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pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;

import "./Interfaces/AssetToken.sol";
import "./common/Interfaces/ERC20.sol";
import "./Interfaces/ERC20Extended.sol";
import "./common/BaseWithStorage/MetaTransactionReceiver.sol";
import "./common/Libraries/SafeMathWithRequire.sol";
import "./Catalyst/GemToken.sol";
import "./Catalyst/CatalystToken.sol";
import "./CatalystRegistry.sol";
import "./BaseWithStorage/ERC20Group.sol";


/// @notice Gateway to mint Asset with Catalyst, Gems and Sand
contract CatalystMinter is MetaTransactionReceiver {
    /// @dev emitted when fee collector (that receive the sand fee) get changed
    /// @param newCollector address of the new collector, address(0) means the fee will be burned
    event FeeCollector(address newCollector);

    function setFeeCollector(address newCollector) external {
        require(msg.sender == _admin, "NOT_AUTHORIZED_ADMIN");
        _setFeeCollector(newCollector);
    }

    event GemAdditionFee(uint256 newFee);

    function setGemAdditionFee(uint256 newFee) external {
        require(msg.sender == _admin, "NOT_AUTHORIZED_ADMIN");
        _setGemAdditionFee(newFee);
    }

    /// @notice mint one Asset token.
    /// @param from address creating the Asset, need to be the tx sender or meta tx signer.
    /// @param packId unused packId that will let you predict the resulting tokenId.
    /// @param metadataHash cidv1 ipfs hash of the folder where 0.json file contains the metadata.
    /// @param catalystId address of the Catalyst ERC20 token to burn.
    /// @param gemIds list of gem ids to burn in the catalyst.
    /// @param quantity asset supply to mint
    /// @param to destination address receiving the minted tokens.
    /// @param data extra data.
    function mint(
        address from,
        uint40 packId,
        bytes32 metadataHash,
        uint256 catalystId,
        uint256[] calldata gemIds,
        uint256 quantity,
        address to,
        bytes calldata data
    ) external returns (uint256) {
        _checkAuthorization(from, to);
        _burnCatalyst(from, catalystId);
        uint16 maxGems = _checkQuantityAndBurnSandAndGems(from, catalystId, gemIds, quantity);
        uint256 id = _asset.mint(from, packId, metadataHash, quantity, 0, to, data);
        _catalystRegistry.setCatalyst(id, catalystId, maxGems, gemIds);
        return id;
    }

    /// @notice associate a catalyst to a fungible Asset token by extracting it as ERC721 first.
    /// @param from address from which the Asset token belongs to.
    /// @param assetId tokenId of the Asset being extracted.
    /// @param catalystId address of the catalyst token to use and burn.
    /// @param gemIds list of gems to socket into the catalyst (burned).
    /// @param to destination address receiving the extracted and upgraded ERC721 Asset token.
    function extractAndChangeCatalyst(
        address from,
        uint256 assetId,
        uint256 catalystId,
        uint256[] calldata gemIds,
        address to
    ) external returns (uint256 tokenId) {
        _checkAuthorization(from, to);
        tokenId = _asset.extractERC721From(from, assetId, from);
        _changeCatalyst(from, tokenId, catalystId, gemIds, to);
    }

    /// @notice associate a new catalyst to a non-fungible Asset token.
    /// @param from address from which the Asset token belongs to.
    /// @param assetId tokenId of the Asset being updated.
    /// @param catalystId address of the catalyst token to use and burn.
    /// @param gemIds list of gems to socket into the catalyst (burned).
    /// @param to destination address receiving the Asset token.
    function changeCatalyst(
        address from,
        uint256 assetId,
        uint256 catalystId,
        uint256[] calldata gemIds,
        address to
    ) external returns (uint256 tokenId) {
        _checkAuthorization(from, to);
        _changeCatalyst(from, assetId, catalystId, gemIds, to);
        return assetId;
    }

    /// @notice add gems to a fungible Asset token by extracting it as ERC721 first.
    /// @param from address from which the Asset token belongs to.
    /// @param assetId tokenId of the Asset being extracted.
    /// @param gemIds list of gems to socket into the existing catalyst (burned).
    /// @param to destination address receiving the extracted and upgraded ERC721 Asset token.
    function extractAndAddGems(
        address from,
        uint256 assetId,
        uint256[] calldata gemIds,
        address to
    ) external returns (uint256 tokenId) {
        _checkAuthorization(from, to);
        tokenId = _asset.extractERC721From(from, assetId, from);
        _addGems(from, tokenId, gemIds, to);
    }

    /// @notice add gems to a non-fungible Asset token.
    /// @param from address from which the Asset token belongs to.
    /// @param assetId tokenId of the Asset to which the gems will be added to.
    /// @param gemIds list of gems to socket into the existing catalyst (burned).
    /// @param to destination address receiving the extracted and upgraded ERC721 Asset token.
    function addGems(
        address from,
        uint256 assetId,
        uint256[] calldata gemIds,
        address to
    ) external {
        _checkAuthorization(from, to);
        _addGems(from, assetId, gemIds, to);
    }

    struct AssetData {
        uint256[] gemIds;
        uint256 quantity;
        uint256 catalystId;
    }

    /// @notice mint multiple Asset tokens.
    /// @param from address creating the Asset, need to be the tx sender or meta tx signer.
    /// @param packId unused packId that will let you predict the resulting tokenId.
    /// @param metadataHash cidv1 ipfs hash of the folder where 0.json file contains the metadata.
    /// @param gemsQuantities quantities of gems to be used for each id in order
    /// @param catalystsQuantities quantities of catalyst to be used for each id in order
    /// @param assets contains the data to associate catalyst and gems to the assets.
    /// @param to destination address receiving the minted tokens.
    /// @param data extra data.
    function mintMultiple(
        address from,
        uint40 packId,
        bytes32 metadataHash,
        uint256[] memory gemsQuantities,
        uint256[] memory catalystsQuantities,
        AssetData[] memory assets,
        address to,
        bytes memory data
    ) public returns (uint256[] memory ids) {
        require(assets.length != 0, "INVALID_0_ASSETS");
        _checkAuthorization(from, to);
        return _mintMultiple(from, packId, metadataHash, gemsQuantities, catalystsQuantities, assets, to, data);
    }

    // //////////////////// INTERNALS ////////////////////

    function _checkQuantityAndBurnSandAndGems(
        address from,
        uint256 catalystId,
        uint256[] memory gemIds,
        uint256 quantity
    ) internal returns (uint16) {
        (uint16 maxGems, uint16 minQuantity, uint16 maxQuantity, uint256 sandMintingFee, ) = _getMintData(catalystId);
        require(minQuantity <= quantity && quantity <= maxQuantity, "INVALID_QUANTITY");
        require(gemIds.length <= maxGems, "INVALID_GEMS_TOO_MANY");
        _burnSingleGems(from, gemIds);
        _chargeSand(from, quantity.mul(sandMintingFee));
        return maxGems;
    }

    function _mintMultiple(
        address from,
        uint40 packId,
        bytes32 metadataHash,
        uint256[] memory gemsQuantities,
        uint256[] memory catalystsQuantities,
        AssetData[] memory assets,
        address to,
        bytes memory data
    ) internal returns (uint256[] memory) {
        (uint256 totalSandFee, uint256[] memory supplies, uint16[] memory maxGemsList) = _handleMultipleCatalysts(
            from,
            gemsQuantities,
            catalystsQuantities,
            assets
        );

