DAPP系统开发项目方案

以下是一个简单的示例代码，演示如何实现基本的游戏逻辑：

pragma solidity ^0.8.0; contract CircleGame {    address[] public players;    uint public totalBalance;    uint public currentRound;    uint public currentTask;    uint public correctAnswer;    address public currentHost;        mapping (address => bool) public hasCompletedTask;        constructor() payable {        players.push(msg.sender);        totalBalance = msg.value;        currentRound = 1;        currentHost = msg.sender;        currentTask = 1;        correctAnswer = 42; //设定一个默认答案    }        function joinGame() public payable {        require(msg.value > 0, "You must send some ETH to join the game!");        players.push(msg.sender);        totalBalance += msg.value;    }        function completeTask(uint answer)