Contract 0x37312eb44dd9a0af3162bc7bcb5acd981bb955a5

 

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$0.00

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0xdbfa704386afb9c985b14b729e23b08584f2d32d2c0d718d44d512a0a9a470d7Set Approval For...119889772021-10-22 9:18:101 min ago0x02404f732eafe7aa8cf4157f22bd8ad9bcc3fae0 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x1d3799f1f3fed09905ffea5060d97e6de1f1983ef31ae51127b51bca40c72006Set Approval For...119881142021-10-22 8:34:5144 mins ago0x2724999e0806924418380c2bcdfd62a147344ecb IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0xae05a0275a2bfb018f29d1983a037b91debbbcf94574326327eeb7c0bc22bc21Set Approval For...119879162021-10-22 8:23:3355 mins ago0x5eed52bc929b8637a9753abea51bdac25836279c IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0xe481c7f4fce22e3d8a30a492f5defe02849387f92b7e35491d6cb57f17ec703cSet Approval For...119878662021-10-22 8:20:2059 mins ago0x71553f71c6ada52550019ef85df921c2f8791cd1 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x762f3000c3f191594d1b10f719f67b72cceedfe3fd278f5bdcc8682d84c0492fSet Approval For...119877572021-10-22 8:14:081 hr 5 mins ago0x5110b9aecc5ba15c84c6851b33f02b5b4b1e57bb IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x090e38b7278f4f81d3e10978cd228306aa2de4fdb57846c3d48de7339a0e6f61Set Approval For...119877272021-10-22 8:12:371 hr 6 mins ago0x31c918fb7d9b9ad11b931ecaa8422510097b16da IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x6f9f79517a242913fc4f3c2b9eeaa60ff73dcb63ad89f3f08f8a5815740f647bSet Approval For...119876082021-10-22 8:06:361 hr 12 mins ago0x909f8440eee9fd205a4a4beef053aac20b8f445d IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x64d80097b9c2a74e3f0686ad210e7953775f98fc36a5924a70736db8a3aaf05bSet Approval For...119868772021-10-22 7:29:211 hr 50 mins ago0x6ad32af8802456d1cd9e42e360ccb03bc9da67a9 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x319c4fa340d422fbfdf009f99d78427a2bcff456b829f0c0ca9d4eb267b01a2eSet Approval For...119852812021-10-22 6:06:423 hrs 12 mins ago0x2390b316adce288f2f7f2e2df94a98444d45cf45 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x4fb273c02ebbf04a0a73b555488e5ba4dbe328670c3e80c9f903ea157806ff95Set Approval For...119851702021-10-22 6:01:093 hrs 18 mins ago0x397ab6ea02ba815761187db20d52ae63eca428d9 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x75d17e128302ad5288c3403ac45e59741b98b73861a5d4cb70f7dc7766e0cb74Transfer From119850702021-10-22 5:56:023 hrs 23 mins ago0x337f32bac2d9f0b56424a57916cf43a81e2c82fc IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.000340065
0x5c9f3e7e65b67bd0c4443e5be9f0e4d6cd7caf8bdea7a26bcc0a90f79880aae4Set Approval For...119847012021-10-22 5:33:583 hrs 45 mins ago0x6718ea6acfeff212ee95387bc845feb64b87e738 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x1244b4412018746f6c69cd308aa6b17d8e5edc23f51c7fa9509c1856e32ccc89Set Approval For...119845542021-10-22 5:25:153 hrs 54 mins ago0x22e0fcaf75976d54801807852710474a34bef044 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x586d089a14669362998e4a7040d5f01e45b27582cf4b6c80bf3b96027fa38499Set Approval For...119841252021-10-22 4:59:054 hrs 20 mins ago0xaa7d68e5c25ca6a0d363f0eff13e14c6a0e72597 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x04e99a89d4110d906e2390fa3170ae9f5d559d10516dc236e4e9607b48795fc4Set Approval For...119840332021-10-22 4:53:114 hrs 26 mins ago0x15728dc02fcbdba945108cfa0fd449abe5e64c19 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x822c6dd36d519319bab785e53c6d43001571af2534f97f67115c9dbb06cb5c83Set Approval For...119836482021-10-22 4:33:224 hrs 46 mins ago0x35a9984d4acf1425712e4ecc61cfe39e3257aae4 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0xc2056a054a06a5cf5e6c3cfcb83adce29a2995526b49376ab3a35941a6c2e70bSet Approval For...119831122021-10-22 4:04:545 hrs 14 mins ago0x27292e1fad48e6509a676fb8264ce3379c4cdcd8 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0xa32aaa67a2b88e155633e7cb63dba4022828be1f11fcb4c9937ac31e2b8e564bSet Approval For...119818682021-10-22 3:00:046 hrs 19 mins ago0xc84fcbda6a1bd0b4a68fd4c16df8f873079fd7b8 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x733d182c053735dd3cf10e83940d19b4606ddfad1e9ee679624d3fbd2d73bbd8Set Approval For...119810452021-10-22 2:18:337 hrs ago0x19b43e8a6c6f44c580b21936866ad17e5b0654ee IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0xe3f23af59b4db595318db4afc3f3683218f57d6ce0e3f7dac1136ec0fa386519Set Approval For...119790672021-10-22 0:36:388 hrs 42 mins ago0x34b39c67cd94f95a08bc5e206329cb2f8d5518bb IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0xb59e6adf4f087402f467f10b887fb08cef5b0d011b315c7f58a486cf8ceffa8bSet Approval For...119787912021-10-22 0:21:578 hrs 57 mins ago0x997ee3a129bd9292f478303b534284aa2841d9a5 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x954e0454dfcecb7c04f1004f1512264755315983a5a3fd349c82941f12ea9134Transfer From119784372021-10-22 0:04:129 hrs 15 mins ago0x64363fa36b7f775e57d2879eaaa41b9cf0da32fc IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.000340065
0xefcd60d30592de224a8e2751481460aa2007258c70a869283de86ae307b30746Set Approval For...119775362021-10-21 23:19:0410 hrs ago0xc942db53fdd98d3297e1a61931e277026ec7b0c7 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x4f61d3fd06c3b6d13d7a3013bcbbbe9b15e8ec5d839211ebd15423df0cd16056Set Approval For...119774202021-10-21 23:13:1610 hrs 6 mins ago0xd4c03c936872ad1110bfe7da08c5ce86f86dc4ce IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
0x5b08b75469a9f9a28f87e1efc0927f1ba30888fce75d0403ec3f1c8f1732d257Set Approval For...119770372021-10-21 22:54:0710 hrs 25 mins ago0x79ec361496b6e63631997f589a2599de56acb103 IN  0x37312eb44dd9a0af3162bc7bcb5acd981bb955a50 BNB0.0002281
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Minimal Proxy Contract for 0x37312eb44dd9a0af3162bc7bcb5acd981bb955a5

