ERC-721
NFT
Overview
Max Total Supply
8,300 FLIP
Holders
2,849
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
5 FLIPLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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This contract contains unverified libraries: BlitmapAnalysis
This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.
Contract Name:
Flipmap
Compiler Version
v0.8.0+commit.c7dfd78e
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "../../blitmaps/contracts/Blitmap.sol"; contract Flipmap is ERC721, ReentrancyGuard { uint256 public _tokenId = 1700; struct SVGCursor { uint8 x; uint8 y; string color1; string color2; string color3; string color4; } struct Colors { uint[4] r; uint[4] g; uint[4] b; } struct VariantParents { uint256 tokenIdA; uint256 tokenIdB; } mapping(uint256 => VariantParents) private _tokenParentIndex; mapping(bytes32 => bool) private _tokenPairs; mapping(address => uint256) private _creators; address sara = 0x00796e910Bd0228ddF4cd79e3f353871a61C351C; address lambo = 0xafBDEc0ba91FDFf03A91CbdF07392e6D72d43712; address dev = 0xE424E566BFc3f7aDDFfb17862637DD61e2da3bE2; Blitmap blitmap; address private _owner; modifier onlyOwner() { require(msg.sender == _owner); _; } constructor(address _blitAddress) ERC721("Flipmap", "FLIP") { _owner = msg.sender; blitmap = Blitmap(_blitAddress); } function transferOwner(address _newOwner) public onlyOwner { _owner = _newOwner; } function totalSupply() public view returns (uint256) { return _tokenId - 1700; } function savePairs(uint256[][] memory pairHashes) public onlyOwner { for(uint256 i=0; i<pairHashes.length; i++) { bytes32 pairHash = keccak256(abi.encodePacked(pairHashes[i][0], '-', pairHashes[i][1])); _tokenPairs[pairHash] = true; } } function mintVariant(uint256 tokenIdA, uint256 tokenIdB) public nonReentrant payable { require(msg.value == 0.03 ether); require(tokenIdA != tokenIdB, "b:08"); require(blitmap.tokenIsOriginal(tokenIdA) && blitmap.tokenIsOriginal(tokenIdB), "b:10"); // a given pair can only be minted once bytes32 pairHash = keccak256(abi.encodePacked(tokenIdA, '-', tokenIdB)); require(_tokenPairs[pairHash] == false, "b:11"); uint256 variantTokenId = _tokenId; _tokenId++; VariantParents memory parents; parents.tokenIdA = tokenIdA; parents.tokenIdB = tokenIdB; address creatorA = blitmap.tokenCreatorOf(tokenIdA); address creatorB = blitmap.tokenCreatorOf(tokenIdB); _tokenParentIndex[variantTokenId] = parents; _tokenPairs[pairHash] = true; _safeMint(msg.sender, variantTokenId); _creators[creatorA] += .0065625 ether; _creators[creatorB] += .0009375 ether; _creators[sara] += .0075 ether; _creators[lambo] += .0075 ether; _creators[dev] += .0075 ether; } function availableBalanceForCreator(address creatorAddress) public view returns (uint256) { return _creators[creatorAddress]; } function withdrawAvailableBalance() public nonReentrant { uint256 withdrawAmount = _creators[msg.sender]; _creators[msg.sender] = 0; payable(msg.sender).transfer(withdrawAmount); } function getByOwner(address owner) view public returns(uint256[] memory result) { result = new uint256[](balanceOf(owner)); uint256 resultIndex = 0; for (uint256 t = 0; t < _tokenId; t++) { if (_exists(t) && ownerOf(t) == owner) { result[resultIndex] = t; resultIndex++; } } } function pairIsTaken(uint256 tokenIdA, uint256 tokenIdB) public view returns (bool) { bytes32 pairHash = keccak256(abi.encodePacked(tokenIdA, '-', tokenIdB)); return _tokenPairs[pairHash]; } function currentTokenId() public view returns (uint256) { return _tokenId; } function tokenIsOriginal(uint256 tokenId) public view returns (bool) { if(tokenId < 1700) { return blitmap.tokenIsOriginal(tokenId); } return false; } function tokenDataOf(uint256 tokenId) public view returns (bytes memory) { if (tokenId < 1700) { return blitmap.tokenDataOf(tokenId); } bytes memory tokenParentData; if(_exists(tokenId)) { tokenParentData = blitmap.tokenDataOf(_tokenParentIndex[tokenId].tokenIdA); bytes memory tokenPaletteData = blitmap.tokenDataOf(_tokenParentIndex[tokenId].tokenIdB); for (uint8 i = 0; i < 12; ++i) { // overwrite palette data with parent B's palette data tokenParentData[i] = tokenPaletteData[i]; } } return tokenParentData; } function tokenParentsOf(uint256 tokenId) public view returns (uint256, uint256) { require(!tokenIsOriginal(tokenId)); return (_tokenParentIndex[tokenId].tokenIdA, _tokenParentIndex[tokenId].tokenIdB); } function uintToHexDigit(uint8 d) internal pure returns (bytes1) { if (0 <= d && d <= 9) { return bytes1(uint8(bytes1('0')) + d); } else if (10 <= uint8(d) && uint8(d) <= 15) { return bytes1(uint8(bytes1('a')) + d - 10); } revert(); } function uintToHexString(uint a) internal pure returns (string memory) { uint count = 0; uint b = a; while (b != 0) { count++; b /= 16; } bytes memory res = new bytes(count); for (uint i=0; i<count; ++i) { b = a % 16; res[count - i - 1] = uintToHexDigit(uint8(b)); a /= 16; } string memory str = string(res); if (bytes(str).length == 0) { return "00"; } else if (bytes(str).length == 1) { return string(abi.encodePacked("0", str)); } return str; } function byteToUint(bytes1 b) internal pure returns (uint) { return uint(uint8(b)); } function byteToHexString(bytes1 b) internal pure returns (string memory) { return uintToHexString(byteToUint(b)); } function bitTest(bytes1 aByte, uint8 index) internal pure returns (bool) { return uint8(aByte) >> index & 1 == 1; } function colorIndex(bytes1 aByte, uint8 index1, uint8 index2) internal pure returns (uint) { if (bitTest(aByte, index2) && bitTest(aByte, index1)) { return 