// SPDX-License-Identifier: MITpragmasolidity ^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.
*/abstractcontractContext{
function_msgSender() internalviewvirtualreturns (address) {
returnmsg.sender;
}
function_msgData() internalviewvirtualreturns (bytescalldata) {
returnmsg.data;
}
}
Contract Source Code
File 3 of 13: ERC165.sol
// SPDX-License-Identifier: MITpragmasolidity ^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.
*/abstractcontractERC165isIERC165{
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverridereturns (bool) {
return interfaceId ==type(IERC165).interfaceId;
}
}
Contract Source Code
File 4 of 13: ERC721A.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"./IERC721.sol";
import"./IERC721Receiver.sol";
import"./IERC721Metadata.sol";
import"./IERC721Enumerable.sol";
import"./Address.sol";
import"./Context.sol";
import"./Strings.sol";
import"./ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.
*
* Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
*
* Assumes the number of issuable tokens (collection size) is capped and fits in a uint128.
*
* Does not support burning tokens to address(0).
*/contractERC721AisContext,
ERC165,
IERC721,
IERC721Metadata,
IERC721Enumerable{
usingAddressforaddress;
usingStringsforuint256;
structTokenOwnership {
address addr;
uint64 startTimestamp;
}
structAddressData {
uint128 balance;
uint128 numberMinted;
}
uint256private currentIndex =0;
uint256internalimmutable collectionSize;
uint256internalimmutable maxBatchSize;
// Token namestringprivate _name;
// Token symbolstringprivate _symbol;
// Mapping from token ID to ownership details// An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.mapping(uint256=> TokenOwnership) private _ownerships;
// Mapping owner address to address datamapping(address=> AddressData) private _addressData;
// Mapping from token ID to approved addressmapping(uint256=>address) private _tokenApprovals;
// Mapping from owner to operator approvalsmapping(address=>mapping(address=>bool)) private _operatorApprovals;
/**
* @dev
* `maxBatchSize` refers to how much a minter can mint at a time.
* `collectionSize_` refers to how many tokens are in the collection.
*/constructor(stringmemory name_,
stringmemory symbol_,
uint256 maxBatchSize_,
uint256 collectionSize_
) {
require(
collectionSize_ >0,
"ERC721A: collection must have a nonzero supply"
);
require(maxBatchSize_ >0, "ERC721A: max batch size must be nonzero");
_name = name_;
_symbol = symbol_;
maxBatchSize = maxBatchSize_;
collectionSize = collectionSize_;
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/functiontotalSupply() publicviewoverridereturns (uint256) {
return currentIndex;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/functiontokenByIndex(uint256 index) publicviewoverridereturns (uint256) {
require(index < totalSupply(), "ERC721A: global index out of bounds");
return index;
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
* This read function is O(collectionSize). If calling from a separate contract, be sure to test gas first.
* It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
*/functiontokenOfOwnerByIndex(address owner, uint256 index)
publicviewoverridereturns (uint256)
{
require(index < balanceOf(owner), "ERC721A: owner index out of bounds");
uint256 numMintedSoFar = totalSupply();
uint256 tokenIdsIdx =0;
address currOwnershipAddr =address(0);
for (uint256 i =0; i < numMintedSoFar; i++) {
TokenOwnership memory ownership = _ownerships[i];
if (ownership.addr !=address(0)) {
currOwnershipAddr = ownership.addr;
}
if (currOwnershipAddr == owner) {
if (tokenIdsIdx == index) {
return i;
}
tokenIdsIdx++;
}
}
revert("ERC721A: unable to get token of owner by index");
}
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId)
publicviewvirtualoverride(ERC165, IERC165)
returns (bool)
{
return
interfaceId ==type(IERC721).interfaceId||
interfaceId ==type(IERC721Metadata).interfaceId||
interfaceId ==type(IERC721Enumerable).interfaceId||super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/functionbalanceOf(address owner) publicviewoverridereturns (uint256) {
require(owner !=address(0), "ERC721A: balance query for the zero address");
returnuint256(_addressData[owner].balance);
}
function_numberMinted(address owner) internalviewreturns (uint256) {
require(
owner !=address(0),
"ERC721A: number minted query for the zero address"
);
returnuint256(_addressData[owner].numberMinted);
}
functionownershipOf(uint256 tokenId)
internalviewreturns (TokenOwnership memory)
{
require(_exists(tokenId), "ERC721A: owner query for nonexistent token");
uint256 lowestTokenToCheck;
if (tokenId >= maxBatchSize) {
lowestTokenToCheck = tokenId - maxBatchSize +1;
}
for (uint256 curr = tokenId; curr >= lowestTokenToCheck; curr--) {
TokenOwnership memory ownership = _ownerships[curr];
if (ownership.addr !=address(0)) {
return ownership;
}
}
revert("ERC721A: unable to determine the owner of token");
}
/**
* @dev See {IERC721-ownerOf}.
