Mumbai Testnet

Token

ERC-1155

Overview

Max Total Supply

0

Holders

31

Total Transfers

-

Market

Onchain Market Cap

$0.00

Circulating Supply Market Cap

-
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Contract Source Code Verified (Exact Match)

Contract Name:
GameItemsMock

Compiler Version
v0.8.13+commit.abaa5c0e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 29 : IERC2771Recipient.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;

/**
 * @title The ERC-2771 Recipient Base Abstract Class - Declarations
 *
 * @notice A contract must implement this interface in order to support relayed transaction.
 *
 * @notice It is recommended that your contract inherits from the ERC2771Recipient contract.
 */
abstract contract IERC2771Recipient {

    /**
     * :warning: **Warning** :warning: The Forwarder can have a full control over your Recipient. Only trust verified Forwarder.
     * @param forwarder The address of the Forwarder contract that is being used.
     * @return isTrustedForwarder `true` if the Forwarder is trusted to forward relayed transactions by this Recipient.
     */
    function isTrustedForwarder(address forwarder) public virtual view returns(bool);

    /**
     * @notice Use this method the contract anywhere instead of msg.sender to support relayed transactions.
     * @return sender The real sender of this call.
     * For a call that came through the Forwarder the real sender is extracted from the last 20 bytes of the `msg.data`.
     * Otherwise simply returns `msg.sender`.
     */
    function _msgSender() internal virtual view returns (address);

    /**
     * @notice Use this method in the contract instead of `msg.data` when difference matters (hashing, signature, etc.)
     * @return data The real `msg.data` of this call.
     * For a call that came through the Forwarder, the real sender address was appended as the last 20 bytes
     * of the `msg.data` - so this method will strip those 20 bytes off.
     * Otherwise (if the call was made directly and not through the forwarder) simply returns `msg.data`.
     */
    function _msgData() internal virtual view returns (bytes calldata);
}

File 2 of 29 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @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 onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 3 of 29 : ERC1155.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC1155/ERC1155.sol)

pragma solidity ^0.8.0;

import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./extensions/IERC1155MetadataURI.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of the basic standard multi-token.
 * See https://eips.ethereum.org/EIPS/eip-1155
 * Originally based on code by Enjin: https://github.com/enjin/erc-1155
 *
 * _Available since v3.1._
 */
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
    using Address for address;

    // Mapping from token ID to account balances
    mapping(uint256 => mapping(address => uint256)) private _balances;

    // Mapping from account to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    // Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
    string private _uri;

    /**
     * @dev See {_setURI}.
     */
    constructor(string memory uri_) {
        _setURI(uri_);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC1155).interfaceId ||
            interfaceId == type(IERC1155MetadataURI).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC1155MetadataURI-uri}.
     *
     * This implementation returns the same URI for *all* token types. It relies
     * on the token type ID substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * Clients calling this function must replace the `\{id\}` substring with the
     * actual token type ID.
     */
    function uri(uint256) public view virtual override returns (string memory) {
        return _uri;
    }

    /**
     * @dev See {IERC1155-balanceOf}.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
        require(account != address(0), "ERC1155: address zero is not a valid owner");
        return _balances[id][account];
    }

    /**
     * @dev See {IERC1155-balanceOfBatch}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] memory accounts, uint256[] memory ids)
        public
        view
        virtual
        override
        returns (uint256[] memory)
    {
        require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");

        uint256[] memory batchBalances = new uint256[](accounts.length);

        for (uint256 i = 0; i < accounts.length; ++i) {
            batchBalances[i] = balanceOf(accounts[i], ids[i]);
        }

        return batchBalances;
    }

    /**
     * @dev See {IERC1155-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC1155-isApprovedForAll}.
     */
    function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[account][operator];
    }

    /**
     * @dev See {IERC1155-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: caller is not token owner or approved"
        );
        _safeTransferFrom(from, to, id, amount, data);
    }

    /**
     * @dev See {IERC1155-safeBatchTransferFrom}.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) public virtual override {
        require(
            from == _msgSender() || isApprovedForAll(from, _msgSender()),
            "ERC1155: caller is not token owner or approved"
        );
        _safeBatchTransferFrom(from, to, ids, amounts, data);
    }

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();
        uint256[] memory ids = _asSingletonArray(id);
        uint256[] memory amounts = _asSingletonArray(amount);

        _beforeTokenTransfer(operator, from, to, ids, amounts, data);

        uint256 fromBalance = _balances[id][from];
        require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }
        _balances[id][to] += amount;

        emit TransferSingle(operator, from, to, id, amount);

        _afterTokenTransfer(operator, from, to, ids, amounts, data);

        _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function _safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
        require(to != address(0), "ERC1155: transfer to the zero address");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; ++i) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = _balances[id][from];
            require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
            _balances[id][to] += amount;
        }

        emit TransferBatch(operator, from, to, ids, amounts);

        _afterTokenTransfer(operator, from, to, ids, amounts, data);

        _doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
    }

    /**
     * @dev Sets a new URI for all token types, by relying on the token type ID
     * substitution mechanism
     * https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
     *
     * By this mechanism, any occurrence of the `\{id\}` substring in either the
     * URI or any of the amounts in the JSON file at said URI will be replaced by
     * clients with the token type ID.
     *
     * For example, the `https://token-cdn-domain/\{id\}.json` URI would be
     * interpreted by clients as
     * `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
     * for token type ID 0x4cce0.
     *
     * See {uri}.
     *
     * Because these URIs cannot be meaningfully represented by the {URI} event,
     * this function emits no events.
     */
    function _setURI(string memory newuri) internal virtual {
        _uri = newuri;
    }

    /**
     * @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function _mint(
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");

        address operator = _msgSender();
        uint256[] memory ids = _asSingletonArray(id);
        uint256[] memory amounts = _asSingletonArray(amount);

        _beforeTokenTransfer(operator, address(0), to, ids, amounts, data);

        _balances[id][to] += amount;
        emit TransferSingle(operator, address(0), to, id, amount);

        _afterTokenTransfer(operator, address(0), to, ids, amounts, data);

        _doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function _mintBatch(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        require(to != address(0), "ERC1155: mint to the zero address");
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, address(0), to, ids, amounts, data);

        for (uint256 i = 0; i < ids.length; i++) {
            _balances[ids[i]][to] += amounts[i];
        }

        emit TransferBatch(operator, address(0), to, ids, amounts);

        _afterTokenTransfer(operator, address(0), to, ids, amounts, data);

        _doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
    }

    /**
     * @dev Destroys `amount` tokens of token type `id` from `from`
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `from` must have at least `amount` tokens of token type `id`.
     */
    function _burn(
        address from,
        uint256 id,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC1155: burn from the zero address");

        address operator = _msgSender();
        uint256[] memory ids = _asSingletonArray(id);
        uint256[] memory amounts = _asSingletonArray(amount);

        _beforeTokenTransfer(operator, from, address(0), ids, amounts, "");

        uint256 fromBalance = _balances[id][from];
        require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
        unchecked {
            _balances[id][from] = fromBalance - amount;
        }

        emit TransferSingle(operator, from, address(0), id, amount);

        _afterTokenTransfer(operator, from, address(0), ids, amounts, "");
    }

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     */
    function _burnBatch(
        address from,
        uint256[] memory ids,
        uint256[] memory amounts
    ) internal virtual {
        require(from != address(0), "ERC1155: burn from the zero address");
        require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");

        address operator = _msgSender();

        _beforeTokenTransfer(operator, from, address(0), ids, amounts, "");

        for (uint256 i = 0; i < ids.length; i++) {
            uint256 id = ids[i];
            uint256 amount = amounts[i];

            uint256 fromBalance = _balances[id][from];
            require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
            unchecked {
                _balances[id][from] = fromBalance - amount;
            }
        }

        emit TransferBatch(operator, from, address(0), ids, amounts);

        _afterTokenTransfer(operator, from, address(0), ids, amounts, "");
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(
        address owner,
        address operator,
        bool approved
    ) internal virtual {
        require(owner != operator, "ERC1155: setting approval status for self");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning, as well as batched variants.
     *
     * The same hook is called on both single and batched variants. For single
     * transfers, the length of the `ids` and `amounts` arrays will be 1.
     *
     * Calling conditions (for each `id` and `amount` pair):
     *
     * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * of token type `id` will be  transferred to `to`.
     * - When `from` is zero, `amount` tokens of token type `id` will be minted
     * for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
     * will be burned.
     * - `from` and `to` are never both zero.
     * - `ids` and `amounts` have the same, non-zero length.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {}

    /**
     * @dev Hook that is called after any token transfer. This includes minting
     * and burning, as well as batched variants.
     *
     * The same hook is called on both single and batched variants. For single
     * transfers, the length of the `id` and `amount` arrays will be 1.
     *
     * Calling conditions (for each `id` and `amount` pair):
     *
     * - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * of token type `id` will be  transferred to `to`.
     * - When `from` is zero, `amount` tokens of token type `id` will be minted
     * for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
     * will be burned.
     * - `from` and `to` are never both zero.
     * - `ids` and `amounts` have the same, non-zero length.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {}

    function _doSafeTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
                if (response != IERC1155Receiver.onERC1155Received.selector) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non-ERC1155Receiver implementer");
            }
        }
    }

    function _doSafeBatchTransferAcceptanceCheck(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) private {
        if (to.isContract()) {
            try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
                bytes4 response
            ) {
                if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
                    revert("ERC1155: ERC1155Receiver rejected tokens");
                }
            } catch Error(string memory reason) {
                revert(reason);
            } catch {
                revert("ERC1155: transfer to non-ERC1155Receiver implementer");
            }
        }
    }

    function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
        uint256[] memory array = new uint256[](1);
        array[0] = element;

        return array;
    }
}

File 4 of 29 : IERC1155.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC1155/IERC1155.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC1155 compliant contract, as defined in the
 * https://eips.ethereum.org/EIPS/eip-1155[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155 is IERC165 {
    /**
     * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
     */
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);

    /**
     * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
     * transfers.
     */
    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] values
    );

    /**
     * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
     * `approved`.
     */
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);

    /**
     * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
     *
     * If an {URI} event was emitted for `id`, the standard
     * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
     * returned by {IERC1155MetadataURI-uri}.
     */
    event URI(string value, uint256 indexed id);

