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0.8.19+commit.7dd6d404
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Solidity
// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs
pragma solidity ^0.8.4;
import './IERC721A.sol';
/**
* @dev Interface of ERC721 token receiver.
*/
interface ERC721A__IERC721Receiver {
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
/**
* @title ERC721A
*
* @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721)
* Non-Fungible Token Standard, including the Metadata extension.
* Optimized for lower gas during batch mints.
*
* Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...)
* starting from `_startTokenId()`.
*
* Assumptions:
*
* - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
* - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256).
*/
contract ERC721A is IERC721A {
// Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364).
struct TokenApprovalRef {
address value;
}
// =============================================================
// CONSTANTS
// =============================================================
// Mask of an entry in packed address data.
uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;
// The bit position of `numberMinted` in packed address data.
uint256 private constant _BITPOS_NUMBER_MINTED = 64;
// The bit position of `numberBurned` in packed address data.
uint256 private constant _BITPOS_NUMBER_BURNED = 128;
// The bit position of `aux` in packed address data.
uint256 private constant _BITPOS_AUX = 192;
// Mask of all 256 bits in packed address data except the 64 bits for `aux`.
uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;
// The bit position of `startTimestamp` in packed ownership.
uint256 private constant _BITPOS_START_TIMESTAMP = 160;
// The bit mask of the `burned` bit in packed ownership.
uint256 private constant _BITMASK_BURNED = 1 << 224;
// The bit position of the `nextInitialized` bit in packed ownership.
uint256 private constant _BITPOS_NEXT_INITIALIZED = 225;
// The bit mask of the `nextInitialized` bit in packed ownership.
uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225;
// The bit position of `extraData` in packed ownership.
uint256 private constant _BITPOS_EXTRA_DATA = 232;
// Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`.
uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1;
// The mask of the lower 160 bits for addresses.
uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1;
// The maximum `quantity` that can be minted with {_mintERC2309}.
// This limit is to prevent overflows on the address data entries.
// For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309}
// is required to cause an overflow, which is unrealistic.
uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;
// The `Transfer` event signature is given by:
// `keccak256(bytes("Transfer(address,address,uint256)"))`.
bytes32 private constant _TRANSFER_EVENT_SIGNATURE =
0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;
// =============================================================
// STORAGE
// =============================================================
// The next token ID to be minted.
uint256 private _currentIndex;
// The number of tokens burned.
uint256 private _burnCounter;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to ownership details
// An empty struct value does not necessarily mean the token is unowned.
// See {_packedOwnershipOf} implementation for details.
//
// Bits Layout:
// - [0..159] `addr`
// - [160..223] `startTimestamp`
// - [224] `burned`
// - [225] `nextInitialized`
// - [232..255] `extraData`
mapping(uint256 => uint256) private _packedOwnerships;
// Mapping owner address to address data.
//
// Bits Layout:
// - [0..63] `balance`
// - [64..127] `numberMinted`
// - [128..191] `numberBurned`
// - [192..255] `aux`
mapping(address => uint256) private _packedAddressData;
// Mapping from token ID to approved address.
mapping(uint256 => TokenApprovalRef) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
// =============================================================
// CONSTRUCTOR
// =============================================================
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_currentIndex = _startTokenId();
}
// =============================================================
// TOKEN COUNTING OPERATIONS
// =============================================================
/**
* @dev Returns the starting token ID.
* To change the starting token ID, please override this function.
*/
function _startTokenId() internal view virtual returns (uint256) {
return 0;
}
/**
* @dev Returns the next token ID to be minted.
*/
function _nextTokenId() internal view virtual returns (uint256) {
return _currentIndex;
}
/**
* @dev Returns the total number of tokens in existence.
* Burned tokens will reduce the count.
* To get the total number of tokens minted, please see {_totalMinted}.