Contract Name:
NftCharacters

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
Decompile ByteCode

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 15 : token-ERC721-ERC721.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "./token-ERC721-IERC721.sol";
import "./token-ERC721-IERC721Receiver.sol";
import "./token-ERC721-extensions-IERC721Metadata.sol";
import "../../lib/Address.sol";
import "../../interface/Context.sol";
import "./utils-Strings.sol";
import "./utils-introspection-ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string internal _name;

    // Token symbol
    string internal _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) internal _owners;

    // Mapping owner address to token count
    mapping(address => uint256) internal _balances;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) internal _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
    }

    /**
     * @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 returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");
        
        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

File 2 of 15 : token-ERC721-IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./utils-introspection-IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

File 3 of 15 : token-ERC721-IERC721Receiver.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

File 4 of 15 : token-ERC721-extensions-ERC721Burnable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./token-ERC721-ERC721.sol";
import "../../interface/Ownable.sol";

/**
 * @title ERC721 Burnable Token
 * @dev ERC721 Token that can be irreversibly burned (destroyed).
 */
abstract contract ERC721Burnable is Context, ERC721 {
    /**
     * @dev Burns `tokenId`. See {ERC721-_burn}.
     *
     * Requirements:
     *
     * - The caller must own `tokenId` or be an approved operator.
     */
    function burn(uint256 tokenId) public virtual {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
        _burn(tokenId);
    }
}

File 5 of 15 : token-ERC721-extensions-ERC721Enumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./token-ERC721-ERC721.sol";
import "./token-ERC721-extensions-IERC721Enumerable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) internal _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, tokenId);

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);  
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

File 6 of 15 : token-ERC721-extensions-IERC721Enumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./token-ERC721-IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

File 7 of 15 : token-ERC721-extensions-IERC721Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./token-ERC721-IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

File 8 of 15 : utils-Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

File 9 of 15 : utils-introspection-ERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./utils-introspection-IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 10 of 15 : utils-introspection-IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

File 11 of 15 : Context.sol
// SPDX-License-Identifier: Unlicensed
pragma solidity >=0.6.0 <0.9.0;

abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return payable(msg.sender);
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

