Mumbai Testnet

Contract

0xF7255692417801B8979ccaF34B411aF58c7708e5

Overview

MATIC Balance

Polygon PoS Chain LogoPolygon PoS Chain LogoPolygon PoS Chain Logo0 MATIC

Token Holdings

Multichain Info

N/A
Transaction Hash
Method
Block
From
To
Value
Buy270370622022-07-05 8:46:04633 days ago1657010764IN
0xF7255692...58c7708e5
0 MATIC0.0039086130.78162436
Withdraw270369382022-07-05 8:35:42633 days ago1657010142IN
0xF7255692...58c7708e5
0 MATIC0.00006072.50000001
Withdraw270369382022-07-05 8:35:42633 days ago1657010142IN
0xF7255692...58c7708e5
0 MATIC0.00006072.50000001
Withdraw270369382022-07-05 8:35:42633 days ago1657010142IN
0xF7255692...58c7708e5
0 MATIC0.000168722.50000001
Buy270362242022-07-05 7:20:01633 days ago1657005601IN
0xF7255692...58c7708e5
0 MATIC0.0032857129.90626831
Buy270272692022-07-04 9:52:17633 days ago1656928337IN
0xF7255692...58c7708e5
0 MATIC0.000274692.50000001
Buy269875662022-07-01 14:06:31636 days ago1656684391IN
0xF7255692...58c7708e5
0 MATIC0.0047299241.03734543
Withdraw269865442022-07-01 12:35:45636 days ago1656678945IN
0xF7255692...58c7708e5
0 MATIC0.0022183930.82471549
Withdraw269706282022-06-30 12:32:14637 days ago1656592334IN
0xF7255692...58c7708e5
0 MATIC0.000179922.50000001
Buy269700492022-06-30 11:33:10637 days ago1656588790IN
0xF7255692...58c7708e5
0 MATIC0.000317442.5
Buy269699232022-06-30 11:17:18637 days ago1656587838IN
0xF7255692...58c7708e5
0 MATIC0.000317412.50000001
Buy269584172022-06-29 13:33:45638 days ago1656509625IN
0xF7255692...58c7708e5
0 MATIC0.00017312.42500002
Withdraw269572232022-06-29 11:09:16638 days ago1656500956IN
0xF7255692...58c7708e5
0 MATIC0.000202942.50000002
Buy269431982022-06-28 11:54:50639 days ago1656417290IN
0xF7255692...58c7708e5
0 MATIC0.000274692.50000223
Buy269429232022-06-28 11:27:31639 days ago1656415651IN
0xF7255692...58c7708e5
0 MATIC0.000322342.50000003
Buy269429052022-06-28 11:25:00639 days ago1656415500IN
0xF7255692...58c7708e5
0 MATIC0.000274662.50000001
Buy269428652022-06-28 11:21:40639 days ago1656415300IN
0xF7255692...58c7708e5
0 MATIC0.000317412.50000001
Withdraw269426492022-06-28 11:03:36639 days ago1656414216IN
0xF7255692...58c7708e5
0 MATIC0.000168722.5000006
Buy269328482022-06-27 16:54:28640 days ago1656348868IN
0xF7255692...58c7708e5
0 MATIC0.000322322.5
Buy269323412022-06-27 15:55:15640 days ago1656345315IN
0xF7255692...58c7708e5
0 MATIC0.000274662.50000001
Buy269323292022-06-27 15:53:15640 days ago1656345195IN
0xF7255692...58c7708e5
0 MATIC0.000274662.50000001
Withdraw269171652022-06-26 14:36:48641 days ago1656254208IN
0xF7255692...58c7708e5
0 MATIC0.000179942.5
Withdraw269135892022-06-26 8:44:32642 days ago1656233072IN
0xF7255692...58c7708e5
0 MATIC0.000214122.5
Withdraw269135102022-06-26 8:35:51642 days ago1656232551IN
0xF7255692...58c7708e5
0 MATIC0.000168722.50000001
Withdraw269126342022-06-26 7:08:42642 days ago1656227322IN
0xF7255692...58c7708e5
0 MATIC0.0033637446.73941425
View all transactions

Parent Txn Hash Block From To Value
View All Internal Transactions
Loading...
Loading

Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x6AF886B9...688e96ca4
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
DragonMarket

