Sandbox's LANDs

0x50f5474724e0ee42d9a4e711ccfb275809fd6d4a

getAdmin keyboard_arrow_up

    function getAdmin() external view returns (address) {
        return _admin;
    }

changeAdmin keyboard_arrow_up

    function changeAdmin(address newAdmin) external {
        require(msg.sender == _admin, "only admin can change admin");
        emit AdminChanged(_admin, newAdmin);
        _admin = newAdmin;
    }

setMetaTransactionProcessor keyboard_arrow_up

    function setMetaTransactionProcessor(address metaTransactionProcessor, bool enabled) public {
        require(
            msg.sender == _admin,
            "only admin can setup metaTransactionProcessors"
        );
        _setMetaTransactionProcessor(metaTransactionProcessor, enabled);
    }

isMetaTransactionProcessor keyboard_arrow_up

    function isMetaTransactionProcessor(address who) external view returns(bool) {
        return _metaTransactionContracts[who];
    }

setSuperOperator keyboard_arrow_up

    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);
    }

isSuperOperator keyboard_arrow_up

    function isSuperOperator(address who) public view returns (bool) {
        return _superOperators[who];
    }

balanceOf keyboard_arrow_up

    function balanceOf(address owner) external view returns (uint256) {
        require(owner != address(0), "owner is zero address");
        return _numNFTPerAddress[owner];
    }

ownerOf keyboard_arrow_up

    function ownerOf(uint256 id) external view returns (address owner) {
        owner = _ownerOf(id);
        require(owner != address(0), "token does not exist");
    }

approveFor keyboard_arrow_up

    function approveFor(
        address sender,
        address operator,
        uint256 id
    ) external {
        address owner = _ownerOf(id);
        require(sender != address(0), "sender is zero address");
        require(
            msg.sender == sender ||
            _metaTransactionContracts[msg.sender] ||
            _superOperators[msg.sender] ||
            _operatorsForAll[sender][msg.sender],
            "not authorized to approve"
        );
        require(owner == sender, "owner != sender");
        _approveFor(owner, operator, id);
    }

approve keyboard_arrow_up

    function approve(address operator, uint256 id) external {
        address owner = _ownerOf(id);
        require(owner != address(0), "token does not exist");
        require(
            owner == msg.sender ||
            _superOperators[msg.sender] ||
            _operatorsForAll[owner][msg.sender],
            "not authorized to approve"
        );
        _approveFor(owner, operator, id);
    }

getApproved keyboard_arrow_up

    function getApproved(uint256 id) external view returns (address) {
        (address owner, bool operatorEnabled) = _ownerAndOperatorEnabledOf(id);
        require(owner != address(0), "token does not exist");
        if (operatorEnabled) {
            return _operators[id];
        } else {
            return address(0);
        }
    }

transferFrom keyboard_arrow_up

    function transferFrom(address from, address to, uint256 id) external {
        bool metaTx = _checkTransfer(from, to, id);
        _transferFrom(from, to, id);
        if (to.isContract() && _checkInterfaceWith10000Gas(to, ERC721_MANDATORY_RECEIVER)) {
            require(
                _checkOnERC721Received(metaTx ? from : msg.sender, from, to, id, ""),
                "erc721 transfer rejected by to"
            );
        }
    }

safeTransferFrom keyboard_arrow_up

    function safeTransferFrom(address from, address to, uint256 id, bytes memory data) public {
        bool metaTx = _checkTransfer(from, to, id);
        _transferFrom(from, to, id);
        if (to.isContract()) {
            require(
                _checkOnERC721Received(metaTx ? from : msg.sender, from, to, id, data),
                "ERC721: transfer rejected by to"
            );
        }
    }

safeTransferFrom keyboard_arrow_up

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

batchTransferFrom keyboard_arrow_up

    function batchTransferFrom(address from, address to, uint256[] calldata ids, bytes calldata data) external {
        _batchTransferFrom(from, to, ids, data, false);
    }

safeBatchTransferFrom keyboard_arrow_up

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

supportsInterface keyboard_arrow_up

    function supportsInterface(bytes4 id) external pure returns (bool) {
        return id == 0x01ffc9a7 || id == 0x80ac58cd || id == 0x5b5e139f;
    }

setApprovalForAllFor keyboard_arrow_up

    function setApprovalForAllFor(
        address sender,
        address operator,
        bool approved
    ) external {
        require(sender != address(0), "Invalid sender address");
        require(
            msg.sender == sender ||
            _metaTransactionContracts[msg.sender] ||
            _superOperators[msg.sender],
            "not authorized to approve for all"
        );

