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// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023.
pragma solidity ^0.8.0;
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns(bool);
}
pragma solidity ^0.8.0;
interface IERC721 is IERC165 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf(address owner) external view returns(uint256 balance);
function ownerOf(uint256 tokenId) external view returns(address owner);
function safeTransferFrom(address from, address to, uint256 tokenId) external;
function transferFrom(address from, address to, uint256 tokenId) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns(address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns(bool);
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}
pragma solidity ^0.8.0;
interface IERC721Receiver {
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns(bytes4);
}
pragma solidity ^0.8.0;
interface IERC721Metadata is IERC721 {
function name() external view returns(string memory);
function symbol() external view returns(string memory);
function tokenURI(uint256 tokenId) external view returns(string memory);
}
pragma solidity ^0.8.0;
library Address {
function isContract(address account) internal view returns(bool) {
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns(bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns(bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
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");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns(bytes memory) {
require(address(this).balance >= value, "Insufficient balance!");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns(bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
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);
}
function functionDelegateCall(address target, bytes memory data) internal returns(bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
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);
}
function verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) internal pure returns(bytes memory) {
if(success) {
return returndata;
}
else {
if(returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
}
else {
revert(errorMessage);
}
}
}
}
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns(address) {
return msg.sender;
}
function _msgData() internal view virtual returns(bytes calldata) {
return msg.data;
}
}
pragma solidity ^0.8.0;
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
function toString(uint256 value) internal 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);
}
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);
}
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);
}
}
pragma solidity ^0.8.0;
abstract contract ERC165 is IERC165 {
function supportsInterface(bytes4 interfaceId) public view virtual override returns(bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
pragma solidity ^0.8.0;
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
string private _name;
string private _symbol;
string private _description;
mapping(uint256 => address) private _owners;
mapping(address => uint256) private _balances;
mapping(uint256 => address) private _tokenApprovals;
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(string memory name_, string memory symbol_, string memory description_) {
//_name = name_;
//_symbol = symbol_;
//_description = description_;
}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns(bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
function balanceOf(address owner) public view virtual override returns(uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
function ownerOf(uint256 tokenId) public view virtual override returns(address) {
address owner = _owners[tokenId];
require(owner != address(0), "Not minted yet!");
return owner;
}
function name() public view virtual override returns(string memory) {
// Overriden
return "";
}
function symbol() public view virtual override returns(string memory) {
// Overriden
return "";
}
function tokenURI(uint256 tokenId) public view virtual override returns(string memory) {
//Overriden
return "";
}
function _baseURI() internal view virtual returns(string memory) {
// Overriden
return "";
}
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "Not authorized!");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"Not authorized!"
);
_approve(to, tokenId);
}
function getApproved(uint256 tokenId) public view virtual override returns(address) {
require(_exists(tokenId), "Nonexistent token!");
return _tokenApprovals[tokenId];
}
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);
}
function isApprovedForAll(address owner, address operator) public view virtual override returns(bool) {
return _operatorApprovals[owner][operator];
}
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "Not authorized!");
_transfer(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "Not authorized!");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "Attempted transfer to non ERC721Receiver implementer!");
}
function _exists(uint256 tokenId) internal view virtual returns(bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns(bool) {
require(_exists(tokenId), "Token does not exist!");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
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"
);
}
function _mint(address to, uint256 tokenId) internal virtual {
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
require(tokenId != tokenId, "Disabled!");
}
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "Not authorized!");
require(to != address(0), "Cannot transfer to zero addy!");
require(to != address(0), "Cannot transfer to zero addy!");
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
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;
}
}
}
pragma solidity ^0.8.0;
abstract contract ERC721Burnable is Context, ERC721 {
function burn(uint256 tokenId) public virtual {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "Not authorized!");
_burn(tokenId);
}
}
pragma solidity ^0.8.0;
pragma solidity ^0.8.0;
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns(uint256) {
uint256 c = a + b;
require(c >= a, "Addition overflow!");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns(uint256) {
require(b <= a, "Subtraction overflow!");
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns(uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if(a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "Multiplication overflow!");
return c;
}
function div(uint256 a, uint256 b) internal pure returns(uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, "Division by zero!");
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns(uint256) {
require(b != 0, "Modulo by zero!");
return a % b;
}
}
pragma solidity ^0.8.0;
/**
* @dev The contract has an owner address, and provides basic authorization control whitch
* simplifies the implementation of user permissions. This contract is based on the source code at:
* https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/ownership/Ownable.sol
*/
contract Ownable {
/**
* @dev Error constants.