File 12 of 15 : Ownable.sol
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.0;

import "./Context.sol";

abstract contract Ownable is Context {
    address internal _owner;
    mapping(address => bool) internal _authorizedActor;

    event AuthorityTransferred(
        address indexed previousOwner,
        address indexed newOwner,
        uint256 authorityType
    );

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        _authorizedActor[msgSender] = true;
        emit AuthorityTransferred(address(0), msgSender, 1);
        emit AuthorityTransferred(address(0), msgSender, 2);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    function isAuthorized(address actor) public view returns(bool) {
      return _authorizedActor[actor];
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    modifier onlyAuthorized() {
      require(owner() == _msgSender() || _authorizedActor[msg.sender], "No permission");
      _;
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyAuthorized {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        emit AuthorityTransferred(_owner, newOwner, 1);
        _owner = newOwner;
    }

    function updateActorPermission(address actor, bool authorized) public onlyAuthorized {
      _authorizedActor[actor] = authorized;
    }

    function isActorAuthorized(address actor) public view returns(bool) {
      return _authorizedActor[actor];
    }
}

File 13 of 15 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 14 of 15 : NftCharacters.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

import "../../../base/nft/token-ERC721-ERC721.sol";
import "../../../base/nft/token-ERC721-extensions-ERC721Burnable.sol";
import "../../../base/nft/token-ERC721-extensions-ERC721Enumerable.sol";
import "../../../model/CharacterInfo.sol";

contract NftCharacters is ERC721, ERC721Burnable, ERC721Enumerable, Ownable {

  mapping(uint256 => uint256) private _expList;
  mapping(uint256 => uint256) private _rankRewards;
  mapping(uint256 => uint256) private _infoList;

  uint256 private _maxTokenId;
  uint256 private _maxOwned;

  address marketAddress;

  uint256 map;
  bool private _isInitialized;

  uint256 private _totalMintedNfts;

  constructor(string memory name_, string memory symbol_) ERC721(name_, symbol_) {
  }

  function setInitialized() public onlyAuthorized {
    _isInitialized = true;
  }

  function initialize(
    uint256 _map, string memory name, string memory symbol, uint256 maxOwned, address owner, address actor
  ) public {
    require(!_isInitialized, "Already initialized");
    _isInitialized = true;
    map = _map;
    _name = name;
    _symbol = symbol;
    _owner = owner;
    _authorizedActor[actor] = true;
    _maxOwned = maxOwned;
    _totalMintedNfts = 0;
  }

  function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal override(ERC721, ERC721Enumerable) {
    super._beforeTokenTransfer(from, to, tokenId);

    if (to != address(this) && to != address(0)) {
      require(balanceOf(to) < _maxOwned, "Exceed limit");
    }

    if (from == address(0)) {
      _totalMintedNfts += 1;
      return;
    }

    if (to == address(0) && _totalMintedNfts > 0) {
      _totalMintedNfts -= 1;
    }
  }

  function supportsInterface(bytes4 interfaceId) public view override(ERC721, ERC721Enumerable)
    returns (bool) {
      return super.supportsInterface(interfaceId);
  }

  function mintCharacter(
    address owner, uint256 characterType, uint256 rank, uint256 power
  ) public onlyOwner returns(uint256) {
    _maxTokenId += 1;

    _infoList[_maxTokenId] = makeCharacterInfo(characterType, rank, 1, 2);
    _rankRewards[_maxTokenId] = power;
    _safeMint(owner, _maxTokenId);

    return _maxTokenId;
  }

  function mintCharacterWithFullInfo(
    address owner, CharacterInfo memory character
  ) public onlyOwner returns(uint256) {
    _maxTokenId += 1;

    _infoList[_maxTokenId] = makeCharacterInfo(
      character.characterType, character.rank, character.level, 2
    );
    _expList[_maxTokenId] = character.exp;
    _rankRewards[_maxTokenId] = character.power;
    _safeMint(owner, _maxTokenId);

    return _maxTokenId;
  }

  function getCharacter(uint256 tokenId) public view returns(CharacterInfo memory) {
    CharacterInfo memory character = parseCharacterInfo(tokenId);

    character.tokenId = tokenId;
    character.exp = _expList[tokenId];
    character.power = _rankRewards[tokenId];

    return character;
  }

  function isOwnerOfAll(address owner, uint256[] memory tokenIds) public view returns(bool) {
    for(uint256 i=0;i<tokenIds.length;i++) {
      if(_owners[tokenIds[i]] != owner) {
        return false;
      }
    }

    return true;
  }

  function updateCharacterInfo(
    uint256 tokenId, CharacterInfo memory character
  ) public onlyAuthorized {
    require(tokenId > 0 && tokenId <= _maxTokenId, "TokenId Invalid");