        _setApprovalForAll(sender, operator, approved);
    }

setApprovalForAll keyboard_arrow_up

    function setApprovalForAll(address operator, bool approved) external {
        _setApprovalForAll(msg.sender, operator, approved);
    }

isApprovedForAll keyboard_arrow_up

    function isApprovedForAll(address owner, address operator)
        external
        view
        returns (bool isOperator)
    {
        return _operatorsForAll[owner][operator] || _superOperators[operator];
    }

_burn keyboard_arrow_up

    function _burn(address from, address owner, uint256 id) public {
        require(from == owner, "not owner");
        _owners[id] = 2**160; // cannot mint it again
        _numNFTPerAddress[from]--;
        emit Transfer(from, address(0), id);
    }

burn keyboard_arrow_up

    function burn(uint256 id) external {
        _burn(msg.sender, _ownerOf(id), id);
    }

burnFrom keyboard_arrow_up

    function burnFrom(address from, uint256 id) external {
        require(from != address(0), "Invalid sender address");
        (address owner, bool operatorEnabled) = _ownerAndOperatorEnabledOf(id);
        require(
            msg.sender == from ||
            _metaTransactionContracts[msg.sender] ||
            (operatorEnabled && _operators[id] == msg.sender) ||
            _superOperators[msg.sender] ||
            _operatorsForAll[from][msg.sender],
            "not authorized to burn"
        );
        _burn(from, owner, id);
    }

setMinter keyboard_arrow_up

    function setMinter(address minter, bool enabled) external {
        require(
            msg.sender == _admin,
            "only admin is allowed to add minters"
        );
        _minters[minter] = enabled;
        emit Minter(minter, enabled);
    }

isMinter keyboard_arrow_up

    function isMinter(address who) public view returns (bool) {
        return _minters[who];
    }

width keyboard_arrow_up

    function width() external returns(uint256) {
        return GRID_SIZE;
    }

height keyboard_arrow_up

    function height() external returns(uint256) {
        return GRID_SIZE;
    }

x keyboard_arrow_up

    function x(uint256 id) external returns(uint256) {
        require(_ownerOf(id) != address(0), "token does not exist");
        return id % GRID_SIZE;
    }

y keyboard_arrow_up

    function y(uint256 id) external returns(uint256) {
        require(_ownerOf(id) != address(0), "token does not exist");
        return id / GRID_SIZE;
    }

mintQuad keyboard_arrow_up

    function mintQuad(address to, uint256 size, uint256 x, uint256 y, bytes calldata data) external {
        require(to != address(0), "to is zero address");
        require(
            isMinter(msg.sender),
            "Only a minter can mint"
        );
        require(x % size == 0 && y % size == 0, "Invalid coordinates");
        require(x <= GRID_SIZE - size && y <= GRID_SIZE - size, "Out of bounds");

        uint256 quadId;
        uint256 id = x + y * GRID_SIZE;

        if (size == 1) {
            quadId = id;
        } else if (size == 3) {
            quadId = LAYER_3x3 + id;
        } else if (size == 6) {
            quadId = LAYER_6x6 + id;
        } else if (size == 12) {
            quadId = LAYER_12x12 + id;
        } else if (size == 24) {
            quadId = LAYER_24x24 + id;
        } else {
            require(false, "Invalid size");
        }

        require(_owners[LAYER_24x24 + (x/24) * 24 + ((y/24) * 24) * GRID_SIZE] == 0, "Already minted as 24x24");

        uint256 toX = x+size;
        uint256 toY = y+size;
        if (size <= 12) {
            require(
                _owners[LAYER_12x12 + (x/12) * 12 + ((y/12) * 12) * GRID_SIZE] == 0,
                "Already minted as 12x12"
            );
        } else {
            for (uint256 x12i = x; x12i < toX; x12i += 12) {
                for (uint256 y12i = y; y12i < toY; y12i += 12) {
                    uint256 id12x12 = LAYER_12x12 + x12i + y12i * GRID_SIZE;
                    require(_owners[id12x12] == 0, "Already minted as 12x12");
                }
            }
        }