    /**
     * @dev Returns the amount of tokens of token type `id` owned by `account`.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function balanceOf(address account, uint256 id) external view returns (uint256);

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
     *
     * Requirements:
     *
     * - `accounts` and `ids` must have the same length.
     */
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
        external
        view
        returns (uint256[] memory);

    /**
     * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
     *
     * Emits an {ApprovalForAll} event.
     *
     * Requirements:
     *
     * - `operator` cannot be the caller.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address account, address operator) external view returns (bool);

    /**
     * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
     *
     * Emits a {TransferSingle} event.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}.
     * - `from` must have a balance of tokens of type `id` of at least `amount`.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
     * acceptance magic value.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes calldata data
    ) external;

    /**
     * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
     *
     * Emits a {TransferBatch} event.
     *
     * Requirements:
     *
     * - `ids` and `amounts` must have the same length.
     * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
     * acceptance magic value.
     */
    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) external;
}

File 5 of 29 : IERC1155Receiver.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev _Available since v3.1._
 */
interface IERC1155Receiver is IERC165 {
    /**
     * @dev Handles the receipt of a single ERC1155 token type. This function is
     * called at the end of a `safeTransferFrom` after the balance has been updated.
     *
     * NOTE: To accept the transfer, this must return
     * `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
     * (i.e. 0xf23a6e61, or its own function selector).
     *
     * @param operator The address which initiated the transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param id The ID of the token being transferred
     * @param value The amount of tokens being transferred
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
     */
    function onERC1155Received(
        address operator,
        address from,
        uint256 id,
        uint256 value,
        bytes calldata data
    ) external returns (bytes4);

    /**
     * @dev Handles the receipt of a multiple ERC1155 token types. This function
     * is called at the end of a `safeBatchTransferFrom` after the balances have
     * been updated.
     *
     * NOTE: To accept the transfer(s), this must return
     * `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
     * (i.e. 0xbc197c81, or its own function selector).
     *
     * @param operator The address which initiated the batch transfer (i.e. msg.sender)
     * @param from The address which previously owned the token
     * @param ids An array containing ids of each token being transferred (order and length must match values array)
     * @param values An array containing amounts of each token being transferred (order and length must match ids array)
     * @param data Additional data with no specified format
     * @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
     */
    function onERC1155BatchReceived(
        address operator,
        address from,
        uint256[] calldata ids,
        uint256[] calldata values,
        bytes calldata data
    ) external returns (bytes4);
}

File 6 of 29 : IERC1155MetadataURI.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol)

pragma solidity ^0.8.0;

import "../IERC1155.sol";

/**
 * @dev Interface of the optional ERC1155MetadataExtension interface, as defined
 * in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
 *
 * _Available since v3.1._
 */
interface IERC1155MetadataURI is IERC1155 {
    /**
     * @dev Returns the URI for token type `id`.
     *
     * If the `\{id\}` substring is present in the URI, it must be replaced by
     * clients with the actual token type ID.
     */
    function uri(uint256 id) external view returns (string memory);
}

File 7 of 29 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

File 8 of 29 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

File 9 of 29 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @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] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

File 10 of 29 : ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./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 11 of 29 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

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 12 of 29 : Math.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1);

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator,
        Rounding rounding
    ) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10**64) {
                value /= 10**64;
                result += 64;
            }
            if (value >= 10**32) {
                value /= 10**32;
                result += 32;
            }
            if (value >= 10**16) {
                value /= 10**16;
                result += 16;
            }
            if (value >= 10**8) {
                value /= 10**8;
                result += 8;
            }
            if (value >= 10**4) {
                value /= 10**4;
                result += 4;
            }
            if (value >= 10**2) {
                value /= 10**2;
                result += 2;
            }
            if (value >= 10**1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0);
        }
    }
}

File 13 of 29 : SafeCast.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.

pragma solidity ^0.8.0;

/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 *
 * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
 * all math on `uint256` and `int256` and then downcasting.
 */
library SafeCast {
    /**
     * @dev Returns the downcasted uint248 from uint256, reverting on
     * overflow (when the input is greater than largest uint248).
     *
     * Counterpart to Solidity's `uint248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toUint248(uint256 value) internal pure returns (uint248) {
        require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
        return uint248(value);
    }

    /**
     * @dev Returns the downcasted uint240 from uint256, reverting on
     * overflow (when the input is greater than largest uint240).
     *
     * Counterpart to Solidity's `uint240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toUint240(uint256 value) internal pure returns (uint240) {
        require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
        return uint240(value);
    }

    /**
     * @dev Returns the downcasted uint232 from uint256, reverting on
     * overflow (when the input is greater than largest uint232).
     *
     * Counterpart to Solidity's `uint232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toUint232(uint256 value) internal pure returns (uint232) {
        require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
        return uint232(value);
    }

    /**
     * @dev Returns the downcasted uint224 from uint256, reverting on
     * overflow (when the input is greater than largest uint224).
     *
     * Counterpart to Solidity's `uint224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.2._
     */
    function toUint224(uint256 value) internal pure returns (uint224) {
        require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
        return uint224(value);
    }

    /**
     * @dev Returns the downcasted uint216 from uint256, reverting on
     * overflow (when the input is greater than largest uint216).
     *
     * Counterpart to Solidity's `uint216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toUint216(uint256 value) internal pure returns (uint216) {
        require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
        return uint216(value);
    }

    /**
     * @dev Returns the downcasted uint208 from uint256, reverting on
     * overflow (when the input is greater than largest uint208).
     *
     * Counterpart to Solidity's `uint208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toUint208(uint256 value) internal pure returns (uint208) {
        require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
        return uint208(value);
    }

    /**
     * @dev Returns the downcasted uint200 from uint256, reverting on
     * overflow (when the input is greater than largest uint200).
     *
     * Counterpart to Solidity's `uint200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toUint200(uint256 value) internal pure returns (uint200) {
        require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
        return uint200(value);
    }

    /**
     * @dev Returns the downcasted uint192 from uint256, reverting on
     * overflow (when the input is greater than largest uint192).
     *
     * Counterpart to Solidity's `uint192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toUint192(uint256 value) internal pure returns (uint192) {
        require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
        return uint192(value);
    }

    /**
     * @dev Returns the downcasted uint184 from uint256, reverting on
     * overflow (when the input is greater than largest uint184).
     *
     * Counterpart to Solidity's `uint184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toUint184(uint256 value) internal pure returns (uint184) {
        require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
        return uint184(value);
    }

    /**
     * @dev Returns the downcasted uint176 from uint256, reverting on
     * overflow (when the input is greater than largest uint176).
     *
     * Counterpart to Solidity's `uint176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toUint176(uint256 value) internal pure returns (uint176) {
        require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
        return uint176(value);
    }

    /**
     * @dev Returns the downcasted uint168 from uint256, reverting on
     * overflow (when the input is greater than largest uint168).
     *
     * Counterpart to Solidity's `uint168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toUint168(uint256 value) internal pure returns (uint168) {
        require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
        return uint168(value);
    }

    /**
     * @dev Returns the downcasted uint160 from uint256, reverting on
     * overflow (when the input is greater than largest uint160).
     *
     * Counterpart to Solidity's `uint160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toUint160(uint256 value) internal pure returns (uint160) {
        require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
        return uint160(value);
    }

    /**
     * @dev Returns the downcasted uint152 from uint256, reverting on
     * overflow (when the input is greater than largest uint152).
     *
     * Counterpart to Solidity's `uint152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toUint152(uint256 value) internal pure returns (uint152) {
        require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
        return uint152(value);
    }

    /**
     * @dev Returns the downcasted uint144 from uint256, reverting on
     * overflow (when the input is greater than largest uint144).
     *
     * Counterpart to Solidity's `uint144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toUint144(uint256 value) internal pure returns (uint144) {
        require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
        return uint144(value);
    }

    /**
     * @dev Returns the downcasted uint136 from uint256, reverting on
     * overflow (when the input is greater than largest uint136).
     *
     * Counterpart to Solidity's `uint136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toUint136(uint256 value) internal pure returns (uint136) {
        require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
        return uint136(value);
    }

    /**
     * @dev Returns the downcasted uint128 from uint256, reverting on
     * overflow (when the input is greater than largest uint128).
     *
     * Counterpart to Solidity's `uint128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v2.5._
     */
    function toUint128(uint256 value) internal pure returns (uint128) {
        require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
        return uint128(value);
    }

    /**
     * @dev Returns the downcasted uint120 from uint256, reverting on
     * overflow (when the input is greater than largest uint120).
     *
     * Counterpart to Solidity's `uint120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toUint120(uint256 value) internal pure returns (uint120) {
        require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
        return uint120(value);
    }

    /**
     * @dev Returns the downcasted uint112 from uint256, reverting on
     * overflow (when the input is greater than largest uint112).
     *
     * Counterpart to Solidity's `uint112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toUint112(uint256 value) internal pure returns (uint112) {
        require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
        return uint112(value);
    }

    /**
     * @dev Returns the downcasted uint104 from uint256, reverting on
     * overflow (when the input is greater than largest uint104).
     *
     * Counterpart to Solidity's `uint104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toUint104(uint256 value) internal pure returns (uint104) {
        require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
        return uint104(value);
    }

    /**
     * @dev Returns the downcasted uint96 from uint256, reverting on
     * overflow (when the input is greater than largest uint96).
     *
     * Counterpart to Solidity's `uint96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.2._
     */
    function toUint96(uint256 value) internal pure returns (uint96) {
        require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
        return uint96(value);
    }

    /**
     * @dev Returns the downcasted uint88 from uint256, reverting on
     * overflow (when the input is greater than largest uint88).
     *
     * Counterpart to Solidity's `uint88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toUint88(uint256 value) internal pure returns (uint88) {
        require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
        return uint88(value);
    }

    /**
     * @dev Returns the downcasted uint80 from uint256, reverting on
     * overflow (when the input is greater than largest uint80).
     *
     * Counterpart to Solidity's `uint80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toUint80(uint256 value) internal pure returns (uint80) {
        require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
        return uint80(value);
    }

    /**
     * @dev Returns the downcasted uint72 from uint256, reverting on
     * overflow (when the input is greater than largest uint72).
     *
     * Counterpart to Solidity's `uint72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toUint72(uint256 value) internal pure returns (uint72) {
        require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
        return uint72(value);
    }