*/functionownerOf(uint256 tokenId) publicviewoverridereturns (address) {
return ownershipOf(tokenId).addr;
}
/**
* @dev See {IERC721Metadata-name}.
*/functionname() publicviewvirtualoverridereturns (stringmemory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/functionsymbol() publicviewvirtualoverridereturns (stringmemory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/functiontokenURI(uint256 tokenId)
publicviewvirtualoverridereturns (stringmemory)
{
require(
_exists(tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
stringmemory baseURI = _baseURI();
returnbytes(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() internalviewvirtualreturns (stringmemory) {
return"";
}
/**
* @dev See {IERC721-approve}.
*/functionapprove(address to, uint256 tokenId) publicoverride{
address owner = ERC721A.ownerOf(tokenId);
require(to != owner, "ERC721A: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721A: approve caller is not owner nor approved for all"
);
_approve(to, tokenId, owner);
}
/**
* @dev See {IERC721-getApproved}.
*/functiongetApproved(uint256 tokenId) publicviewoverridereturns (address) {
require(_exists(tokenId), "ERC721A: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/functionsetApprovalForAll(address operator, bool approved) publicoverride{
require(operator != _msgSender(), "ERC721A: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/functionisApprovedForAll(address owner, address operator)
publicviewvirtualoverridereturns (bool)
{
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/functiontransferFrom(addressfrom,
address to,
uint256 tokenId
) publicoverride{
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId
) publicoverride{
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId,
bytesmemory _data
) publicoverride{
_transfer(from, to, tokenId);
require(
_checkOnERC721Received(from, to, tokenId, _data),
"ERC721A: 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`),
*/function_exists(uint256 tokenId) internalviewreturns (bool) {
return tokenId < currentIndex;
}
function_safeMint(address to, uint256 quantity) internal{
_safeMint(to, quantity, "");
}
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - there must be `quantity` tokens remaining unminted in the total collection.
* - `to` cannot be the zero address.
* - `quantity` cannot be larger than the max batch size.
*
* Emits a {Transfer} event.
*/function_safeMint(address to,
uint256 quantity,
bytesmemory _data
) internal{
uint256 startTokenId = currentIndex;
require(to !=address(0), "ERC721A: mint to the zero address");
// We know if the first token in the batch doesn't exist, the other ones don't as well, because of serial ordering.require(!_exists(startTokenId), "ERC721A: token already minted");
require(quantity <= maxBatchSize, "ERC721A: quantity to mint too high");
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
AddressData memory addressData = _addressData[to];
_addressData[to] = AddressData(
addressData.balance+uint128(quantity),
addressData.numberMinted +uint128(quantity)
);
_ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));
uint256 updatedIndex = startTokenId;
for (uint256 i =0; i < quantity; i++) {
emit Transfer(address(0), to, updatedIndex);
require(
_checkOnERC721Received(address(0), to, updatedIndex, _data),
"ERC721A: transfer to non ERC721Receiver implementer"
);
updatedIndex++;
}
currentIndex = updatedIndex;
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/function_transfer(addressfrom,
address to,
uint256 tokenId
) private{
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
getApproved(tokenId) == _msgSender() ||
isApprovedForAll(prevOwnership.addr, _msgSender()));
require(
isApprovedOrOwner,
"ERC721A: transfer caller is not owner nor approved"
);
require(
prevOwnership.addr ==from,
"ERC721A: transfer from incorrect owner"
);
require(to !=address(0), "ERC721A: transfer to the zero address");
_beforeTokenTransfers(from, to, tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, prevOwnership.addr);
_addressData[from].balance-=1;
_addressData[to].balance+=1;
_ownerships[tokenId] = TokenOwnership(to, uint64(block.timestamp));
// If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.uint256 nextTokenId = tokenId +1;
if (_ownerships[nextTokenId].addr ==address(0)) {
if (_exists(nextTokenId)) {
_ownerships[nextTokenId] = TokenOwnership(
prevOwnership.addr,
prevOwnership.startTimestamp
);
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/function_approve(address to,
uint256 tokenId,
address owner
) private{
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
uint256public nextOwnerToExplicitlySet =0;
/**
* @dev Explicitly set `owners` to eliminate loops in future calls of ownerOf().