*/
function totalSupply() public view virtual override returns (uint256) {
// Counter underflow is impossible as _burnCounter cannot be incremented
// more than `_currentIndex - _startTokenId()` times.
unchecked {
return _currentIndex - _burnCounter - _startTokenId();
}
}
/**
* @dev Returns the total amount of tokens minted in the contract.
*/
function _totalMinted() internal view virtual returns (uint256) {
// Counter underflow is impossible as `_currentIndex` does not decrement,
// and it is initialized to `_startTokenId()`.
unchecked {
return _currentIndex - _startTokenId();
}
}
/**
* @dev Returns the total number of tokens burned.
*/
function _totalBurned() internal view virtual returns (uint256) {
return _burnCounter;
}
// =============================================================
// ADDRESS DATA OPERATIONS
// =============================================================
/**
* @dev Returns the number of tokens in `owner`'s account.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
if (owner == address(0)) revert BalanceQueryForZeroAddress();
return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY;
}
/**
* Returns the number of tokens minted by `owner`.
*/
function _numberMinted(address owner) internal view returns (uint256) {
return (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY;
}
/**
* Returns the number of tokens burned by or on behalf of `owner`.
*/
function _numberBurned(address owner) internal view returns (uint256) {
return (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY;
}
/**
* Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
*/
function _getAux(address owner) internal view returns (uint64) {
return uint64(_packedAddressData[owner] >> _BITPOS_AUX);
}
/**
* Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
* If there are multiple variables, please pack them into a uint64.
*/
function _setAux(address owner, uint64 aux) internal virtual {
uint256 packed = _packedAddressData[owner];
uint256 auxCasted;
// Cast `aux` with assembly to avoid redundant masking.
assembly {
auxCasted := aux
}
packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX);
_packedAddressData[owner] = packed;
}
// =============================================================
// IERC165
// =============================================================
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
* to learn more about how these ids are created.
*
* This function call must use less than 30000 gas.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
// The interface IDs are constants representing the first 4 bytes
// of the XOR of all function selectors in the interface.
// See: [ERC165](https://eips.ethereum.org/EIPS/eip-165)
// (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`)
return
interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.
interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.
interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.
}
// =============================================================
// IERC721Metadata
// =============================================================
/**
* @dev Returns the token collection name.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the token collection symbol.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
string memory baseURI = _baseURI();
return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _toString(tokenId))) : '';
}
/**
* @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, it can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return '';
}
// =============================================================
// OWNERSHIPS OPERATIONS
// =============================================================
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
return address(uint160(_packedOwnershipOf(tokenId)));
}
/**
* @dev Gas spent here starts off proportional to the maximum mint batch size.
* It gradually moves to O(1) as tokens get transferred around over time.
*/
function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) {
return _unpackedOwnership(_packedOwnershipOf(tokenId));
}
/**
* @dev Returns the unpacked `TokenOwnership` struct at `index`.
*/
function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) {
return _unpackedOwnership(_packedOwnerships[index]);
}
/**
* @dev Initializes the ownership slot minted at `index` for efficiency purposes.
*/
function _initializeOwnershipAt(uint256 index) internal virtual {
if (_packedOwnerships[index] == 0) {
_packedOwnerships[index] = _packedOwnershipOf(index);
}
}
/**
* Returns the packed ownership data of `tokenId`.
*/
function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) {
uint256 curr = tokenId;
unchecked {
if (_startTokenId() <= curr)
if (curr < _currentIndex) {
uint256 packed = _packedOwnerships[curr];
// If not burned.
if (packed & _BITMASK_BURNED == 0) {
// Invariant:
// There will always be an initialized ownership slot
// (i.e. `ownership.addr != address(0) && ownership.burned == false`)
// before an unintialized ownership slot
// (i.e. `ownership.addr == address(0) && ownership.burned == false`)
// Hence, `curr` will not underflow.
//
// We can directly compare the packed value.
// If the address is zero, packed will be zero.
while (packed == 0) {
packed = _packedOwnerships[--curr];
}
return packed;
}
}
}
revert OwnerQueryForNonexistentToken();
}
/**
* @dev Returns the unpacked `TokenOwnership` struct from `packed`.