*/
string public constant NOT_CURRENT_OWNER = "018001";
string public constant CANNOT_TRANSFER_TO_ZERO_ADDRESS = "018002";
/**
* @dev Current owner address.
*/
address public owner;
/**
* @dev An event which is triggered when the owner is changed.
* @param previousOwner The address of the previous owner.
* @param newOwner The address of the new owner.
*/
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The constructor sets the original `owner` of the contract to the sender account.
*/
constructor() {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner, NOT_CURRENT_OWNER);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param _newOwner The address to transfer ownership to.
*/
function transferOwnership(address _newOwner) public onlyOwner {
require(_newOwner != address(0), CANNOT_TRANSFER_TO_ZERO_ADDRESS);
emit OwnershipTransferred(owner, _newOwner);
owner = _newOwner;
}
}
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}
pragma solidity ^0.8.0;
contract BURNER is Context, ERC721Burnable {
event ReceivedRoyalties(address indexed creator, address indexed buyer, uint256 indexed amount);
using SafeMath for uint256;
bytes4 public constant _INTERFACE_ID_ERC2981 = 0x2a55205a;
uint256 private _royaltiesPercentage = 7;
uint256 private _mintFee = 10000000000000000; //0.01 ETH
uint256 private _maxCap = 256;
uint256 private _maxMintPerWallet = 25;
uint256 private _mintedTokens = 0;
address private _smartContractOwner = 0x4DaE7E6c0Ca196643012cDc526bBc6b445A2ca59;
address private _smartContractCopilot = 0x4DaE7E6c0Ca196643012cDc526bBc6b445A2ca59;
string private _name = "";
string private _symbol = "";
string private _description = "";
string private _basePath = "https://crashblossom.co/burner/"; //returns the base path.
string private _projectURI = ""; // Home web page, please leave it empty unless it's stored on a new path.
string private _contractURI = "contract.php"; //return a JSON with the metadata of the contract.
string private _baseTokenURI = "token.php"; //return a JSON with the metadata of any given token.
string private _animationURI = "presentation.php"; //animation_url, it mixes and shows the final image dynamically.
string private _tokenStaticImagePath = "assets/covers/";
string private _banner_collection_URI = "assets/img/banner.jpg"; //Collection's banner.
string private _contractImageURI = "assets/img/icon.jpg"; //Collection's icon.
uint[16] _arrayGasTiers = [0, 3, 6, 9, 12, 15, 20, 65535]; //Tiers for layers 1-7. Layer 0 is base layer, always on. Layers 8 and 9 are special.
mapping(uint => uint) private _tokenIdTracker;
bool private _paused = false;
bool private _frozen = false;
string private _strNotAuthorized = "Not authorized!";
string private _strIDOutBounds = "ID out of bounds!";
string private _strIndexOutOfBounds = "Index out of bounds!";
string private _strNotMintedYet = "Not minted yet!";
string private _strPaused = "Contract is paused!";
string private _strFrozen = "Contract is frozen!";
string private _str1Block = "High Speed";
string private _str2Block = "Medium Speed";
string private _str4Block = "Low Speed";
string private _jsCode = "";
string private _ipfsLayers = "";
string private _serverRepo = "";
// CONSTRUCTOR
constructor(string memory name, string memory symbol, string memory description) ERC721(name, symbol, description) {
_name = name;
_symbol = symbol;
_description = description;
_smartContractOwner = _msgSender();
}
// INTERNAL AUX FUNCTIONS
function char(bytes1 b) internal pure returns(bytes1 c) {
if(uint8(b) < 10) return bytes1(uint8(b) + 0x30);
else return bytes1(uint8(b) + 0x57);
}
function _getGasTier(uint gasCost) private view returns(uint) {
uint retValue = 7;
for(uint i = 0; i < 7; i++) {
if(gasCost > _arrayGasTiers[i] && gasCost <= _arrayGasTiers[i + 1]) {
retValue = i;
break;
}
}
return retValue;
}
function _getTokenTier(uint256 _tokenId) private pure returns(uint256) {
if(_tokenId > 0 && _tokenId < 25) {
return 3;
}
else if(_tokenId > 24 && _tokenId < 77) {
return 2;
}
else {
return 1;
}
}
function _getTokenTierName(uint256 _tokenId) private pure returns(string memory) {
if(_tokenId > 0 && _tokenId < 25) {
return 'Bright';
}
else if(_tokenId > 24 && _tokenId < 77) {
return 'Dark';
}
else {
return 'Collective layers';
}
}
function _getBlocksTierName(uint256 _tokenId) private view returns(string memory) {
if(_tokenId > 0 && _tokenId < 16) {
return _str1Block;
}
else if(_tokenId > 15 && _tokenId < 22) {
return _str2Block;
}
else if(_tokenId > 21 && _tokenId < 25) {