*/function_setOwnersExplicit(uint256 quantity) internal{
uint256 oldNextOwnerToSet = nextOwnerToExplicitlySet;
require(quantity >0, "quantity must be nonzero");
uint256 endIndex = oldNextOwnerToSet + quantity -1;
if (endIndex > collectionSize -1) {
endIndex = collectionSize -1;
}
// We know if the last one in the group exists, all in the group exist, due to serial ordering.require(_exists(endIndex), "not enough minted yet for this cleanup");
for (uint256 i = oldNextOwnerToSet; i <= endIndex; i++) {
if (_ownerships[i].addr ==address(0)) {
TokenOwnership memory ownership = ownershipOf(i);
_ownerships[i] = TokenOwnership(
ownership.addr,
ownership.startTimestamp
);
}
}
nextOwnerToExplicitlySet = endIndex +1;
}
/**
* @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(addressfrom,
address to,
uint256 tokenId,
bytesmemory _data
) privatereturns (bool) {
if (to.isContract()) {
try
IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data)
returns (bytes4 retval) {
return retval == IERC721Receiver(to).onERC721Received.selector;
} catch (bytesmemory reason) {
if (reason.length==0) {
revert("ERC721A: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
returntrue;
}
}
/**
* @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* 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`.
*/function_beforeTokenTransfers(addressfrom,
address to,
uint256 startTokenId,
uint256 quantity
) internalvirtual{}
/**
* @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
* minting.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*/function_afterTokenTransfers(addressfrom,
address to,
uint256 startTokenId,
uint256 quantity
) internalvirtual{}
}
Contract Source Code
File 5 of 13: IERC165.sol
// SPDX-License-Identifier: MITpragmasolidity ^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}.
*/interfaceIERC165{
/**
* @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.
*/functionsupportsInterface(bytes4 interfaceId) externalviewreturns (bool);
}
Contract Source Code
File 6 of 13: IERC721.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"./IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/interfaceIERC721isIERC165{
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/eventTransfer(addressindexedfrom, addressindexed to, uint256indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/eventApproval(addressindexed owner, addressindexed approved, uint256indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/eventApprovalForAll(addressindexed owner, addressindexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/functionbalanceOf(address owner) externalviewreturns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/functionownerOf(uint256 tokenId) externalviewreturns (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.
*/functionsafeTransferFrom(addressfrom,
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.
*/functiontransferFrom(addressfrom,
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.
*/functionapprove(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/functiongetApproved(uint256 tokenId) externalviewreturns (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.
*/functionsetApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/functionisApprovedForAll(address owner, address operator) externalviewreturns (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.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 tokenId,
bytescalldata data
) external;
}
Contract Source Code
File 7 of 13: IERC721Enumerable.sol
// SPDX-License-Identifier: MITpragmasolidity ^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
*/interfaceIERC721EnumerableisIERC721{
/**
* @dev Returns the total amount of tokens stored by the contract.
*/functiontotalSupply() externalviewreturns (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.
*/functiontokenOfOwnerByIndex(address owner, uint256 index) externalviewreturns (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.
*/functiontokenByIndex(uint256 index) externalviewreturns (uint256);
}
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/interfaceIERC721Receiver{
/**
* @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`.
*/functiononERC721Received(address operator,
addressfrom,
uint256 tokenId,
bytescalldata data
) externalreturns (bytes4);
}
Contract Source Code
File 10 of 13: NeaNFT.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.7;/**
*
* (/ #%%
* (((( %%%%%*
* /(/(, #%%%%%%*
* (((((/((/( %%%%%%%%#%%%%/
* ((((((((((((/ *%%%%%%%%%%%%%%%%#
* /((((((((((((* #%%%%%%%%%%%%%%%%%%%
* ./(((((((((, #%%%%%%%%%%%%%%%%%%%%%
* *((((((((((((((((( %%%%%%%%%%%%%%%%%%%%%%%
* ,(((((((((((((((((( %%%%%%%%%%%%%%%%%%%%%%%%
* ((((((((((((((((((( %%%%%%%%%%%%%%%%%%%%%%%%%
* .(/((((((((((((((((( %%%%%%%%%%%%%%%%%%%%%%%%#.