        if (size <= 6) {
            require(_owners[LAYER_6x6 + (x/6) * 6 + ((y/6) * 6) * GRID_SIZE] == 0, "Already minted as 6x6");
        } else {
            for (uint256 x6i = x; x6i < toX; x6i += 6) {
                for (uint256 y6i = y; y6i < toY; y6i += 6) {
                    uint256 id6x6 = LAYER_6x6 + x6i + y6i * GRID_SIZE;
                    require(_owners[id6x6] == 0, "Already minted as 6x6");
                }
            }
        }

        if (size <= 3) {
            require(_owners[LAYER_3x3 + (x/3) * 3 + ((y/3) * 3) * GRID_SIZE] == 0, "Already minted as 3x3");
        } else {
            for (uint256 x3i = x; x3i < toX; x3i += 3) {
                for (uint256 y3i = y; y3i < toY; y3i += 3) {
                    uint256 id3x3 = LAYER_3x3 + x3i + y3i * GRID_SIZE;
                    require(_owners[id3x3] == 0, "Already minted as 3x3");
                }
            }
        }

        for (uint256 i = 0; i < size*size; i++) {
            uint256 id = _idInPath(i, size, x, y);
            require(_owners[id] == 0, "Already minted");
            emit Transfer(address(0), to, id);
        }

        _owners[quadId] = uint256(to);
        _numNFTPerAddress[to] += size * size;

        _checkBatchReceiverAcceptQuad(msg.sender, address(0), to, size, x, y, data);
    }

transferQuad keyboard_arrow_up

    function transferQuad(address from, address to, uint256 size, uint256 x, uint256 y, bytes calldata data) external {
        require(from != address(0), "from is zero address");
        require(to != address(0), "can't send to zero address");
        bool metaTx = msg.sender != from && _metaTransactionContracts[msg.sender];
        if (msg.sender != from && !metaTx) {
            require(
                _superOperators[msg.sender] ||
                _operatorsForAll[from][msg.sender],
                "not authorized to transferQuad"
            );
        }
        _transferQuad(from, to, size, x, y);
        _numNFTPerAddress[from] -= size * size;
        _numNFTPerAddress[to] += size * size;

        _checkBatchReceiverAcceptQuad(metaTx ? from : msg.sender, from, to, size, x, y, data);
    }

batchTransferQuad keyboard_arrow_up

    function batchTransferQuad(
        address from,
        address to,
        uint256[] calldata sizes,
        uint256[] calldata xs,
        uint256[] calldata ys,
        bytes calldata data
    ) external {
        require(from != address(0), "from is zero address");
        require(to != address(0), "can't send to zero address");
        require(sizes.length == xs.length && xs.length == ys.length, "invalid data");
        bool metaTx = msg.sender != from && _metaTransactionContracts[msg.sender];
        if (msg.sender != from && !metaTx) {
            require(
                _superOperators[msg.sender] ||
                _operatorsForAll[from][msg.sender],
                "not authorized to transferMultiQuads"
            );
        }
        uint256 numTokensTransfered = 0;
        for (uint256 i = 0; i < sizes.length; i++) {
            uint256 size = sizes[i];
            _transferQuad(from, to, size, xs[i], ys[i]);
            numTokensTransfered += size * size;
        }
        _numNFTPerAddress[from] -= numTokensTransfered;
        _numNFTPerAddress[to] += numTokensTransfered;

        if (to.isContract() && _checkInterfaceWith10000Gas(to, ERC721_MANDATORY_RECEIVER)) {
            uint256[] memory ids = new uint256[](numTokensTransfered);
            uint256 counter = 0;
            for (uint256 j = 0; j < sizes.length; j++) {
                uint256 size = sizes[j];
                for (uint256 i = 0; i < size*size; i++) {
                    ids[counter] = _idInPath(i, size, xs[j], ys[j]);
                    counter++;
                }
            }
            require(
                _checkOnERC721BatchReceived(metaTx ? from : msg.sender, from, to, ids, data),
                "erc721 batch transfer rejected by to"
            );
        }
    }

name keyboard_arrow_up

    function name() external pure returns (string memory) {
        return "Sandbox's LANDs";
    }

symbol keyboard_arrow_up

    function symbol() external pure returns (string memory) {
        return "LAND";
    }

tokenURI keyboard_arrow_up

    function tokenURI(uint256 id) public view returns (string memory) {
        require(_ownerOf(id) != address(0), "Id does not exist");
        return
            string(
                abi.encodePacked(
                    "https://api.sandbox.game/lands/",
                    uint2str(id),
                    "/metadata.json"
                )
            );
    }