3; } else if (bitTest(aByte, index2) && !bitTest(aByte, index1)) { return 2; } else if (!bitTest(aByte, index2) && bitTest(aByte, index1)) { return 1; } return 0; } function pixel4(string[32] memory lookup, SVGCursor memory pos) internal pure returns (string memory) { return string(abi.encodePacked( '<rect fill="', pos.color1, '" x="', lookup[pos.x], '" y="', lookup[pos.y], '" width="1.5" height="1.5" />', '<rect fill="', pos.color2, '" x="', lookup[pos.x + 1], '" y="', lookup[pos.y], '" width="1.5" height="1.5" />', string(abi.encodePacked( '<rect fill="', pos.color3, '" x="', lookup[pos.x + 2], '" y="', lookup[pos.y], '" width="1.5" height="1.5" />', '<rect fill="', pos.color4, '" x="', lookup[pos.x + 3], '" y="', lookup[pos.y], '" width="1.5" height="1.5" />' )) )); } function parentSvgDataOf(uint256 tokenIdA, uint256 tokenIdB) public view returns (string memory) { bytes memory tokenParentData = blitmap.tokenDataOf(tokenIdA); bytes memory tokenPaletteData = blitmap.tokenDataOf(tokenIdB); for (uint8 i = 0; i < 12; ++i) { // overwrite palette data with parent B's palette data tokenParentData[i] = tokenPaletteData[i]; } return tokenSvgData(tokenParentData); } function tokenSvgDataOf(uint256 tokenId) public view returns (string memory) { bytes memory data = tokenDataOf(tokenId); return tokenSvgData(data); } function tokenSvgData(bytes memory data) public pure returns (string memory) { string memory svgString = '<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 1000 1000"><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 32 32" shape-rendering="crispEdges"><g transform="translate(32, 0) scale(-1,1)">'; string[32] memory lookup = [ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31" ]; SVGCursor memory pos; string[4] memory colors = [ string(abi.encodePacked("#", byteToHexString(data[0]), byteToHexString(data[1]), byteToHexString(data[2]))), string(abi.encodePacked("#", byteToHexString(data[3]), byteToHexString(data[4]), byteToHexString(data[5]))), string(abi.encodePacked("#", byteToHexString(data[6]), byteToHexString(data[7]), byteToHexString(data[8]))), string(abi.encodePacked("#", byteToHexString(data[9]), byteToHexString(data[10]), byteToHexString(data[11]))) ]; string[8] memory p; for (uint i = 12; i < 268; i += 8) { pos.color1 = colors[colorIndex(data[i], 6, 7)]; pos.color2 = colors[colorIndex(data[i], 4, 5)]; pos.color3 = colors[colorIndex(data[i], 2, 3)]; pos.color4 = colors[colorIndex(data[i], 0, 1)]; p[0] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 1], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 1], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 1], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 1], 0, 1)]; p[1] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 2], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 2], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 2], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 2], 0, 1)]; p[2] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 3], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 3], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 3], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 3], 0, 1)]; p[3] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 4], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 4], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 4], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 4], 0, 1)]; p[4] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 5], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 5], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 5], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 5], 0, 1)]; p[5] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 6], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 6], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 6], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 6], 0, 1)]; p[6] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 7], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 7], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 7], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 7], 0, 1)]; p[7] = pixel4(lookup, pos); pos.x += 4; svgString = string(abi.encodePacked(svgString, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7])); if (pos.x >= 32) { pos.x = 0; pos.y += 1; } } svgString = string(abi.encodePacked(svgString, "</g></svg></svg>")); return svgString; } function tokenRGBColorsOf(uint256 tokenId) public view returns (BlitmapAnalysis.Colors memory) { return BlitmapAnalysis.tokenRGBColorsOf(tokenDataOf(tokenId)); } function tokenSlabsOf(uint256 tokenId) public view returns (string[4] memory) { bytes memory data = tokenDataOf(tokenId); BlitmapAnalysis.Colors memory rgb = BlitmapAnalysis.tokenRGBColorsOf(data); string[4] memory chars = [unicode"◢", unicode"◣", unicode"◤", unicode"◥"]; string[4] memory slabs; slabs[0] = chars[(rgb.r[0] + rgb.g[0] + rgb.b[0]) % 4]; slabs[1] = chars[(rgb.r[1] + rgb.g[1] + rgb.b[1]) % 4]; slabs[2] = chars[(rgb.r[2] + rgb.g[2] + rgb.b[2]) % 4]; slabs[3] = chars[(rgb.r[3] + rgb.g[3] + rgb.b[3]) % 4]; return slabs; } function tokenAffinityOf(uint256 tokenId) public view returns (string[3] memory) { return BlitmapAnalysis.tokenAffinityOf(tokenDataOf(tokenId)); } function makeAttributes(uint256 tokenId) public view returns (string memory attributes) { string[5] memory traits; uint256 parentA = _tokenParentIndex[tokenId].tokenIdA; uint256 parentB = _tokenParentIndex[tokenId].tokenIdB; traits[0] = '{"trait_type":"Type","value":"Flipling"}'; traits[1] = string(abi.encodePacked('{"trait_type":"Composition","value":"', blitmap.tokenNameOf(parentA), ' (#', toString(parentA), ')"}')); traits[2] = string(abi.encodePacked('{"trait_type":"Palette","value":"', blitmap.tokenNameOf(parentB), ' (#', toString(parentB), ')"}')); string[3] memory affinity = tokenAffinityOf(tokenId); traits[3] = string(abi.encodePacked('{"trait_type":"Affinity","value":"', affinity[0])); if(bytes(affinity[1]).length > 0) { traits[3] = string(abi.encodePacked(traits[3], ', ', affinity[1])); } if(bytes(affinity[2]).length > 0) { traits[3] = string(abi.encodePacked(traits[3], ', ', affinity[2])); } traits[3] = string(abi.encodePacked(traits[3], '"}')); string[4] memory slabs = tokenSlabsOf(tokenId); traits[4] = string(abi.encodePacked('{"trait_type":"Slabs","value":"', slabs[0], ' ', slabs[1], ' ', slabs[2], ' ', slabs[3], '"}')); attributes = string(abi.encodePacked(traits[0], ',', traits[1], ',', traits[2], ',', traits[3], ',', traits[4])); } function tokenURI(uint256 tokenId) override public view returns (string memory) { uint256 parentA = _tokenParentIndex[tokenId].tokenIdA; uint256 parentB = _tokenParentIndex[tokenId].tokenIdB; string memory name = string(abi.encodePacked('#', toString(tokenId), ' - ', blitmap.tokenNameOf(parentA), ' ', blitmap.tokenNameOf(parentB))); string memory description = 'Flipmaps are the lost 8,300 Blitmaps, only flipped.'; string memory image = string(abi.encodePacked('data:image/svg+xml;base64,', Base64.encode(bytes(tokenSvgDataOf(tokenId))))); string memory json = string(abi.encodePacked('{"name": "', name, '", "description": "', description, '", "image": "', image, '", "attributes": [', makeAttributes(tokenId), ']}')); return string(abi.encodePacked('data:application/json;base64,', Base64.encode(bytes(json)))); } function toString(uint256 value) public pure returns (string memory) { 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); } } library Base64 { bytes internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; /// @notice Encodes some bytes to the base64 representation function encode(bytes memory data) internal pure returns (string memory) { uint256 len = data.length; if (len == 0) return ""; // multiply by 4/3 rounded up uint256 encodedLen = 4 * ((len + 2) / 3); // Add some extra buffer at the end bytes memory result = new bytes(encodedLen + 32); bytes memory table = TABLE; assembly { let tablePtr := add(table, 1) let resultPtr := add(result, 32) for { let i := 0 } lt(i, len) { } { i := add(i, 3) let input := and(mload(add(data, i)), 0xffffff) let out := mload(add(tablePtr, and(shr(18, input), 0x3F))) out := shl(8, out) out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF)) out := shl(8, out) out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF)) out := shl(8, out) out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF)) out := shl(224, out) mstore(resultPtr, out) resultPtr := add(resultPtr, 4) } switch mod(len, 3) case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) } case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) } mstore(result, encodedLen) } return string(result); } }
// 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); }
// 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; } }
// 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); } }
// 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; } }
// 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); } } } }
// 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); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @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` cannot be the zero address. * - `to` cannot be the zero address. * * 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 override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } }
// 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); }
// 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; }
// 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 {} }
// 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; } }
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See the License for the specific language governing permissions and limitations under the License. */ pragma solidity ^0.8.0; /** * Strings Library * * In summary this is a simple library of string functions which make simple * string operations less tedious in solidity. * * Please be aware these functions can be quite gas heavy so use them only when * necessary not to clog the blockchain with expensive transactions. * * @author James Lockhart <[email protected]> */ library StringUtil { function titleCase(string memory _base) internal pure returns (string[] memory) { string[] memory components = split(_base, " "); for (uint8 i = 0; i < components.length; ++i) { if (length(components[i]) == 0) { continue; } string memory firstChar = substring(components[i], 1); string memory remainingChars = _substring(components[i], int(StringUtil.length(components[i]) - 1), 1); components[i] = string(abi.encodePacked(upper(firstChar), remainingChars)); } return components; } /** * Concat (High gas cost) * * Appends two strings together and returns a new value * * @param _base When being used for a data type this is the extended object * otherwise this is the string which will be the concatenated * prefix * @param _value The value to be the concatenated suffix * @return string The resulting string from combinging the base and value */ function concat(string memory _base, string memory _value) internal pure