        _chargeSand(from, totalSandFee);

        return _mintAssets(from, packId, metadataHash, assets, supplies, maxGemsList, to, data);
    }

    function _chargeSand(address from, uint256 sandFee) internal {
        address feeCollector = _feeCollector;
        if (feeCollector != address(0) && sandFee != 0) {
            if (feeCollector == address(BURN_ADDRESS)) {
                // special address for burn
                _sand.burnFor(from, sandFee);
            } else {
                _sand.transferFrom(from, _feeCollector, sandFee);
            }
        }
    }

    function _extractMintData(uint256 data)
        internal
        pure
        returns (
            uint16 maxGems,
            uint16 minQuantity,
            uint16 maxQuantity,
            uint256 sandMintingFee,
            uint256 sandUpdateFee
        )
    {
        maxGems = uint16(data >> 240);
        minQuantity = uint16((data >> 224) % 2**16);
        maxQuantity = uint16((data >> 208) % 2**16);
        sandMintingFee = uint256((data >> 120) % 2**88);
        sandUpdateFee = uint256(data % 2**88);
    }

    function _getMintData(uint256 catalystId)
        internal
        view
        returns (
            uint16,
            uint16,
            uint16,
            uint256,
            uint256
        )
    {
        if (catalystId == 0) {
            return _extractMintData(_common_mint_data);
        } else if (catalystId == 1) {
            return _extractMintData(_rare_mint_data);
        } else if (catalystId == 2) {
            return _extractMintData(_epic_mint_data);
        } else if (catalystId == 3) {
            return _extractMintData(_legendary_mint_data);
        }
        return _catalysts.getMintData(catalystId);
    }

    function _handleMultipleCatalysts(
        address from,
        uint256[] memory gemsQuantities,
        uint256[] memory catalystsQuantities,
        AssetData[] memory assets
    )
        internal
        returns (
            uint256 totalSandFee,
            uint256[] memory supplies,
            uint16[] memory maxGemsList
        )
    {
        _burnCatalysts(from, catalystsQuantities);
        _burnGems(from, gemsQuantities);

        supplies = new uint256[](assets.length);
        maxGemsList = new uint16[](assets.length);

        for (uint256 i = 0; i < assets.length; i++) {
            require(catalystsQuantities[assets[i].catalystId] != 0, "INVALID_CATALYST_NOT_ENOUGH");
            catalystsQuantities[assets[i].catalystId]--;
            gemsQuantities = _checkGemsQuantities(gemsQuantities, assets[i].gemIds);
            (uint16 maxGems, uint16 minQuantity, uint16 maxQuantity, uint256 sandMintingFee, ) = _getMintData(assets[i].catalystId);
            require(minQuantity <= assets[i].quantity && assets[i].quantity <= maxQuantity, "INVALID_QUANTITY");
            require(assets[i].gemIds.length <= maxGems, "INVALID_GEMS_TOO_MANY");
            maxGemsList[i] = maxGems;
            supplies[i] = assets[i].quantity;
            totalSandFee = totalSandFee.add(sandMintingFee.mul(assets[i].quantity));
        }
    }

    function _checkGemsQuantities(uint256[] memory gemsQuantities, uint256[] memory gemIds) internal pure returns (uint256[] memory) {
        for (uint256 i = 0; i < gemIds.length; i++) {
            require(gemsQuantities[gemIds[i]] != 0, "INVALID_GEMS_NOT_ENOUGH");
            gemsQuantities[gemIds[i]]--;
        }
        return gemsQuantities;
    }

    function _burnCatalysts(address from, uint256[] memory catalystsQuantities) internal {
        uint256[] memory ids = new uint256[](catalystsQuantities.length);
        for (uint256 i = 0; i < ids.length; i++) {
            ids[i] = i;
        }
        _catalysts.batchBurnFrom(from, ids, catalystsQuantities);
    }

    function _burnGems(address from, uint256[] memory gemsQuantities) internal {
        uint256[] memory ids = new uint256[](gemsQuantities.length);
        for (uint256 i = 0; i < ids.length; i++) {
            ids[i] = i;
        }
        _gems.batchBurnFrom(from, ids, gemsQuantities);
    }

    function _mintAssets(
        address from,
        uint40 packId,
        bytes32 metadataHash,
        AssetData[] memory assets,
        uint256[] memory supplies,
        uint16[] memory maxGemsList,
        address to,
        bytes memory data
    ) internal returns (uint256[] memory tokenIds) {
        tokenIds = _asset.mintMultiple(from, packId, metadataHash, supplies, "", to, data);
        for (uint256 i = 0; i < tokenIds.length; i++) {
            _catalystRegistry.setCatalyst(tokenIds[i], assets[i].catalystId, maxGemsList[i], assets[i].gemIds);
        }
    }

    function _changeCatalyst(
        address from,
        uint256 assetId,
        uint256 catalystId,
        uint256[] memory gemIds,
        address to
    ) internal {
        require(assetId & IS_NFT != 0, "INVALID_NOT_NFT"); // Asset (ERC1155ERC721.sol) ensure NFT will return true here and non-NFT will return false
        _burnCatalyst(from, catalystId);
        (uint16 maxGems, , , , uint256 sandUpdateFee) = _getMintData(catalystId);
        require(gemIds.length <= maxGems, "INVALID_GEMS_TOO_MANY");
        _burnGems(from, gemIds);
        _chargeSand(from, sandUpdateFee);

        _catalystRegistry.setCatalyst(assetId, catalystId, maxGems, gemIds);

        _transfer(from, to, assetId);
    }

    function _addGems(
        address from,
        uint256 assetId,
        uint256[] memory gemIds,
        address to
    ) internal {
        require(assetId & IS_NFT != 0, "INVALID_NOT_NFT"); // Asset (ERC1155ERC721.sol) ensure NFT will return true here and non-NFT will return false
        _catalystRegistry.addGems(assetId, gemIds);
        _chargeSand(from, gemIds.length.mul(_gemAdditionFee));
        _transfer(from, to, assetId);
    }

    function _transfer(
        address from,
        address to,
        uint256 assetId
    ) internal {
        if (from != to) {
            _asset.safeTransferFrom(from, to, assetId);
        }
    }

    function _checkAuthorization(address from, address to) internal view {
        require(to != address(0), "INVALID_TO_ZERO_ADDRESS");
        require(from == msg.sender || _metaTransactionContracts[msg.sender], "NOT_SENDER");
    }

    function _burnSingleGems(address from, uint256[] memory gemIds) internal {
        uint256[] memory amounts = new uint256[](gemIds.length);
        for (uint256 i = 0; i < gemIds.length; i++) {
            amounts[i] = 1;
        }
        _gems.batchBurnFrom(from, gemIds, amounts);
    }

    function _burnCatalyst(address from, uint256 catalystId) internal {
        _catalysts.burnFrom(from, catalystId, 1);
    }

    function _setFeeCollector(address newCollector) internal {
        _feeCollector = newCollector;
        emit FeeCollector(newCollector);
    }

    function _setGemAdditionFee(uint256 newFee) internal {
        _gemAdditionFee = newFee;
        emit GemAdditionFee(newFee);
    }

    // /////////////////// UTILITIES /////////////////////
    using SafeMathWithRequire for uint256;

    // //////////////////////// DATA /////////////////////
    uint256 private constant IS_NFT = 0x0000000000000000000000000000000000000000800000000000000000000000;
    address private constant BURN_ADDRESS = 0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF;

    ERC20Extended internal immutable _sand;
    AssetToken internal immutable _asset;
    GemToken internal immutable _gems;
    CatalystToken internal immutable _catalysts;
    CatalystRegistry internal immutable _catalystRegistry;
    address internal _feeCollector;

    uint256 internal immutable _common_mint_data;
    uint256 internal immutable _rare_mint_data;
    uint256 internal immutable _epic_mint_data;
    uint256 internal immutable _legendary_mint_data;

    uint256 internal _gemAdditionFee;

    // /////////////////// CONSTRUCTOR ////////////////////
    constructor(
        CatalystRegistry catalystRegistry,
        ERC20Extended sand,
        AssetToken asset,
        GemToken gems,
        address metaTx,
        address admin,
        address feeCollector,
        uint256 gemAdditionFee,
        CatalystToken catalysts,
        uint256[4] memory bakedInMintdata
    ) public {
        _catalystRegistry = catalystRegistry;
        _sand = sand;
        _asset = asset;
        _gems = gems;
        _catalysts = catalysts;
        _admin = admin;
        _setGemAdditionFee(gemAdditionFee);
        _setFeeCollector(feeCollector);
        _setMetaTransactionProcessor(metaTx, true);
        _common_mint_data = bakedInMintdata[0];
        _rare_mint_data = bakedInMintdata[1];
        _epic_mint_data = bakedInMintdata[2];
        _legendary_mint_data = bakedInMintdata[3];
    }
}

pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;

import "./ERC20SubToken.sol";
import "../common/Libraries/SafeMath.sol";
import "../common/Libraries/AddressUtils.sol";
import "../common/Libraries/ObjectLib32.sol";
import "../common/Libraries/BytesUtil.sol";

import "../common/BaseWithStorage/SuperOperators.sol";
import "../common/BaseWithStorage/MetaTransactionReceiver.sol";


contract ERC20Group is SuperOperators, MetaTransactionReceiver {
    uint256 internal constant MAX_UINT256 = ~uint256(0);