Compiler Version
v0.8.0+commit.c7dfd78e

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 26 : DragonMarket.sol
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "./BaseAuctionReceiver.sol";
import "./DragonToken.sol";

contract DragonMarket is BaseAuctionReceiver, ReentrancyGuard {
    
    using SafeMath for uint;
    using Address for address;

    uint constant WEI_MIN_PRICE = 1e15; //0,001 eth 
    uint constant HOURS_MAX_PERIOD = 24 * 100; //100 days

    event TokenBought(
        uint tokenId, 
        uint weiAmount, 
        address indexed newOwner,
        uint weiHolderAmount, 
        uint weiFeesAmount, 
        address indexed oldOwner);

    constructor(address accessControl, address dragonToken, address coinContract, uint fees100) 
    BaseAuctionReceiver(accessControl, dragonToken, coinContract, fees100) {
    }

    function weiMinPrice() internal override virtual pure returns (uint) {
        return WEI_MIN_PRICE;
    }

    function maxTotalPeriod() internal override virtual pure returns (uint) {
        return HOURS_MAX_PERIOD;
    }

    function numOfPriceChangesPerHour() internal override virtual pure returns (uint) {
        return 30;
    }

    function buy(uint tokenId, uint amount) 
    external 
    nonReentrant 
    whenNotPaused
    whenLocked(tokenId) {
        require(amount >= priceOf(tokenId), 
            "DragonMarket: incorrect amount sent to the contract");
        require(holderOf(tokenId) != _msgSender(), 
            "DragonMarket: a token holder cannot buy own token. Use the method withdraw instead.");
        
        address holder = holderOf(tokenId);

        IERC20 coin = IERC20(coinContract());
        coin.transferFrom(_msgSender(), address(this), amount);

        _unlock(tokenId);
        delete _priceSettings[tokenId];

        DragonToken(tokenContract())
            .safeTransferFrom(address(this), msg.sender, tokenId);

        uint weiFeesAmount = calcFees(amount, feesPercent());
        uint weiHolderAmount = amount.sub(weiFeesAmount);
        
        coin.transfer(holder, weiHolderAmount);

        emit TokenBought(
            tokenId, amount, msg.sender, 
            weiHolderAmount, weiFeesAmount, holder);
    }
}

File 2 of 26 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

File 3 of 26 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

    /**
     * @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);
}

File 4 of 26 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

File 5 of 26 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

File 6 of 26 : BaseAuctionReceiver.sol
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/utils/math/Math.sol";
import "./utils/BytesLib.sol";
import "./LockableReceiver.sol";

abstract contract BaseAuctionReceiver is LockableReceiver {
    
    enum PriceDirection { NONE, UP, DOWN }

    struct PriceSettings { 
        uint startingPrice;
        uint finalPrice;
        uint priceChangePeriod; //in hours
        uint priceChangeStep; 
        PriceDirection direction;
        uint timestampAddedAt; 
    }

    using SafeMath for uint;

    mapping(uint => PriceSettings) internal _priceSettings;
    uint private _numOfPriceChangesPerHour;
    uint private _fees100;

    constructor (address accessControl, address dragonToken, address coinContract, uint fees100) 
    LockableReceiver(accessControl, dragonToken, coinContract) {
        _fees100 = fees100;
        _numOfPriceChangesPerHour = 60;
    }

    function weiMinPrice() internal virtual pure returns (uint) {
        return 0;
    }

    function maxTotalPeriod() internal virtual pure returns (uint) {
        return 0;
    }

    function setNumOfPriceChangesPerHour(uint newValue) external virtual onlyRole(CFO_ROLE) {
        _numOfPriceChangesPerHour = newValue;
    }

    /**
    * Defines how often the price is changed during 1 hour. 60 by default (every minute).
    */
    function numOfPriceChangesPerHour() internal virtual view returns (uint) {
        return _numOfPriceChangesPerHour;
    }

    function feesPercent() public virtual view returns (uint) {
        return _fees100;
    }

    function setFeesPercent(uint newValue) external virtual onlyRole(CFO_ROLE) {
        _fees100 = newValue;
    }

    function calcFees(uint weiAmount, uint fees100) internal virtual pure returns (uint) {
        return weiAmount.div(1e4).mul(fees100);
    }

    function readPriceSettings(bytes calldata data) internal virtual pure returns (uint, uint, uint) {
        uint weiStartingPrice = BytesLib.toUint256(data, 0);
        uint weiFinalPrice = BytesLib.toUint256(data, 0x20);
        uint totalPriceChangePeriod = BytesLib.toUint256(data, 0x40);
        return (weiStartingPrice, weiFinalPrice, totalPriceChangePeriod);
    } 

    function processERC721(address /*from*/, uint tokenId, bytes calldata data) 
        internal virtual override {