*/
function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) {
ownership.addr = address(uint160(packed));
ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP);
ownership.burned = packed & _BITMASK_BURNED != 0;
ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA);
}
/**
* @dev Packs ownership data into a single uint256.
*/
function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) {
assembly {
// Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
owner := and(owner, _BITMASK_ADDRESS)
// `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`.
result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags))
}
}
/**
* @dev Returns the `nextInitialized` flag set if `quantity` equals 1.
*/
function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) {
// For branchless setting of the `nextInitialized` flag.
assembly {
// `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`.
result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1))
}
}
// =============================================================
// APPROVAL OPERATIONS
// =============================================================
/**
* @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) public payable virtual override {
address owner = ownerOf(tokenId);
if (_msgSenderERC721A() != owner)
if (!isApprovedForAll(owner, _msgSenderERC721A())) {
revert ApprovalCallerNotOwnerNorApproved();
}
_tokenApprovals[tokenId].value = to;
emit Approval(owner, to, tokenId);
}
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
return _tokenApprovals[tokenId].value;
}
/**
* @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) public virtual override {
_operatorApprovals[_msgSenderERC721A()][operator] = approved;
emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
}
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @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. See {_mint}.
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return
_startTokenId() <= tokenId &&
tokenId < _currentIndex && // If within bounds,
_packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned.
}
/**
* @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`.
*/
function _isSenderApprovedOrOwner(
address approvedAddress,
address owner,
address msgSender
) private pure returns (bool result) {
assembly {
// Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
owner := and(owner, _BITMASK_ADDRESS)
// Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean.
msgSender := and(msgSender, _BITMASK_ADDRESS)
// `msgSender == owner || msgSender == approvedAddress`.
result := or(eq(msgSender, owner), eq(msgSender, approvedAddress))
}
}
/**
* @dev Returns the storage slot and value for the approved address of `tokenId`.
*/
function _getApprovedSlotAndAddress(uint256 tokenId)
private
view
returns (uint256 approvedAddressSlot, address approvedAddress)
{
TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId];
// The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`.
assembly {
approvedAddressSlot := tokenApproval.slot
approvedAddress := sload(approvedAddressSlot)
}
}
// =============================================================
// TRANSFER OPERATIONS
// =============================================================
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* 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
) public payable virtual override {
uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);
if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner();
(uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);
// The nested ifs save around 20+ gas over a compound boolean condition.
if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();
if (to == address(0)) revert TransferToZeroAddress();
_beforeTokenTransfers(from, to, tokenId, 1);
// Clear approvals from the previous owner.
assembly {
if approvedAddress {
// This is equivalent to `delete _tokenApprovals[tokenId]`.
sstore(approvedAddressSlot, 0)
}
}
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
unchecked {
// We can directly increment and decrement the balances.
--_packedAddressData[from]; // Updates: `balance -= 1`.
++_packedAddressData[to]; // Updates: `balance += 1`.
// Updates:
// - `address` to the next owner.
// - `startTimestamp` to the timestamp of transfering.
// - `burned` to `false`.
// - `nextInitialized` to `true`.
_packedOwnerships[tokenId] = _packOwnershipData(
to,
_BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked)
);
// If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
uint256 nextTokenId = tokenId + 1;
// If the next slot's address is zero and not burned (i.e. packed value is zero).
if (_packedOwnerships[nextTokenId] == 0) {
// If the next slot is within bounds.
if (nextTokenId != _currentIndex) {
// Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
_packedOwnerships[nextTokenId] = prevOwnershipPacked;
}
}
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
/**
* @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public payable virtual override {
safeTransferFrom(from, to, tokenId, '');
}
/**
* @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 memory _data
) public payable virtual override {
transferFrom(from, to, tokenId);
if (to.code.length != 0)
if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
}
/**
* @dev Hook that is called before a set of serially-ordered token IDs
* are about to be transferred. This includes minting.