    /// @notice emitted when a new Token is added to the group.
    /// @param subToken the token added, its id will be its index in the array.
    event SubToken(ERC20SubToken subToken);

    /// @notice emitted when `owner` is allowing or disallowing `operator` to transfer tokens on its behalf.
    /// @param owner the address approving.
    /// @param operator the address being granted (or revoked) permission to transfer.
    /// @param approved whether the operator is granted transfer right or not.
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    event Minter(address minter, bool enabled);

    /// @notice Enable or disable the ability of `minter` to mint tokens
    /// @param minter address that will be given/removed minter right.
    /// @param enabled set whether the minter is enabled or disabled.
    function setMinter(address minter, bool enabled) external {
        require(msg.sender == _admin, "NOT_AUTHORIZED_ADMIN");
        _setMinter(minter, enabled);
    }

    /// @notice check whether address `who` is given minter rights.
    /// @param who The address to query.
    /// @return whether the address has minter rights.
    function isMinter(address who) public view returns (bool) {
        return _minters[who];
    }

    /// @dev mint more tokens of a specific subToken .
    /// @param to address receiving the tokens.
    /// @param id subToken id (also the index at which it was added).
    /// @param amount of token minted.
    function mint(
        address to,
        uint256 id,
        uint256 amount
    ) external {
        require(_minters[msg.sender], "NOT_AUTHORIZED_MINTER");
        (uint256 bin, uint256 index) = id.getTokenBinIndex();
        mapping(uint256 => uint256) storage toPack = _packedTokenBalance[to];
        toPack[bin] = toPack[bin].updateTokenBalance(index, amount, ObjectLib32.Operations.ADD);
        _packedSupplies[bin] = _packedSupplies[bin].updateTokenBalance(index, amount, ObjectLib32.Operations.ADD);
        _erc20s[id].emitTransferEvent(address(0), to, amount);
    }

    /// @dev mint more tokens of a several subToken .
    /// @param to address receiving the tokens.
    /// @param ids subToken ids (also the index at which it was added).
    /// @param amounts for each token minted.
    function batchMint(
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts
    ) external {
        require(_minters[msg.sender], "NOT_AUTHORIZED_MINTER");
        require(ids.length == amounts.length, "INVALID_INCONSISTENT_LENGTH");
        _batchMint(to, ids, amounts);
    }

    function _batchMint(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts
    ) internal {
        uint256 lastBin = MAX_UINT256;
        uint256 bal = 0;
        uint256 supply = 0;
        mapping(uint256 => uint256) storage toPack = _packedTokenBalance[to];
        for (uint256 i = 0; i < ids.length; i++) {
            if (amounts[i] != 0) {
                (uint256 bin, uint256 index) = ids[i].getTokenBinIndex();
                if (lastBin == MAX_UINT256) {
                    lastBin = bin;
                    bal = toPack[bin].updateTokenBalance(index, amounts[i], ObjectLib32.Operations.ADD);
                    supply = _packedSupplies[bin].updateTokenBalance(index, amounts[i], ObjectLib32.Operations.ADD);
                } else {
                    if (bin != lastBin) {
                        toPack[lastBin] = bal;
                        bal = toPack[bin];
                        _packedSupplies[lastBin] = supply;
                        supply = _packedSupplies[bin];
                        lastBin = bin;
                    }
                    bal = bal.updateTokenBalance(index, amounts[i], ObjectLib32.Operations.ADD);
                    supply = supply.updateTokenBalance(index, amounts[i], ObjectLib32.Operations.ADD);
                }
                _erc20s[ids[i]].emitTransferEvent(address(0), to, amounts[i]);
            }
        }
        if (lastBin != MAX_UINT256) {
            toPack[lastBin] = bal;
            _packedSupplies[lastBin] = supply;
        }
    }

    /// @notice return the current total supply of a specific subToken.
    /// @param id subToken id.
    /// @return supply current total number of tokens.
    function supplyOf(uint256 id) external view returns (uint256 supply) {
        (uint256 bin, uint256 index) = id.getTokenBinIndex();
        return _packedSupplies[bin].getValueInBin(index);
    }

    /// @notice return the balance of a particular owner for a particular subToken.
    /// @param owner whose balance it is of.
    /// @param id subToken id.
    /// @return balance of the owner
    function balanceOf(address owner, uint256 id) public view returns (uint256 balance) {
        (uint256 bin, uint256 index) = id.getTokenBinIndex();
        return _packedTokenBalance[owner][bin].getValueInBin(index);
    }

    /// @notice return the balances of a list of owners / subTokens.
    /// @param owners list of addresses to which we want to know the balance.
    /// @param ids list of subTokens's addresses.
    /// @return balances list of balances for each request.
    function balanceOfBatch(address[] calldata owners, uint256[] calldata ids) external view returns (uint256[] memory balances) {
        require(owners.length == ids.length, "INVALID_INCONSISTENT_LENGTH");
        balances = new uint256[](ids.length);
        for (uint256 i = 0; i < ids.length; i++) {
            balances[i] = balanceOf(owners[i], ids[i]);
        }
    }

    /// @notice transfer a number of subToken from one address to another.
    /// @param from owner to transfer from.
    /// @param to destination address that will receive the tokens.
    /// @param id subToken id.
    /// @param value amount of tokens to transfer.
    function singleTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 value
    ) external {
        require(to != address(0), "INVALID_TO_ZERO_ADDRESS");
        ERC20SubToken erc20 = _erc20s[id];
        require(
            from == msg.sender ||
                msg.sender == address(erc20) ||
                _metaTransactionContracts[msg.sender] ||
                _superOperators[msg.sender] ||
                _operatorsForAll[from][msg.sender],
            "NOT_AUTHORIZED"
        );

        (uint256 bin, uint256 index) = id.getTokenBinIndex();
        mapping(uint256 => uint256) storage fromPack = _packedTokenBalance[from];
        mapping(uint256 => uint256) storage toPack = _packedTokenBalance[to];
        fromPack[bin] = fromPack[bin].updateTokenBalance(index, value, ObjectLib32.Operations.SUB);
        toPack[bin] = toPack[bin].updateTokenBalance(index, value, ObjectLib32.Operations.ADD);
        erc20.emitTransferEvent(from, to, value);
    }

    /// @notice transfer a number of different subTokens from one address to another.
    /// @param from owner to transfer from.
    /// @param to destination address that will receive the tokens.
    /// @param ids list of subToken ids to transfer.
    /// @param values list of amount for eacg subTokens to transfer.
    function batchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata values
    ) external {
        require(ids.length == values.length, "INVALID_INCONSISTENT_LENGTH");
        require(to != address(0), "INVALID_TO_ZERO_ADDRESS");
        require(
            from == msg.sender || _superOperators[msg.sender] || _operatorsForAll[from][msg.sender] || _metaTransactionContracts[msg.sender],
            "NOT_AUTHORIZED"
        );
        _batchTransferFrom(from, to, ids, values);
    }

    function _batchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory values
    ) internal {
        uint256 lastBin = MAX_UINT256;
        uint256 balFrom;
        uint256 balTo;
        mapping(uint256 => uint256) storage fromPack = _packedTokenBalance[from];
        mapping(uint256 => uint256) storage toPack = _packedTokenBalance[to];
        for (uint256 i = 0; i < ids.length; i++) {
            if (values[i] != 0) {
                (uint256 bin, uint256 index) = ids[i].getTokenBinIndex();
                if (lastBin == MAX_UINT256) {
                    lastBin = bin;
                    balFrom = ObjectLib32.updateTokenBalance(fromPack[bin], index, values[i], ObjectLib32.Operations.SUB);
                    balTo = ObjectLib32.updateTokenBalance(toPack[bin], index, values[i], ObjectLib32.Operations.ADD);
                } else {
                    if (bin != lastBin) {
                        fromPack[lastBin] = balFrom;
                        toPack[lastBin] = balTo;
                        balFrom = fromPack[bin];
                        balTo = toPack[bin];
                        lastBin = bin;
                    }
                    balFrom = balFrom.updateTokenBalance(index, values[i], ObjectLib32.Operations.SUB);
                    balTo = balTo.updateTokenBalance(index, values[i], ObjectLib32.Operations.ADD);
                }
                ERC20SubToken erc20 = _erc20s[ids[i]];
                erc20.emitTransferEvent(from, to, values[i]);
            }
        }
        if (lastBin != MAX_UINT256) {
            fromPack[lastBin] = balFrom;
            toPack[lastBin] = balTo;
        }
    }