return _str4Block;
}
else if(_tokenId > 24 && _tokenId < 60) {
return _str1Block;
}
else if(_tokenId > 59 && _tokenId < 72) {
return _str2Block;
}
else if(_tokenId > 71 && _tokenId < 77) {
return _str4Block;
}
else if(_tokenId > 76 && _tokenId < 205) {
return _str1Block;
}
else if(_tokenId > 204 && _tokenId < 246) {
return _str2Block;
}
else if(_tokenId > 245 && _tokenId < 257) {
return _str4Block;
}
}
function toAsciiString(address x) internal pure returns(string memory) {
bytes memory s = new bytes(40);
for (uint i = 0; i < 20; i++) {
bytes1 b = bytes1(uint8(uint(uint160(x)) / (2**(8*(19 - i)))));
bytes1 hi = bytes1(uint8(b) / 16);
bytes1 lo = bytes1(uint8(b) - 16 * uint8(hi));
s[2*i] = char(hi);
s[2*i+1] = char(lo);
}
return string(s);
}
function _uint2str(uint256 _i) internal pure returns(string memory str) {
if (_i == 0) {
return "0";
}
uint256 j = _i;
uint256 length;
while (j != 0) {
length++;
j /= 10;
}
bytes memory bstr = new bytes(length);
uint256 k = length;
j = _i;
while (j != 0) {
bstr[--k] = bytes1(uint8(48 + j % 10));
j /= 10;
}
str = string(bstr);
return str;
}
// GETTERS
/// @dev Returns the base URL (root folder) of the server storing all the scripts.
function _basePathURI() internal view virtual returns(string memory) {
return _basePath;
}
/// @dev Returns a URI pointing to the token-level JSON.
function _baseURI() internal view virtual override returns(string memory) {
return string(abi.encodePacked(_basePath, _baseTokenURI));
}
/// @dev Returns a URI pointing to the collection's icon.
function contractImageURI() public view returns(string memory) {
return string(abi.encodePacked(_basePath, _contractImageURI));
}
/// @dev Returns a URI pointing to the contract-level JSON.
function contractURI() public view returns(string memory) {
return string(abi.encodePacked(_basePath, _contractURI));
}
/// @dev Returns the description of the project.
function description() public view returns(string memory) {
return _description;
}
/// @dev Returns the max amount of allowed mints per wallet.
function _getMaxMintsPerWallet() public view returns(uint) {
return _maxMintPerWallet;
}
/// @dev Returns a string that can be the actual JSON listing of all the IPFS layers, or a URI pointing at it.
function getIPFSJSON() public view returns(string memory) {
return _ipfsLayers;
}
/// @dev Returns a string that can be the actual JS code or a URI pointing at it.
function getJSCode() public view returns(string memory) {
return _jsCode;
}
/// @dev Returns a URI pointing to a remote repo holding all the server-side scripts.
function getRemoteRepo() public view returns(string memory) {
return _serverRepo;
}
/// @dev Returns a boolean telling whether this contract has royalties or not.
function hasRoyalties() public pure returns(bool) {
return true;
}
/// @dev Returns the max amount of tokens this contract can hold (256).
function maxCap() public view returns(uint256) {
return _maxCap;
}
/// @dev Returns the mint fee, expressed in wei.
function mintfee() public view returns(uint256) {
return _mintFee;
}
/// @dev Returns the name of the project (BURNER).
function name() public view override returns(string memory) {
return _name;
}
/// @dev Returns a JSON containing all the contract-level data.
function retrieveContractMetadata() public view returns(string memory data) {
bytes memory json;
uint royalties = _royaltiesPercentage * 100;
json = abi.encodePacked('{', '"name": "');
json = abi.encodePacked(json, _name);
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"description": "');
json = abi.encodePacked(json, _description);
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"image": "');
json = abi.encodePacked(json, _basePath);
json = abi.encodePacked(json, _contractImageURI);
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"external_link": "');
json = abi.encodePacked(json, _basePath);
json = abi.encodePacked(json, _projectURI);
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"banner_image_url": "');
json = abi.encodePacked(json, _basePath);
json = abi.encodePacked(json, _banner_collection_URI);
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"seller_fee_basis_points": ');
json = abi.encodePacked(json, _uint2str(royalties));
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"fee_recipient": "');
json = abi.encodePacked(json, toAsciiString(_smartContractOwner));
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, '}');
return string(json);
}
/// @dev Returns a list of all the minted tokens so far.
