pragma solidity ^0.8.4;




contract KitaroPixelWorld is ERC721A, Ownable, ReentrancyGuard {
  uint256 public MAX_SUPPLY = 4000;
  uint256 public MINT_PRICE = 0.01 * 10 ** 18; // 0.01 ETH
  string public baseURI = "https://shark-app-d4r9v.ondigitalocean.app/api/v1/nft/eu17tig48ufccqdpydk1yb79/";
  bool public pausedMint = false;

  constructor() ERC721A("Kitaro Pixel World", "KITARO") {}

  function mint(uint _amount) external payable nonReentrant {
    require(_amount > 0, "Invalid amount");
    require(pausedMint == false, "Mint is paused");
    require(totalSupply() + _amount <= MAX_SUPPLY, "Max supply exceeded");
    require(msg.value >= MINT_PRICE * _amount, "Invalid ETH value");
    payable(owner()).transfer(msg.value);
    _safeMint(msg.sender, _amount);
  }

  /**
    * @dev Returns the starting token ID.
    * To change the starting token ID, please override this function.
    */
  function _startTokenId() internal view virtual override returns (uint256) {
    return 1;
  }

  /**
    * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
    * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
    * by default, can be overriden in child contracts.
    */
  function _baseURI() internal view virtual override returns (string memory) {
    return baseURI;
  }

  function setBaseURI(string memory _newBaseURI) external onlyOwner {
    baseURI = _newBaseURI;
  }

  function setPausedMint() external onlyOwner {
    pausedMint = !pausedMint;
  }

  function setMintPrice(uint256 _price) external onlyOwner {
    MINT_PRICE = _price;
  }
}
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