    /// @notice grant or revoke the ability for an address to transfer token on behalf of another address.
    /// @param sender address granting/revoking the approval.
    /// @param operator address being granted/revoked ability to transfer.
    /// @param approved whether the operator is revoked or approved.
    function setApprovalForAllFor(
        address sender,
        address operator,
        bool approved
    ) external {
        require(msg.sender == sender || _metaTransactionContracts[msg.sender] || _superOperators[msg.sender], "NOT_AUTHORIZED");
        _setApprovalForAll(sender, operator, approved);
    }

    /// @notice grant or revoke the ability for an address to transfer token on your behalf.
    /// @param operator address being granted/revoked ability to transfer.
    /// @param approved whether the operator is revoked or approved.
    function setApprovalForAll(address operator, bool approved) external {
        _setApprovalForAll(msg.sender, operator, approved);
    }

    /// @notice return whether an oeprator has the ability to transfer on behalf of another address.
    /// @param owner address who would have granted the rights.
    /// @param operator address being given the ability to transfer.
    /// @return isOperator whether the operator has approval rigths or not.
    function isApprovedForAll(address owner, address operator) external view returns (bool isOperator) {
        return _operatorsForAll[owner][operator] || _superOperators[operator];
    }

    function isAuthorizedToTransfer(address owner, address sender) external view returns (bool) {
        return _metaTransactionContracts[sender] || _superOperators[sender] || _operatorsForAll[owner][sender];
    }

    function isAuthorizedToApprove(address sender) external view returns (bool) {
        return _metaTransactionContracts[sender] || _superOperators[sender];
    }

    function batchBurnFrom(
        address from,
        uint256[] calldata ids,
        uint256[] calldata amounts
    ) external {
        require(from != address(0), "INVALID_FROM_ZERO_ADDRESS");
        require(
            from == msg.sender || _metaTransactionContracts[msg.sender] || _superOperators[msg.sender] || _operatorsForAll[from][msg.sender],
            "NOT_AUTHORIZED"
        );

        _batchBurnFrom(from, ids, amounts);
    }

    /// @notice burn token for a specific owner and subToken.
    /// @param from fron which address the token are burned from.
    /// @param id subToken id.
    /// @param value amount of tokens to burn.
    function burnFrom(
        address from,
        uint256 id,
        uint256 value
    ) external {
        require(
            from == msg.sender || _superOperators[msg.sender] || _operatorsForAll[from][msg.sender] || _metaTransactionContracts[msg.sender],
            "NOT_AUTHORIZED"
        );
        _burn(from, id, value);
    }

    /// @notice burn token for a specific subToken.
    /// @param id subToken id.
    /// @param value amount of tokens to burn.
    function burn(uint256 id, uint256 value) external {
        _burn(msg.sender, id, value);
    }

    // ///////////////// INTERNAL //////////////////////////

    function _batchBurnFrom(
        address from,
        uint256[] memory ids,
        uint256[] memory amounts
    ) internal {
        uint256 balFrom = 0;
        uint256 supply = 0;
        uint256 lastBin = MAX_UINT256;
        mapping(uint256 => uint256) storage fromPack = _packedTokenBalance[from];
        for (uint256 i = 0; i < ids.length; i++) {
            if (amounts[i] != 0) {
                (uint256 bin, uint256 index) = ids[i].getTokenBinIndex();
                if (lastBin == MAX_UINT256) {
                    lastBin = bin;
                    balFrom = fromPack[bin].updateTokenBalance(index, amounts[i], ObjectLib32.Operations.SUB);
                    supply = _packedSupplies[bin].updateTokenBalance(index, amounts[i], ObjectLib32.Operations.SUB);
                } else {
                    if (bin != lastBin) {
                        fromPack[lastBin] = balFrom;
                        balFrom = fromPack[bin];
                        _packedSupplies[lastBin] = supply;
                        supply = _packedSupplies[bin];
                        lastBin = bin;
                    }

                    balFrom = balFrom.updateTokenBalance(index, amounts[i], ObjectLib32.Operations.SUB);
                    supply = supply.updateTokenBalance(index, amounts[i], ObjectLib32.Operations.SUB);
                }
                _erc20s[ids[i]].emitTransferEvent(from, address(0), amounts[i]);
            }
        }
        if (lastBin != MAX_UINT256) {
            fromPack[lastBin] = balFrom;
            _packedSupplies[lastBin] = supply;
        }
    }

    function _burn(
        address from,
        uint256 id,
        uint256 value
    ) internal {
        ERC20SubToken erc20 = _erc20s[id];
        (uint256 bin, uint256 index) = id.getTokenBinIndex();
        mapping(uint256 => uint256) storage fromPack = _packedTokenBalance[from];
        fromPack[bin] = ObjectLib32.updateTokenBalance(fromPack[bin], index, value, ObjectLib32.Operations.SUB);
        _packedSupplies[bin] = ObjectLib32.updateTokenBalance(_packedSupplies[bin], index, value, ObjectLib32.Operations.SUB);
        erc20.emitTransferEvent(from, address(0), value);
    }

    function _addSubToken(ERC20SubToken subToken) internal returns (uint256 id) {
        id = _erc20s.length;
        require(subToken.groupAddress() == address(this), "INVALID_GROUP");
        require(subToken.groupTokenId() == id, "INVALID_ID");
        _erc20s.push(subToken);
        emit SubToken(subToken);
    }

    function _setApprovalForAll(
        address sender,
        address operator,
        bool approved
    ) internal {
        require(!_superOperators[operator], "INVALID_SUPER_OPERATOR");
        _operatorsForAll[sender][operator] = approved;
        emit ApprovalForAll(sender, operator, approved);
    }

    function _setMinter(address minter, bool enabled) internal {
        _minters[minter] = enabled;
        emit Minter(minter, enabled);
    }

    // ///////////////// UTILITIES /////////////////////////
    using AddressUtils for address;
    using ObjectLib32 for ObjectLib32.Operations;
    using ObjectLib32 for uint256;
    using SafeMath for uint256;

    // ////////////////// DATA ///////////////////////////////
    mapping(uint256 => uint256) internal _packedSupplies;
    mapping(address => mapping(uint256 => uint256)) internal _packedTokenBalance;
    mapping(address => mapping(address => bool)) internal _operatorsForAll;
    ERC20SubToken[] internal _erc20s;
    mapping(address => bool) internal _minters;

    // ////////////// CONSTRUCTOR ////////////////////////////

    struct SubTokenData {
        string name;
        string symbol;
    }

    constructor(
        address metaTransactionContract,
        address admin,
        address initialMinter
    ) internal {
        _admin = admin;
        _setMetaTransactionProcessor(metaTransactionContract, true);
        _setMinter(initialMinter, true);
    }
}

pragma solidity 0.6.5;

import "../common/Libraries/SafeMathWithRequire.sol";
import "../common/BaseWithStorage/SuperOperators.sol";
import "../common/BaseWithStorage/MetaTransactionReceiver.sol";

import "./ERC20Group.sol";


contract ERC20SubToken {
    // TODO add natspec, currently blocked by solidity compiler issue
    event Transfer(address indexed from, address indexed to, uint256 value);

    // TODO add natspec, currently blocked by solidity compiler issue
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /// @notice A descriptive name for the tokens
    /// @return name of the tokens
    function name() public view returns (string memory) {
        return _name;
    }