returns (string memory) { bytes memory _baseBytes = bytes(_base); bytes memory _valueBytes = bytes(_value); assert(_valueBytes.length > 0); string memory _tmpValue = new string(_baseBytes.length + _valueBytes.length); bytes memory _newValue = bytes(_tmpValue); uint i; uint j; for (i = 0; i < _baseBytes.length; i++) { _newValue[j++] = _baseBytes[i]; } for (i = 0; i < _valueBytes.length; i++) { _newValue[j++] = _valueBytes[i]; } return string(_newValue); } /** * Index Of * * Locates and returns the position of a character within a string * * @param _base When being used for a data type this is the extended object * otherwise this is the string acting as the haystack to be * searched * @param _value The needle to search for, at present this is currently * limited to one character * @return int The position of the needle starting from 0 and returning -1 * in the case of no matches found */ function indexOf(string memory _base, string memory _value) internal pure returns (int) { return _indexOf(_base, _value, 0); } /** * Index Of * * Locates and returns the position of a character within a string starting * from a defined offset * * @param _base When being used for a data type this is the extended object * otherwise this is the string acting as the haystack to be * searched * @param _value The needle to search for, at present this is currently * limited to one character * @param _offset The starting point to start searching from which can start * from 0, but must not exceed the length of the string * @return int The position of the needle starting from 0 and returning -1 * in the case of no matches found */ function _indexOf(string memory _base, string memory _value, uint _offset) internal pure returns (int) { bytes memory _baseBytes = bytes(_base); bytes memory _valueBytes = bytes(_value); assert(_valueBytes.length == 1); for (uint i = _offset; i < _baseBytes.length; i++) { if (_baseBytes[i] == _valueBytes[0]) { return int(i); } } return -1; } /** * Length * * Returns the length of the specified string * * @param _base When being used for a data type this is the extended object * otherwise this is the string to be measured * @return uint The length of the passed string */ function length(string memory _base) internal pure returns (uint) { bytes memory _baseBytes = bytes(_base); return _baseBytes.length; } /** * Sub String * * Extracts the beginning part of a string based on the desired length * * @param _base When being used for a data type this is the extended object * otherwise this is the string that will be used for * extracting the sub string from * @param _length The length of the sub string to be extracted from the base * @return string The extracted sub string */ function substring(string memory _base, int _length) internal pure returns (string memory) { return _substring(_base, _length, 0); } /** * Sub String * * Extracts the part of a string based on the desired length and offset. The * offset and length must not exceed the lenth of the base string. * * @param _base When being used for a data type this is the extended object * otherwise this is the string that will be used for * extracting the sub string from * @param _length The length of the sub string to be extracted from the base * @param _offset The starting point to extract the sub string from * @return string The extracted sub string */ function _substring(string memory _base, int _length, int _offset) internal pure returns (string memory) { bytes memory _baseBytes = bytes(_base); assert(uint(_offset + _length) <= _baseBytes.length); string memory _tmp = new string(uint(_length)); bytes memory _tmpBytes = bytes(_tmp); uint j = 0; for (uint i = uint(_offset); i < uint(_offset + _length); i++) { _tmpBytes[j++] = _baseBytes[i]; } return string(_tmpBytes); } /** * String Split (Very high gas cost) * * Splits a string into an array of strings based off the delimiter value. * Please note this can be quite a gas expensive function due to the use of * storage so only use if really required. * * @param _base When being used for a data type this is the extended object * otherwise this is the string value to be split. * @param _value The delimiter to split the string on which must be a single * character * @return splitArr An array of values split based off the delimiter, but * do not container the delimiter. */ function split(string memory _base, string memory _value) internal pure returns (string[] memory splitArr) { bytes memory _baseBytes = bytes(_base); uint _offset = 0; uint _splitsCount = 1; while (_offset < _baseBytes.length - 1) { int _limit = _indexOf(_base, _value, _offset); if (_limit == -1) break; else { _splitsCount++; _offset = uint(_limit) + 1; } } splitArr = new string[](_splitsCount); _offset = 0; _splitsCount = 0; while (_offset < _baseBytes.length - 1) { int _limit = _indexOf(_base, _value, _offset); if (_limit == - 1) { _limit = int(_baseBytes.length); } string memory _tmp = new string(uint(_limit) - _offset); bytes memory _tmpBytes = bytes(_tmp); uint j = 0; for (uint i = _offset; i < uint(_limit); i++) { _tmpBytes[j++] = _baseBytes[i]; } _offset = uint(_limit) + 1; splitArr[_splitsCount++] = string(_tmpBytes); } return splitArr; } /** * Compare To * * Compares the characters of two strings, to ensure that they have an * identical footprint * * @param _base When being used for a data type this is the extended object * otherwise this is the string base to compare against * @param _value The string the base is being compared to * @return bool Simply notates if the two string