* ((((((((((((((( %%%%%%%%%%%%%%%%%%%%%%%%%
* /((((((((((((((( %%%%%%%%%%%%%%%%%%%%%##*
* *((((((((((((((((((( %%%%%#%%#%%%%%%%%%%#%%
* (((((((((((((((((((. %%%%% %%%%%%
* (((((((((((((((((((, #%%% .%%%%%%,
* ((((((((((((((((((/ (%%% %%%%%%%%%.
* ((((((((/ ,%%% .%%%%%%%%%%%%%
* *((((((((((/ %%# %%%%%%%%%%%%%%
* //(((((((((((((( ,%%%%%%%%%%%%%.
* (((((((((((((( %%%%%%%%%%%%(
* (//((((((((( *%%%%%%%%%#%
* /(((((((((, %%%%%%#%%(
* (((((((* *%%%%%%%
* ./(((( %%%%#
*
* Hello Guardians,
* We don't have a lot of time. You have been called upon to act, the time is now or never.
* Together we can collectively push back the damage that has been done to the amazon.
*
* This contract stands to emit a digitally owned slice of property which you can use
* to join the fight. Gas saving measures have been used to even further reduce carbon emission.
* ~ See you in the rainforest.
*
* Project By: @nemus_earth
* Developed By: @notmokk
*
*
* Error Legend
* ---------------------------------------
* E01: Not on allow list
* E02: Cannot mint 0 NFTs
* E03: Not enough tickets for redemption
* E04: Not authenticated for call
* E05: Address cannot be 0
* E06: Timestamp cannot be in the past
* E07: Token Mode must be 0 to transfer
* E08: Token cannot already be in mode
* E09: Non matching lengths
* E10: Mode setting not allowed
*
*/import"./Ownable.sol";
import"./ReentrancyGuard.sol";
import"./ERC721A.sol";
import"./Strings.sol";
interfaceMintTicketFactory{
functiongetTicketSizeID(uint256 id) externalreturns(uint8);
functionburnFromRedeem(address account, uint256 id, uint256 amount) external;
functionbalanceOf(address account, uint256 id) externalviewreturns (uint256);
}
interfaceConservationInterface{
functionconserve(uint256 tokenId) external;
functionremove(uint256 tokenId) external;
}
interfaceExplorationInterface{
functionexplore(uint256 tokenId) external;
functionremove(uint256 tokenId) external;
}
contractNeaNFTisOwnable, ERC721A, ReentrancyGuard{
uint32public earlyAccessEnds;
uint8constant NO_MODE =0;
uint8constant EXPLORATION_MODE =1;
uint8constant CONSERVATION_MODE =2;
uint8constant COMBO_MODE =3;
boolpublic allowConservation =false;
boolpublic allowExploration =false;
boolpublic allowComboMode =false;
boolpublic allowModeSetting =false;
structTokenData {
uint8 tokenSize;
uint8 tokenMode;
string tokenTier;
}
structRedeemParams {
uint256[] mtIndexes;
uint256[] amounts;
uint256[] _parcelId;
uint256[] _size;
uint256[] _gridId;
}
mapping(uint256=> TokenData) tokenDataStorage;
mapping(address=>bool) public allowlist;
MintTicketFactory public neaMintTicketFactory;
ConservationInterface public conservationContract;
ExplorationInterface public explorationContract;
eventRedeemed(addressindexed account, uint256[] mtIndexes, uint256[] amounts, uint256[] _tokenIds, uint256[] _parcelId, uint256[] _size, uint256[] _gridId);
constructor(uint256 maxBatchSize_,
uint256 collectionSize_,
stringmemory name,
stringmemory symbol,
address _mintTicketAddress,
uint32 _earlyAccessEnds
) ERC721A(name, symbol, maxBatchSize_, collectionSize_) {
neaMintTicketFactory = MintTicketFactory(_mintTicketAddress);
earlyAccessEnds = _earlyAccessEnds;
}
functionredeem(
RedeemParams calldata params
) publicvirtual{
if (block.timestamp< earlyAccessEnds ) {
require(allowlist[_msgSender()], 'E01');
}
uint256 totalSupply = totalSupply();
uint256 amountToMint;
//check to make sure all are valid then re-loop for redemption for(uint i =0; i < params.mtIndexes.length; i++) {
require(params.amounts[i] >0, 'E02');
require(neaMintTicketFactory.balanceOf(_msgSender(), params.mtIndexes[i]) >= params.amounts[i], 'E03');
amountToMint += params.amounts[i];
}
uint localSupply =0;