    _expList[tokenId] = character.exp;
    _rankRewards[tokenId] = character.power;
    _infoList[tokenId] = makeCharacterInfo(
      character.characterType, character.rank, character.level, character.status
    );
  }

  function updateMaxOwned(uint256 maxOwned) public onlyAuthorized {
    require(maxOwned > 0, "Cannot be zero");
    _maxOwned = maxOwned;
  }

  function getMaxOwned() public view returns(uint256) {
    return _maxOwned;
  }

  function updateMarketAddress(address _marketAddress) public onlyAuthorized {
    require(_marketAddress != address(0));

    _operatorApprovals[address(this)][marketAddress] = false;
    marketAddress = _marketAddress;
    _operatorApprovals[address(this)][marketAddress] = true;
  }

  function getMaxTokenId() public view returns(uint256) {
    return _maxTokenId;
  }

  function updateLevelAndExp(uint256 tokenId, uint256 level, uint256 exp) public onlyAuthorized {
    _expList[tokenId] = exp;

    uint256 info = uint256(uint24(_infoList[tokenId]));
    info |= level << 24;

    _infoList[tokenId] = info;
  }

  function updateLevelAndExpList(
    uint256[] memory characterIds, uint256[] memory levels, uint256[] memory expList
  ) public onlyAuthorized {
    for(uint256 i=0;i<characterIds.length;i++) {
      updateLevelAndExp(characterIds[i], levels[i], expList[i]);
    }
  }

  function getTotalMintedNfts() public view returns(uint256) {
    return _totalMintedNfts;
  }

  function makeCharacterInfo(
    uint256 characterType, uint256 rank, uint256 level, uint256 status
  ) private pure returns(uint256) {
    uint256 info = characterType; // uint8
    info |= rank << 8; // uint8
    info |= status << 16; // uint8
    info |= level << 24; // uint8

    return info;
  }

  function parseCharacterInfo(uint256 tokenId) private view returns(CharacterInfo memory) {
    CharacterInfo memory characterInfo;
    uint256 info = _infoList[tokenId];

    characterInfo.characterType = uint256(uint8(info));
    characterInfo.rank = uint256(uint8(info >> 8));
    characterInfo.status = uint256(uint8(info >> 16));
    characterInfo.level = uint256(uint8(info >> 24));
    characterInfo.elementType = map;
    characterInfo.breed = map;

    return characterInfo;
  }
}

File 15 of 15 : CharacterInfo.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

struct CharacterInfo {
  uint256 tokenId; // uint256
  uint256 exp; // uint256
  uint256 power; // uint256
  uint256 characterType; // uint8
  uint256 rank; // uint8
  uint256 level; // uint32
  uint256 breed; // uint8
  uint256 status; // uint8; 1 - egg; 2 - able to fight; 3 - on sale;
  uint256 elementType; // uint8; 1 - fire; 2 - water; 3 - earth; 4 - wood; 5 - metal
}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "london",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract ABI

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CharacterInfo","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getMaxOwned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getMaxTokenId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTotalMintedNfts","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_map","type":"uint256"},{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"uint256","name":"maxOwned","type":"uint256"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"actor","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"actor","type":"address"}],"name":"isActorAuthorized","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"actor","type":"address"}],"name":"isAuthorized","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"}],"name":"isOwnerOfAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"characterType","type":"uint256"},{"internalType":"uint256","name":"rank","type":"uint256"},{"internalType":"uint256","name":"power","type":"uint256"}],"name":"mintCharacter","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"components":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"exp","type":"uint256"},{"internalType":"uint256","name":"power","type":"uint256"},{"internalType":"uint256","name":"characterType","type":"uint256"},{"internalType":"uint256","name":"rank","type":"uint256"},{"internalType":"uint256","name":"level","type":"uint256"},{"internalType":"uint256","name":"breed","type":"uint256"},{"internalType":"uint256","name":"status","type":"uint256"},{"internalType":"uint256","name":"elementType","type":"uint256"}],"internalType":"struct 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CharacterInfo","name":"character","type":"tuple"}],"name":"updateCharacterInfo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"level","type":"uint256"},{"internalType":"uint256","name":"exp","type":"uint256"}],"name":"updateLevelAndExp","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"characterIds","type":"uint256[]"},{"internalType":"uint256[]","name":"levels","type":"uint256[]"},{"internalType":"uint256[]","name":"expList","type":"uint256[]"}],"name":"updateLevelAndExpList","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_marketAddress","type":"address"}],"name":"updateMarketAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"maxOwned","type":"uint256"}],"name":"updateMaxOwned","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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