    /// @notice An abbreviated name for the tokens
    /// @return symbol of the tokens
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /// @notice the tokenId in ERC20Group
    /// @return the tokenId in ERC20Group
    function groupTokenId() external view returns (uint256) {
        return _index;
    }

    /// @notice the ERC20Group address
    /// @return the address of the group
    function groupAddress() external view returns (address) {
        return address(_group);
    }

    function totalSupply() external view returns (uint256) {
        return _group.supplyOf(_index);
    }

    function balanceOf(address who) external view returns (uint256) {
        return _group.balanceOf(who, _index);
    }

    function decimals() external pure returns (uint8) {
        return uint8(0);
    }

    function transfer(address to, uint256 amount) external returns (bool success) {
        _transfer(msg.sender, to, amount);
        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool success) {
        if (msg.sender != from && !_group.isAuthorizedToTransfer(from, msg.sender)) {
            uint256 allowance = _mAllowed[from][msg.sender];
            if (allowance != ~uint256(0)) {
                // save gas when allowance is maximal by not reducing it (see https://github.com/ethereum/EIPs/issues/717)
                require(allowance >= amount, "NOT_AUTHOIZED_ALLOWANCE");
                _mAllowed[from][msg.sender] = allowance - amount;
            }
        }
        _transfer(from, to, amount);
        return true;
    }

    function approve(address spender, uint256 amount) external returns (bool success) {
        _approveFor(msg.sender, spender, amount);
        return true;
    }

    function approveFor(
        address from,
        address spender,
        uint256 amount
    ) external returns (bool success) {
        require(msg.sender == from || _group.isAuthorizedToApprove(msg.sender), "NOT_AUTHORIZED");
        _approveFor(from, spender, amount);
        return true;
    }

    function emitTransferEvent(
        address from,
        address to,
        uint256 amount
    ) external {
        require(msg.sender == address(_group), "NOT_AUTHORIZED_GROUP_ONLY");
        emit Transfer(from, to, amount);
    }

    // /////////////////// INTERNAL ////////////////////////

    function _approveFor(
        address owner,
        address spender,
        uint256 amount
    ) internal {
        require(owner != address(0) && spender != address(0), "INVALID_FROM_OR_SPENDER");
        _mAllowed[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function allowance(address owner, address spender) external view returns (uint256 remaining) {
        return _mAllowed[owner][spender];
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal {
        _group.singleTransferFrom(from, to, _index, amount);
    }

    // ///////////////////// UTILITIES ///////////////////////
    using SafeMathWithRequire for uint256;

    // //////////////////// CONSTRUCTOR /////////////////////
    constructor(
        ERC20Group group,
        uint256 index,
        string memory tokenName,
        string memory tokenSymbol
    ) public {
        _group = group;
        _index = index;
        _name = tokenName;
        _symbol = tokenSymbol;
    }

    // ////////////////////// DATA ///////////////////////////
    ERC20Group internal immutable _group;
    uint256 internal immutable _index;
    mapping(address => mapping(address => uint256)) internal _mAllowed;
    string internal _name;
    string internal _symbol;
}

pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;


interface CatalystToken {
    function getMintData(uint256 catalystId)
        external
        view
        returns (
            uint16 maxGems,
            uint16 minQuantity,
            uint16 maxQuantity,
            uint256 sandMintingFee,
            uint256 sandUpdateFee
        );

    function batchBurnFrom(
        address from,
        uint256[] calldata ids,
        uint256[] calldata amounts
    ) external;

    function burnFrom(
        address from,
        uint256 id,
        uint256 amount
    ) external;
}

pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;


interface CatalystValue {
    struct GemEvent {
        uint256[] gemIds;
        bytes32 blockHash;
    }

    function getValues(
        uint256 catalystId,
        uint256 seed,
        GemEvent[] calldata events,
        uint32 totalNumberOfGemTypes
    ) external view returns (uint32[] memory values);
}

pragma solidity 0.6.5;


interface GemToken {
    function batchBurnFrom(
        address from,
        uint256[] calldata ids,
        uint256[] calldata amounts
    ) external;
}

pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;

import "./Interfaces/AssetToken.sol";
import "./common/BaseWithStorage/Admin.sol";
import "./Catalyst/CatalystValue.sol";


contract CatalystRegistry is Admin, CatalystValue {
    event Minter(address indexed newMinter);
    event CatalystApplied(uint256 indexed assetId, uint256 indexed catalystId, uint256 seed, uint256[] gemIds, uint64 blockNumber);
    event GemsAdded(uint256 indexed assetId, uint256 seed, uint256[] gemIds, uint64 blockNumber);

    function getCatalyst(uint256 assetId) external view returns (bool exists, uint256 catalystId) {
        CatalystStored memory catalyst = _catalysts[assetId];
        if (catalyst.set != 0) {
            return (true, catalyst.catalystId);
        }
        if (assetId & IS_NFT != 0) {
            catalyst = _catalysts[_getCollectionId(assetId)];
            return (catalyst.set != 0, catalyst.catalystId);
        }
        return (false, 0);
    }

    function setCatalyst(
        uint256 assetId,
        uint256 catalystId,
        uint256 maxGems,
        uint256[] calldata gemIds
    ) external {
        require(msg.sender == _minter, "NOT_AUTHORIZED_MINTER");
        require(gemIds.length <= maxGems, "INVALID_GEMS_TOO_MANY");
        uint256 emptySockets = maxGems - gemIds.length;
        _catalysts[assetId] = CatalystStored(uint64(emptySockets), uint64(catalystId), 1);
        uint64 blockNumber = _getBlockNumber();
        emit CatalystApplied(assetId, catalystId, assetId, gemIds, blockNumber);
    }

    function addGems(uint256 assetId, uint256[] calldata gemIds) external {
        require(msg.sender == _minter, "NOT_AUTHORIZED_MINTER");
        require(assetId & IS_NFT != 0, "INVALID_NOT_NFT");
        require(gemIds.length != 0, "INVALID_GEMS_0");
        (uint256 emptySockets, uint256 seed) = _getSocketData(assetId);
        require(emptySockets >= gemIds.length, "INVALID_GEMS_TOO_MANY");
        emptySockets -= gemIds.length;
        _catalysts[assetId].emptySockets = uint64(emptySockets);
        uint64 blockNumber = _getBlockNumber();
        emit GemsAdded(assetId, seed, gemIds, blockNumber);
    }

    /// @dev Set the Minter that will be the only address able to create Estate
    /// @param minter address of the minter
    function setMinter(address minter) external {
        require(msg.sender == _admin, "NOT_AUTHORIZED_ADMIN");
        require(minter != _minter, "INVALID_MINTER_SAME_ALREADY_SET");
        _minter = minter;
        emit Minter(minter);
    }

    /// @dev return the current minter
    function getMinter() external view returns (address) {
        return _minter;
    }

    function getValues(
        uint256 catalystId,
        uint256 seed,
        GemEvent[] calldata events,
        uint32 totalNumberOfGemTypes
    ) external override view returns (uint32[] memory values) {
        return _catalystValue.getValues(catalystId, seed, events, totalNumberOfGemTypes);
    }

    // ///////// INTERNAL ////////////

    uint256 private constant IS_NFT = 0x0000000000000000000000000000000000000000800000000000000000000000;
    uint256 private constant NOT_IS_NFT = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFFFFFFFFFFFFFF;
    uint256 private constant NOT_NFT_INDEX = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF800000007FFFFFFFFFFFFFFF;

    function _getSocketData(uint256 assetId) internal view returns (uint256 emptySockets, uint256 seed) {
        seed = assetId;
        CatalystStored memory catalyst = _catalysts[assetId];
        if (catalyst.set != 0) {
            // the gems are added to an asset who already get a specific catalyst.
            // the seed is its id
            return (catalyst.emptySockets, seed);
        }
        // else the asset is only adding gems while keeping the same seed (that of the original assetId)
        seed = _getCollectionId(assetId);
        catalyst = _catalysts[seed];
        return (catalyst.emptySockets, seed);
    }

    function _getBlockNumber() internal view returns (uint64 blockNumber) {
        blockNumber = uint64(block.number + 1);
    }

    function _getCollectionId(uint256 assetId) internal pure returns (uint256) {
        return assetId & NOT_NFT_INDEX & NOT_IS_NFT; // compute the same as Asset to get collectionId
    }