        (uint weiStartingPrice, uint weiFinalPrice, uint totalPriceChangePeriod) = 
            readPriceSettings(data);

        uint _weiMinPrice = weiMinPrice();
        uint _maxTotalPeriod = maxTotalPeriod();

        if (_weiMinPrice > 0) {
            require(weiStartingPrice >= _weiMinPrice && weiFinalPrice >= _weiMinPrice, 
                "BCA: either start or final price is too small");
        }
        if (_maxTotalPeriod > 0) {
            require(totalPriceChangePeriod <= _maxTotalPeriod, 
                "BCA: the price change period is too big");
            require(totalPriceChangePeriod >= 12 && totalPriceChangePeriod.mod(12) == 0, 
                "BCA: the price change period should be a multiple of 0.5 days");
        }

        uint step;
        PriceDirection d;
        (step, d) = calcPriceChangeStep(
            weiStartingPrice, weiFinalPrice, totalPriceChangePeriod);
        PriceSettings memory settings = PriceSettings ({
            startingPrice: weiStartingPrice,
            finalPrice: weiFinalPrice,
            priceChangePeriod: totalPriceChangePeriod,
            priceChangeStep: step,
            direction: d,
            timestampAddedAt: block.timestamp
        });
        _priceSettings[tokenId] = settings;
    }

    function priceSettingsOf(uint tokenId) public view returns (PriceSettings memory) {
        return _priceSettings[tokenId];
    }

    function priceOf(uint tokenId) public view returns (uint) {
        PriceSettings memory settings = priceSettingsOf(tokenId);
        if (settings.direction == PriceDirection.NONE) {
            return settings.startingPrice;
        }

        uint max = Math.max(settings.startingPrice, settings.finalPrice);
        uint min = Math.min(settings.startingPrice, settings.finalPrice);
        uint diff = max.sub(min);

        uint totalNumOfPeriodsToFinalPrice = diff.div(settings.priceChangeStep);
        uint numOfPeriods = 
            (block.timestamp - settings.timestampAddedAt).div(60)
            .mul(numOfPriceChangesPerHour()).div(60);

        uint result;
        if (numOfPeriods > totalNumOfPeriodsToFinalPrice) {
            result = settings.finalPrice;
        }
        else if (settings.direction == PriceDirection.DOWN) {
            result = settings.startingPrice.sub(settings.priceChangeStep.mul(numOfPeriods));
        }
        else {
            result = settings.startingPrice.add(settings.priceChangeStep.mul(numOfPeriods));
        }
        return result;
    }

    function calcPriceChangeStep(
        uint weiStartingPrice, 
        uint weiFinalPrice, 
        uint totalPriceChangePeriod) internal virtual view returns (uint, PriceDirection) {

        if (weiStartingPrice == weiFinalPrice) {
            return (0, PriceDirection.NONE);
        }

        uint max = Math.max(weiStartingPrice, weiFinalPrice);
        uint min = Math.min(weiStartingPrice, weiFinalPrice);
        uint diff = max.sub(min);
        PriceDirection direction = PriceDirection.DOWN;
        if (max == weiFinalPrice) {
            direction = PriceDirection.UP;
        }
        return (diff.div(totalPriceChangePeriod.mul(numOfPriceChangesPerHour())), direction);
    }

    function withdraw(uint tokenId) public virtual override onlyHolder(tokenId) {
        delete _priceSettings[tokenId];
        super.withdraw(tokenId);
    }
}

File 7 of 26 : DragonToken.sol
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "./access/BaseAccessControl.sol";
import "./structs/DragonInfoV2.sol";

contract DragonToken is ERC721Burnable, BaseAccessControl {

    using Address for address;
    using Counters for Counters.Counter;

    string public constant NONEXISTENT_TOKEN_ERROR = "DragonToken: nonexistent token";
    string public constant NOT_ENOUGH_PRIVILEGES_ERROR = "DragonToken: not enough privileges to call the method";
    string public constant DRAGON_EXISTS_ERROR = "DragonToken: a dragon with such ID already exists";
    string public constant BAD_CID_ERROR = "DragonToken: bad CID";
    string public constant CID_SET_ERROR = "DragonToken: CID is already set";
    
    Counters.Counter private _dragonIds;