* And also called before burning one token.
*
* `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`.
* - When `to` is zero, `tokenId` will be burned by `from`.
* - `from` and `to` are never both zero.
*/
function _beforeTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
/**
* @dev Hook that is called after a set of serially-ordered token IDs
* have been transferred. This includes minting.
* And also called after one token has been burned.
*
* `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` has been
* transferred to `to`.
* - When `from` is zero, `tokenId` has been minted for `to`.
* - When `to` is zero, `tokenId` has been burned by `from`.
* - `from` and `to` are never both zero.
*/
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
/**
* @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract.
*
* `from` - Previous owner of the given token ID.
* `to` - Target address that will receive the token.
* `tokenId` - Token ID to be transferred.
* `_data` - Optional data to send along with the call.
*
* Returns whether the call correctly returned the expected magic value.
*/
function _checkContractOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns (
bytes4 retval
) {
return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert TransferToNonERC721ReceiverImplementer();
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
}
// =============================================================
// MINT OPERATIONS
// =============================================================
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event for each mint.
*/
function _mint(address to, uint256 quantity) internal virtual {
uint256 startTokenId = _currentIndex;
if (quantity == 0) revert MintZeroQuantity();
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
// Overflows are incredibly unrealistic.
// `balance` and `numberMinted` have a maximum limit of 2**64.
// `tokenId` has a maximum limit of 2**256.
unchecked {
// Updates:
// - `balance += quantity`.
// - `numberMinted += quantity`.
//
// We can directly add to the `balance` and `numberMinted`.
_packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);
// Updates:
// - `address` to the owner.
// - `startTimestamp` to the timestamp of minting.
// - `burned` to `false`.
// - `nextInitialized` to `quantity == 1`.
_packedOwnerships[startTokenId] = _packOwnershipData(
to,
_nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
);
uint256 toMasked;
uint256 end = startTokenId + quantity;
// Use assembly to loop and emit the `Transfer` event for gas savings.
// The duplicated `log4` removes an extra check and reduces stack juggling.
// The assembly, together with the surrounding Solidity code, have been
// delicately arranged to nudge the compiler into producing optimized opcodes.
assembly {
// Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean.
toMasked := and(to, _BITMASK_ADDRESS)
// Emit the `Transfer` event.
log4(
0, // Start of data (0, since no data).
0, // End of data (0, since no data).
_TRANSFER_EVENT_SIGNATURE, // Signature.
0, // `address(0)`.
toMasked, // `to`.
startTokenId // `tokenId`.
)
// The `iszero(eq(,))` check ensures that large values of `quantity`
// that overflows uint256 will make the loop run out of gas.
// The compiler will optimize the `iszero` away for performance.
for {
let tokenId := add(startTokenId, 1)
} iszero(eq(tokenId, end)) {
tokenId := add(tokenId, 1)
} {
// Emit the `Transfer` event. Similar to above.
log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId)
}
}
if (toMasked == 0) revert MintToZeroAddress();
_currentIndex = end;
}
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* This function is intended for efficient minting only during contract creation.
*
* It emits only one {ConsecutiveTransfer} as defined in
* [ERC2309](https://eips.ethereum.org/EIPS/eip-2309),
* instead of a sequence of {Transfer} event(s).
*
* Calling this function outside of contract creation WILL make your contract
* non-compliant with the ERC721 standard.
* For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309
* {ConsecutiveTransfer} event is only permissible during contract creation.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `quantity` must be greater than 0.
*
* Emits a {ConsecutiveTransfer} event.
*/
function _mintERC2309(address to, uint256 quantity) internal virtual {
uint256 startTokenId = _currentIndex;
if (to == address(0)) revert MintToZeroAddress();
if (quantity == 0) revert MintZeroQuantity();
if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit();
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
// Overflows are unrealistic due to the above check for `quantity` to be below the limit.
unchecked {
// Updates:
// - `balance += quantity`.
