文件 6 的 13:ERC721Burnable.sol
文件 9 的 13:IERC721Metadata.sol
文件 10 的 13:IERC721Receiver.sol
文件 13 的 13:cw.sol
pragma solidity ^0.8.0;
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/access/Ownable.sol";
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Counters.sol";
contract CheetahWorld is ERC721Burnable, Ownable {
using Strings for uint256;
using Counters for Counters.Counter;
string public baseURI;
string public baseExtension = ".json";
uint256 public maxSupply = 3333;
uint256 public price = 0.05 ether;
uint256 public maxPerWallet = 5;
mapping(address => uint256) walletMinted;
Counters.Counter private _tokenIdTracker;
constructor(string memory _initBaseURI) ERC721("CheetahWorld", "CW")
{
setBaseURI(_initBaseURI);
}
function totalToken() public view returns (uint256) {
return _tokenIdTracker.current();
}
function mainSale(uint8 mintTotal) public payable
{
uint256 totalMinted = mintTotal + walletMinted[msg.sender];
require(totalMinted <= maxPerWallet, "You surpassed the minting limit!");
require(mintTotal >= 1 , "Mint Amount Incorrect");
require(msg.value >= (price * mintTotal), "Minting a Cheetah Costs 0.05ETH Each!");
require(totalToken() < maxSupply, "SOLD OUT!");
for(uint i=0;i<mintTotal;i++)
{
walletMinted[msg.sender]++;
_tokenIdTracker.increment();
require(totalToken() < maxSupply, "SOLD OUT!");
_safeMint(msg.sender, totalToken());
}
}
function withdrawContractEther(address payable recipient) external onlyOwner
{
recipient.transfer(getBalance());
}
function getBalance() public view returns(uint)
{
return address(this).balance;
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory)
{
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0 ? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension)) : "";
}
}
{
"compilationTarget": {
"cw.sol": "CheetahWorld"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": []
}
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view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address 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