/// Note: Return value is an array containing all the tokenIDs stored onchain. Unconfirmed tx will not show up here.
function retrieveTokenIDList() public view returns(string memory data) {
bytes memory json;
json = abi.encodePacked('[');
if(_mintedTokens > 0) {
for(uint i = 1; i <= _mintedTokens; i++) {
if(i == 1) {
json = abi.encodePacked(json, _uint2str(_tokenIdTracker[i]));
}
else {
json = abi.encodePacked(json, ',', _uint2str(_tokenIdTracker[i]));
}
}
}
json = abi.encodePacked(json, ']');
return string(json);
}
/// @dev Returns a JSON containing all the associated data to a given token.
/// @param _tokenId Token ID.
function retrieveData(uint256 _tokenId) external view returns(string memory data) {
// This function returns the metadata of a given token.
require(_tokenId > 0, _strIDOutBounds);
require(_tokenId <= _maxCap, _strIDOutBounds);
require(_exists(_tokenId), _strNotMintedYet);
uint256 rarity = 0;
bytes memory json;
rarity = _getTokenTier(_tokenId);
json = abi.encodePacked('{', '"name": "');
json = abi.encodePacked(json, _symbol);
json = abi.encodePacked(json, ' #');
json = abi.encodePacked(json, _uint2str(_tokenId));
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"description": "');
json = abi.encodePacked(json, _description);
json = abi.encodePacked(json, ' Artist: crashblossom, Dev: Ariel Becker.');
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"owner": "0x');
json = abi.encodePacked(json, toAsciiString(ownerOf(_tokenId)));
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"external_url": "');
json = abi.encodePacked(json, _basePath);
json = abi.encodePacked(json, _animationURI);
json = abi.encodePacked(json, '?t=0&local=1&id=');
json = abi.encodePacked(json, _uint2str(_tokenId));
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"animation_url": "');
json = abi.encodePacked(json, _basePath);
json = abi.encodePacked(json, _animationURI);
json = abi.encodePacked(json, '?t=1&id=');
json = abi.encodePacked(json, _uint2str(_tokenId));
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"image": "');
json = abi.encodePacked(json, _basePath);
json = abi.encodePacked(json, _tokenStaticImagePath);
json = abi.encodePacked(json, _uint2str(_tokenId));
json = abi.encodePacked(json, '.jpg');
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"attributes": [');
json = abi.encodePacked(json, '{');
json = abi.encodePacked(json, '"trait_type": "Speed"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"value": "');
json = abi.encodePacked(json, _getBlocksTierName(_tokenId));
json = abi.encodePacked(json, '"');
json = abi.encodePacked(json, '},');
json = abi.encodePacked(json, '{');
json = abi.encodePacked(json, '"trait_type": "Layer"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"value": "Shared"');
json = abi.encodePacked(json, '}');
if(rarity == 2 || rarity == 3) {
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '{');
json = abi.encodePacked(json, '"trait_type": "Layer"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"value": "Dark"');
json = abi.encodePacked(json, '}');
}
if(rarity == 3) {
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '{');
json = abi.encodePacked(json, '"trait_type": "Layer"');
json = abi.encodePacked(json, ', ');
json = abi.encodePacked(json, '"value": "Bright"');
json = abi.encodePacked(json, '}');
}
json = abi.encodePacked(json, ']');
json = abi.encodePacked(json, '}');
return string(json);
}
/// @dev Returns a URI pointing to the server-side script that will display the animation for any token.
function _renderURI() internal view virtual returns(string memory) {
return string(abi.encodePacked(_basePath, _animationURI));
}
/// @dev Returns the royalties' percentage assigned to the project.
function royaltyAmount() public view returns(uint256) {
return _royaltiesPercentage;
}
/// @dev Returns the royalties that will be paid according to token ID and sale price.
/// Note: Return value is expressed in wei.
/// @param _tokenId Token ID.