    /**
     * @dev Returns the downcasted uint64 from uint256, reverting on
     * overflow (when the input is greater than largest uint64).
     *
     * Counterpart to Solidity's `uint64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v2.5._
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
        return uint64(value);
    }

    /**
     * @dev Returns the downcasted uint56 from uint256, reverting on
     * overflow (when the input is greater than largest uint56).
     *
     * Counterpart to Solidity's `uint56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toUint56(uint256 value) internal pure returns (uint56) {
        require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
        return uint56(value);
    }

    /**
     * @dev Returns the downcasted uint48 from uint256, reverting on
     * overflow (when the input is greater than largest uint48).
     *
     * Counterpart to Solidity's `uint48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toUint48(uint256 value) internal pure returns (uint48) {
        require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
        return uint48(value);
    }

    /**
     * @dev Returns the downcasted uint40 from uint256, reverting on
     * overflow (when the input is greater than largest uint40).
     *
     * Counterpart to Solidity's `uint40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toUint40(uint256 value) internal pure returns (uint40) {
        require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
        return uint40(value);
    }

    /**
     * @dev Returns the downcasted uint32 from uint256, reverting on
     * overflow (when the input is greater than largest uint32).
     *
     * Counterpart to Solidity's `uint32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v2.5._
     */
    function toUint32(uint256 value) internal pure returns (uint32) {
        require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
        return uint32(value);
    }

    /**
     * @dev Returns the downcasted uint24 from uint256, reverting on
     * overflow (when the input is greater than largest uint24).
     *
     * Counterpart to Solidity's `uint24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toUint24(uint256 value) internal pure returns (uint24) {
        require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
        return uint24(value);
    }

    /**
     * @dev Returns the downcasted uint16 from uint256, reverting on
     * overflow (when the input is greater than largest uint16).
     *
     * Counterpart to Solidity's `uint16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v2.5._
     */
    function toUint16(uint256 value) internal pure returns (uint16) {
        require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
        return uint16(value);
    }

    /**
     * @dev Returns the downcasted uint8 from uint256, reverting on
     * overflow (when the input is greater than largest uint8).
     *
     * Counterpart to Solidity's `uint8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v2.5._
     */
    function toUint8(uint256 value) internal pure returns (uint8) {
        require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
        return uint8(value);
    }

    /**
     * @dev Converts a signed int256 into an unsigned uint256.
     *
     * Requirements:
     *
     * - input must be greater than or equal to 0.
     *
     * _Available since v3.0._
     */
    function toUint256(int256 value) internal pure returns (uint256) {
        require(value >= 0, "SafeCast: value must be positive");
        return uint256(value);
    }

    /**
     * @dev Returns the downcasted int248 from int256, reverting on
     * overflow (when the input is less than smallest int248 or
     * greater than largest int248).
     *
     * Counterpart to Solidity's `int248` operator.
     *
     * Requirements:
     *
     * - input must fit into 248 bits
     *
     * _Available since v4.7._
     */
    function toInt248(int256 value) internal pure returns (int248 downcasted) {
        downcasted = int248(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 248 bits");
    }

    /**
     * @dev Returns the downcasted int240 from int256, reverting on
     * overflow (when the input is less than smallest int240 or
     * greater than largest int240).
     *
     * Counterpart to Solidity's `int240` operator.
     *
     * Requirements:
     *
     * - input must fit into 240 bits
     *
     * _Available since v4.7._
     */
    function toInt240(int256 value) internal pure returns (int240 downcasted) {
        downcasted = int240(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 240 bits");
    }

    /**
     * @dev Returns the downcasted int232 from int256, reverting on
     * overflow (when the input is less than smallest int232 or
     * greater than largest int232).
     *
     * Counterpart to Solidity's `int232` operator.
     *
     * Requirements:
     *
     * - input must fit into 232 bits
     *
     * _Available since v4.7._
     */
    function toInt232(int256 value) internal pure returns (int232 downcasted) {
        downcasted = int232(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 232 bits");
    }

    /**
     * @dev Returns the downcasted int224 from int256, reverting on
     * overflow (when the input is less than smallest int224 or
     * greater than largest int224).
     *
     * Counterpart to Solidity's `int224` operator.
     *
     * Requirements:
     *
     * - input must fit into 224 bits
     *
     * _Available since v4.7._
     */
    function toInt224(int256 value) internal pure returns (int224 downcasted) {
        downcasted = int224(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 224 bits");
    }

    /**
     * @dev Returns the downcasted int216 from int256, reverting on
     * overflow (when the input is less than smallest int216 or
     * greater than largest int216).
     *
     * Counterpart to Solidity's `int216` operator.
     *
     * Requirements:
     *
     * - input must fit into 216 bits
     *
     * _Available since v4.7._
     */
    function toInt216(int256 value) internal pure returns (int216 downcasted) {
        downcasted = int216(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 216 bits");
    }

    /**
     * @dev Returns the downcasted int208 from int256, reverting on
     * overflow (when the input is less than smallest int208 or
     * greater than largest int208).
     *
     * Counterpart to Solidity's `int208` operator.
     *
     * Requirements:
     *
     * - input must fit into 208 bits
     *
     * _Available since v4.7._
     */
    function toInt208(int256 value) internal pure returns (int208 downcasted) {
        downcasted = int208(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 208 bits");
    }

    /**
     * @dev Returns the downcasted int200 from int256, reverting on
     * overflow (when the input is less than smallest int200 or
     * greater than largest int200).
     *
     * Counterpart to Solidity's `int200` operator.
     *
     * Requirements:
     *
     * - input must fit into 200 bits
     *
     * _Available since v4.7._
     */
    function toInt200(int256 value) internal pure returns (int200 downcasted) {
        downcasted = int200(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 200 bits");
    }

    /**
     * @dev Returns the downcasted int192 from int256, reverting on
     * overflow (when the input is less than smallest int192 or
     * greater than largest int192).
     *
     * Counterpart to Solidity's `int192` operator.
     *
     * Requirements:
     *
     * - input must fit into 192 bits
     *
     * _Available since v4.7._
     */
    function toInt192(int256 value) internal pure returns (int192 downcasted) {
        downcasted = int192(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 192 bits");
    }

    /**
     * @dev Returns the downcasted int184 from int256, reverting on
     * overflow (when the input is less than smallest int184 or
     * greater than largest int184).
     *
     * Counterpart to Solidity's `int184` operator.
     *
     * Requirements:
     *
     * - input must fit into 184 bits
     *
     * _Available since v4.7._
     */
    function toInt184(int256 value) internal pure returns (int184 downcasted) {
        downcasted = int184(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 184 bits");
    }

    /**
     * @dev Returns the downcasted int176 from int256, reverting on
     * overflow (when the input is less than smallest int176 or
     * greater than largest int176).
     *
     * Counterpart to Solidity's `int176` operator.
     *
     * Requirements:
     *
     * - input must fit into 176 bits
     *
     * _Available since v4.7._
     */
    function toInt176(int256 value) internal pure returns (int176 downcasted) {
        downcasted = int176(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 176 bits");
    }

    /**
     * @dev Returns the downcasted int168 from int256, reverting on
     * overflow (when the input is less than smallest int168 or
     * greater than largest int168).
     *
     * Counterpart to Solidity's `int168` operator.
     *
     * Requirements:
     *
     * - input must fit into 168 bits
     *
     * _Available since v4.7._
     */
    function toInt168(int256 value) internal pure returns (int168 downcasted) {
        downcasted = int168(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 168 bits");
    }

    /**
     * @dev Returns the downcasted int160 from int256, reverting on
     * overflow (when the input is less than smallest int160 or
     * greater than largest int160).
     *
     * Counterpart to Solidity's `int160` operator.
     *
     * Requirements:
     *
     * - input must fit into 160 bits
     *
     * _Available since v4.7._
     */
    function toInt160(int256 value) internal pure returns (int160 downcasted) {
        downcasted = int160(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 160 bits");
    }

    /**
     * @dev Returns the downcasted int152 from int256, reverting on
     * overflow (when the input is less than smallest int152 or
     * greater than largest int152).
     *
     * Counterpart to Solidity's `int152` operator.
     *
     * Requirements:
     *
     * - input must fit into 152 bits
     *
     * _Available since v4.7._
     */
    function toInt152(int256 value) internal pure returns (int152 downcasted) {
        downcasted = int152(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 152 bits");
    }

    /**
     * @dev Returns the downcasted int144 from int256, reverting on
     * overflow (when the input is less than smallest int144 or
     * greater than largest int144).
     *
     * Counterpart to Solidity's `int144` operator.
     *
     * Requirements:
     *
     * - input must fit into 144 bits
     *
     * _Available since v4.7._
     */
    function toInt144(int256 value) internal pure returns (int144 downcasted) {
        downcasted = int144(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 144 bits");
    }

    /**
     * @dev Returns the downcasted int136 from int256, reverting on
     * overflow (when the input is less than smallest int136 or
     * greater than largest int136).
     *
     * Counterpart to Solidity's `int136` operator.
     *
     * Requirements:
     *
     * - input must fit into 136 bits
     *
     * _Available since v4.7._
     */
    function toInt136(int256 value) internal pure returns (int136 downcasted) {
        downcasted = int136(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 136 bits");
    }

    /**
     * @dev Returns the downcasted int128 from int256, reverting on
     * overflow (when the input is less than smallest int128 or
     * greater than largest int128).
     *
     * Counterpart to Solidity's `int128` operator.
     *
     * Requirements:
     *
     * - input must fit into 128 bits
     *
     * _Available since v3.1._
     */
    function toInt128(int256 value) internal pure returns (int128 downcasted) {
        downcasted = int128(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 128 bits");
    }

    /**
     * @dev Returns the downcasted int120 from int256, reverting on
     * overflow (when the input is less than smallest int120 or
     * greater than largest int120).
     *
     * Counterpart to Solidity's `int120` operator.
     *
     * Requirements:
     *
     * - input must fit into 120 bits
     *
     * _Available since v4.7._
     */
    function toInt120(int256 value) internal pure returns (int120 downcasted) {
        downcasted = int120(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 120 bits");
    }

    /**
     * @dev Returns the downcasted int112 from int256, reverting on
     * overflow (when the input is less than smallest int112 or
     * greater than largest int112).
     *
     * Counterpart to Solidity's `int112` operator.
     *
     * Requirements:
     *
     * - input must fit into 112 bits
     *
     * _Available since v4.7._
     */
    function toInt112(int256 value) internal pure returns (int112 downcasted) {
        downcasted = int112(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 112 bits");
    }