uint256[] memory tokenIdStorage =newuint256[](amountToMint);
for(uint i =0; i < params.mtIndexes.length; i++) {
uint8 sizeID = neaMintTicketFactory.getTicketSizeID(params.mtIndexes[i]);
neaMintTicketFactory.burnFromRedeem(_msgSender(), params.mtIndexes[i], params.amounts[i]);
_safeMint(_msgSender(), params.amounts[i]);
for(uint j =0; j < params.amounts[i]; j++) {
tokenDataStorage[totalSupply + localSupply].tokenMode = NO_MODE;
tokenDataStorage[totalSupply + localSupply ].tokenSize = sizeID;
tokenIdStorage[localSupply] = totalSupply + localSupply;
localSupply++;
}
}
emit Redeemed(_msgSender(), params.mtIndexes, params.amounts, tokenIdStorage, params._parcelId, params._size, params._gridId);
}
functionwalletOfOwner(address _owner) publicviewreturns (uint256[] memory) {
uint256 tokenCount = balanceOf(_owner);
if (tokenCount ==0) returnnewuint256[](0);
uint256[] memory tokensId =newuint256[](tokenCount);
for (uint256 i; i < tokenCount; i++) {
tokensId[i] = tokenOfOwnerByIndex(_owner, i);
}
return tokensId;
}
functionseedAllowlist(address[] memory addresses) externalonlyOwner{
for (uint256 i =0; i < addresses.length; i++) {
allowlist[addresses[i]] =true;
}
}
functiongetOwnershipData(uint256 tokenId) externalviewreturns (TokenOwnership memory) {
return ownershipOf(tokenId);
}
functiongetSizeId(uint256 tokenId) externalviewreturns (uint256) {
return tokenDataStorage[tokenId].tokenSize;
}
functiongetTokenMode(uint256 tokenId) externalviewreturns (uint256) {
return tokenDataStorage[tokenId].tokenMode;
}
functiongetTokenTier(uint256 tokenId) externalviewreturns (stringmemory) {
return tokenDataStorage[tokenId].tokenTier;
}
// metadata URIstringprivate _baseTokenURI;
function_baseURI() internalviewvirtualoverridereturns (stringmemory) {
return _baseTokenURI;
}
functionsetBaseURI(stringcalldata baseURI) externalonlyOwner{
_baseTokenURI = baseURI;
}
functionsetTokenMode(uint256 tokenId, uint8 tokenMode) externalnonReentrant{
require(_msgSender() == owner() || _msgSender() == ownerOf(tokenId), 'E04');
require(tokenDataStorage[tokenId].tokenMode != tokenMode, 'E08');
require(allowModeSetting, 'E10');
if ( tokenMode == CONSERVATION_MODE ) {
require(allowConservation, "E10");
conservationContract.conserve(tokenId);
}
if ( tokenMode == EXPLORATION_MODE ) {
require(allowExploration, "E10");
explorationContract.explore(tokenId);
}
if ( tokenMode == COMBO_MODE ) {
require(allowComboMode, "E10");
explorationContract.explore(tokenId);
conservationContract.conserve(tokenId);
}
tokenDataStorage[tokenId].tokenMode = tokenMode;
}
functionresetTokenMode(uint256 tokenId) externalnonReentrant{
uint8 currentTokenMode = tokenDataStorage[tokenId].tokenMode;
require(_msgSender() == owner() || _msgSender() == ownerOf(tokenId), 'E04');
require(currentTokenMode != NO_MODE, 'E08');
require(allowModeSetting, 'E10');
if ( currentTokenMode == EXPLORATION_MODE ) {
explorationContract.remove(tokenId);
}
if ( currentTokenMode == CONSERVATION_MODE ) {
conservationContract.remove(tokenId);
}
if ( currentTokenMode == COMBO_MODE ) {
explorationContract.remove(tokenId);
conservationContract.remove(tokenId);
}
tokenDataStorage[tokenId].tokenMode = NO_MODE;
}
functionsetMintTicketAddress(address _mintTicketAddress) externalonlyOwner{
require(address(_mintTicketAddress) !=address(0), 'E05');
neaMintTicketFactory = MintTicketFactory(_mintTicketAddress);
}
functionsetExplorationAddress(address _explorationAddress) externalonlyOwner{
require(address(_explorationAddress) !=address(0), 'E05');
explorationContract = ExplorationInterface(_explorationAddress);
}
functionsetConservationAddress(address _conservationAddress) externalonlyOwner{
require(address(_conservationAddress) !=address(0), 'E05');