// - `numberMinted += quantity`.
//
// We can directly add to the `balance` and `numberMinted`.
_packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);
// Updates:
// - `address` to the owner.
// - `startTimestamp` to the timestamp of minting.
// - `burned` to `false`.
// - `nextInitialized` to `quantity == 1`.
_packedOwnerships[startTokenId] = _packOwnershipData(
to,
_nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
);
emit ConsecutiveTransfer(startTokenId, startTokenId + quantity - 1, address(0), to);
_currentIndex = startTokenId + quantity;
}
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
/**
* @dev Safely mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement
* {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
* - `quantity` must be greater than 0.
*
* See {_mint}.
*
* Emits a {Transfer} event for each mint.
*/
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal virtual {
_mint(to, quantity);
unchecked {
if (to.code.length != 0) {
uint256 end = _currentIndex;
uint256 index = end - quantity;
do {
if (!_checkContractOnERC721Received(address(0), to, index++, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
} while (index < end);
// Reentrancy protection.
if (_currentIndex != end) revert();
}
}
}
/**
* @dev Equivalent to `_safeMint(to, quantity, '')`.
*/
function _safeMint(address to, uint256 quantity) internal virtual {
_safeMint(to, quantity, '');
}
// =============================================================
// BURN OPERATIONS
// =============================================================
/**
* @dev Equivalent to `_burn(tokenId, false)`.
*/
function _burn(uint256 tokenId) internal virtual {
_burn(tokenId, false);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId, bool approvalCheck) internal virtual {
uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);
address from = address(uint160(prevOwnershipPacked));
(uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);
if (approvalCheck) {
// The nested ifs save around 20+ gas over a compound boolean condition.
if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();
}
_beforeTokenTransfers(from, address(0), tokenId, 1);
// Clear approvals from the previous owner.
assembly {
if approvedAddress {
// This is equivalent to `delete _tokenApprovals[tokenId]`.
sstore(approvedAddressSlot, 0)
}
}
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
unchecked {
// Updates:
// - `balance -= 1`.
// - `numberBurned += 1`.
//
// We can directly decrement the balance, and increment the number burned.
// This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`.
_packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1;
// Updates:
// - `address` to the last owner.
// - `startTimestamp` to the timestamp of burning.
// - `burned` to `true`.
// - `nextInitialized` to `true`.
_packedOwnerships[tokenId] = _packOwnershipData(
from,
(_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked)
);
// If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
uint256 nextTokenId = tokenId + 1;
// If the next slot's address is zero and not burned (i.e. packed value is zero).
if (_packedOwnerships[nextTokenId] == 0) {
// If the next slot is within bounds.
if (nextTokenId != _currentIndex) {
// Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
_packedOwnerships[nextTokenId] = prevOwnershipPacked;
}
}
}
}
emit Transfer(from, address(0), tokenId);
_afterTokenTransfers(from, address(0), tokenId, 1);
// Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
unchecked {
_burnCounter++;
}
}
// =============================================================
// EXTRA DATA OPERATIONS
// =============================================================
/**
* @dev Directly sets the extra data for the ownership data `index`.
*/
function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {
uint256 packed = _packedOwnerships[index];
if (packed == 0) revert OwnershipNotInitializedForExtraData();
uint256 extraDataCasted;
// Cast `extraData` with assembly to avoid redundant masking.
assembly {
extraDataCasted := extraData
}
packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA);
_packedOwnerships[index] = packed;
}
/**
* @dev Called during each token transfer to set the 24bit `extraData` field.
* Intended to be overridden by the cosumer contract.
*
* `previousExtraData` - the value of `extraData` before transfer.
*
* 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, `tokenId` will be burned by `from`.
* - `from` and `to` are never both zero.
*/
function _extraData(
address from,
address to,
uint24 previousExtraData
) internal view virtual returns (uint24) {}
/**
* @dev Returns the next extra data for the packed ownership data.