    // CONSTRUCTOR ////
    constructor(CatalystValue catalystValue, address admin) public {
        _admin = admin;
        _catalystValue = catalystValue;
    }

    /// DATA ////////

    struct CatalystStored {
        uint64 emptySockets;
        uint64 catalystId;
        uint64 set;
    }
    address internal _minter;
    CatalystValue internal immutable _catalystValue;
    mapping(uint256 => CatalystStored) internal _catalysts;
}

pragma solidity 0.6.5;


interface AssetToken {
    function mint(
        address creator,
        uint40 packId,
        bytes32 hash,
        uint256 supply,
        uint8 rarity,
        address owner,
        bytes calldata data
    ) external returns (uint256 id);

    function mintMultiple(
        address creator,
        uint40 packId,
        bytes32 hash,
        uint256[] calldata supplies,
        bytes calldata rarityPack,
        address owner,
        bytes calldata data
    ) external returns (uint256[] memory ids);

    // fails on non-NFT or nft who do not have collection (was a mistake)
    function collectionOf(uint256 id) external view returns (uint256);

    function balanceOf(address owner, uint256 id) external view returns (uint256);

    // return true for Non-NFT ERC1155 tokens which exists
    function isCollection(uint256 id) external view returns (bool);

    function collectionIndexOf(uint256 id) external view returns (uint256);

    function extractERC721From(
        address sender,
        uint256 id,
        address to
    ) external returns (uint256 newId);

    function transferFrom(
        address from,
        address to,
        uint256 id
    ) external;

    function safeTransferFrom(
        address from,
        address to,
        uint256 id
    ) external;

    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 value,
        bytes calldata data
    ) external;

    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        bytes calldata data
    ) external;

    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata values,
        bytes calldata data
    ) external;
}

pragma solidity 0.6.5;

import "../common/Interfaces/ERC20.sol";


interface ERC20Extended is ERC20 {
    function burnFor(address from, uint256 amount) external;

    function burn(uint256 amount) external;

    function approveFor(
        address owner,
        address spender,
        uint256 amount
    ) external returns (bool success);
}

pragma solidity 0.6.5;


contract Admin {
    address internal _admin;

    /// @dev emitted when the contract administrator is changed.
    /// @param oldAdmin address of the previous administrator.
    /// @param newAdmin address of the new administrator.
    event AdminChanged(address oldAdmin, address newAdmin);

    /// @dev gives the current administrator of this contract.
    /// @return the current administrator of this contract.
    function getAdmin() external view returns (address) {
        return _admin;
    }

    /// @dev change the administrator to be `newAdmin`.
    /// @param newAdmin address of the new administrator.
    function changeAdmin(address newAdmin) external {
        require(msg.sender == _admin, "only admin can change admin");
        emit AdminChanged(_admin, newAdmin);
        _admin = newAdmin;
    }

    modifier onlyAdmin() {
        require(msg.sender == _admin, "only admin allowed");
        _;
    }
}

pragma solidity 0.6.5;

import "./Admin.sol";


contract MetaTransactionReceiver is Admin {
    mapping(address => bool) internal _metaTransactionContracts;

    /// @dev emiited when a meta transaction processor is enabled/disabled
    /// @param metaTransactionProcessor address that will be given/removed metaTransactionProcessor rights.
    /// @param enabled set whether the metaTransactionProcessor is enabled or disabled.
    event MetaTransactionProcessor(address metaTransactionProcessor, bool enabled);

    /// @dev Enable or disable the ability of `metaTransactionProcessor` to perform meta-tx (metaTransactionProcessor rights).
    /// @param metaTransactionProcessor address that will be given/removed metaTransactionProcessor rights.
    /// @param enabled set whether the metaTransactionProcessor is enabled or disabled.
    function setMetaTransactionProcessor(address metaTransactionProcessor, bool enabled) public {
        require(msg.sender == _admin, "only admin can setup metaTransactionProcessors");
        _setMetaTransactionProcessor(metaTransactionProcessor, enabled);
    }

    function _setMetaTransactionProcessor(address metaTransactionProcessor, bool enabled) internal {
        _metaTransactionContracts[metaTransactionProcessor] = enabled;
        emit MetaTransactionProcessor(metaTransactionProcessor, enabled);
    }

    /// @dev check whether address `who` is given meta-transaction execution rights.
    /// @param who The address to query.
    /// @return whether the address has meta-transaction execution rights.
    function isMetaTransactionProcessor(address who) external view returns (bool) {
        return _metaTransactionContracts[who];
    }
}

pragma solidity 0.6.5;

import "./Admin.sol";


contract SuperOperators is Admin {
    mapping(address => bool) internal _superOperators;

    event SuperOperator(address superOperator, bool enabled);

    /// @notice Enable or disable the ability of `superOperator` to transfer tokens of all (superOperator rights).
    /// @param superOperator address that will be given/removed superOperator right.
    /// @param enabled set whether the superOperator is enabled or disabled.
    function setSuperOperator(address superOperator, bool enabled) external {
        require(msg.sender == _admin, "only admin is allowed to add super operators");
        _superOperators[superOperator] = enabled;
        emit SuperOperator(superOperator, enabled);
    }

    /// @notice check whether address `who` is given superOperator rights.
    /// @param who The address to query.
    /// @return whether the address has superOperator rights.
    function isSuperOperator(address who) public view returns (bool) {
        return _superOperators[who];
    }
}

pragma solidity 0.6.5;


/// @dev see https://eips.ethereum.org/EIPS/eip-20
interface ERC20 {
    /// @notice emitted when tokens are transfered from one address to another.
    /// @param from address from which the token are transfered from (zero means tokens are minted).
    /// @param to destination address which the token are transfered to (zero means tokens are burnt).
    /// @param value amount of tokens transferred.
    event Transfer(address indexed from, address indexed to, uint256 value);

    /// @notice emitted when owner grant transfer rights to another address
    /// @param owner address allowing its token to be transferred.
    /// @param spender address allowed to spend on behalf of `owner`
    /// @param value amount of tokens allowed.
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /// @notice return the current total amount of tokens owned by all holders.
    /// @return supply total number of tokens held.
    function totalSupply() external view returns (uint256 supply);

    /// @notice return the number of tokens held by a particular address.
    /// @param who address being queried.
    /// @return balance number of token held by that address.
    function balanceOf(address who) external view returns (uint256 balance);

    /// @notice transfer tokens to a specific address.
    /// @param to destination address receiving the tokens.
    /// @param value number of tokens to transfer.
    /// @return success whether the transfer succeeded.
    function transfer(address to, uint256 value) external returns (bool success);

    /// @notice transfer tokens from one address to another.
    /// @param from address tokens will be sent from.
    /// @param to destination address receiving the tokens.
    /// @param value number of tokens to transfer.
    /// @return success whether the transfer succeeded.
    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool success);

    /// @notice approve an address to spend on your behalf.
    /// @param spender address entitled to transfer on your behalf.
    /// @param value amount allowed to be transfered.
    /// @param success whether the approval succeeded.
    function approve(address spender, uint256 value) external returns (bool success);

    /// @notice return the current allowance for a particular owner/spender pair.
    /// @param owner address allowing spender.
    /// @param spender address allowed to spend.
    /// @return amount number of tokens `spender` can spend on behalf of `owner`.
    function allowance(address owner, address spender) external view returns (uint256 amount);
}

pragma solidity 0.6.5;


library AddressUtils {
    function toPayable(address _address) internal pure returns (address payable _payable) {
        return address(uint160(_address));
    }

    function isContract(address addr) internal view returns (bool) {
        // for accounts without code, i.e. `keccak256('')`:
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;

        bytes32 codehash;
        // solium-disable-next-line security/no-inline-assembly
        assembly {
            codehash := extcodehash(addr)
        }
        return (codehash != 0x0 && codehash != accountHash);
    }
}

pragma solidity 0.6.5;


library BytesUtil {
    function memcpy(
        uint256 dest,
        uint256 src,
        uint256 len
    ) internal pure {
        // Copy word-length chunks while possible
        for (; len >= 32; len -= 32) {
            assembly {
                mstore(dest, mload(src))
            }
            dest += 32;
            src += 32;
        }