    // Mapping token id to dragon details
    mapping(uint => uint) private _info;
    // Mapping token id to its breed counts
    mapping(uint => uint) private _countOfBreeds;
    // Mapping token id to its fight counts
    mapping(uint => uint) private _countOfFights;
    // Mapping token id to cid
    mapping(uint => string) private _cids;

    string private _defaultMetadataCid;
    address private _dragonCreator;
    address private _dragonReplicator;
    address private _crossbreed;
    address private _arena;

    constructor(uint dragonSeed, string memory defaultCid, address accessControl) 
    ERC721("CryptoDragons", "CD")
    BaseAccessControl(accessControl) {  
        _dragonIds = Counters.Counter({ _value: dragonSeed });
        _defaultMetadataCid = defaultCid;
    }

    function approveAndCall(address spender, uint256 tokenId, bytes calldata extraData) external returns (bool success) {
        require(_exists(tokenId), NONEXISTENT_TOKEN_ERROR);
        _approve(spender, tokenId);
        (bool _success, ) = 
            spender.call(
                abi.encodeWithSignature("receiveApproval(address,uint256,address,bytes)", 
                _msgSender(), 
                tokenId, 
                address(this), 
                extraData) 
            );
        if(!_success) { 
            revert("DragonToken: spender internal error"); 
        }
        return true;
    }

    function tokenURI(uint tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), NONEXISTENT_TOKEN_ERROR);
        string memory cid = _cids[tokenId];
        return string(abi.encodePacked("ipfs://", (bytes(cid).length > 0) ? cid : defaultMetadataCid()));
    }

    function dragonCreatorAddress() public view returns(address) {
        return _dragonCreator;
    }

    function setDragonCreatorAddress(address newAddress) external onlyRole(COO_ROLE) {
        address previousAddress = _dragonCreator;
        _dragonCreator = newAddress;
        emit AddressChanged("dragonCreator", previousAddress, newAddress);
    }

    function dragonReplicatorAddress() public view returns(address) {
        return _dragonReplicator;
    }

    function setDragonReplicatorAddress(address newAddress) external onlyRole(COO_ROLE) {
        address previousAddress = _dragonReplicator;
        _dragonReplicator = newAddress;
        emit AddressChanged("dragonReplicator", previousAddress, newAddress);
    }

    function crossbreedAddress() public view returns(address) {
        return _crossbreed;
    }

    function setCrossbreedAddress(address newAddress) external onlyRole(COO_ROLE) {
        address previousAddress = _crossbreed;
        _crossbreed = newAddress;
        emit AddressChanged("crossbreed", previousAddress, newAddress);
    }

    function arenaAddress() public view returns(address) {
        return _arena;
    }

    function setArenaAddress(address newAddress) external onlyRole(COO_ROLE) {
        address previousAddress = _arena;
        _arena = newAddress;
        emit AddressChanged("arena", previousAddress, newAddress);
    }

    function hasMetadataCid(uint tokenId) public view returns(bool) {
        require(_exists(tokenId), NONEXISTENT_TOKEN_ERROR);
        return bytes(_cids[tokenId]).length > 0;
    }

    function setMetadataCid(uint tokenId, string calldata cid) external onlyRole(COO_ROLE) {
        require(_exists(tokenId), NONEXISTENT_TOKEN_ERROR);
        require(bytes(cid).length >= 46, BAD_CID_ERROR);
        require(!hasMetadataCid(tokenId), CID_SET_ERROR);
        _cids[tokenId] = cid;
    }

    function defaultMetadataCid() public view returns (string memory){
        return _defaultMetadataCid;
    }

    function setDefaultMetadataCid(string calldata newDefaultCid) external onlyRole(COO_ROLE) {
        _defaultMetadataCid = newDefaultCid;
    }

    function dragonInfoV1(uint dragonId) external view returns (DragonInfo.Details memory) {
        require(_exists(dragonId), NONEXISTENT_TOKEN_ERROR);
        return DragonInfo.getDetails(_info[dragonId]);
    }

    function dragonInfo(uint dragonId) public view returns (DragonInfoV2.Details memory) {
        require(_exists(dragonId), NONEXISTENT_TOKEN_ERROR);
        return DragonInfoV2.getDetails(_info[dragonId]);
    }

    function breedsCount(uint dragonId) external view returns (uint) {
        require(_exists(dragonId), NONEXISTENT_TOKEN_ERROR);
        return _countOfBreeds[dragonId];
    }

    function fightsCount(uint dragonId) external view returns (uint) {
        require(_exists(dragonId), NONEXISTENT_TOKEN_ERROR);
        return _countOfFights[dragonId];
    }

    function strengthOf(uint dragonId) external view returns (uint) {
        DragonInfoV2.Details memory details = dragonInfo(dragonId);
        return details.strength > 0 ? details.strength : DragonInfo.calcStrength(details.genes);
    }

    function isFirstborn(uint dragonId) external view returns (bool) {
        DragonInfoV2.Details memory info = dragonInfo(dragonId);
        return info.eggId > 0;
    }

    function isMutant(uint dragonId) external view returns (bool) {
        DragonInfoV2.Details memory info = dragonInfo(dragonId);
        return info.mutatedFromId > 0;
    }

    function canBeMutated(uint dragonId) external view returns (bool) {
        DragonInfoV2.Details memory info = dragonInfo(dragonId);
        return info.eggId > 0 &&  info.mutatedToId == 0;
    }

