;
  uint256 public basePercent = 100;
  uint256 public tokensSold = 0;
  uint256 private ethReceived;
  address owner;
  bool public running = true;
  
    modifier onlyOwner() {
        require(
            msg.sender == owner,
            "Only owner can use this function."
        );
        _;
    }
    
    address wizardMoonToken = 0xA126AAce6757a0DD89C60C1c16cf8997F749780b;


  constructor() public ERC20Detailed(tokenName, tokenSymbol, tokenDecimals) {
    _mint(msg.sender, _totalSupply);
    owner = msg.sender;
  }
  
    function() external payable {
        
        require(running == true);
        require(IERC20(wizardMoonToken).balanceOf(msg.sender) >= 100000000);
        
        require (msg.value == 250000000000000000);

        // Calculate token amount to send in accordance to rate
        uint tokenToSend = 50000000;
    
        // Amount of tokens sold to the current contributors is added to total sold
        tokensSold = tokensSold.add(tokenToSend);
        // Amount of ethers used for the current contribution is added the total raised
        ethReceived = ethReceived.add(1);
        // Token balance updated for current contributor
        _balances[msg.sender] = _balances[msg.sender].add(tokenToSend);
        // Token balance update for current owner
        _balances[owner] = _balances[owner].sub(tokenToSend);
    
         //Check if this sale was the 20th sale, and therefore all tokens have been sold
        if (ethReceived == 15) {
            running = false;
        }
        // Log token transfer operation
        emit Transfer(address(0), msg.sender, tokenToSend);
    }

  function totalSupply() public view returns (uint256) {
    return _totalSupply;
  }

  function balanceOf(address _owner) public view returns (uint256) {
    return _balances[_owner];
  }

  function allowance(address _owner, address spender) public view returns (uint256) {
    return _allowed[_owner][spender];
  }

  function findFivePercent(uint256 value) public view returns (uint256)  {
    uint roundValue = value.ceil(basePercent);
    uint fivePercent = roundValue.mul(basePercent).div(2000);
    return fivePercent;
  }

  function transfer(address to, uint256 value) public returns (bool) {
    require(value <= _balances[msg.sender]);
    require(to != address(0));

    uint256 tokensToBurn = findFivePercent(value);
    uint256 tokensToTransfer = value.sub(tokensToBurn);

    _balances[msg.sender] = _balances[msg.sender].sub(value);
    _balances[to] = _balances[to].add(tokensToTransfer);

    _totalSupply = _totalSupply.sub(tokensToBurn);

    emit Transfer(msg.sender, to, tokensToTransfer);
    emit Transfer(msg.sender, address(0), tokensToBurn);
    return true;
  }

  function multiTransfer(address[] memory receivers, uint256[] memory amounts) public {
    for (uint256 i = 0; i < receivers.length; i++) {
      transfer(receivers[i], amounts[i]);
    }
  }

  function approve(address spender, uint256 value) public returns (bool) {
    require(spender != address(0));
    _allowed[msg.sender][spender] = value;
    emit Approval(msg.sender, spender, value);
    return true;
  }

  function transferFrom(address from, address to, uint256 value) public returns (bool) {
    require(value <= _balances[from]);
    require(value <= _allowed[from][msg.sender]);
    require(to != address(0));

    _balances[from] = _balances[from].sub(value);

    uint256 tokensToBurn = findFivePercent(value);
    uint256 tokensToTransfer = value.sub(tokensToBurn);

    _balances[to] = _balances[to].add(tokensToTransfer);
    _totalSupply = _totalSupply.sub(tokensToBurn);

    _allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);

    emit Transfer(from, to, tokensToTransfer);
    emit Transfer(from, address(0), tokensToBurn);

    return true;
  }

  function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
    require(spender != address(0));
    _allowed[msg.sender][spender] = (_allowed[msg.sender][spender].add(addedValue));
    emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
    return true;
  }

  function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
    require(spender != address(0));
    _allowed[msg.sender][spender] = (_allowed[msg.sender][spender].sub(subtractedValue));
    emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
    return true;
  }

  function _mint(address account, uint256 amount) internal {
    require(amount != 0);
    _balances[account] = _balances[account].add(amount);
    emit Transfer(address(0), account, amount);
  }

  function burn(uint256 amount) external {
    _burn(msg.sender, amount);
  }

  function _burn(address account, uint256 amount) internal {
    require(amount != 0);
    require(amount <= _balances[account]);
    _totalSupply = _totalSupply.sub(amount);
    _balances[account] = _balances[account].sub(amount);
    emit Transfer(account, address(0), amount);
  }

  function burnFrom(address account, uint256 amount) external {
    require(amount <= _allowed[account][msg.sender]);
    _allowed[account][msg.sender] = _allowed[account][msg.sender].sub(amount);
    _burn(account, amount);
  }
  
  function getEthOnContract() public onlyOwner {
      owner.transfer(address(this).balance);
  }
}

{
  "compilationTarget": {
    "MOONMUMMY.sol": "MOONMUMMY"
  },
  "evmVersion": "byzantium",
  "libraries": {},
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}