meta2032是一个基于链的nft(非同质化代币)平台,旨在创建一个虚拟的元宇宙生态系统,其中用户可以通过购
买、出售、交易和开发i76案例2o72演示9ii9持有不同类型的nft来参与游戏和社交互动。除此之外,meta2032还提供了一种新的方式来获取nft代
币:质押矿。
在meta2032上,用户可以将其拥有的nft代币质押到平台上,从而获得代币奖励。这个过程被称为质押矿,因为用户需要
质押(即锁定)一定数量的nft代币以获得奖励。meta2032平台的奖励代币为meta2032代币,这是平台的本地代币,也
是nft交易的货币。
下面我们来看一下如何使用智能合约实现meta2032质押nft矿功能。
智能合约实现
首先,我们需要定义一个名为meta2032staking的智能合约。该合约负责管理用户的质押操作,并根据质押数量奖励用户
meta2032代币。
scsscopy code// spdx-license-identifier: gpl-3.0pragma solidity >=0.7.0 <0.9.0;import "./meta2032token.sol";import "./nfttoken.sol";contract meta2032staking { meta2032token private meta2032; nfttoken private nft; mapping(address => uint256) public stakedtokens; mapping(address => uint256) public lastupdatetime; uint256 public rewardpertoken; mapping(address => uint256) public rewards; constructor(address _meta2032address, address _nftaddress) { meta2032 = meta2032token(_meta2032address); nft = nfttoken(_nftaddress); rewardpertoken = 0; } function stake(uint256 _amount) public { require(_amount > 0, "amount cannot be zero"); require(nft.balanceof(msg.sender) >= _amount, "insufficient nft balance"); meta2032.transferfrom(msg.sender, address(this), _amount); stakedtokens[msg.sender] += _amount; lastupdatetime[msg.sender] = block.timestamp; } function withdraw(uint256 _amount) public { require(_amount > 0, "amount cannot be zero"); require(stakedtokens[msg.sender] >= _amount, "insufficient staked tokens"); meta2032.transfer(msg.sender, _amount); stakedtokens[msg.sender] -= _amount; lastupdatetime[msg.sender] = block.timestamp; } function claimrewards() public { uint256 reward = rewards[msg.sender]; require(reward > 0, "no rewards to claim"); rewards[msg.sender] = 0; meta2032.transfer(msg.sender, reward); } function updaterewardpertoken() public { uint256 totalstakedtokens = meta2032.balanceof(address(this)); uint256 timesincelastupdate = block.timestamp - rewardpertoken; if (totalstaked