/// @param _salePrice Sale price, in wei.
function royaltyInfo(uint256 _tokenId, uint256 _salePrice) external view returns(address receiver, uint256 royaltiesAmount) {
require(_tokenId > 0, _strIDOutBounds);
require(_tokenId <= _maxCap, _strIDOutBounds);
require(_exists(_tokenId), _strNotMintedYet);
require(_salePrice > 99, "Price is too small!");
uint256 retValue = _salePrice.div(100).mul(_royaltiesPercentage);
return(_smartContractOwner, retValue);
}
/// @dev Returns a URI pointing to the token's JSON.
/// @param _tokenId Token ID.
function tokenURI(uint256 _tokenId) public view virtual override returns(string memory) {
// Example: https://opensea-creatures-api.herokuapp.com/api/creature/3
require(_tokenId > 0, _strIDOutBounds);
require(_tokenId <= _maxCap, _strIDOutBounds);
require(_exists(_tokenId), _strNotMintedYet);
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, "?id=", Strings.toString(_tokenId))) : "";
}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721) returns(bool) {
return interfaceId == 0x2a55205a || super.supportsInterface(interfaceId);
}
/// @dev Returns the contract's symbol (BURNER).
function symbol() public view override returns(string memory) {
return _symbol;
}
/// @dev Returns a URI pointing to the folder containing all the layers images.
function tokenImageURI() public view returns(string memory) {
return string(abi.encodePacked(_basePath, _tokenStaticImagePath));
}
/// @dev Returns the animation's renderer URI (the one that initializes the JS script).
/// @param _tokenId Token ID.
function tokenShowcaseURI(uint _tokenId) public view returns(string memory) {
require(_tokenId > 0, _strIDOutBounds);
require(_tokenId <= _maxCap, _strIDOutBounds);
require(_exists(_tokenId), _strNotMintedYet);
string memory uri = string(abi.encodePacked(_basePath, _animationURI));
return bytes(uri).length > 0 ? string(abi.encodePacked(uri, "?t=0&id=", Strings.toString(_tokenId))) : "";
}
// SETTERS
/// @dev Changes the contract's description.
/// @param _desc New description.
function changeDescription(string memory _desc) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(!_frozen, _strFrozen);
_description = _desc;
}
/// @dev Freezes the contract, disabling some functions forever.
/// WARNING: ONCE SET, THIS STATE CANNOT BE REVERSED.
/// This is the list of functions that will be disabled by it:
/// changeDescription, setMaxMintsPerWallet, setMintFee, setRoyaltyAmount, setIPFSLayers, setJS, setServerRepoURI.
function freeze() public virtual {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(!_frozen, _strFrozen);
_frozen = true;
}
/// @dev Pauses some functions of the contract, like minting.
function pause() public virtual {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(!_paused, _strPaused);
_paused = true;
}
/// @dev Sets the admin's address.
/// @param _newAddress New address.
function setAdmin(address _newAddress) public {
require((_msgSender() == _smartContractOwner || _msgSender() == _smartContractCopilot), _strNotAuthorized);
_smartContractOwner = _newAddress;
}
/// @dev Sets the base URI for all the relative paths.
/// @param _uri Base URI.
function setBasePath(string memory _uri) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
_basePath = _uri;
}
/// @dev Sets the relative path to token.php (or any other server-side script responsible for rendering the token's JSON).
/// @param _relativePath Relative path and filename.
function setBaseTokenURI(string memory _relativePath) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
_baseTokenURI = _relativePath;
}
/// @dev Sets the relative path to the contract's image.
/// @param _relativePath Relative path and filename.
function setContractImage(string memory _relativePath) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
_contractImageURI = _relativePath;
}
/// @dev Sets the relative path to contract.php (or any other server-side script responsible for rendering the contract's JSON).
/// @param _relativePath Relative path and filename.
function setContractURI(string memory _relativePath) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
_contractURI = _relativePath;
}
/// @dev Sets the maximum amount of tokens a single wallet can mint.
/// Note: default value is 25.
/// @param _maxAmount New value, expressed in percent points.
function setMaxMintsPerWallet(uint256 _maxAmount) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(!_frozen, _strFrozen);
require(_maxAmount < 257, "Cannot exceed total supply!");
require(_maxAmount > 0, "Must be 1 or higher!");
_maxMintPerWallet = _maxAmount;
}
/// @dev Changes the value of the minting fee. Expressed in wei.
/// Note: default value is 0.01 ETH.
/// @param _newfee New value, expressed in wei.
function setMintFee(uint256 _newfee) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(!_frozen, _strFrozen);
_mintFee = _newfee;
}
/// @dev Relative path for the webpage.
