go.sol

pragma solidity ^0.5.1;
contract Ownable {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        _owner = msg.sender;
        emit OwnershipTransferred(address(0), _owner);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(isOwner(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Returns true if the caller is the current owner.
     */
    function isOwner() public view returns (bool) {
        return msg.sender == _owner;
    }


    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, "SafeMath: division by zero");
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0, "SafeMath: modulo by zero");
        return a % b;
    }
}
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a `Transfer` event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);
    function mint(address account, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through `transferFrom`. This is
     * zero by default.
     *
     * This value changes when `approve` or `transferFrom` are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * > Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an `Approval` event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a `Transfer` event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to `approve`. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract ApproveAndCallFallBack {
    function receiveApproval(address from, uint256 _amount, address _token, uint8 a) public;
}
contract ERC20 is IERC20,Ownable {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    /**
     * @dev See `IERC20.totalSupply`.
     */
    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See `IERC20.balanceOf`.
     */
    function balanceOf(address account) public view returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See `IERC20.transfer`.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    /**
     * @dev See `IERC20.allowance`.
     */
    function allowance(address owner, address spender) public view returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See `IERC20.approve`.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 value) public returns (bool) {
        _approve(msg.sender, spender, value);
        return true;
    }

    function approveAndCall(address _spender, uint256 _amount, uint8 _extraData
    ) public returns (bool success) {
        if (!approve(_spender, _amount)) revert();

        ApproveAndCallFallBack(_spender).receiveApproval(
            msg.sender,
            _amount,
            address(this),
            _extraData
        );

        return true;
    }

    /**
     * @dev See `IERC20.transferFrom`.
     *
     * Emits an `Approval` event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of `ERC20`;
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `value`.
     * - the caller must have allowance for `sender`'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount));
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to `approve` that can be used as a mitigation for
     * problems described in `IERC20.approve`.
     *
     * Emits an `Approval` event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to `approve` that can be used as a mitigation for
     * problems described in `IERC20.approve`.
     *
     * Emits an `Approval` event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to `transfer`, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a `Transfer` event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _balances[sender] = _balances[sender].sub(amount);
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a `Transfer` event with `from` set to the zero address.
     *
     * Requirements
     *
     * - `to` cannot be the zero address.
     */
    function mint(address account, uint256 amount) public onlyOwner returns (bool){
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
        return true;
    }

     /**
     * @dev Destoys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a `Transfer` event with `to` set to the zero address.
     *
     * Requirements
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 value) internal {
        require(account != address(0), "ERC20: burn from the zero address");

        _totalSupply = _totalSupply.sub(value);
        _balances[account] = _balances[account].sub(value);
        emit Transfer(account, address(0), value);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an `Approval` event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = value;
        emit Approval(owner, spender, value);
    }

    /**
     * @dev Destoys `amount` tokens from `account`.`amount` is then deducted
     * from the caller's allowance.
     *
     * See `_burn` and `_approve`.
     */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(account, msg.sender, _allowances[account][msg.sender].sub(amount));
    }
}
contract ERC20Detailed is IERC20 {
    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
     * these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name, string memory symbol, uint8 decimals) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei.
     *
     * > Note that this information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * `IERC20.balanceOf` and `IERC20.transfer`.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }
}
contract SimpleToken is ERC20, ERC20Detailed {

    /**
     * @dev Constructor that gives msg.sender all of existing tokens.
     */
    constructor (string memory name, string memory symbol) public ERC20Detailed(name, symbol, 18) {
        // mint(msg.sender, 10000 * (10 ** uint256(decimals())));
    }
}

contract Go is Ownable {
    
    using SafeMath for *;

    uint256 public starttime;
    uint256 public yearGameend;
    uint256 public endtime;
    
    uint8 public gameStatus=1;
    uint8 public winTeam = 1;
    uint8 private isVitalik = 1;
    
