// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol


// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;


/**
 * @dev Interface for the optional metadata functions from the ERC-20 standard.
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// File: @openzeppelin/contracts/utils/Context.sol


// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// File: @openzeppelin/contracts/interfaces/draft-IERC6093.sol


// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC-20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC-721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC-1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

// File: @openzeppelin/contracts/token/ERC20/ERC20.sol


// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;





/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC-20
 * applications.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

    mapping(address account => mapping(address spender => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Skips emitting an {Approval} event indicating an allowance update. This is not
     * required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve].
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     *
     * ```solidity
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;


/**
 * @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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @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 {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _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: rocketV7.sol


pragma solidity ^0.8.20;



contract ROCKET is ERC20, Ownable {

        //         *          *     .--.
        //                         / /  `
        //        (0)             | |
        //               '         \ \__,
        //           *          +   '--'  *
        //               +   /\
        //  +              .'  '.   *
        //         *      /======\  
        //               | ROCKET |   +
        //               ;:.  _   ;
        //               |:. (_)  |
        //               |:.  _   |     
        //     +         |:. (_)  |          *
        //               ;:.      ;
        //             .' \:.    / `.
        //            / .-'':._.'`-. \
        //            |/    /||\    \|
        //          _..--"""````"""--.._
        //    _.-'``                    ``'-._
        //  -'                                '-

    // TRANSFER DATA STORAGE
    mapping(address => uint256) private lastTransferTimestamp; // Tracks the timestamp of the last transfer by wallet.
    mapping(address => uint256) private lastTransferPeriodStartTimestamp; // Tracks the last transfer period start timestamp.
    mapping(address => uint256) private transferredAmountInPeriod; // Tracks the transferred amount within the current period for each address.
    mapping(address => uint256) private maxTransferAmountInPeriod; // Tracks the maximum transfer amount allowed in the current period for each address.
    address public lastAccountToTransfer; // Tracks the last account to transfer ROCKET (excludes sudo accounts).

    // INVITE CODE STORAGE
    mapping(address => address[2]) public inviteCodeByUser; // Each account can have up to two invite codes.
    mapping(address => uint256) public activeMembersByInviteCode; // Tracks the number of members for each invite code.
    mapping(address => uint256) public lastInviteCodeChangeTimestamp; // Tracks the last time the invite code was changed for each address.

    // INITIAL ENGINE PARAMETERS
    uint256 public immutable liftoffTimestamp;
    bool public enginePower; // Engine power status. *
    uint256 public transferLimitPercentage = 100; // Percentage of balance that can be transferred. Out of 10000 for precision.
    uint256 public transferFeePercentage = 0; // Percentage fee applied to each non-Operator transfer.
    uint256 public operatorBalanceRequirement = 500000000000000; // Initial ROCKET required to be an OPERATOR.
    address public defaultDappAddress; // Default address for fee distribution.
    address public liquidityPoolAddress; // Liquidity pool is exempt from limits and fees.

    // -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_-
    // STONE TABLET OF ENGINE PARAMETERS LIMITS
    // -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_-
    uint256 public transferLimitTimePeriod = 86400; // How often the transfer limit can be reset for each address.
    uint256 public constant MIN_TRANSFER_LIMIT_PERCENTAGE = 100; // Minimum percentage: 1%
    uint256 public constant MAX_TRANSFER_LIMIT_PERCENTAGE = 500; // Maximum percentage: 5%
    uint256 public constant MIN_TRANSFER_FEE_PERCENTAGE = 0; // Minimum fee: 0%
    uint256 public constant MAX_TRANSFER_FEE_PERCENTAGE = 500; // Maximum fee: 5%
    uint256 public constant MIN_OPERATOR_BALANCE_REQUIREMENT = 50000000000000; // Minimum requirement to become an OPERATOR: 0.00005 ROCKET
    uint256 public constant MAX_OPERATOR_BALANCE_REQUIREMENT = 500000000000000; // Maximum requirement to become an OPERATOR: 0.0005 ROCKET
    uint256 public inviteCodeCooldownPeriod = 43200; // Time before a user can change their invite code again.
    // - -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- -**- *-

constructor(
        string memory name, 
        string memory symbol, 
        uint256 _liftoffTimestamp, 
        address deployer
    ) ERC20(name, symbol) Ownable(deployer) {
        _mint(deployer, 1e18); // Mint the total supply of 1 ROCKET (18 decimals)
        liftoffTimestamp = _liftoffTimestamp;
    }