/// Note: Relative to base URI.
/// @param _relativePath New relative path.
function setProjectURI(string memory _relativePath) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
_projectURI = _relativePath;
}
/// @dev Changes the value of the royalty percentage. Expressed in percent points.
/// Note: default value is 7.
/// @param _percentage New value, expressed in percent points.
function setRoyaltyAmount(uint256 _percentage) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(!_frozen, _strFrozen);
_royaltiesPercentage = _percentage;
}
/// @dev Sets the relative path where all the static imagery (gallery images) for each token is stored.
/// @param _relativePath Path relative to base URL.
function setTokenStaticImageURI(string memory _relativePath) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
_tokenStaticImagePath = _relativePath;
}
/// @dev Sets the relative path where all the dynamic imagery for each token is stored.
/// @param _relativePath Path relative to base URL.
function setTokenImageURI(string memory _relativePath) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
_animationURI = _relativePath;
}
/// @dev Stores a JSON containing the list of all the imagery used for the token layers.
/// Note: It can store the list itself or a URI pointing to the actual list.
/// @param _json A JSON object containing the list of all the hashes for both full-size and thumbnails, or a URI pointing to a valid JSON.
function setIPFSLayers(string memory _json) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(!_frozen, _strFrozen);
_ipfsLayers = _json;
}
/// @dev Stores the code of the contract, or a URI pointing to it.
/// Note: You can minify then ZIP and base64 it to reduce the amount of data. Remember to modify the PHP on the gateway to reflect this.
/// @param _str URI to the code, or the code itself.
function setJS(string memory _str) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(!_frozen, _strFrozen);
_jsCode = _str;
}
/// @dev Stores a URI pointing to the server-side code of the project.
/// @param _uri URI to the repository.
function setServerRepoURI(string memory _uri) public {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(!_frozen, _strFrozen);
_serverRepo = _uri;
}
/// @dev Unpauses the contract, allowing some functions to operate again.
function unpause() public virtual {
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(_paused, "Contract is already unpaused!");
_paused = false;
}
// MINT AND OTHER FUNCTIONS
function royaltiesReceived(address _creator, address _buyer, uint256 _amount) external {
emit ReceivedRoyalties(_creator, _buyer, _amount);
}
/// @dev Allows to withdraw any ETH available on this contract.
/// Note: Only the contract's owner can withdraw.
function withdraw() public payable {
require(!_paused, _strPaused);
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
uint balance = address(this).balance;
require(balance > 0, "No ether left to withdraw");
(bool success, ) = (msg.sender).call{value: balance}("");
require(success, "Transfer failed.");
}
/// @dev Allows to withdraw any ERC-20 token sent by error to this contract.
/// Note: Only the contract's owner can withdraw.
function withdrawERC20(IERC20 token) public payable {
require(!_paused, _strPaused);
require(_msgSender() == _smartContractOwner, _strNotAuthorized);
require(token.transfer(msg.sender, token.balanceOf(address(this))), "Transfer failed");
}
/// @dev Mints a random token. Non-admins must pay a fee for it.
/// Note: The fees are always transferred, even if the user transaction fails.
function mint() public payable {
// Shouldn't be paused.
require(!_paused, _strPaused);
// Shouldn't attempt to mint more tokens than allowed per address.
require(ERC721.balanceOf(_msgSender()) < (_maxMintPerWallet), "More than max mints allowed for this addy!");
// Shouldn't attempt to mint more tokens than the allowed by the contract.
require(ERC721.balanceOf(_msgSender()) < (_maxCap - _mintedTokens), "This action will surpass the mint cap!");
// Shouldn't be minted by the zero addy.
require(_msgSender() != address(0), "Zero address");
if(_msgSender() != _smartContractOwner) {
require(msg.value >= _mintFee, "Not enough ETH!");
}
bool boolBreakLoop = false;
while(!boolBreakLoop) {
//Create a pseudorandom seed in the form of a hash
bytes32 seed = keccak256(abi.encodePacked(block.timestamp, block.difficulty, _msgSender()));
// Extract the last byte.
uint8 _index = uint8(bytes1(seed[0]));
// Add one so it goes from 1 to 256.
uint index = _index + 1;
// And use that index to mint a pseudorandom tokenID.
if(!_exists(index)) {
if(index > 0 && index <= _maxCap) {
_mint(_msgSender(), index);
_mintedTokens++;
_tokenIdTracker[_mintedTokens] = index;
boolBreakLoop = true;
}
}
}
}
} |