    //每个队一共有多少代币.
    uint256 public teamA; 
    uint256 public teamB;
    uint256 public teamC;

    uint256 public totalToken; //合约一共有多少ETH
    uint256 public DEVSendETH; //开发者送多少ETH
    uint256 public DEVTeamETH; //开发者拿到的ETH
    uint256 public FOMOETH; //最后一个改变游戏结果的人的ETH
    uint256 public toStatus2ETH;//当TeamA 大于 这个值的时候，游戏进入到第二阶段
    uint256 public toVitalikETH;//激活彩蛋需要的ETH,为toStatus2ETH的10倍
    address public FOMOAddress; //fomo玩家地址
    address public evilAddress; //使游戏进入到第二阶段的玩家地址
    address public vitalikAddress; //彩蛋玩家地址
    
    SimpleToken public tokenAAddress;
    SimpleToken public tokenBAddress;
    SimpleToken public tokenCAddress;
    uint256 public totalETH; //用户分红的ETH的总数 为totalToken + DEVSendETH 
    
    uint256 private rndInit = 24 hours; 
    
    event T(address, uint256 , address , bytes);
    event T1(uint8);

    //每个用户可以分多少钱为 
    // 他有的token数/ teamA * totalETH （对应team)

    constructor() public payable{
        DEVSendETH = msg.value;
        toStatus2ETH = DEVSendETH.mul(20);
        toVitalikETH = toStatus2ETH.mul(10);

    }

    function yearsGameEnd() public view returns(bool){
        if (now > yearGameend){
            return true;
        }
        return false;
    }
    function gameEnd() public view returns(bool){
        if (now > endtime){
            return true;
        }
        return false;
    }
    modifier checkGameTime(){
        require(!yearsGameEnd(),"1 years ago,game over");
        require(!gameEnd(),"game over");
        _;
    }

    modifier onlyStatusnot1(){ //不能是第一阶段.
        require(gameStatus>1,"当前游戏在第一阶段.");
        _;

    }
    modifier onlyVitalik(){ //不能是第一阶段.
        require(gameStatus == 3,"请确保当前游戏在第三阶段.");
        require(vitalikAddress != address(0),"彩蛋未激活.");
        _;

    }
    
    modifier isWithinLimits(uint256 _eth) {
        require(_eth >= 1000000000, "pocket lint: not a valid currency");
        _;
    }
    modifier isHuman() { 
        require(msg.sender == tx.origin, "Humans only");
        _;
    }
   
    function start() public onlyOwner{
        starttime = now;
        yearGameend = starttime +365*24*60*60;
        endtime = starttime + rndInit;
        tokenAAddress = new SimpleToken("TokenA","TokenA");
        tokenBAddress = new SimpleToken("TokenB","TokenB");
        tokenCAddress = new SimpleToken("TokenC","TokenC");
    }
    
    function _mint(SimpleToken tokenContract,uint256 value) private {
        tokenContract.mint(msg.sender,value);
    }
    
    function calvalue(uint256 v) private returns(uint256){

        uint256 xx = v.mul(95).div(100);
        totalToken = totalToken.add(xx);
        if (gameStatus == 3){//在第三阶段.才会把钱丢到FOMO奖池
            FOMOETH = FOMOETH.add(v.mul(3).div(100)); //3%给FOMO奖池
            DEVTeamETH = DEVTeamETH.add(v.mul(2).div(100)); //2%给开发者
        }else{
            DEVTeamETH = DEVTeamETH.add(v.mul(5).div(100));//5%给开发者
        }
        return xx;
    }
    
    function joinA()external payable isWithinLimits(msg.value) isHuman checkGameTime{
        uint256 xx = calvalue(msg.value);
        teamA = teamA.add(xx);
        if(teamA > toStatus2ETH){
            gameStatus = 2;
            rndInit = 12 hours;
            endtime = now.add(rndInit);//修改结束为12小时候后
            evilAddress = msg.sender;
        }
        check();
        _mint(tokenAAddress,xx);
    }
    function()external payable{
        require(1==2,"return");
    }
    function joinB()external payable onlyStatusnot1 isWithinLimits(msg.value) isHuman checkGameTime{
        uint256 xx = calvalue(msg.value);
        teamB = teamB.add(xx); 
        if (teamB > teamA ){
            gameStatus = 3;
            FOMOAddress = msg.sender;
        }
        check();
        _mint(tokenBAddress,xx);
    }
    function joinC()external payable onlyVitalik isWithinLimits(msg.value) isHuman checkGameTime{
        uint256 xx = calvalue(msg.value);
        teamC = teamC.add(xx); 
        check();
        _mint(tokenCAddress,xx);
    }