    /**
     * @dev Allows OPERATORS to update ENGINE PARAMETERS with enforced min and max values.
     */
    function updateEngineParameters(
        uint256 _transferLimitPercentage,
        uint256 _transferFeePercentage,
        uint256 _operatorBalanceRequirement
    ) external onlyOwner {
       
        require(
            _transferLimitPercentage >= MIN_TRANSFER_LIMIT_PERCENTAGE &&
            _transferLimitPercentage <= MAX_TRANSFER_LIMIT_PERCENTAGE,
            "transferLimitPercentage out of bounds"
        );
        require(
            // The minimum transfer fee percentage is 0.
            _transferFeePercentage <= MAX_TRANSFER_FEE_PERCENTAGE,
            "transferFeePercentage out of bounds"
        );
        require(
            _operatorBalanceRequirement >= MIN_OPERATOR_BALANCE_REQUIREMENT &&
            _operatorBalanceRequirement <= MAX_OPERATOR_BALANCE_REQUIREMENT,
            "operatorBalanceRequirement out of bounds"
        );

        transferLimitPercentage = _transferLimitPercentage;
        transferFeePercentage = _transferFeePercentage;
        operatorBalanceRequirement = _operatorBalanceRequirement;
    }

    /**
     * @dev Allows a user to set their invite code.
     * @param _inviteCode An array containing the primary and secondary invite code addresses.
     */
    function setInviteCode(address[2] memory _inviteCode) external {
        require(
            block.timestamp >= lastInviteCodeChangeTimestamp[msg.sender] + inviteCodeCooldownPeriod,
            "Invite code cooldown period not yet over"
        );

        require(isOperator(_inviteCode[0]), "Primary invite code must be an Operator.");
        require(_inviteCode[0] != liquidityPoolAddress  && _inviteCode[1] != liquidityPoolAddress, "Liquidity pool cannot be an invite code.");
        address oldInviteCode = inviteCodeByUser[msg.sender][0];

        // Decrease active members count for the old invite code if it's not address zero
        if (oldInviteCode != address(0)) {
            activeMembersByInviteCode[oldInviteCode]--;
        }

        inviteCodeByUser[msg.sender] = _inviteCode;
        activeMembersByInviteCode[_inviteCode[0]]++;
        lastInviteCodeChangeTimestamp[msg.sender] = block.timestamp;
    }

    /**
     * @dev Allows OPERATORS to set the liquidity pool address.
     */
    function setLiquidityPoolAddress(address _liquidityPoolAddress) external onlyOwner {
        require(_liquidityPoolAddress != address(0), "Invalid address");
        liquidityPoolAddress = _liquidityPoolAddress;
    }

    /**
     * @dev Allows OPERATORS to set the default dapp address.
     */
    function setDefaultDappAddress(address _defaultDappAddress) external onlyOwner {
        require(_defaultDappAddress != address(0), "Invalid address");
        defaultDappAddress = _defaultDappAddress;
    }
 /**
     * @dev Allows the deployer to power on the engine. Once on, it cannot be turned off.
     */
    function powerEngine() external onlyOwner {
        enginePower = true;
    }