have an equivalent */ function compareTo(string memory _base, string memory _value) internal pure returns (bool) { bytes memory _baseBytes = bytes(_base); bytes memory _valueBytes = bytes(_value); if (_baseBytes.length != _valueBytes.length) { return false; } for (uint i = 0; i < _baseBytes.length; i++) { if (_baseBytes[i] != _valueBytes[i]) { return false; } } return true; } /** * Compare To Ignore Case (High gas cost) * * Compares the characters of two strings, converting them to the same case * where applicable to alphabetic characters to distinguish if the values * match. * * @param _base When being used for a data type this is the extended object * otherwise this is the string base to compare against * @param _value The string the base is being compared to * @return bool Simply notates if the two string have an equivalent value * discarding case */ function compareToIgnoreCase(string memory _base, string memory _value) internal pure returns (bool) { bytes memory _baseBytes = bytes(_base); bytes memory _valueBytes = bytes(_value); if (_baseBytes.length != _valueBytes.length) { return false; } for (uint i = 0; i < _baseBytes.length; i++) { if (_baseBytes[i] != _valueBytes[i] && _upper(_baseBytes[i]) != _upper(_valueBytes[i])) { return false; } } return true; } /** * Upper * * Converts all the values of a string to their corresponding upper case * value. * * @param _base When being used for a data type this is the extended object * otherwise this is the string base to convert to upper case * @return string */ function upper(string memory _base) internal pure returns (string memory) { bytes memory _baseBytes = bytes(_base); for (uint i = 0; i < _baseBytes.length; i++) { _baseBytes[i] = _upper(_baseBytes[i]); } return string(_baseBytes); } /** * Lower * * Converts all the values of a string to their corresponding lower case * value. * * @param _base When being used for a data type this is the extended object * otherwise this is the string base to convert to lower case * @return string */ function lower(string memory _base) internal pure returns (string memory) { bytes memory _baseBytes = bytes(_base); for (uint i = 0; i < _baseBytes.length; i++) { _baseBytes[i] = _lower(_baseBytes[i]); } return string(_baseBytes); } /** * Upper * * Convert an alphabetic character to upper case and return the original * value when not alphabetic * * @param _b1 The byte to be converted to upper case * @return bytes1 The converted value if the passed value was alphabetic * and in a lower case otherwise returns the original value */ function _upper(bytes1 _b1) private pure returns (bytes1) { if (_b1 >= 0x61 && _b1 <= 0x7A) { return bytes1(uint8(_b1) - 32); } return _b1; } /** * Lower * * Convert an alphabetic character to lower case and return the original * value when not alphabetic * * @param _b1 The byte to be converted to lower case * @return bytes1 The converted value if the passed value was alphabetic * and in a upper case otherwise returns the original value */ function _lower(bytes1 _b1) private pure returns (bytes1) { if (_b1 >= 0x41 && _b1 <= 0x5A) { return bytes1(uint8(_b1) + 32); } return _b1; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; library BlitmapAnalysis { struct Colors { uint[4] r; uint[4] g; uint[4] b; } function byteToUint(bytes1 b) internal pure returns (uint) { return uint(uint8(b)); } function tokenRGBColorsOf(bytes memory data) public pure returns (Colors memory) { Colors memory rgb; rgb.r[0] = byteToUint(data[0]); rgb.g[0] = byteToUint(data[1]); rgb.b[0] = byteToUint(data[2]); rgb.r[1] = byteToUint(data[3]); rgb.g[1] = byteToUint(data[4]); rgb.b[1] = byteToUint(data[5]); rgb.r[2] = byteToUint(data[6]); rgb.g[2] = byteToUint(data[7]); rgb.b[2] = byteToUint(data[8]); rgb.r[3] = byteToUint(data[9]); rgb.g[3] = byteToUint(data[10]); rgb.b[3] = byteToUint(data[11]); return rgb; } function tokenSlabsOf(bytes memory data) public pure returns (string[4] memory) { Colors memory rgb = tokenRGBColorsOf(data); string[4] memory chars = ["◢", "◣", "◤", "◥"]; string[4] memory slabs; slabs[0] = chars[(rgb.r[0] + rgb.g[0] + rgb.b[0]) % 4]; slabs[1] = chars[(rgb.r[1] + rgb.g[1] + rgb.b[1]) % 4]; slabs[2] = chars[(rgb.r[2] + rgb.g[2] + rgb.b[2]) % 4]; slabs[3] = chars[(rgb.r[3] + rgb.g[3] + rgb.b[3]) % 4]; return slabs; } function tokenAffinityOf(bytes memory data) public pure returns (string[3] memory) { Colors memory rgb = tokenRGBColorsOf(data); uint r = rgb.r[0] + rgb.r[1] + rgb.r[2]; uint g = rgb.g[0] + rgb.g[1] + rgb.g[2]; uint b = rgb.b[0] + rgb.b[1] + rgb.b[2]; string[3] memory essences; uint8 offset; if (r >= g && r >= b) { essences[offset] = "Fire"; ++offset; if (g > 256) { essences[offset] = "Earth"; ++offset; } if (b > 256) { essences[offset] = "Water"; ++offset; } } else if (g >= r && g >= b) { essences[offset] = "Earth"; ++offset; if (r > 256) { essences[offset] = "Fire"; ++offset; } if (b > 256) { essences[offset] = "Water"; ++offset; } } else if (b >= r && b >= g) { essences[offset] = "Water"; ++offset; if (r > 256) { essences[offset] = "Fire"; ++offset; } if (g > 256) { essences[offset] = "Earth"; ++offset; } } if (offset == 1) { essences[0] = string(abi.encodePacked(essences[0], " III")); } else if (offset == 2) { essences[0] = string(abi.encodePacked(essences[0], " II")); essences[1] = string(abi.encodePacked(essences[1], " I")); } else if (offset == 3) { essences[0] = string(abi.encodePacked(essences[0], " I")); essences[1] = string(abi.encodePacked(essences[1], " I")); essences[2] = string(abi.encodePacked(essences[2], " I")); } return essences; } }