    /**
     * @dev Returns the downcasted int104 from int256, reverting on
     * overflow (when the input is less than smallest int104 or
     * greater than largest int104).
     *
     * Counterpart to Solidity's `int104` operator.
     *
     * Requirements:
     *
     * - input must fit into 104 bits
     *
     * _Available since v4.7._
     */
    function toInt104(int256 value) internal pure returns (int104 downcasted) {
        downcasted = int104(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 104 bits");
    }

    /**
     * @dev Returns the downcasted int96 from int256, reverting on
     * overflow (when the input is less than smallest int96 or
     * greater than largest int96).
     *
     * Counterpart to Solidity's `int96` operator.
     *
     * Requirements:
     *
     * - input must fit into 96 bits
     *
     * _Available since v4.7._
     */
    function toInt96(int256 value) internal pure returns (int96 downcasted) {
        downcasted = int96(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 96 bits");
    }

    /**
     * @dev Returns the downcasted int88 from int256, reverting on
     * overflow (when the input is less than smallest int88 or
     * greater than largest int88).
     *
     * Counterpart to Solidity's `int88` operator.
     *
     * Requirements:
     *
     * - input must fit into 88 bits
     *
     * _Available since v4.7._
     */
    function toInt88(int256 value) internal pure returns (int88 downcasted) {
        downcasted = int88(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 88 bits");
    }

    /**
     * @dev Returns the downcasted int80 from int256, reverting on
     * overflow (when the input is less than smallest int80 or
     * greater than largest int80).
     *
     * Counterpart to Solidity's `int80` operator.
     *
     * Requirements:
     *
     * - input must fit into 80 bits
     *
     * _Available since v4.7._
     */
    function toInt80(int256 value) internal pure returns (int80 downcasted) {
        downcasted = int80(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 80 bits");
    }

    /**
     * @dev Returns the downcasted int72 from int256, reverting on
     * overflow (when the input is less than smallest int72 or
     * greater than largest int72).
     *
     * Counterpart to Solidity's `int72` operator.
     *
     * Requirements:
     *
     * - input must fit into 72 bits
     *
     * _Available since v4.7._
     */
    function toInt72(int256 value) internal pure returns (int72 downcasted) {
        downcasted = int72(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 72 bits");
    }

    /**
     * @dev Returns the downcasted int64 from int256, reverting on
     * overflow (when the input is less than smallest int64 or
     * greater than largest int64).
     *
     * Counterpart to Solidity's `int64` operator.
     *
     * Requirements:
     *
     * - input must fit into 64 bits
     *
     * _Available since v3.1._
     */
    function toInt64(int256 value) internal pure returns (int64 downcasted) {
        downcasted = int64(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 64 bits");
    }

    /**
     * @dev Returns the downcasted int56 from int256, reverting on
     * overflow (when the input is less than smallest int56 or
     * greater than largest int56).
     *
     * Counterpart to Solidity's `int56` operator.
     *
     * Requirements:
     *
     * - input must fit into 56 bits
     *
     * _Available since v4.7._
     */
    function toInt56(int256 value) internal pure returns (int56 downcasted) {
        downcasted = int56(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 56 bits");
    }

    /**
     * @dev Returns the downcasted int48 from int256, reverting on
     * overflow (when the input is less than smallest int48 or
     * greater than largest int48).
     *
     * Counterpart to Solidity's `int48` operator.
     *
     * Requirements:
     *
     * - input must fit into 48 bits
     *
     * _Available since v4.7._
     */
    function toInt48(int256 value) internal pure returns (int48 downcasted) {
        downcasted = int48(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 48 bits");
    }

    /**
     * @dev Returns the downcasted int40 from int256, reverting on
     * overflow (when the input is less than smallest int40 or
     * greater than largest int40).
     *
     * Counterpart to Solidity's `int40` operator.
     *
     * Requirements:
     *
     * - input must fit into 40 bits
     *
     * _Available since v4.7._
     */
    function toInt40(int256 value) internal pure returns (int40 downcasted) {
        downcasted = int40(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 40 bits");
    }

    /**
     * @dev Returns the downcasted int32 from int256, reverting on
     * overflow (when the input is less than smallest int32 or
     * greater than largest int32).
     *
     * Counterpart to Solidity's `int32` operator.
     *
     * Requirements:
     *
     * - input must fit into 32 bits
     *
     * _Available since v3.1._
     */
    function toInt32(int256 value) internal pure returns (int32 downcasted) {
        downcasted = int32(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 32 bits");
    }

    /**
     * @dev Returns the downcasted int24 from int256, reverting on
     * overflow (when the input is less than smallest int24 or
     * greater than largest int24).
     *
     * Counterpart to Solidity's `int24` operator.
     *
     * Requirements:
     *
     * - input must fit into 24 bits
     *
     * _Available since v4.7._
     */
    function toInt24(int256 value) internal pure returns (int24 downcasted) {
        downcasted = int24(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 24 bits");
    }

    /**
     * @dev Returns the downcasted int16 from int256, reverting on
     * overflow (when the input is less than smallest int16 or
     * greater than largest int16).
     *
     * Counterpart to Solidity's `int16` operator.
     *
     * Requirements:
     *
     * - input must fit into 16 bits
     *
     * _Available since v3.1._
     */
    function toInt16(int256 value) internal pure returns (int16 downcasted) {
        downcasted = int16(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 16 bits");
    }

    /**
     * @dev Returns the downcasted int8 from int256, reverting on
     * overflow (when the input is less than smallest int8 or
     * greater than largest int8).
     *
     * Counterpart to Solidity's `int8` operator.
     *
     * Requirements:
     *
     * - input must fit into 8 bits
     *
     * _Available since v3.1._
     */
    function toInt8(int256 value) internal pure returns (int8 downcasted) {
        downcasted = int8(value);
        require(downcasted == value, "SafeCast: value doesn't fit in 8 bits");
    }

    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     *
     * _Available since v3.0._
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
        require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
        return int256(value);
    }
}

File 14 of 29 : Constants.sol
// SPDX-License-Identifier: MIT LICENSE
pragma solidity ^0.8.9;

// Used for calculating decimal-point percentages (10000 = 100%)
uint256 constant PERCENTAGE_RANGE = 10000;

// Pauser Role - Can pause the game
bytes32 constant PAUSER_ROLE = keccak256("PAUSER_ROLE");

// Minter Role - Can mint items, NFTs, and ERC20 currency
bytes32 constant MINTER_ROLE = keccak256("MINTER_ROLE");

// Manager Role - Can manage the shop, loot tables, and other game data
bytes32 constant MANAGER_ROLE = keccak256("MANAGER_ROLE");

// Game Logic Contract - Contract that executes game logic and accesses other systems
bytes32 constant GAME_LOGIC_CONTRACT_ROLE = keccak256(
    "GAME_LOGIC_CONTRACT_ROLE"
);

// Game Currency Contract - Allowlisted currency ERC20 contract
bytes32 constant GAME_CURRENCY_CONTRACT_ROLE = keccak256(
    "GAME_CURRENCY_CONTRACT_ROLE"
);

// Game NFT Contract - Allowlisted game NFT ERC721 contract
bytes32 constant GAME_NFT_CONTRACT_ROLE = keccak256("GAME_NFT_CONTRACT_ROLE");

// Game Items Contract - Allowlist game items ERC1155 contract
bytes32 constant GAME_ITEMS_CONTRACT_ROLE = keccak256(
    "GAME_ITEMS_CONTRACT_ROLE"
);

// Depositor role - used by Polygon bridge to mint on child chain
bytes32 constant DEPOSITOR_ROLE = keccak256("DEPOSITOR_ROLE");

// Randomizer role - Used by the randomizer contract to callback
bytes32 constant RANDOMIZER_ROLE = keccak256("RANDOMIZER_ROLE");

// Trusted forwarder role - Used by meta transactions to verify trusted forwader(s)
bytes32 constant TRUSTED_FORWARDER_ROLE = keccak256("TRUSTED_FORWARDER_ROLE");

// =====
// All of the possible traits in the system
// =====

// Generation of a token
uint256 constant GENERATION_TRAIT_ID = uint256(keccak256("generation"));

// XP for a token
uint256 constant XP_TRAIT_ID = uint256(keccak256("xp"));

// Current level of a token
uint256 constant LEVEL_TRAIT_ID = uint256(keccak256("level"));

// Whether or not a token is a pirate
uint256 constant IS_PIRATE_TRAIT_ID = uint256(keccak256("is_pirate"));

// Rank of the ship
uint256 constant SHIP_RANK_TRAIT_ID = uint256(keccak256("ship_rank"));

// Image hash of token's image, used for verifiable / fair drops
uint256 constant IMAGE_HASH_TRAIT_ID = uint256(keccak256("image_hash"));

// Name of a token
uint256 constant NAME_TRAIT_ID = uint256(keccak256("name_trait"));

// Description of a token
uint256 constant DESCRIPTION_TRAIT_ID = uint256(keccak256("description_trait"));

// General rarity for a token (corresponds to IGameRarity)
uint256 constant RARITY_TRAIT_ID = uint256(keccak256("rarity"));

// The character's affinity for a specific element
uint256 constant ELEMENTAL_AFFINITY_TRAIT_ID = uint256(
    keccak256("elemental_affinity")
);

// The character's dice rolls
uint256 constant DICE_ROLL_1_TRAIT_ID = uint256(keccak256("dice_roll_1"));
uint256 constant DICE_ROLL_2_TRAIT_ID = uint256(keccak256("dice_roll_2"));

// The character's star sign (astrology)
uint256 constant STAR_SIGN_TRAIT_ID = uint256(keccak256("star_sign"));

// Image for the token
uint256 constant IMAGE_TRAIT_ID = uint256(keccak256("image_trait"));

// How much energy the token provides if used
uint256 constant ENERGY_PROVIDED_TRAIT_ID = uint256(
    keccak256("energy_provided")
);

// Whether a given token is soulbound, meaning it is unable to be transferred
uint256 constant SOULBOUND_TRAIT_ID = uint256(keccak256("soulbound"));

// ------
// Avatar Profile Picture related traits

// If an avatar is a 1 of 1, this is their only trait
uint256 constant PROFILE_IS_LEGENDARY_TRAIT_ID = uint256(
    keccak256("profile_is_legendary")
);