        // Copy remaining bytes
        uint256 mask = 256**(32 - len) - 1;
        assembly {
            let srcpart := and(mload(src), not(mask))
            let destpart := and(mload(dest), mask)
            mstore(dest, or(destpart, srcpart))
        }
    }

    function pointerToBytes(uint256 src, uint256 len) internal pure returns (bytes memory) {
        bytes memory ret = new bytes(len);
        uint256 retptr;
        assembly {
            retptr := add(ret, 32)
        }

        memcpy(retptr, src, len);
        return ret;
    }

    function addressToBytes(address a) internal pure returns (bytes memory b) {
        assembly {
            let m := mload(0x40)
            mstore(add(m, 20), xor(0x140000000000000000000000000000000000000000, a))
            mstore(0x40, add(m, 52))
            b := m
        }
    }

    function uint256ToBytes(uint256 a) internal pure returns (bytes memory b) {
        assembly {
            let m := mload(0x40)
            mstore(add(m, 32), a)
            mstore(0x40, add(m, 64))
            b := m
        }
    }

    function doFirstParamEqualsAddress(bytes memory data, address _address) internal pure returns (bool) {
        if (data.length < (36 + 32)) {
            return false;
        }
        uint256 value;
        assembly {
            value := mload(add(data, 36))
        }
        return value == uint256(_address);
    }

    function doParamEqualsUInt256(
        bytes memory data,
        uint256 i,
        uint256 value
    ) internal pure returns (bool) {
        if (data.length < (36 + (i + 1) * 32)) {
            return false;
        }
        uint256 offset = 36 + i * 32;
        uint256 valuePresent;
        assembly {
            valuePresent := mload(add(data, offset))
        }
        return valuePresent == value;
    }

    function overrideFirst32BytesWithAddress(bytes memory data, address _address) internal pure returns (bytes memory) {
        uint256 dest;
        assembly {
            dest := add(data, 48)
        } // 48 = 32 (offset) + 4 (func sig) + 12 (address is only 20 bytes)

        bytes memory addressBytes = addressToBytes(_address);
        uint256 src;
        assembly {
            src := add(addressBytes, 32)
        }

        memcpy(dest, src, 20);
        return data;
    }

    function overrideFirstTwo32BytesWithAddressAndInt(
        bytes memory data,
        address _address,
        uint256 _value
    ) internal pure returns (bytes memory) {
        uint256 dest;
        uint256 src;

        assembly {
            dest := add(data, 48)
        } // 48 = 32 (offset) + 4 (func sig) + 12 (address is only 20 bytes)
        bytes memory bbytes = addressToBytes(_address);
        assembly {
            src := add(bbytes, 32)
        }
        memcpy(dest, src, 20);

        assembly {
            dest := add(data, 68)
        } // 48 = 32 (offset) + 4 (func sig) + 32 (next slot)
        bbytes = uint256ToBytes(_value);
        assembly {
            src := add(bbytes, 32)
        }
        memcpy(dest, src, 32);

        return data;
    }
}

pragma solidity 0.6.5;

import "./SafeMathWithRequire.sol";


library ObjectLib32 {
    using SafeMathWithRequire for uint256;
    enum Operations {ADD, SUB, REPLACE}
    // Constants regarding bin or chunk sizes for balance packing
    uint256 constant TYPES_BITS_SIZE = 32; // Max size of each object
    uint256 constant TYPES_PER_UINT256 = 256 / TYPES_BITS_SIZE; // Number of types per uint256

    //
    // Objects and Tokens Functions
    //

    /**
     * @dev Return the bin number and index within that bin where ID is
     * @param tokenId Object type
     * @return bin Bin number
     * @return index ID's index within that bin
     */
    function getTokenBinIndex(uint256 tokenId) internal pure returns (uint256 bin, uint256 index) {
        bin = (tokenId * TYPES_BITS_SIZE) / 256;
        index = tokenId % TYPES_PER_UINT256;
        return (bin, index);
    }

    /**
     * @dev update the balance of a type provided in binBalances
     * @param binBalances Uint256 containing the balances of objects
     * @param index Index of the object in the provided bin
     * @param amount Value to update the type balance
     * @param operation Which operation to conduct :
     *     Operations.REPLACE : Replace type balance with amount
     *     Operations.ADD     : ADD amount to type balance
     *     Operations.SUB     : Substract amount from type balance
     */
    function updateTokenBalance(
        uint256 binBalances,
        uint256 index,
        uint256 amount,
        Operations operation
    ) internal pure returns (uint256 newBinBalance) {
        uint256 objectBalance = 0;
        if (operation == Operations.ADD) {
            objectBalance = getValueInBin(binBalances, index);
            newBinBalance = writeValueInBin(binBalances, index, objectBalance.add(amount));
        } else if (operation == Operations.SUB) {
            objectBalance = getValueInBin(binBalances, index);
            require(objectBalance >= amount, "can't substract more than there is");
            newBinBalance = writeValueInBin(binBalances, index, objectBalance.sub(amount));
        } else if (operation == Operations.REPLACE) {
            newBinBalance = writeValueInBin(binBalances, index, amount);
        } else {
            revert("Invalid operation"); // Bad operation
        }

        return newBinBalance;
    }

    /*
     * @dev return value in binValue at position index
     * @param binValue uint256 containing the balances of TYPES_PER_UINT256 types
     * @param index index at which to retrieve value
     * @return Value at given index in bin
     */
    function getValueInBin(uint256 binValue, uint256 index) internal pure returns (uint256) {
        // Mask to retrieve data for a given binData
        uint256 mask = (uint256(1) << TYPES_BITS_SIZE) - 1;

        // Shift amount
        uint256 rightShift = 256 - TYPES_BITS_SIZE * (index + 1);
        return (binValue >> rightShift) & mask;
    }

    /**
     * @dev return the updated binValue after writing amount at index
     * @param binValue uint256 containing the balances of TYPES_PER_UINT256 types
     * @param index Index at which to retrieve value
     * @param amount Value to store at index in bin
     * @return Value at given index in bin
     */
    function writeValueInBin(
        uint256 binValue,
        uint256 index,
        uint256 amount
    ) internal pure returns (uint256) {
        require(amount < 2**TYPES_BITS_SIZE, "Amount to write in bin is too large");

        // Mask to retrieve data for a given binData
        uint256 mask = (uint256(1) << TYPES_BITS_SIZE) - 1;

        // Shift amount
        uint256 leftShift = 256 - TYPES_BITS_SIZE * (index + 1);
        return (binValue & ~(mask << leftShift)) | (amount << leftShift);
    }
}

pragma solidity 0.6.5;


/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
    /**
     * @dev Multiplies two numbers, throws on overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
        // Gas optimization: this is cheaper than asserting 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (a == 0) {
            return 0;
        }

        c = a * b;
        assert(c / a == b);
        return c;
    }

    /**
     * @dev Integer division of two numbers, truncating the quotient.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // assert(b > 0); // Solidity automatically throws when dividing by 0
        // uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
        return a / b;
    }

    /**
     * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        assert(b <= a);
        return a - b;
    }

    /**
     * @dev Adds two numbers, throws on overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
        c = a + b;
        assert(c >= a);
        return c;
    }
}

pragma solidity 0.6.5;


/**
 * @title SafeMath
 * @dev Math operations with safety checks that revert
 */
library SafeMathWithRequire {
    using SafeMathWithRequire for uint256;

    uint256 constant DECIMALS_18 = 1000000000000000000;
    uint256 constant DECIMALS_12 = 1000000000000;
    uint256 constant DECIMALS_9 = 1000000000;
    uint256 constant DECIMALS_6 = 1000000;

    /**
     * @dev Multiplies two numbers, throws on overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
        // Gas optimization: this is cheaper than asserting 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
        if (a == 0) {
            return 0;
        }

        c = a * b;
        require(c / a == b, "overflow");
        return c;
    }

    /**
     * @dev Integer division of two numbers, truncating the quotient.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b != 0, "divbyzero");
        // uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
        return a / b;
    }