/* ______ _ _____ _____ | ___ \ | |_ _|_ _| | |_/ / | | | | | | ___ \ | | | | | | |_/ / |_____| |_ | | \____/\_____/\___/ \_/ ___ ___ ___ ______ | \/ | / _ \ | ___ \ | . . |/ /_\ \| |_/ / | |\/| || _ || __/ | | | || | | || | \_| |_/\_| |_/\_| by dom hofmann and friends */ // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./blitmap-analysis.sol"; import "./string-util.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; contract Blitmap is ERC721Enumerable { struct SVGCursor { uint8 x; uint8 y; string color1; string color2; string color3; string color4; } struct VariantParents { uint256 tokenIdA; uint256 tokenIdB; } struct Creator { string name; bool isAllowed; uint256 availableBalance; uint8 remainingMints; } struct TokenMetadata { string name; address creator; uint8 remainingVariants; } struct Colors { uint[4] r; uint[4] g; uint[4] b; } address private _owner; mapping (address => Creator) private _allowedList; event AddedToAllowedList(address indexed account); event RemovedFromAllowedList(address indexed account); event Published(); event MetadataChanged(uint256 indexed tokenId, TokenMetadata indexed newMetadata); mapping(uint256 => VariantParents) private _tokenParentIndex; mapping(bytes32 => bool) private _tokenPairs; bytes[] private _tokenDataIndex; TokenMetadata[] private _tokenMetadataIndex; string private _uriPrefix; uint8 private _numOriginals; uint8 private constant _maxNumOriginals = 128; uint8 private constant _maxNumVariants = 16; bool public published; modifier onlyOwner() { require(msg.sender == _owner); _; } modifier onlyAllowed() { require(isAllowed(msg.sender)); _; } constructor() ERC721("Blitmap", "BLIT") { _owner = msg.sender; published = false; setBaseURI("https://api.blitmap.com/v1/metadata/"); addAllowed(msg.sender, "sara", 128); } function _baseURI() override internal view virtual returns (string memory) { return _uriPrefix; } function setBaseURI(string memory prefix) public onlyOwner { _uriPrefix = prefix; } function addAllowed(address _address, string memory name, uint8 allowedMints) public onlyOwner { Creator memory creator; creator.name = name; creator.isAllowed = true; creator.remainingMints = allowedMints; _allowedList[_address] = creator; emit AddedToAllowedList(_address); } function changeMetadataOf(uint256 tokenId, TokenMetadata memory newMetadata) public onlyOwner { require(published == false, "b:01"); // only allow changes prior to publishing _tokenMetadataIndex[tokenId] = newMetadata; emit MetadataChanged(tokenId, newMetadata); } function publish() public onlyOwner { published = true; emit Published(); } /* function removeAllowed(address _address) public onlyOwner { _allowedList[_address].isAllowed = false; emit RemovedFromAllowedList(_address); } */ function isAllowed(address _address) public view returns (bool) { return _allowedList[_address].isAllowed == true; } function creatorNameOf(address _address) public view returns (string memory) { return _allowedList[_address].name; } function mintOriginal(bytes memory tokenData, string memory name) public onlyAllowed { require(published == false, "b:01"); require(_numOriginals < _maxNumOriginals, "b:03"); require(tokenData.length == 268, "b:04"); // any combination of 268 bytes is technically a valid blit require(bytes(name).length > 0 && bytes(name).length < 11, "b:05"); require(_allowedList[msg.sender].remainingMints > 0, "b:06"); uint256 tokenId = totalSupply(); _tokenDataIndex.push(tokenData); TokenMetadata memory metadata; metadata.name = name; metadata.remainingVariants = _maxNumVariants; metadata.creator = msg.sender; _allowedList[msg.sender].remainingMints--; _tokenMetadataIndex.push(metadata); _numOriginals++; _safeMint(msg.sender, tokenId); } /* function remainingNumOriginals() public view returns (uint8) { return _maxNumOriginals - _numOriginals; } function remainingNumMints(address _address) public view returns (uint8) { return _allowedList[_address].remainingMints; } function allowedNumOriginals() public pure returns (uint8) { return _maxNumOriginals; } function allowedNumVariants() public pure returns (uint8) { return _maxNumVariants; } function availableBalanceForCreator(address creatorAddress) public view returns (uint256) { return _allowedList[creatorAddress].availableBalance; } function withdrawAvailableBalance() public onlyAllowed { uint256 withdrawAmount = _allowedList[msg.sender].availableBalance; _allowedList[msg.sender].availableBalance = 0; payable(msg.sender).transfer(withdrawAmount); } */ function mintVariant(uint256 tokenIdA, uint256 tokenIdB) public payable { require(msg.value == 0.1 ether); require(published == true, "b:02"); require(_exists(tokenIdA) && _exists(tokenIdB), "b:07"); require(tokenIdA != tokenIdB, "b:08"); require(tokenRemainingVariantsOf(tokenIdA) > 0, "b:09"); require(tokenIsOriginal(tokenIdA) && tokenIsOriginal(tokenIdB), "b:10"); // a given pair can only be minted once bytes32 pairHash = keccak256(abi.encodePacked(tokenIdA, tokenIdB)); require(_tokenPairs[pairHash] == false, "b:11"); uint256 variantTokenId = totalSupply(); VariantParents memory parents; parents.tokenIdA = tokenIdA; parents.tokenIdB = tokenIdB; _tokenMetadataIndex[tokenIdA].remainingVariants--; // don't need to write real data here since we can assemble sibling data from parent data _tokenDataIndex.push(hex"00"); TokenMetadata memory metadata; metadata.name = ""; metadata.remainingVariants = 0; metadata.creator = msg.sender; _tokenMetadataIndex.push(metadata); _tokenParentIndex[variantTokenId] = parents; _tokenPairs[pairHash] = true; _safeMint(msg.sender, variantTokenId); _allowedList[_tokenMetadataIndex[tokenIdA].creator].availableBalance += 0.0875 ether; _allowedList[_tokenMetadataIndex[tokenIdB].creator].availableBalance += 0.0125 ether; } function tokenNameOf(uint256 tokenId) public view returns (string memory) { string memory name; if (tokenIsOriginal(tokenId)) { name = _tokenMetadataIndex[tokenId].name; } else { VariantParents memory parents = _tokenParentIndex[tokenId]; name = string(abi.encodePacked(tokenNameOf(parents.tokenIdA), " ", tokenNameOf(parents.tokenIdB))); } string[] memory components = StringUtil.titleCase(name); string memory titleCaseName; for (uint8 i = 0; i < components.length; ++i) { if (i == 0) { titleCaseName = components[i]; } else { titleCaseName = string(abi.encodePacked(titleCaseName, " ", components[i])); } } return titleCaseName; } function tokenIsOriginal(uint256 tokenId) public view returns (bool) { return (_tokenDataIndex[tokenId].length == 268); } function tokenParentsOf(uint256 tokenId) public view returns (uint256, uint256) { require(!tokenIsOriginal(tokenId)); return (_tokenParentIndex[tokenId].tokenIdA, _tokenParentIndex[tokenId].tokenIdB); } function tokenCreatorOf(uint256 tokenId) public view returns (address) { return _tokenMetadataIndex[tokenId].creator; } /* function tokenCreatorNameOf(uint256 tokenId) public view returns (string memory) { return _allowedList[tokenCreatorOf(tokenId)].name; } */ function tokenDataOf(uint256 tokenId) public view returns (bytes memory) { bytes memory data = _tokenDataIndex[tokenId]; if (tokenIsOriginal(tokenId)) { return data; } bytes memory tokenParentData = _tokenDataIndex[_tokenParentIndex[tokenId].tokenIdA]; bytes memory tokenPaletteData = _tokenDataIndex[_tokenParentIndex[tokenId].tokenIdB]; for (uint8 i = 0; i < 12; ++i) { // overwrite palette data with parent B's palette data tokenParentData[i] = tokenPaletteData[i]; } return tokenParentData; } function tokenRemainingVariantsOf(uint256 tokenId) public view returns (uint256) { if (!tokenIsOriginal(tokenId)) { return 0; } return _tokenMetadataIndex[tokenId].remainingVariants; } function uintToHexDigit(uint8 d) internal pure returns (bytes1) { if (0 <= d && d <= 9) { return bytes1(uint8(bytes1('0')) + d); } else if (10 <= uint8(d) && uint8(d) <= 15) { return bytes1(uint8(bytes1('a')) + d - 10); } revert(); } function uintToHexString(uint a) internal pure returns (string memory) { uint count = 0; uint b = a; while (b != 0) { count++; b /= 16; } bytes memory res = new bytes(count); for (uint i=0; i<count; ++i) { b = a % 16; res[count - i - 1] = uintToHexDigit(uint8(b)); a /= 16; } string memory str = string(res); if (bytes(str).length == 0) { return "00"; } else if (bytes(str).length == 1) { return string(abi.encodePacked("0", str)); } return str; } function byteToUint(bytes1 b) internal pure returns (uint) { return uint(uint8(b)); } function byteToHexString(bytes1 b) internal pure returns (string memory) { return uintToHexString(byteToUint(b)); } function bitTest(bytes1 aByte, uint8 index) internal pure returns (bool) { return uint8(aByte) >> index & 1 == 1; } function colorIndex(bytes1 aByte, uint8 index1, uint8 index2) internal pure returns (uint) { if (bitTest(aByte, index2) && bitTest(aByte, index1)) { return 3; } else if (bitTest(aByte, index2) && !bitTest(aByte, index1)) { return 2; } else if (!bitTest(aByte, index2) && bitTest(aByte, index1)) { return 1; } return 0; } function pixel4(string[32] memory lookup, SVGCursor memory pos) internal pure returns (string memory) { return string(abi.encodePacked( '<rect fill="', pos.color1, '" x="', lookup[pos.x], '" y="', lookup[pos.y], '" width="1.5" height="1.5" />', '<rect fill="', pos.color2, '" x="', lookup[pos.x + 1], '" y="', lookup[pos.y], '" width="1.5" height="1.5" />', string(abi.encodePacked( '<rect fill="', pos.color3, '" x="', lookup[pos.x + 2], '" y="', lookup[pos.y], '" width="1.5" height="1.5" />', '<rect fill="', pos.color4, '" x="', lookup[pos.x + 3], '" y="', lookup[pos.y], '" width="1.5" height="1.5" />' )) )); } function tokenSvgDataOf(uint256 tokenId) public view returns (string memory) { string memory svgString = '<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 32 32">'; string[32] memory lookup = [ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31" ]; SVGCursor memory pos; bytes memory data = tokenDataOf(tokenId); string[4] memory colors = [ string(abi.encodePacked("#", byteToHexString(data[0]), byteToHexString(data[1]), byteToHexString(data[2]))), string(abi.encodePacked("#", byteToHexString(data[3]), byteToHexString(data[4]), byteToHexString(data[5]))), string(abi.encodePacked("#", byteToHexString(data[6]), byteToHexString(data[7]), byteToHexString(data[8]))), string(abi.encodePacked("#", byteToHexString(data[9]), byteToHexString(data[10]), byteToHexString(data[11]))) ]; string[8] memory p; for (uint i = 12; i < 268; i += 8) { pos.color1 = colors[colorIndex(data[i], 6, 7)]; pos.color2 = colors[colorIndex(data[i], 4, 5)]; pos.color3 = colors[colorIndex(data[i], 2, 3)]; pos.color4 = colors[colorIndex(data[i], 0, 1)]; p[0] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 1], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 1], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 1], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 1], 0, 1)]; p[1] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 2], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 2], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 2], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 