// Avatar's archetype -- possible values: Human (including Druid, Mage, Berserker, Crusty), Robot, Animal, Zombie, Vampire, Ghost
uint256 constant PROFILE_CHARACTER_TYPE = uint256(
    keccak256("profile_character_type")
);

// Avatar's profile picture's background image
uint256 constant PROFILE_BACKGROUND_TRAIT_ID = uint256(
    keccak256("profile_background")
);

// Avatar's eye style
uint256 constant PROFILE_EYES_TRAIT_ID = uint256(keccak256("profile_eyes"));

// Avatar's facial hair type
uint256 constant PROFILE_FACIAL_HAIR_TRAIT_ID = uint256(
    keccak256("profile_facial_hair")
);

// Avatar's hair style
uint256 constant PROFILE_HAIR_TRAIT_ID = uint256(keccak256("profile_hair"));

// Avatar's skin color
uint256 constant PROFILE_SKIN_TRAIT_ID = uint256(keccak256("profile_skin"));

// Avatar's coat color
uint256 constant PROFILE_COAT_TRAIT_ID = uint256(keccak256("profile_coat"));

// Avatar's earring(s) type
uint256 constant PROFILE_EARRING_TRAIT_ID = uint256(
    keccak256("profile_facial_hair")
);

// Avatar's eye covering
uint256 constant PROFILE_EYE_COVERING_TRAIT_ID = uint256(
    keccak256("profile_eye_covering")
);

// Avatar's headwear
uint256 constant PROFILE_HEADWEAR_TRAIT_ID = uint256(
    keccak256("profile_headwear")
);

// Avatar's (Mages only) gem color
uint256 constant PROFILE_MAGE_GEM_TRAIT_ID = uint256(
    keccak256("profile_mage_gem")
);

File 15 of 29 : GameRegistryConsumer.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/access/Ownable.sol";

import "@opengsn/contracts/src/interfaces/IERC2771Recipient.sol";

import {IGameRegistry} from "./interfaces/IGameRegistry.sol";
import {ISystem} from "./interfaces/ISystem.sol";

import {TRUSTED_FORWARDER_ROLE} from "./Constants.sol";

import {ITraitsProvider, ID as TRAITS_PROVIDER_ID} from "./interfaces/ITraitsProvider.sol";
import {ILockingSystem, ID as LOCKING_SYSTEM_ID} from "./locking/ILockingSystem.sol";
import {IRandomizer, IRandomizerCallback, ID as RANDOMIZER_ID} from "./randomizer/IRandomizer.sol";
import {ILootSystem, ID as LOOT_SYSTEM_ID} from "./loot/ILootSystem.sol";

/** @title Contract that lets a child contract access the GameRegistry contract */
abstract contract GameRegistryConsumer is
    ISystem,
    Ownable,
    IERC2771Recipient,
    IRandomizerCallback
{
    /// @notice Whether or not the contract is paused
    bool private _paused;

    /// @notice Id for the system/component
    uint256 private _id;

    /// @notice Read access contract
    IGameRegistry private _gameRegistry;

    /** EVENTS **/

    /// @dev Emitted when the pause is triggered by `account`.
    event Paused(address account);

    /// @dev Emitted when the pause is lifted by `account`.
    event Unpaused(address account);

    /** ERRORS **/

    /// @notice Not authorized to perform action
    error MissingRole(address account, bytes32 expectedRole);

    /** MODIFIERS **/

    // Modifier to verify a user has the appropriate role to call a given function
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /** ERRORS **/

    /// @notice gameRegistryAddress does not implement IGameRegistry
    error InvalidGameRegistry();

    /** SETUP **/

    /** Sets the GameRegistry contract address for this contract  */
    constructor(address gameRegistryAddress, uint256 id) {
        _gameRegistry = IGameRegistry(gameRegistryAddress);
        _id = id;

        if (gameRegistryAddress == address(0)) {
            revert InvalidGameRegistry();
        }

        _paused = true;
    }

    /** EXTERNAL **/

    /** @return ID for this system */
    function getId() public view override returns (uint256) {
        return _id;
    }

    /**
     * Pause/Unpause the contract
     *
     * @param shouldPause Whether or pause or unpause
     */
    function setPaused(bool shouldPause) external onlyOwner {
        if (shouldPause) {
            _pause();
        } else {
            _unpause();
        }
    }

    /**
     * @dev Returns true if the contract OR the GameRegistry is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused || _gameRegistry.paused();
    }

    /**
     * Sets the GameRegistry contract address for this contract
     *
     * @param gameRegistryAddress  Address for the GameRegistry contract
     */
    function setGameRegistry(address gameRegistryAddress) external onlyOwner {
        _gameRegistry = IGameRegistry(gameRegistryAddress);

        if (gameRegistryAddress == address(0)) {
            revert InvalidGameRegistry();
        }
    }

    /** @return GameRegistry contract for this contract */
    function getGameRegistry() external view returns (IGameRegistry) {
        return _gameRegistry;
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function _hasAccessRole(bytes32 role, address account)
        internal
        view
        returns (bool)
    {
        return _gameRegistry.hasAccessRole(role, account);
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view {
        if (!_gameRegistry.hasAccessRole(role, account)) {
            revert MissingRole(account, role);
        }
    }

    /** Returns the traits provider for this contract */
    function _traitsProvider() internal view returns (ITraitsProvider) {
        return ITraitsProvider(_getSystem(TRAITS_PROVIDER_ID));
    }

    /** @return Interface to the LockingSystem */
    function _lockingSystem() internal view returns (ILockingSystem) {
        return ILockingSystem(_gameRegistry.getSystem(LOCKING_SYSTEM_ID));
    }

    /** @return Interface to the LootSystem */
    function _lootSystem() internal view returns (ILootSystem) {
        return ILootSystem(_gameRegistry.getSystem(LOOT_SYSTEM_ID));
    }

    /** @return Interface to the Randomizer */
    function _randomizer() internal view returns (IRandomizer) {
        return IRandomizer(_gameRegistry.getSystem(RANDOMIZER_ID));
    }

    /** @return Address for a given system */
    function _getSystem(uint256 systemId) internal view returns (address) {
        return _gameRegistry.getSystem(systemId);
    }

    /**
     * Requests randomness from the game's Randomizer contract
     *
     * @param numWords Number of words to request from the VRF
     *
     * @return Id of the randomness request
     */
    function _requestRandomWords(uint32 numWords) internal returns (uint256) {
        return
            _randomizer().requestRandomWords(
                IRandomizerCallback(this),
                numWords
            );
    }

    /**
     * Callback for when a random number request has returned with random words
     *
     * @param requestId     Id of the request
     * @param randomWords   Random words
     */
    function fulfillRandomWordsCallback(
        uint256 requestId,
        uint256[] memory randomWords
    ) external virtual override {
        // Do nothing by default
    }

    /**
     * Returns the Player address for the Operator account
     * @param operatorAccount address of the Operator account to retrieve the player for
     */
    function _getPlayerAccount(address operatorAccount)
        internal
        view
        returns (address playerAccount)
    {
        return _gameRegistry.getPlayerAccount(operatorAccount);
    }

    /// @inheritdoc IERC2771Recipient
    function isTrustedForwarder(address forwarder)
        public
        view
        virtual
        override
        returns (bool)
    {
        return
            address(_gameRegistry) != address(0) &&
            _hasAccessRole(TRUSTED_FORWARDER_ROLE, forwarder);
    }

    /** INTERNAL **/

    /// @inheritdoc IERC2771Recipient
    function _msgSender()
        internal
        view
        virtual
        override(Context, IERC2771Recipient)
        returns (address ret)
    {
        if (msg.data.length >= 20 && isTrustedForwarder(msg.sender)) {
            assembly {
                ret := shr(96, calldataload(sub(calldatasize(), 20)))
            }
        } else {
            ret = msg.sender;
        }
    }

    /// @inheritdoc IERC2771Recipient
    function _msgData()
        internal
        view
        virtual
        override(Context, IERC2771Recipient)
        returns (bytes calldata ret)
    {
        if (msg.data.length >= 20 && isTrustedForwarder(msg.sender)) {
            return msg.data[0:msg.data.length - 20];
        } else {
            return msg.data;
        }
    }

    /** PAUSABLE **/

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual {
        require(_paused == false, "Pausable: not paused");
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual {
        require(_paused == true, "Pausable: not paused");
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

File 16 of 29 : TraitsConsumer.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/utils/math/SafeCast.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

import {GAME_LOGIC_CONTRACT_ROLE, NAME_TRAIT_ID, DESCRIPTION_TRAIT_ID, IMAGE_TRAIT_ID} from "./Constants.sol";

import {ITraitsConsumer} from "./interfaces/ITraitsConsumer.sol";
import {ITokenURIHandler} from "./tokens/ITokenURIHandler.sol";
import {GameRegistryConsumer} from "./GameRegistryConsumer.sol";

/** @title Contract that lets a child contract access the TraitsProvider contract */
abstract contract TraitsConsumer is
    ITraitsConsumer,
    GameRegistryConsumer,
    IERC165
{
    using Strings for uint256;

    /// @notice Override URI for the NFT contract. If not set, on-chain data is used instead
    string public _overrideURI;

    /// @notice Pointer to the handler for TokenURI calls
    address public tokenURIHandler;

    /// @notice Base URI for images, tokenId is appended to make final uri
    string public _baseImageURI;

    /// @notice Base URI for external link, tokenId is appended to make final uri
    string public _baseExternalURI;

    /// @notice Default image URI for the token
    /// @dev Should be set in the constructor
    string public _defaultImageURI;

    /// @notice Default description for the token
    string public _defaultDescription;

    /** ERRORS */

    /// @notice traitsProviderAddress does not implement ITraitsProvvider
    error InvalidTraitsProvider();

    /** SETUP **/

    /** Set game registry  */
    constructor(address _gameRegistryAddress, uint256 _id)
        GameRegistryConsumer(_gameRegistryAddress, _id)
    {}

    /** Sets the override URI for the tokens */
    function setURI(string calldata newURI) external onlyOwner {
        _overrideURI = newURI;
    }

    /** Sets base image URI for the tokens */
    function setBaseImageURI(string calldata newURI) external onlyOwner {
        _baseImageURI = newURI;
    }