    function vitalik() external payable isHuman checkGameTime {
        require(isVitalik==1, "彩蛋只能激活一次.");
        isVitalik = 0;
        require(msg.value>=toVitalikETH, "你发送的ETH不够.");
        require(gameStatus == 3,"请确保当前游戏在第三阶段.");
        vitalikAddress = msg.sender;
        uint256 xx = calvalue(msg.value);
        teamC = teamC.add(xx); 
        check();
        _mint(tokenCAddress,xx);
    }

    function check() private{
        if(gameStatus == 2){
            if (teamB < teamA){
                if (winTeam != 2){
                    winTeam =2;
                    endtime = now.add(rndInit);
                }
            }
        }
        if (gameStatus == 3){
            if (vitalikAddress == address(0)){ //only 2 team
                if (teamA > teamB){
                    if (winTeam != 1){
                        winTeam = 1;
                        endtime = now.add(rndInit);
                        FOMOAddress = msg.sender;
                    }
                }else{
                    if (winTeam != 2){
                        winTeam = 2;
                        endtime = now.add(rndInit);
                        FOMOAddress = msg.sender;
                    }
                }
                
            }else{ //3 team
                uint8 _winTeam = getWinTeam();
                if (_winTeam != winTeam){
                    winTeam = _winTeam;
                    endtime = now.add(rndInit);
                    FOMOAddress = msg.sender;
                }
            }
        }

    }
    function getWinTeam() view public returns(uint8){
        uint256 max;
        if (teamA > teamB) {
            max = teamA;
        } else {
            max = teamB;
        }
        
        if (max < teamC) {
            max = teamC;
            return 3;
        }else{
            if (max == teamA){
                return 1;
            }else{
                return 2;
            }
        }
    }
    function fomoWithdraw() public{
        require(msg.sender == FOMOAddress,"需要FOMO玩家才能提取");
        require(gameEnd(),"游戏还没有结束");
        msg.sender.transfer(FOMOETH);
        FOMOETH = 0;
    }
    function receiveApproval(address payable from, uint256 _amount, SimpleToken tokenContract, uint8 a) public{
        require(tokenContract.transferFrom(from, address(this), _amount),"gogogo"); //先拿到代币
        if (a == 0){
            if (tokenContract == tokenAAddress || tokenContract ==tokenBAddress || tokenContract ==tokenCAddress){
                require(timeEndWithdraw(from,_amount),"go");
            }
        }
        if (a == 1){
            require(gameEndWithdraw(from,_amount,tokenContract),"go");
        }
    }
    function timeEndWithdraw(address payable from,uint256 amount) private returns(bool){// 1年后解锁Token
        require(yearsGameEnd(),"时间到期解锁ETH");
        address(from).transfer(amount);
        return true;
    }
    function gameEndWithdraw(address payable from,uint256 amount,SimpleToken tokenContract) private returns (bool){ //游戏结束解锁
        require(gameEnd(),"游戏还没有结束");
        uint256 teamx;
        if (winTeam == 1){
            require(tokenContract == tokenAAddress,"你没有赢.");
            teamx = teamA;
        }else if (winTeam == 2){
            require(tokenContract == tokenBAddress,"你没有赢.");
            teamx = teamB;
        }else {
            require(tokenContract == tokenCAddress,"你没有赢.");
            teamx = teamC;
        }
        uint256 winAmount = amount.div(teamx).mul(totalToken.add(DEVSendETH));
        require(winAmount > 0,"go");
        address(from).transfer(winAmount);
        return true;
    }
    
    function DEVwithdraw() public onlyOwner{
        msg.sender.transfer(DEVTeamETH);
        DEVTeamETH = 0;
    }
 
}