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0x3B4cdb27641bc76214a0cB6cae3560a468D9aD4A

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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xad6Bd6a4...719b1E361
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
GameItems

Compiler Version
v0.8.13+commit.abaa5c0e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 28 : 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);
    }

    /**
     * @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
    ) external onlyRole(MINTER_ROLE) whenNotPaused {
        _mintBatch(to, ids, amounts, data);
    }

    function mintBatch(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts
    ) external onlyRole(MINTER_ROLE) whenNotPaused {
        _mintBatch(to, ids, amounts, "");
    }

    /**
     * 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);
    }

    /**
     * @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
    ) external onlyRole(GAME_LOGIC_CONTRACT_ROLE) whenNotPaused {
        _burnBatch(from, ids, amounts);
    }

    /**
     * @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 2 of 28 : 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 3 of 28 : 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 4 of 28 : 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 5 of 28 : 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 6 of 28 : 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 7 of 28 : 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 8 of 28 : 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 9 of 28 : 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 10 of 28 : 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 28 : 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 28 : 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 28 : 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 28 : 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 15 of 28 : 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
// =====

/// @dev Trait that points to another token/template id
uint256 constant TEMPLATE_ID_TRAIT_ID = uint256(keccak256("template_id"));

// 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"));

// Whether or not a token is a ship
uint256 constant IS_SHIP_TRAIT_ID = uint256(keccak256("is_ship"));

// Whether or not an item is equippable on ships
uint256 constant EQUIPMENT_TYPE_TRAIT_ID = uint256(keccak256("equipment_type"));

// Item slots
uint256 constant ITEM_SLOTS_TRAIT_ID = uint256(keccak256("item_slots"));

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

// Current Health trait
uint256 constant CURRENT_HEALTH_TRAIT_ID = uint256(keccak256("current_health"));

// Health trait
uint256 constant HEALTH_TRAIT_ID = uint256(keccak256("health"));

// Damage trait
uint256 constant DAMAGE_TRAIT_ID = uint256(keccak256("damage"));

// Speed trait
uint256 constant SPEED_TRAIT_ID = uint256(keccak256("speed"));

// Accuracy trait
uint256 constant ACCURACY_TRAIT_ID = uint256(keccak256("accuracy"));

// Evasion trait
uint256 constant EVASION_TRAIT_ID = uint256(keccak256("evasion"));

// 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("affinity_id")
);

// Boss start time trait
uint256 constant BOSS_START_TIME_TRAIT_ID = uint256(
    keccak256("boss_start_time")
);

// Boss end time trait
uint256 constant BOSS_END_TIME_TRAIT_ID = uint256(keccak256("boss_end_time"));

// Boss type trait
uint256 constant BOSS_TYPE_TRAIT_ID = uint256(keccak256("boss_type"));

// 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 16 of 28 : 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) virtual 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 17 of 28 : 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 28 : 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 28 : 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 28 : 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, // uint256 data type
    BOOL, // bool data type
    STRING, // string data type
    INT_ARRAY, // int256 array data type
    UINT_ARRAY // uint256 array 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;
    // Whether or not the trait should be hidden from end-users
    bool hidden;
}

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

/** @title Provides a set of traits to a set of ERC721/ERC1155 contracts */
interface ITraitsProvider is IERC165 {
    /**
     * 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 several uint256 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 batchSetTraitUint256(
        address tokenContract,
        uint256[] calldata tokenIds,
        uint256[] calldata traitIds,
        uint256[] calldata values
    ) 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 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 setTraitInt256Array(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId,
        int256[] calldata value
    ) 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 setTraitUint256Array(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId,
        uint256[] calldata value
    ) 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;

    /**
     * Sets several bool 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 batchSetTraitBool(
        address tokenContract,
        uint256[] calldata tokenIds,
        uint256[] calldata traitIds,
        bool[] calldata values
    ) 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 int256 array 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 getTraitInt256Array(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId
    ) external view returns (int256[] memory);

    /**
     * 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 uint256 array 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 getTraitUint256Array(
        address tokenContract,
        uint256 tokenId,
        uint256 traitId
    ) external view returns (uint256[] memory);

    /**
     * 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 28 : 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 28 : 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,
        CALLBACK
    }

    // 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/CALLBACK 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;

    /**
     * Grants the given user loot(s) in batches. Presumes no randomness or loot tables
     *
     * @param to          Address to grant loot to
     * @param loots       Loots to grant
     * @param amount      Amount of each loot to grant
     */
    function batchGrantLootWithoutRandomness(
        address to,
        Loot[] calldata loots,
        uint8 amount
    ) 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 28 : 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 24 of 28 : 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 25 of 28 : 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);
}

File 26 of 28 : 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 28 : 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 28 : 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;
    }
}

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

Contract Security Audit

Contract ABI

API
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"uint256[]","name":"amounts","type":"uint256[]"}],"name":"burnBatch","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"contractURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"externalURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"requestId","type":"uint256"},{"internalType":"uint256[]","name":"randomWords","type":"uint256[]"}],"name":"fulfillRandomWordsCallback","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getGameRegistry","outputs":[{"internalType":"contract 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uint256","name":"tokenId","type":"uint256"}],"name":"tokenDescription","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenName","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenURIHandler","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"uri","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"}]

Deployed Bytecode

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.