    /** Sets base external URI for the tokens */
    function setBaseExternalURI(string calldata newURI) external onlyOwner {
        _baseExternalURI = newURI;
    }

    /** @return Token name for the given tokenId */
    function tokenName(uint256 tokenId)
        external
        view
        virtual
        override
        returns (string memory)
    {
        if (_hasTrait(tokenId, NAME_TRAIT_ID)) {
            // If token has a name trait set, use that
            return _getTraitString(tokenId, NAME_TRAIT_ID);
        } else {
            return string(abi.encodePacked("#", tokenId.toString()));
        }
    }

    /** @return Token name for the given tokenId */
    function tokenDescription(uint256 tokenId)
        external
        view
        virtual
        override
        returns (string memory)
    {
        if (_hasTrait(tokenId, DESCRIPTION_TRAIT_ID)) {
            // If token has a description trait set, use that
            return _getTraitString(tokenId, DESCRIPTION_TRAIT_ID);
        }

        return _defaultDescription;
    }

    /** @return Image URI for the given tokenId */
    function imageURI(uint256 tokenId)
        external
        view
        virtual
        override
        returns (string memory)
    {
        if (_hasTrait(tokenId, IMAGE_TRAIT_ID)) {
            // If token has a description trait set, use that
            return _getTraitString(tokenId, IMAGE_TRAIT_ID);
        }

        if (bytes(_baseImageURI).length > 0) {
            return string(abi.encodePacked(_baseImageURI, tokenId.toString()));
        }

        return _defaultImageURI;
    }

    /** @return External URI for the given tokenId */
    function externalURI(uint256 tokenId)
        external
        view
        virtual
        override
        returns (string memory)
    {
        if (bytes(_baseExternalURI).length > 0) {
            return
                string(abi.encodePacked(_baseExternalURI, tokenId.toString()));
        }

        return "";
    }

    /**
     * Sets the tokenURI handler for this token
     *
     * @param handler  Address of the handler contract to use
     */
    function setTokenURIHandler(address handler) external onlyOwner {
        tokenURIHandler = handler;
    }

    /** INTERNAL **/

    /**
     * @param tokenId Id of the token to get a trait value for
     * @param traitId Id of the trait to get the value for
     *
     * @return Trait int256 value for the given token and trait
     */
    function _getTraitInt256(uint256 tokenId, uint256 traitId)
        internal
        view
        returns (int256)
    {
        return
            _traitsProvider().getTraitInt256(address(this), tokenId, traitId);
    }

    /**
     * @param tokenId Id of the token to get a trait value for
     * @param traitId Id of the trait to get the value for
     *
     * @return Trait string value for the given token and trait
     */
    function _getTraitString(uint256 tokenId, uint256 traitId)
        internal
        view
        returns (string memory)
    {
        return
            _traitsProvider().getTraitString(address(this), tokenId, traitId);
    }

    /**
     * @param tokenId        NFT tokenId or ERC1155 token type id
     * @param traitId        Id of the trait to retrieve
     *
     * @return Whether or not the token has the trait
     */
    function _hasTrait(uint256 tokenId, uint256 traitId)
        internal
        view
        returns (bool)
    {
        return _traitsProvider().hasTrait(address(this), tokenId, traitId);
    }

    /**
     * Sets the int256 trait value for this token
     *
     * @param tokenId Id of the token to set trait for
     * @param traitId Id of the trait to set
     * @param value   New value of the trait
     */
    function _setTraitInt256(
        uint256 tokenId,
        uint256 traitId,
        int256 value
    ) internal {
        _traitsProvider().setTraitInt256(
            address(this),
            tokenId,
            traitId,
            value
        );
    }

    /**
     * Sets the string trait value for this token
     *
     * @param tokenId Id of the token to set trait for
     * @param traitId Id of the trait to set
     * @param value   New value of the trait
     */
    function _setTraitString(
        uint256 tokenId,
        uint256 traitId,
        string memory value
    ) internal {
        _traitsProvider().setTraitString(
            address(this),
            tokenId,
            traitId,
            value
        );
    }

    /**
     * @notice Generates metadata for the given tokenId
     * @param tokenId  Token to generate metadata for
     * @return A base64 encoded JSON metadata string
     */
    function _tokenURI(uint256 tokenId)
        internal
        view
        virtual
        returns (string memory)
    {
        // If override URI is set, return the URI with tokenId appended instead of on-chain data
        if (bytes(_overrideURI).length > 0) {
            return string(abi.encodePacked(_overrideURI, tokenId.toString()));
        }

        if (tokenURIHandler == address(0)) {
            return "";
        }

        return
            ITokenURIHandler(tokenURIHandler).tokenURI(
                _msgSender(),
                address(this),
                tokenId
            );
    }

    /**
     * @inheritdoc IERC165
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override
        returns (bool)
    {
        return
            interfaceId == type(ITraitsConsumer).interfaceId ||
            interfaceId == type(IERC165).interfaceId;
    }
}

File 17 of 29 : IGameRegistry.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

// @title Interface the game's ACL / Management Layer
interface IGameRegistry is IERC165 {
    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasAccessRole(bytes32 role, address account)
        external
        view
        returns (bool);

    /** @return Whether or not the registry is paused */
    function paused() external view returns (bool);

    /**
     * Registers a system by id
     *
     * @param systemId          Id of the system
     * @param systemAddress     Address of the system contract
     */
    function registerSystem(uint256 systemId, address systemAddress) external;

    /** @return System based on an id */
    function getSystem(uint256 systemId) external view returns (address);

    /** @return Authorized Player account for an address
     * @param operatorAddress   Address of the Operator account
     */
    function getPlayerAccount(address operatorAddress)
        external
        view
        returns (address);
}

File 18 of 29 : ISystem.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

/**
 * Defines a system the game engine
 */
interface ISystem {
    /** @return The ID for the system. Ex: a uint256 casted keccak256 hash */
    function getId() external view returns (uint256);
}

File 19 of 29 : ITraitsConsumer.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import {ITraitsProvider} from "./ITraitsProvider.sol";

/** @title Consumer of traits, exposes functions to get traits for this contract */
interface ITraitsConsumer {
    /** @return Token name for the given tokenId */
    function tokenName(uint256 tokenId) external view returns (string memory);

    /** @return Token name for the given tokenId */
    function tokenDescription(uint256 tokenId)
        external
        view
        returns (string memory);

    /** @return Image URI for the given tokenId */
    function imageURI(uint256 tokenId) external view returns (string memory);

    /** @return External URI for the given tokenId */
    function externalURI(uint256 tokenId) external view returns (string memory);
}

File 20 of 29 : ITraitsProvider.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

uint256 constant ID = uint256(keccak256("game.piratenation.traitsprovider"));

// Enum describing how the trait can be modified
enum TraitBehavior {
    NOT_INITIALIZED, // Trait has not been initialized
    UNRESTRICTED, // Trait can be changed unrestricted
    IMMUTABLE, // Trait can only be set once and then never changed
    INCREMENT_ONLY, // Trait can only be incremented
    DECREMENT_ONLY // Trait can only be decremented
}

// Type of data to allow in the trait
enum TraitDataType {
    NOT_INITIALIZED, // Trait has not been initialized
    INT, // int256 data type
    UINT, // uint128 data type
    BOOL, // bool data type
    STRING // string data type
}

// Holds metadata for a given trait type
struct TraitMetadata {
    // Name of the trait, used in tokenURIs
    string name;
    // How the trait can be modified
    TraitBehavior behavior;
    // Trait type
    TraitDataType dataType;
    // Whether or not the trait is a top-level property and should not be in the attribute array
    bool isTopLevelProperty;
}

// Used to pass traits around for URI generation
struct TokenURITrait {
    string name;
    bytes value;
    TraitDataType dataType;
    bool isTopLevelProperty;
}

/** @title Provides a set of traits to a set of ERC721/ERC1155 contracts */
interface ITraitsProvider is IERC165 {
    /**
     * Sets the raw abi-encoded value trait of a token, also checks to make sure trait can be modified
     * @dev It's not recommended to use this versus a typed function as those provide type safety checks
     *
     * @param tokenContract  Address of the token's contract
     * @param tokenId        NFT tokenId or ERC1155 token type id
     * @param traitId        Id of the trait to modify
     * @param value          New value for the given trait
     */
    function setTraitBytes(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId,
        bytes calldata value
    ) external;

    /**
     * Sets several raw byte traits for a given token
     * @dev It's not recommended to use this versus a typed function as those provide type safety checks
     *
     * @param tokenContract Address of the token's contract
     * @param tokenIds       Ids of the token to set traits for
     * @param traitIds       Ids of traits to set
     * @param values         Values of traits to set
     */
    function batchSetTraitBytes(
        address tokenContract,
        uint256[] calldata tokenIds,
        uint256[] calldata traitIds,
        bytes[] calldata values
    ) external;

    /**
     * Sets the value for the string trait of a token, also checks to make sure trait can be modified
     *
     * @param tokenContract  Address of the token's contract
     * @param tokenId        NFT tokenId or ERC1155 token type id
     * @param traitId        Id of the trait to modify
     * @param value          New value for the given trait
     */
    function setTraitString(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId,
        string calldata value
    ) external;

    /**
     * Sets several string traits for a given token
     *
     * @param tokenContract Address of the token's contract
     * @param tokenIds       Ids of the token to set traits for
     * @param traitIds       Ids of traits to set
     * @param values         Values of traits to set
     */
    function batchSetTraitString(
        address tokenContract,
        uint256[] calldata tokenIds,
        uint256[] calldata traitIds,
        string[] calldata values
    ) external;

    /**
     * Sets the value for the uint256 trait of a token, also checks to make sure trait can be modified
     *
     * @param tokenContract  Address of the token's contract
     * @param tokenId        NFT tokenId or ERC1155 token type id
     * @param traitId        Id of the trait to modify
     * @param value          New value for the given trait
     */
    function setTraitUint256(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId,
        uint256 value
    ) external;

    /**
     * Sets the value for the int256 trait of a token, also checks to make sure trait can be modified
     *
     * @param tokenContract  Address of the token's contract
     * @param tokenId        NFT tokenId or ERC1155 token type id
     * @param traitId        Id of the trait to modify
     * @param value          New value for the given trait
     */
    function setTraitInt256(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId,
        int256 value
    ) external;