    function isSiblings(uint dragon1Id, uint dragon2Id) external view returns (bool) {
        DragonInfoV2.Details memory info1 = dragonInfo(dragon1Id);
        DragonInfoV2.Details memory info2 = dragonInfo(dragon2Id);
        return 
            (info1.generation > 1 && info2.generation > 1) && //the 1st generation of dragons doesn't have siblings
            (info1.parent1Id == info2.parent1Id || info1.parent1Id == info2.parent2Id || 
            info1.parent2Id == info2.parent1Id || info1.parent2Id == info2.parent2Id);
    }

    function isParent(uint dragon1Id, uint dragon2Id) external view returns (bool) {
        DragonInfoV2.Details memory info = dragonInfo(dragon1Id);
        return info.parent1Id == dragon2Id || info.parent2Id == dragon2Id;
    }

    function mint(address to, DragonInfoV2.Details calldata info) external returns (uint) {
        require(_msgSender() == dragonCreatorAddress(), NOT_ENOUGH_PRIVILEGES_ERROR);
        
        _dragonIds.increment();
        uint newDragonId = uint(_dragonIds.current());
        
        _info[newDragonId] = DragonInfoV2.getValue(info);
        _mint(to, newDragonId);

        if (info.mutatedFromId > 0) { // if it's a mutant
            _setMutant(info.mutatedFromId, newDragonId);
        }

        return newDragonId;
    }

    function incrementFight(uint dragonId) external returns (uint) {
        require(_msgSender() == arenaAddress(), NOT_ENOUGH_PRIVILEGES_ERROR);
        _countOfFights[dragonId]++;
        return _countOfFights[dragonId];
    }

    function incrementBreed(uint dragonId) external returns (uint) {
        require(_msgSender() == crossbreedAddress(), NOT_ENOUGH_PRIVILEGES_ERROR);
        _countOfBreeds[dragonId]++;
        return _countOfBreeds[dragonId];
    }

    function mintReplica(address to, uint dragonId, uint value, string memory cid) external returns (uint) {
        require(_msgSender() == dragonReplicatorAddress(), NOT_ENOUGH_PRIVILEGES_ERROR);
        require(_info[dragonId] == 0, DRAGON_EXISTS_ERROR);
        
        _info[dragonId] = DragonInfoV2.getValue(DragonInfoV2.fromV1(value));
        _cids[dragonId] = cid;
        
        _mint(to, dragonId);

        return dragonId;
    }

    function setStrength(uint dragonId) external returns (uint) {
        DragonInfoV2.Details memory details = dragonInfo(dragonId);
        if (details.strength == 0) {
            details.strength = DragonInfo.calcStrength(details.genes);
            _info[dragonId] = DragonInfoV2.getValue(details);
        }
        return details.strength;
    }

    function _setMutant(uint dragonId, uint mutantDragonId) internal {
        DragonInfoV2.Details memory details = dragonInfo(dragonId);
        details.mutatedToId = mutantDragonId;
        _info[dragonId] = DragonInfoV2.getValue(details);
    }
}

File 8 of 26 : Math.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @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 / b + (a % b == 0 ? 0 : 1);
    }
}

File 9 of 26 : BytesLib.sol
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;

library BytesLib {
    function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) {
        require(_bytes.length >= _start + 20, "toAddress_outOfBounds");
        address tempAddress;

        assembly {
            tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000)
        }

        return tempAddress;
    }
    
    function toUint256(bytes memory _bytes, uint _start) internal pure returns (uint) {
        require(_bytes.length >= _start + 32, "toUint256_outOfBounds");
        uint tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x20), _start))
        }

        return tempUint;
    }

    function toTuple128(bytes memory _bytes, uint256 _start) internal pure returns (uint, uint) {
        require(_bytes.length >= _start + 32, "toTuple16_outOfBounds");
        uint tempUint;
        uint n1;
        uint n2;

        assembly {
            tempUint := mload(add(add(_bytes, 0x20), _start))
            n1 := and(shr(0x80, tempUint), 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
            n2 := and(tempUint, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
        }

        return (n1, n2);
    }
}

File 10 of 26 : LockableReceiver.sol
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "./access/BaseAccessControl.sol";

abstract contract LockableReceiver is BaseAccessControl, Pausable, IERC721Receiver {
    
    using Address for address payable;

    address private _tokenContractAddress;
    address private _coinContractAddress;
    mapping(uint => address) private _lockedTokens;