conservationContract = ConservationInterface(_conservationAddress);
}
functionsetEarlyAccessEnds(uint32 _earlyAccessEnds) externalonlyOwner{
require(_earlyAccessEnds >block.timestamp, "E06");
earlyAccessEnds = _earlyAccessEnds;
}
functionsetAllowTokenMode(bool _allowModeSetting) externalonlyOwner{
allowModeSetting = _allowModeSetting;
}
functionsetAllowConservation(bool _allowConservation) externalonlyOwner{
allowConservation = _allowConservation;
}
functionsetAllowExploration(bool _allowExploration) externalonlyOwner{
allowExploration = _allowExploration;
}
functionsetAllowComboMode(bool _allowComboMode) externalonlyOwner{
allowComboMode = _allowComboMode;
}
functionbatchSetTokenTier(uint256[] calldata _tokenIds, string[] calldata _tokenTiers) externalonlyOwner{
require(_tokenIds.length== _tokenTiers.length, 'E09');
for (uint256 i =0; i < _tokenIds.length; i++) {
tokenDataStorage[_tokenIds[i]].tokenTier = _tokenTiers[i];
}
}
function_beforeTokenTransfers(address _from, address _to, uint256 _startTokenId, uint256 _quantity) internalvirtualoverride{
require(tokenDataStorage[_startTokenId].tokenMode == NO_MODE, "E07");
super._beforeTokenTransfers(_from, _to, _startTokenId, _quantity);
}
}
Contract Source Code
File 11 of 13: Ownable.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;import"./Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/abstractcontractOwnableisContext{
addressprivate _owner;
eventOwnershipTransferred(addressindexed previousOwner, addressindexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/functionowner() publicviewvirtualreturns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/modifieronlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/functionrenounceOwnership() publicvirtualonlyOwner{
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/functiontransferOwnership(address newOwner) publicvirtualonlyOwner{
require(newOwner !=address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function_setOwner(address newOwner) private{
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
Contract Source Code
File 12 of 13: ReentrancyGuard.sol
// SPDX-License-Identifier: MITpragmasolidity ^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].
*/abstractcontractReentrancyGuard{
// 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.uint256privateconstant _NOT_ENTERED =1;
uint256privateconstant _ENTERED =2;
uint256private _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.
*/modifiernonReentrant() {
// On the first call to nonReentrant, _notEntered will be truerequire(_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;
}
}
Contract Source Code
File 13 of 13: Strings.sol
pragmasolidity ^0.8.0;/**
* @dev String operations.
*/libraryStrings{
bytes16privateconstant _HEX_SYMBOLS ="0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/functiontoString(uint256 value) internalpurereturns (stringmemory) {
// Inspired by OraclizeAPI's implementation - MIT licence// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.solif (value ==0) {
return"0";
}
uint256 temp = value;
uint256 digits;
while (temp !=0) {
digits++;
temp /=10;
}
bytesmemory buffer =newbytes(digits);
while (value !=0) {
digits -=1;
buffer[digits] =bytes1(uint8(48+uint256(value %10)));
value /=10;
}
returnstring(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/functiontoHexString(uint256 value) internalpurereturns (stringmemory) {
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.
*/functiontoHexString(uint256 value, uint256 length) internalpurereturns (stringmemory) {
bytesmemory buffer =newbytes(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");
returnstring(buffer);
}
}