以下是一個(gè)簡(jiǎn)單的示例代碼，演示如何實(shí)現(xiàn)基本的游戲邏輯：

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; //設(shè)定一個(gè)默認(rèn)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)