    event TokenLocked(uint tokenId, address indexed holder);
    event TokenWithdrawn(uint tokenId, address indexed holder);
    event EthersWithdrawn(address indexed operator, address indexed to, uint amount);
    event CoinsWithdrawn(address indexed operator, address indexed to, uint amount);

    constructor (address accessControl, address tokenContractAddress, address coinContractAddress) 
    BaseAccessControl(accessControl) {
        _tokenContractAddress = tokenContractAddress;
        _coinContractAddress = coinContractAddress;
    }

    modifier whenLocked(uint tokenId) {
        require(isLocked(tokenId), "LockableReceiver: token must be locked");
        _;
    }

    modifier onlyHolder(uint tokenId) {
        require(holderOf(tokenId) == _msgSender(), "LockableReceiver: caller is not the token holder");
        _;
    }

    function onERC721Received(address operator, address /*from*/, uint /*tokenId*/, bytes calldata /*data*/) 
        external 
        virtual 
        override 
        whenNotPaused 
        returns (bytes4) {
        require(operator == address(this), "LockableReceiver: the caller is not a valid operator");
        return this.onERC721Received.selector;
    }

    function receiveApproval(address sender, uint tokenId, address _tokenContract, bytes calldata data) external virtual {
        require(tokenContract() == _msgSender(), "LockableReceiver: not enough privileges to call the method");
        require(_tokenContract == tokenContract(), "LockableReceiver: unable to receive the given token");
    
        IERC721(tokenContract()).safeTransferFrom(sender, address(this), tokenId, data);
        
        _lock(tokenId, sender);
        processERC721(sender, tokenId, data);
    }

    function processERC721(address from, uint tokenId, bytes calldata data) internal virtual {
    }

    function _lock(uint tokenId, address holder) internal {
        _lockedTokens[tokenId] = holder;
        emit TokenLocked(tokenId, holder);
    }

    function _unlock(uint tokenId) internal {
        delete _lockedTokens[tokenId];
    }

    function tokenContract() public view returns (address) {
        return _tokenContractAddress;
    }

    function setTokenContract(address newAddress) external onlyRole(COO_ROLE) {
        address previousAddress = _tokenContractAddress;
        _tokenContractAddress = newAddress;
        emit AddressChanged("tokenContract", previousAddress, newAddress);
    }

    function coinContract() public view returns (address) {
        return _coinContractAddress;
    }

    function setCoinContract(address newAddress) external onlyRole(COO_ROLE) {
        address previousAddress = _coinContractAddress;
        _coinContractAddress = newAddress;
        emit AddressChanged("coinContract", previousAddress, newAddress);
    }

    function pause() external onlyRole(COO_ROLE) {
        _pause();
    }

    function unpause() external onlyRole(COO_ROLE) {
        _unpause();
    }

    function isLocked(uint tokenId) public view returns (bool) {
        return _lockedTokens[tokenId] != address(0);
    }

    function holderOf(uint tokenId) public view returns (address) {
        return _lockedTokens[tokenId];
    }

    function withdrawEthers(uint amount, address payable to) external virtual onlyRole(CFO_ROLE) {
        to.sendValue(amount);
        emit EthersWithdrawn(_msgSender(), to, amount);
    }

    function withdrawCoins(uint amount, address to) external virtual onlyRole(CFO_ROLE) {
        IERC20(coinContract()).transfer(to, amount);
        emit CoinsWithdrawn(_msgSender(), to, amount);
    }

    function withdraw(uint tokenId) public virtual onlyHolder(tokenId) {
        _transferTokenToHolder(tokenId);
        emit TokenWithdrawn(tokenId, _msgSender());
    }

    function _transferTokenToHolder(uint tokenId) internal virtual {
        address holder = holderOf(tokenId);
        if (holder != address(0)) {
            IERC721(tokenContract()).safeTransferFrom(address(this), holder, tokenId);
            _unlock(tokenId);
        }
    }
}

File 11 of 26 : Pausable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @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);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

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

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

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

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

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

File 12 of 26 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

File 13 of 26 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

File 14 of 26 : BaseAccessControl.sol
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/IAccessControl.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "../interfaces/IChangeableVariables.sol";

abstract contract BaseAccessControl is Context, IChangeableVariables {

    bytes32 public constant CEO_ROLE = keccak256("CEO");
    bytes32 public constant CFO_ROLE = keccak256("CFO");
    bytes32 public constant COO_ROLE = keccak256("COO");

    address private _accessControl;