    /**
     * Sets several int256 traits for a given token
     *
     * @param tokenContract Address of the token's contract
     * @param tokenIds       Ids of the token to set traits for
     * @param traitIds       Ids of traits to set
     * @param values         Values of traits to set
     */
    function batchSetTraitInt256(
        address tokenContract,
        uint256[] calldata tokenIds,
        uint256[] calldata traitIds,
        int256[] calldata values
    ) external;

    /**
     * Sets the value for the bool trait of a token, also checks to make sure trait can be modified
     *
     * @param tokenContract  Address of the token's contract
     * @param tokenId        NFT tokenId or ERC1155 token type id
     * @param traitId        Id of the trait to modify
     * @param value          New value for the given trait
     */
    function setTraitBool(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId,
        bool value
    ) external;

    /**
     * Increments the trait for a token by the given amount
     *
     * @param tokenContract  Address of the token's contract
     * @param tokenId        NFT tokenId or ERC1155 token type id
     * @param traitId        Id of the trait to modify
     * @param amount         Amount to increment trait by
     */
    function incrementTrait(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId,
        uint256 amount
    ) external;

    /**
     * Decrements the trait for a token by the given amount
     *
     * @param tokenContract  Address of the token's contract
     * @param tokenId        NFT tokenId or ERC1155 token type id
     * @param traitId        Id of the trait to modify
     * @param amount         Amount to decrement trait by
     */
    function decrementTrait(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId,
        uint256 amount
    ) external;

    /**
     * Returns the trait data for a given token
     *
     * @param tokenContract  Address of the token's contract
     * @param tokenId        NFT tokenId or ERC1155 token type id
     *
     * @return A struct containing all traits for the token
     */
    function getTraitIds(address tokenContract, uint256 tokenId)
        external
        view
        returns (uint256[] memory);

    /**
     * Retrieves a raw abi-encoded byte data for the given trait
     *
     * @param tokenContract   Token contract (ERC721 or ERC1155)
     * @param tokenId         Id of the NFT or token type
     * @param traitId         Id of the trait to retrieve
     *
     * @return The value of the trait if it exists, reverts if the trait has not been set or is of a different type.
     */
    function getTraitBytes(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId
    ) external view returns (bytes memory);

    /**
     * Retrieves a int256 trait for the given token
     *
     * @param tokenContract   Token contract (ERC721 or ERC1155)
     * @param tokenId         Id of the NFT or token type
     * @param traitId         Id of the trait to retrieve
     *
     * @return The value of the trait if it exists, reverts if the trait has not been set or is of a different type.
     */
    function getTraitInt256(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId
    ) external view returns (int256);

    /**
     * Retrieves a uint256 trait for the given token
     *
     * @param tokenContract   Token contract (ERC721 or ERC1155)
     * @param tokenId         Id of the NFT or token type
     * @param traitId         Id of the trait to retrieve
     *
     * @return The value of the trait if it exists, reverts if the trait has not been set or is of a different type.
     */
    function getTraitUint256(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId
    ) external view returns (uint256);

    /**
     * Retrieves a bool trait for the given token
     *
     * @param tokenContract   Token contract (ERC721 or ERC1155)
     * @param tokenId         Id of the NFT or token type
     * @param traitId         Id of the trait to retrieve
     *
     * @return The value of the trait if it exists, reverts if the trait has not been set or is of a different type.
     */
    function getTraitBool(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId
    ) external view returns (bool);

    /**
     * Retrieves a string trait for the given token
     *
     * @param tokenContract   Token contract (ERC721 or ERC1155)
     * @param tokenId         Id of the NFT or token type
     * @param traitId         Id of the trait to retrieve
     *
     * @return The value of the trait if it exists, reverts if the trait has not been set or is of a different type.
     */
    function getTraitString(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId
    ) external view returns (string memory);

    /**
     * Returns whether or not the given token has a trait
     *
     * @param tokenContract  Address of the token's contract
     * @param tokenId        NFT tokenId or ERC1155 token type id
     * @param traitId        Id of the trait to retrieve
     *
     * @return Whether or not the token has the trait
     */
    function hasTrait(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId
    ) external view returns (bool);

    /**
     * @param traitId  Id of the trait to get metadata for
     * @return Metadata for the given trait
     */
    function getTraitMetadata(uint256 traitId)
        external
        view
        returns (TraitMetadata memory);

    /**
     * Generate a tokenURI based on a set of global properties and traits
     *
     * @param tokenContract     Address of the token contract
     * @param tokenId           Id of the token to generate traits for
     *
     * @return base64-encoded fully-formed tokenURI
     */
    function generateTokenURI(
        address tokenContract,
        uint256 tokenId,
        TokenURITrait[] memory extraTraits
    ) external view returns (string memory);
}

File 21 of 29 : ILockingSystem.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

uint256 constant ID = uint256(keccak256("game.piratenation.lockingsystem"));

/// @title Interface for the LockingSystem that allows tokens to be locked by the game to prevent transfer
interface ILockingSystem is IERC165 {
    /**
     * Whether or not an NFT is locked
     *
     * @param tokenContract Token contract address
     * @param tokenId       Id of the token
     */
    function isNFTLocked(address tokenContract, uint256 tokenId)
        external
        view
        returns (bool);

    /**
     * Amount of token locked in the system by a given owner
     *
     * @param account   	  Token owner
     * @param tokenContract	Token contract address
     * @param tokenId       Id of the token
     *
     * @return Number of tokens locked
     */
    function itemAmountLocked(
        address account,
        address tokenContract,
        uint256 tokenId
    ) external view returns (uint256);

    /**
     * Amount of tokens available for unlock
     *
     * @param account       Token owner
     * @param tokenContract Token contract address
     * @param tokenId       Id of the token
     *
     * @return Number of tokens locked
     */
    function itemAmountUnlocked(
        address account,
        address tokenContract,
        uint256 tokenId
    ) external view returns (uint256);

    /**
     * Whether or not the given items can be transferred
     *
     * @param account   	    Token owner
     * @param tokenContract	    Token contract address
     * @param ids               Ids of the tokens
     * @param amounts           Amounts of the tokens
     *
     * @return Whether or not the given items can be transferred
     */
    function canTransferItems(
        address account,
        address tokenContract,
        uint256[] memory ids,
        uint256[] memory amounts
    ) external view returns (bool);

    /**
     * Lets the game add a reservation to a given NFT, this prevents the NFT from being unlocked
     *
     * @param tokenContract   Token contract address
     * @param tokenId         Token id to reserve
     * @param exclusive       Whether or not the reservation is exclusive. Exclusive reservations prevent other reservations from using the tokens by removing them from the pool.
     * @param data            Data determined by the reserver, can be used to identify the source of the reservation for display in UI
     */
    function addNFTReservation(
        address tokenContract,
        uint256 tokenId,
        bool exclusive,
        uint32 data
    ) external returns (uint32);

    /**
     * Lets the game remove a reservation from a given token
     *
     * @param tokenContract Token contract
     * @param tokenId       Id of the token
     * @param reservationId Id of the reservation to remove
     */
    function removeNFTReservation(
        address tokenContract,
        uint256 tokenId,
        uint32 reservationId
    ) external;

    /**
     * Lets the game add a reservation to a given token, this prevents the token from being unlocked
     *
     * @param account  			    Owner of the token to reserver
     * @param tokenContract   Token contract address
     * @param tokenId  				Token id to reserve
     * @param amount 					Number of tokens to reserve (1 for NFTs, >=1 for ERC1155)
     * @param exclusive				Whether or not the reservation is exclusive. Exclusive reservations prevent other reservations from using the tokens by removing them from the pool.
     * @param data            Data determined by the reserver, can be used to identify the source of the reservation for display in UI
     */
    function addItemReservation(
        address account,
        address tokenContract,
        uint256 tokenId,
        uint256 amount,
        bool exclusive,
        uint32 data
    ) external returns (uint32);

    /**
     * Lets the game remove a reservation from a given token
     *
     * @param account   			Owner to remove reservation from
     * @param tokenContract	Token contract
     * @param tokenId  			Id of the token
     * @param reservationId Id of the reservation to remove
     */
    function removeItemReservation(
        address account,
        address tokenContract,
        uint256 tokenId,
        uint32 reservationId
    ) external;
}

File 22 of 29 : ILootSystem.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

uint256 constant ID = uint256(keccak256("game.piratenation.lootsystem"));

/// @title Interface for the LootSystem that gives player loot (tokens, XP, etc) for playing the game
interface ILootSystem is IERC165 {
    // Type of loot
    enum LootType {
        UNDEFINED,
        ERC20,
        ERC721,
        ERC1155,
        LOOT_TABLE
    }

    // Individual loot to grant
    struct Loot {
        // Type of fulfillment (ERC721, ERC1155, ERC20, LOOT_TABLE)
        LootType lootType;
        // Contract to grant tokens from
        address tokenContract;
        // Id of the token to grant (ERC1155/LOOT TABLE types only)
        uint256 lootId;
        // Amount of token to grant (XP, ERC20, ERC1155)
        uint256 amount;
    }

    /**
     * Grants the given user loot(s), calls VRF to ensure it's truly random
     *
     * @param to          Address to grant loot to
     * @param loots       Loots to grant
     */
    function grantLoot(address to, Loot[] calldata loots) external;

    /**
     * Grants the given user loot(s), calls VRF to ensure it's truly random
     *
     * @param to          Address to grant loot to
     * @param loots       Loots to grant
     * @param randomWord  Optional random word to skip VRF callback if we already have words generated / are in a VRF callback
     */
    function grantLootWithRandomWord(
        address to,
        Loot[] calldata loots,
        uint256 randomWord
    ) external;

    /**
     * Validate that loots are properly formed. Reverts if the loots are not valid
     *
     * @param loots Loots to validate
     * @return needsVRF Whether or not the loots specified require VRF to generate
     */
    function validateLoots(Loot[] calldata loots)
        external
        view
        returns (bool needsVRF);
}

File 23 of 29 : GameItemsMock.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "../tokens/gameitems/GameItems.sol";

/** @title Game Items Mock for testing */
contract GameItemsMock is GameItems {
    bytes4 public ITRAITSCONSUMER_INTERFACEID =
        type(ITraitsConsumer).interfaceId;

    constructor(address gameRegistryAddress) GameItems(gameRegistryAddress) {}

    // Minting for test environemnts
    function mintForTests(uint32 tokenId, uint256 amount) external {
        _safeMint(_msgSender(), tokenId, amount);
    }
}