    /**
     * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "undeflow");
        return a - b;
    }

    /**
     * @dev Adds two numbers, throws on overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
        c = a + b;
        require(c >= a, "overflow");
        return c;
    }

    function sqrt6(uint256 a) internal pure returns (uint256 c) {
        a = a.mul(DECIMALS_12);
        uint256 tmp = a.add(1) / 2;
        c = a;
        // tmp cannot be zero unless a = 0 which skip the loop
        while (tmp < c) {
            c = tmp;
            tmp = ((a / tmp) + tmp) / 2;
        }
    }

    function sqrt3(uint256 a) internal pure returns (uint256 c) {
        a = a.mul(DECIMALS_6);
        uint256 tmp = a.add(1) / 2;
        c = a;
        // tmp cannot be zero unless a = 0 which skip the loop
        while (tmp < c) {
            c = tmp;
            tmp = ((a / tmp) + tmp) / 2;
        }
    }

    function cbrt6(uint256 a) internal pure returns (uint256 c) {
        a = a.mul(DECIMALS_18);
        uint256 tmp = a.add(2) / 3;
        c = a;
        // tmp cannot be zero unless a = 0 which skip the loop
        while (tmp < c) {
            c = tmp;
            uint256 tmpSquare = tmp**2;
            require(tmpSquare > tmp, "overflow");
            tmp = ((a / tmpSquare) + (tmp * 2)) / 3;
        }
        return c;
    }

    function cbrt3(uint256 a) internal pure returns (uint256 c) {
        a = a.mul(DECIMALS_9);
        uint256 tmp = a.add(2) / 3;
        c = a;
        // tmp cannot be zero unless a = 0 which skip the loop
        while (tmp < c) {
            c = tmp;
            uint256 tmpSquare = tmp**2;
            require(tmpSquare > tmp, "overflow");
            tmp = ((a / tmpSquare) + (tmp * 2)) / 3;
        }
        return c;
    }

    // TODO test
    function rt6_3(uint256 a) internal pure returns (uint256 c) {
        a = a.mul(DECIMALS_18);
        uint256 tmp = a.add(5) / 6;
        c = a;
        // tmp cannot be zero unless a = 0 which skip the loop
        while (tmp < c) {
            c = tmp;
            uint256 tmpFive = tmp**5;
            require(tmpFive > tmp, "overflow");
            tmp = ((a / tmpFive) + (tmp * 5)) / 6;
        }
    }
}

{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 2000
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract CatalystRegistry","name":"catalystRegistry","type":"address"},{"internalType":"contract ERC20Extended","name":"sand","type":"address"},{"internalType":"contract AssetToken","name":"asset","type":"address"},{"internalType":"contract GemToken","name":"gems","type":"address"},{"internalType":"address","name":"metaTx","type":"address"},{"internalType":"address","name":"admin","type":"address"},{"internalType":"address","name":"feeCollector","type":"address"},{"internalType":"uint256","name":"gemAdditionFee","type":"uint256"},{"internalType":"contract CatalystToken","name":"catalysts","type":"address"},{"internalType":"uint256[4]","name":"bakedInMintdata","type":"uint256[4]"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newCollector","type":"address"}],"name":"FeeCollector","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newFee","type":"uint256"}],"name":"GemAdditionFee","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"metaTransactionProcessor","type":"address"},{"indexed":false,"internalType":"bool","name":"enabled","type":"bool"}],"name":"MetaTransactionProcessor","type":"event"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"assetId","type":"uint256"},{"internalType":"uint256[]","name":"gemIds","type":"uint256[]"},{"internalType":"address","name":"to","type":"address"}],"name":"addGems","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"assetId","type":"uint256"},{"internalType":"uint256","name":"catalystId","type":"uint256"},{"internalType":"uint256[]","name":"gemIds","type":"uint256[]"},{"internalType":"address","name":"to","type":"address"}],"name":"changeCatalyst","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"assetId","type":"uint256"},{"internalType":"uint256[]","name":"gemIds","type":"uint256[]"},{"internalType":"address","name":"to","type":"address"}],"name":"extractAndAddGems","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"assetId","type":"uint256"},{"internalType":"uint256","name":"catalystId","type":"uint256"},{"internalType":"uint256[]","name":"gemIds","type":"uint256[]"},{"internalType":"address","name":"to","type":"address"}],"name":"extractAndChangeCatalyst","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getAdmin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"who","type":"address"}],"name":"isMetaTransactionProcessor","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint40","name":"packId","type":"uint40"},{"internalType":"bytes32","name":"metadataHash","type":"bytes32"},{"internalType":"uint256","name":"catalystId","type":"uint256"},{"internalType":"uint256[]","name":"gemIds","type":"uint256[]"},{"internalType":"uint256","name":"quantity","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"mint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint40","name":"packId","type":"uint40"},{"internalType":"bytes32","name":"metadataHash","type":"bytes32"},{"internalType":"uint256[]","name":"gemsQuantities","type":"uint256[]"},{"internalType":"uint256[]","name":"catalystsQuantities","type":"uint256[]"},{"components":[{"internalType":"uint256[]","name":"gemIds","type":"uint256[]"},{"internalType":"uint256","name":"quantity","type":"uint256"},{"internalType":"uint256","name":"catalystId","type":"uint256"}],"internalType":"struct CatalystMinter.AssetData[]","name":"assets","type":"tuple[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"mintMultiple","outputs":[{"internalType":"uint256[]","name":"ids","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newCollector","type":"address"}],"name":"setFeeCollector","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newFee","type":"uint256"}],"name":"setGemAdditionFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"metaTransactionProcessor","type":"address"},{"internalType":"bool","name":"enabled","type":"bool"}],"name":"setMetaTransactionProcessor","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

-----Decoded View---------------
Arg [0] : catalystRegistry (address): 0xeFa52F2F24A82fA27FAAe3c1eC3cCa52806d1aa7
Arg [1] : sand (address): 0x3845badAde8e6dFF049820680d1F14bD3903a5d0
Arg [2] : asset (address): 0xa342f5D851E866E18ff98F351f2c6637f4478dB5
Arg [3] : gems (address): 0x8Ff2611dA386de427fC96A8073963619c5851Ba5
Arg [4] : metaTx (address): 0x3845badAde8e6dFF049820680d1F14bD3903a5d0
Arg [5] : admin (address): 0xEAA0993E1d21c2103e4f172a20D29371FbAF6D06
Arg [6] : feeCollector (address): 0x0000000000000000000000000000000000000000
Arg [7] : gemAdditionFee (uint256): 1000000000000000000
Arg [8] : catalysts (address): 0x2fC246149B4B8d7bcEF6188A10AF1791380227f1
Arg [9] : bakedInMintdata (uint256[4]): 1766900984260342492861813320019266132353300605199124649858173442675965952,3533748049038726826432794808116932266892205682915777338979779643968585728,5300595113817111163991460283569346020142531941473463759101385845261205504,7067442178595495746128076983446280387693357291614552347222992046553825280

-----Encoded View---------------
13 Constructor Arguments found :
Arg [0] : 000000000000000000000000efa52f2f24a82fa27faae3c1ec3cca52806d1aa7
Arg [1] : 0000000000000000000000003845badade8e6dff049820680d1f14bd3903a5d0
Arg [2] : 000000000000000000000000a342f5d851e866e18ff98f351f2c6637f4478db5
Arg [3] : 0000000000000000000000008ff2611da386de427fc96a8073963619c5851ba5
Arg [4] : 0000000000000000000000003845badade8e6dff049820680d1f14bd3903a5d0
Arg [5] : 000000000000000000000000eaa0993e1d21c2103e4f172a20d29371fbaf6d06
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000de0b6b3a7640000
Arg [8] : 0000000000000000000000002fc246149b4b8d7bcef6188a10af1791380227f1
Arg [9] : 00010001ffff0000000de0b6b3a7640000000000000000000de0b6b3a7640000
Arg [10] : 00020001ffff0000003782dace9d900000000000000000003782dace9d900000
Arg [11] : 00030001ffff0000008ac7230489e80000000000000000008ac7230489e80000
Arg [12] : 00040001ffff00000ad78ebc5ac62000000000000000000ad78ebc5ac6200000