    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

    constructor (address accessControl) Context() {
        _accessControl = accessControl;
    }

    function accessControlAddress() public view returns (address) {
        return _accessControl;
    }

    function setAccessControlAddress(address newAddress) external onlyRole(COO_ROLE) {
        address previousAddress = _accessControl;
        _accessControl = newAddress;
        emit AddressChanged("accessControl", previousAddress, newAddress);
    }

    function hasRole(bytes32 role, address account) public view returns (bool) {
        IAccessControl accessControl = IAccessControl(accessControlAddress());
        return accessControl.hasRole(role, account) || accessControl.hasRole(CEO_ROLE, account);
    }

    function _checkRole(bytes32 role, address account) internal view {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }
}

File 15 of 26 : Context.sol
// SPDX-License-Identifier: MIT

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 16 of 26 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

File 17 of 26 : IAccessControl.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

File 18 of 26 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

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

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

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

File 19 of 26 : IChangeableVariables.sol
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;

interface IChangeableVariables {
    event AddressChanged(string fieldName, address previousAddress, address newAddress);
    event ValueChanged(string fieldName, uint previousValue, uint newValue);
    event BoolValueChanged(string fieldName, bool previousValue, bool newValue);
}

File 20 of 26 : ERC721Burnable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "../../../utils/Context.sol";

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

File 21 of 26 : Counters.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

File 22 of 26 : DragonInfoV2.sol
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;

import "./DragonInfo.sol";

library DragonInfoV2 {

    struct Details { 
        uint genes;
        uint eggId;
        uint parent1Id;
        uint parent2Id;
        uint generation;
        uint strength;
        uint mutatedToId;
        uint mutatedFromId;
        DragonInfo.Types dragonType;
    }

    function fromV1(uint value) internal pure returns (Details memory) {
        DragonInfo.Details memory v1details = DragonInfo.getDetails(value);
        return Details ({
            genes: v1details.genes,
            eggId: v1details.eggId, 
            parent1Id: v1details.parent1Id,
            parent2Id: v1details.parent2Id,
            generation: v1details.generation,
            strength: v1details.strength,
            dragonType: v1details.dragonType,
            mutatedToId: 0,
            mutatedFromId: 0
        });
    }

    function getDetails(uint value) internal pure returns (Details memory) {
        return Details (
            {
                genes: uint256(uint104(value)),
                parent1Id: uint256(uint24(value >> 104)),
                parent2Id: uint256(uint24(value >> 128)),
                generation: uint256(uint8(value >> 152)),
                strength: uint256(uint16(value >> 160)),
                dragonType: DragonInfo.Types(uint8(value >> 176)),
                eggId: uint256(uint16(value >> 184)),
                mutatedToId: uint256(uint24(value >> 200)),
                mutatedFromId: uint256(uint24(value >> 224))
            }
        );
    }

    function getValue(Details memory details) internal pure returns (uint) {
        uint result = uint(details.genes);
        result |= details.parent1Id << 104;
        result |= details.parent2Id << 128;
        result |= details.generation << 152;
        result |= details.strength << 160;
        result |= uint(details.dragonType) << 176;
        result |= details.eggId << 184;
        result |= details.mutatedToId << 200;
        result |= details.mutatedFromId << 224;
        return result;
    }
}

File 23 of 26 : ERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

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

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

        _approve(to, tokenId);
    }

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

        return _tokenApprovals[tokenId];
    }

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

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

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

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

        _transfer(from, to, tokenId);
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

        _beforeTokenTransfer(from, to, tokenId);

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

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

        emit Transfer(from, to, tokenId);
    }

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

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

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

File 24 of 26 : IERC721Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

File 25 of 26 : ERC165.sol
// SPDX-License-Identifier: MIT

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 26 of 26 : DragonInfo.sol
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;

library DragonInfo {
    
    uint constant MASK = 0xF000000000000000000000000;

    enum Types { 
        Unknown,
        Common, 
        Rare16, 
        Rare17, 
        Rare18, 
        Rare19,
        Epic20, 
        Epic21,
        Epic22,
        Epic23,
        Epic24, 
        Legendary
    }

    struct Details { 
        uint genes;
        uint eggId;
        uint parent1Id;
        uint parent2Id;
        uint generation;
        uint strength;
        Types dragonType;
    }

    function getDetails(uint value) internal pure returns (Details memory) {
        return Details (
            {
                genes: uint256(uint104(value)),
                parent1Id: uint256(uint32(value >> 104)),
                parent2Id: uint256(uint32(value >> 136)),
                generation: uint256(uint16(value >> 168)),
                strength: uint256(uint16(value >> 184)),
                dragonType: Types(uint16(value >> 200)),
                eggId: uint256(uint32(value >> 216))
            }
        );
    }

    function getValue(Details memory details) internal pure returns (uint) {
        uint result = uint(details.genes);
        result |= details.parent1Id << 104;
        result |= details.parent2Id << 136;
        result |= details.generation << 168;
        result |= details.strength << 184;
        result |= uint(details.dragonType) << 200;
        result |= details.eggId << 216;
        return result;
    }