2], 0, 1)]; p[2] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 3], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 3], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 3], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 3], 0, 1)]; p[3] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 4], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 4], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 4], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 4], 0, 1)]; p[4] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 5], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 5], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 5], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 5], 0, 1)]; p[5] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 6], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 6], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 6], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 6], 0, 1)]; p[6] = pixel4(lookup, pos); pos.x += 4; pos.color1 = colors[colorIndex(data[i + 7], 6, 7)]; pos.color2 = colors[colorIndex(data[i + 7], 4, 5)]; pos.color3 = colors[colorIndex(data[i + 7], 2, 3)]; pos.color4 = colors[colorIndex(data[i + 7], 0, 1)]; p[7] = pixel4(lookup, pos); pos.x += 4; svgString = string(abi.encodePacked(svgString, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7])); if (pos.x >= 32) { pos.x = 0; pos.y += 1; } } svgString = string(abi.encodePacked(svgString, "</svg>")); return svgString; } function tokenRGBColorsOf(uint256 tokenId) public view returns (BlitmapAnalysis.Colors memory) { return BlitmapAnalysis.tokenRGBColorsOf(tokenDataOf(tokenId)); } function tokenSlabsOf(uint256 tokenId) public view returns (string[4] memory) { return BlitmapAnalysis.tokenSlabsOf(tokenDataOf(tokenId)); } function tokenAffinityOf(uint256 tokenId) public view returns (string[3] memory) { return BlitmapAnalysis.tokenAffinityOf(tokenDataOf(tokenId)); } } /* errors: 01: This can only be done before the project has been published. 02: This can only be done after the project has been published. 03: The maximum number of originals has been minted. 04: Blitmaps must be exactly 268 bytes. 05: Blitmaps must have a title must be between 1 and 10 characters. 06: You have reached your quota for minted originals. 07: One of the originals in this combination doesn't exist. 08: An original cannot be combined with itself. 09: This original has sold out all of its siblings. 10: Both blitmaps in this combination must be originals. 11: A sibling with this combination already exists. */
{ "remappings": [], "optimizer": { "enabled": true, "runs": 200 }, "evmVersion": "istanbul", "libraries": { "/Users/Shared/Code/experimental/flipmaps/blitmaps/contracts/blitmap-analysis.sol": { "BlitmapAnalysis": "0x7d2e3eba0119f38cca36a1cf4aeb9ffd38bf9210" } }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"_blitAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"_tokenId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"creatorAddress","type":"address"}],"name":"availableBalanceForCreator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currentTokenId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"getByOwner","outputs":[{"internalType":"uint256[]","name":"result","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"makeAttributes","outputs":[{"internalType":"string","name":"attributes","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenIdA","type":"uint256"},{"internalType":"uint256","name":"tokenIdB","type":"uint256"}],"name":"mintVariant","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenIdA","type":"uint256"},{"internalType":"uint256","name":"tokenIdB","type":"uint256"}],"name":"pairIsTaken","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenIdA","type":"uint256"},{"internalType":"uint256","name":"tokenIdB","type":"uint256"}],"name":"parentSvgDataOf","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[][]","name":"pairHashes","type":"uint256[][]"}],"name":"savePairs","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"toString","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenAffinityOf","outputs":[{"internalType":"string[3]","name":"","type":"string[3]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenDataOf","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenIsOriginal","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenParentsOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenRGBColorsOf","outputs":[{"components":[{"internalType":"uint256[4]","name":"r","type":"uint256[4]"},{"internalType":"uint256[4]","name":"g","type":"uint256[4]"},{"internalType":"uint256[4]","name":"b","type":"uint256[4]"}],"internalType":"struct BlitmapAnalysis.Colors","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenSlabsOf","outputs":[{"internalType":"string[4]","name":"","type":"string[4]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"tokenSvgData","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenSvgDataOf","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newOwner","type":"address"}],"name":"transferOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawAvailableBalance","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000008d04a8c79ceb0889bdd12acdf3fa9d207ed3ff63
-----Decoded View---------------
Arg [0] : _blitAddress (address): 0x8d04a8c79cEB0889Bdd12acdF3Fa9D207eD3Ff63
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000008d04a8c79ceb0889bdd12acdf3fa9d207ed3ff63
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