File 24 of 29 : IRandomizer.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

import {IRandomizerCallback} from "./IRandomizerCallback.sol";

uint256 constant ID = uint256(keccak256("game.piratenation.randomizer"));

interface IRandomizer is IERC165 {
    /**
     * Starts a VRF random number request
     *
     * @param callbackAddress Address to callback with the random numbers
     * @param numWords        Number of words to request from VRF
     *
     * @return requestId for the random number, will be passed to the callback contract
     */
    function requestRandomWords(
        IRandomizerCallback callbackAddress,
        uint32 numWords
    ) external returns (uint256);
}

File 25 of 29 : IRandomizerCallback.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

interface IRandomizerCallback {
    /**
     * Callback for when the Chainlink request returns
     *
     * @param requestId     Id of the random word request
     * @param randomWords   Random words that were generated by the VRF
     */
    function fulfillRandomWordsCallback(
        uint256 requestId,
        uint256[] memory randomWords
    ) external;
}

File 26 of 29 : IERC1155BeforeTokenTransferHandler.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

interface IERC1155BeforeTokenTransferHandler {
    /**
     * Before transfer hook for GameItems. Performs any trait checks needed before transfer
     *
     * @param tokenContract     Address of the token contract
     * @param operator          Operator address*
     * @param from              From address
     * @param to                To address
     * @param ids               Ids to transfer
     * @param amounts           Amounts to transfer
     * @param data              Additional data for transfer
     */
    function beforeTokenTransfer(
        address tokenContract,
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) external;
}

File 27 of 29 : ITokenURIHandler.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

interface ITokenURIHandler {
    /**
     * Generates the TokenURI for a given token
     *
     * @param operator          Sender requesting the tokenURI
     * @param tokenContract     TokenContract to get URI for
     * @param tokenId           Id of the token to get URI for
     *
     * @return TokenURI for the given token
     */
    function tokenURI(
        address operator,
        address tokenContract,
        uint256 tokenId
    ) external view returns (string memory);
}

File 28 of 29 : GameItems.sol
// SPDX-License-Identifier: MIT LICENSE
pragma solidity ^0.8.9;

import {MANAGER_ROLE, MINTER_ROLE, GAME_LOGIC_CONTRACT_ROLE} from "../../Constants.sol";
import {IGameItems, ID} from "./IGameItems.sol";

import "../../TraitsConsumer.sol";
import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";

import {IERC1155BeforeTokenTransferHandler} from "../IERC1155BeforeTokenTransferHandler.sol";

/** @title ERC1155 contract for Game Items */
contract GameItems is TraitsConsumer, IGameItems, ERC1155 {
    /** TYPES **/
    struct TypeInfo {
        bool recyclable;
        uint256 mints;
        uint256 burns;
        uint256 maxSupply;
    }

    /** MEMBERS **/

    /// @notice Supply info for each type
    mapping(uint256 => TypeInfo) private typeInfo;

    /// @notice Current contract metadata URI for this contract
    string private _contractURI;

    /// @notice Handler for before token transfer events
    address public beforeTokenTransferHandler;

    /** EVENTS **/

    /// @notice Emitted when contractURI has changed
    event ContractURIUpdated(string uri);

    /// @notice Everytime max supply is updated, this event is emitted. Can be used to track all items in the game
    event TypeUpdated(uint256 indexed id, uint256 maxSupply, bool recyclable);

    /** ERRORS **/

    /// @notice maxSupply needs to be higher than minted
    error MaxSupplyTooLow(uint256 needed, uint256 actual);

    /// @notice Token type has not been defined
    error InvalidTokenId();

    /// @notice Amount to mint exceeds max supply
    error NotEnoughSupply(uint256 needed, uint256 actual);

    /** SETUP **/

    constructor(address gameRegistryAddress)
        ERC1155("")
        TraitsConsumer(gameRegistryAddress, ID)
    {
        _defaultDescription = "Take to the seas with your pirate crew! Explore the world and gather XP, loot, and untold riches in a race to become the world's greatest pirate captain! Play at https://piratenation.game";
    }

    /** EXTERNAL **/

    /**
     * Sets the current contractURI for the contract
     *
     * @param _uri New contract URI
     */
    function setContractURI(string calldata _uri) public onlyOwner {
        _contractURI = _uri;
        emit ContractURIUpdated(_uri);
    }

    /**
     * @return Contract metadata URI for the NFT contract, used by NFT marketplaces to display collection inf
     */
    function contractURI() public view returns (string memory) {
        return _contractURI;
    }

    /**
     * Sets a mintable token type up
     *
     * @param id            Id of the token type to setup
     * @param maxSupply     Max Supply of the stoken
     * @param recyclable    Whether or not burns put tokens back into the pool to be minted again
     */
    function setType(
        uint256 id,
        uint256 maxSupply,
        bool recyclable
    ) external onlyRole(MANAGER_ROLE) {
        uint256 mints = typeInfo[id].mints;
        if (mints > maxSupply) {
            revert MaxSupplyTooLow(mints, maxSupply);
        }
        typeInfo[id].maxSupply = maxSupply;
        typeInfo[id].recyclable = recyclable;

        emit TypeUpdated(id, maxSupply, recyclable);
    }

    /**
     * Mints a ERC1155 token
     *
     * @param to        Recipient of the token
     * @param id        Id of token to mint
     * @param amount    Quantity of token to mint
     */
    function mint(
        address to,
        uint256 id,
        uint256 amount
    ) external override onlyRole(MINTER_ROLE) whenNotPaused {
        _safeMint(to, id, amount);
    }

    /**
     * Burn a token - any payment / game logic should be handled in the game contract.
     *
     * @param from      Account to burn from
     * @param id        Id of the token to burn
     * @param amount    Quantity to burn
     */
    function burn(
        address from,
        uint256 id,
        uint256 amount
    ) external override onlyRole(GAME_LOGIC_CONTRACT_ROLE) whenNotPaused {
        typeInfo[id].burns += amount;
        _burn(from, id, amount);
    }

    /**
     * @param id Id of the token type to get supply info for
     *
     * @return Returns the current supply information for the given type
     */
    function getInfoForType(uint256 id)
        external
        view
        returns (TypeInfo memory)
    {
        if (typeInfo[id].maxSupply == 0) {
            revert InvalidTokenId();
        }

        return typeInfo[id];
    }

    /** @return Token metadata URI for the given Id */
    function uri(uint256 id) public view override returns (string memory) {
        return _tokenURI(id);
    }

    /**
     * @param id  Id of the type to get data for
     *
     * @return How many of the given token id have been minted
     */
    function minted(uint256 id)
        external
        view
        virtual
        override(IGameItems)
        returns (uint256)
    {
        return typeInfo[id].mints;
    }

    /**
     * Sets the before token transfer handler
     *
     * @param handlerAddress  Address to the transfer hook handler contract
     */
    function setBeforeTokenTransferHandler(address handlerAddress)
        external
        onlyOwner
    {
        beforeTokenTransferHandler = handlerAddress;
    }

    /**
     * @inheritdoc IERC165
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(IERC165, TraitsConsumer, ERC1155)
        returns (bool)
    {
        return
            ERC165.supportsInterface(interfaceId) ||
            TraitsConsumer.supportsInterface(interfaceId) ||
            ERC1155.supportsInterface(interfaceId);
    }

    /*** INTERNAL ***/

    // Executes the mint with appropriate checks and locking
    function _safeMint(
        address to,
        uint256 id,
        uint256 amount
    ) internal {
        TypeInfo storage typeData = typeInfo[id];

        if (typeData.recyclable) {
            uint256 needed = typeData.mints - typeData.burns + amount;
            if (needed > typeData.maxSupply) {
                revert NotEnoughSupply(needed, typeData.maxSupply);
            }
        } else {
            uint256 needed = typeData.mints + amount;
            if (needed > typeData.maxSupply) {
                revert NotEnoughSupply(needed, typeData.maxSupply);
            }
        }

        typeData.mints += amount;
        _mint(to, id, amount, "");
    }

    /**
     * @notice Additional checks to prevent transfer of soulbound items, locked tokems, etc.
     */
    function _beforeTokenTransfer(
        address operator,
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual override {
        if (beforeTokenTransferHandler != address(0)) {
            IERC1155BeforeTokenTransferHandler handlerRef = IERC1155BeforeTokenTransferHandler(
                    beforeTokenTransferHandler
                );
            handlerRef.beforeTokenTransfer(
                address(this),
                operator,
                from,
                to,
                ids,
                amounts,
                data
            );
        }

        super._beforeTokenTransfer(operator, from, to, ids, amounts, data);
    }

    /**
     * Message sender override to get Context to work with meta transactions
     *
     */
    function _msgSender()
        internal
        view
        override(Context, GameRegistryConsumer)
        returns (address)
    {
        return GameRegistryConsumer._msgSender();
    }

    /**
     * Message data override to get Context to work with meta transactions
     *
     */
    function _msgData()
        internal
        view
        override(Context, GameRegistryConsumer)
        returns (bytes memory)
    {
        return GameRegistryConsumer._msgData();
    }
}

File 29 of 29 : IGameItems.sol
// SPDX-License-Identifier: MIT LICENSE

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";

uint256 constant ID = uint256(keccak256("game.piratenation.gameitems"));

interface IGameItems is IERC1155 {
    /**
     * Mints a ERC1155 token
     *
     * @param to        Recipient of the token
     * @param id        Id of token to mint
     * @param amount    Quantity of token to mint
     */
    function mint(
        address to,
        uint256 id,
        uint256 amount
    ) external;

    /**
     * Burn a token - any payment / game logic should be handled in the game contract.
     *
     * @param from      Account to burn from
     * @param id        Id of the token to burn
     * @param amount    Quantity to burn
     */
    function burn(
        address from,
        uint256 id,
        uint256 amount
    ) external;

    /**
     * @param id  Id of the type to get data for
     *
     * @return How many of the given token id have been minted
     */
    function minted(uint256 id) external view returns (uint256);
}

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

Contract ABI

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000bf00df7d2d3a693e836db479c1d27a69f5b53d9f

-----Decoded View---------------
Arg [0] : gameRegistryAddress (address): 0xBF00dF7d2d3a693e836dB479c1D27A69f5B53D9f

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000bf00df7d2d3a693e836db479c1d27a69f5b53d9f


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