    function calcType(uint genes) internal pure returns (Types) {
        uint mask = MASK;
        uint numRare = 0;
        uint numEpic = 0;
        for (uint i = 0; i < 10; i++) { //just Rare and Epic genes are important to check
            if (genes & mask > 0) {
                if (i < 5) { //Epic-range
                    numEpic++;
                }
                else { //Rare-range
                    numRare++;
                }
            }
            mask = mask >> 4;
        }
        Types result = Types.Unknown;
        if (numEpic == 5 && numRare == 5) {
            result = Types.Legendary;
        }
        else if (numEpic < 5 && numRare == 5) {
            result = Types(6 + numEpic);
        }
        else if (numEpic == 0 && numRare < 5) {
            result = Types(1 + numRare);
        }
        else if (numEpic == 0 && numRare == 0) {
            result = Types.Common;
        }

        return result;
    }

    function calcStrength(uint genes) internal pure returns (uint) {
        uint mask = MASK;
        uint strength = 0;
        for (uint i = 0; i < 25; i++) { 
            uint gLevel = (genes & mask) >> ((24 - i) * 4);
            if (i < 6) { //Epic
                strength += 3 * (25 - i) * gLevel;
            } 
            else if (i < 10) { //Rare 
                strength += 2 * (25 - i) * gLevel;
            }
            else { //Common-range
                if (gLevel > 0) {
                    strength += (25 - i) * gLevel;
                }
                else {
                    strength += (25 - i);
                }
            }
            mask = mask >> 4;
        }
        return strength;
    }

    function calcGeneration(uint g1, uint g2) internal pure returns (uint) {
        return (g1 >= g2 ? g1 : g2) + 1;
    }
}

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

Contract ABI

[{"inputs":[{"internalType":"address","name":"accessControl","type":"address"},{"internalType":"address","name":"dragonToken","type":"address"},{"internalType":"address","name":"coinContract","type":"address"},{"internalType":"uint256","name":"fees100","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"fieldName","type":"string"},{"indexed":false,"internalType":"address","name":"previousAddress","type":"address"},{"indexed":false,"internalType":"address","name":"newAddress","type":"address"}],"name":"AddressChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"fieldName","type":"string"},{"indexed":false,"internalType":"bool","name":"previousValue","type":"bool"},{"indexed":false,"internalType":"bool","name":"newValue","type":"bool"}],"name":"BoolValueChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"CoinsWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EthersWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"weiAmount","type":"uint256"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"},{"indexed":false,"internalType":"uint256","name":"weiHolderAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"weiFeesAmount","type":"uint256"},{"indexed":true,"internalType":"address","name":"oldOwner","type":"address"}],"name":"TokenBought","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"holder","type":"address"}],"name":"TokenLocked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"holder","type":"address"}],"name":"TokenWithdrawn","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"fieldName","type":"string"},{"indexed":false,"internalType":"uint256","name":"previousValue","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newValue","type":"uint256"}],"name":"ValueChanged","type":"event"},{"inputs":[],"name":"CEO_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CFO_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"COO_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"accessControlAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"buy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"coinContract","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feesPercent","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"holderOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"isLocked","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"priceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"priceSettingsOf","outputs":[{"components":[{"internalType":"uint256","name":"startingPrice","type":"uint256"},{"internalType":"uint256","name":"finalPrice","type":"uint256"},{"internalType":"uint256","name":"priceChangePeriod","type":"uint256"},{"internalType":"uint256","name":"priceChangeStep","type":"uint256"},{"internalType":"enum BaseAuctionReceiver.PriceDirection","name":"direction","type":"uint8"},{"internalType":"uint256","name":"timestampAddedAt","type":"uint256"}],"internalType":"struct BaseAuctionReceiver.PriceSettings","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"_tokenContract","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"receiveApproval","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAddress","type":"address"}],"name":"setAccessControlAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAddress","type":"address"}],"name":"setCoinContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newValue","type":"uint256"}],"name":"setFeesPercent","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newValue","type":"uint256"}],"name":"setNumOfPriceChangesPerHour","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAddress","type":"address"}],"name":"setTokenContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"tokenContract","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"to","type":"address"}],"name":"withdrawCoins","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address payable","name":"to","type":"address"}],"name":"withdrawEthers","outputs":[],"stateMutability":"nonpayable","type":"function"}]

Deployed Bytecode

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

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading...
Loading

Validator Index Block Amount
View All Withdrawals

Txn Hash Block Value Eth2 PubKey Valid
View All Deposits
[ Download: CSV Export  ]

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.