第83篇 笔记-猜拳游戏智能合约

Posted 2021-11-21 wonderBlock

本合约实现经典的包袱剪刀锤子猜拳游戏；

源码：

pragma solidity 0.5.10;

contract rps {
  address public owner;
  uint256 public balance;
  uint256 public gamesPlayed;
  string public lastResult;

  enum hand {ROCK, PAPER, SCISSORS}
  enum result {WIN, LOSE, TIE}
  event Outcome(string result);

  constructor() public payable{
    owner = msg.sender;
    balance = msg.value;
    gamesPlayed = 0;
    lastResult = "";
  }

  // Give balance to bot
  function giveBalance() public payable{
    if (msg.sender == owner) {
      balance += msg.value;
    }
  }

  // Get games played
  function getGamesPlayed() public view returns(uint256) {
    return gamesPlayed;
  }

  // Get bot balance
  function getBalance() public view returns(uint256){
    return balance;
  }

  // Get last game result
  function getLastResult() public view returns(string memory){
    return lastResult;
  }

  // Withdraw from bot
  function with