    /**
     * @dev Overrides the ERC20 _transfer function to implement the ROCKET ENGINE.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual override {
        // Exclude minting, burning, and transfers involving the liquidity pool.
        if (enginePower && from != address(0) && to != address(0) && from != liquidityPoolAddress) {
            require(block.timestamp >= liftoffTimestamp, "ROCKET is still on the launchpad");
            
            uint256 senderBalance = balanceOf(from);
            require(senderBalance >= 10000, "Minimum balance of 10000 wei required");

            // Check and reset the transfer limit period if necessary.
            if (block.timestamp > lastTransferPeriodStartTimestamp[from] + transferLimitTimePeriod) {
                uint256 maxTransferAmount = (senderBalance * transferLimitPercentage) / 10000;
                lastTransferPeriodStartTimestamp[from] = block.timestamp;
                transferredAmountInPeriod[from] = 0;
                maxTransferAmountInPeriod[from] = maxTransferAmount;
            }

            // Ensure the transfer does not exceed the max transfer amount.
            require(
                transferredAmountInPeriod[from] + amount <= maxTransferAmountInPeriod[from],
                "Transfer limit exceeded"
            );
            transferredAmountInPeriod[from] += amount;

            // Check if the sender is NOT an OPERATOR to enforce fees.
            if (!isOperator(from) && transferFeePercentage > 0) {
                
                require(amount > 10000 || amount == 0, "Transfer amount must be greater than 10000 or 0.");

                // Calculate the transfer fee.
                uint256 fee = (amount * transferFeePercentage) / 10000;
                uint256 amountAfterFee = amount - fee;

                // Determine fee recipients based on invite codes.
                address feeRecipient1 = inviteCodeByUser[from][0];
                address feeRecipient2 = inviteCodeByUser[from][1];
                uint256 feeSplit;

                if (feeRecipient1 != address(0) && feeRecipient2 != address(0)) {
                    // Split the fee between both invite codes.
                    feeSplit = fee / 2;
                    super._transfer(from, feeRecipient1, feeSplit);
                    super._transfer(from, feeRecipient2, fee - feeSplit); // Handle odd fee values.
                } else if (feeRecipient1 != address(0)) {
                    // Send the entire fee to the primary invite code.
                    super._transfer(from, feeRecipient1, fee);
                } else {
                    // Send the fee to the default DApp address.
                    super._transfer(from, defaultDappAddress, fee);
                }

                // Transfer the remaining amount to the recipient.
                lastTransferTimestamp[from] = block.timestamp;
                super._transfer(from, to, amountAfterFee);
                lastAccountToTransfer = from;
                return;
            }

            // If sender is an OPERATOR or transferFeePercentage is 0, transfer without fee.
            lastTransferTimestamp[from] = block.timestamp;
            super._transfer(from, to, amount);
            lastAccountToTransfer = from;
            return;
        } else {

            // Perform a standard transfer for other cases.
            super._transfer(from, to, amount);

            if (enginePower && block.timestamp < liftoffTimestamp + 86400) {
                require(balanceOf(to) <= 30000000000000000);
            }
            return;
        }
    }

    /**
     * @dev Checks if an address is an OPERATOR.
     * @param _address The address to check.
     * @return True if the address is an OPERATOR, false otherwise.
     */
    function isOperator(address _address) public view returns (bool) {
        if (_address == address(0)) {
            return false;
        }
        return balanceOf(_address) >= operatorBalanceRequirement;
    }

    /**
     * @dev Fetches the remaining transferable amount for a user within the current period.
     * @param user The address of the user.
     * @return The remaining transferable amount.
     */
    function fetchRemainingTransferAmount(address user) external view returns (uint256) {
        uint256 senderBalance = balanceOf(user);
        if (block.timestamp > lastTransferPeriodStartTimestamp[user] + transferLimitTimePeriod) {
            return (senderBalance * transferLimitPercentage) / 10000;
        }
        return maxTransferAmountInPeriod[user] - transferredAmountInPeriod[user];
    }
}

{
  "compilationTarget": {
    "ROCKET.sol": "ROCKET"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}