* The returned result is shifted into position.
*/
function _nextExtraData(
address from,
address to,
uint256 prevOwnershipPacked
) private view returns (uint256) {
uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA);
return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA;
}
// =============================================================
// OTHER OPERATIONS
// =============================================================
/**
* @dev Returns the message sender (defaults to `msg.sender`).
*
* If you are writing GSN compatible contracts, you need to override this function.
*/
function _msgSenderERC721A() internal view virtual returns (address) {
return msg.sender;
}
/**
* @dev Converts a uint256 to its ASCII string decimal representation.
*/
function _toString(uint256 value) internal pure virtual returns (string memory str) {
assembly {
// The maximum value of a uint256 contains 78 digits (1 byte per digit), but
// we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.
// We will need 1 word for the trailing zeros padding, 1 word for the length,
// and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0.
let m := add(mload(0x40), 0xa0)
// Update the free memory pointer to allocate.
mstore(0x40, m)
// Assign the `str` to the end.
str := sub(m, 0x20)
// Zeroize the slot after the string.
mstore(str, 0)
// Cache the end of the memory to calculate the length later.
let end := str
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
// prettier-ignore
for { let temp := value } 1 {} {
str := sub(str, 1)
// Write the character to the pointer.
// The ASCII index of the '0' character is 48.
mstore8(str, add(48, mod(temp, 10)))
// Keep dividing `temp` until zero.
temp := div(temp, 10)
// prettier-ignore
if iszero(temp) { break }
}
let length := sub(end, str)
// Move the pointer 32 bytes leftwards to make room for the length.
str := sub(str, 0x20)
// Store the length.
mstore(str, length)
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/**
* @notice It is emitted if the call recipient is not a contract.
*/
error NotAContract();
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address from, address to, uint256 amount) external returns (bool);
function decimals() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs
pragma solidity ^0.8.4;
/**
* @dev Interface of ERC721A.
*/
interface IERC721A {
/**
* The caller must own the token or be an approved operator.
*/
error ApprovalCallerNotOwnerNorApproved();
/**
* The token does not exist.
*/
error ApprovalQueryForNonexistentToken();
/**
* Cannot query the balance for the zero address.
*/
error BalanceQueryForZeroAddress();
/**
* Cannot mint to the zero address.
*/
error MintToZeroAddress();
/**
* The quantity of tokens minted must be more than zero.
*/
error MintZeroQuantity();
/**
* The token does not exist.
*/
error OwnerQueryForNonexistentToken();
/**
* The caller must own the token or be an approved operator.
*/
error TransferCallerNotOwnerNorApproved();
/**
* The token must be owned by `from`.
*/
error TransferFromIncorrectOwner();
/**
* Cannot safely transfer to a contract that does not implement the
* ERC721Receiver interface.
*/
error TransferToNonERC721ReceiverImplementer();
/**
* Cannot transfer to the zero address.
*/
error TransferToZeroAddress();
/**
* The token does not exist.
*/
error URIQueryForNonexistentToken();
/**
* The `quantity` minted with ERC2309 exceeds the safety limit.
*/
error MintERC2309QuantityExceedsLimit();
/**
* The `extraData` cannot be set on an unintialized ownership slot.
*/
error OwnershipNotInitializedForExtraData();
// =============================================================
// STRUCTS
// =============================================================
struct TokenOwnership {
// The address of the owner.
address addr;
// Stores the start time of ownership with minimal overhead for tokenomics.
uint64 startTimestamp;
// Whether the token has been burned.
bool burned;
// Arbitrary data similar to `startTimestamp` that can be set via {_extraData}.
uint24 extraData;
}
// =============================================================
// TOKEN COUNTERS
// =============================================================
/**
* @dev Returns the total number of tokens in existence.
* Burned tokens will reduce the count.
* To get the total number of tokens minted, please see {_totalMinted}.
*/
function totalSupply() external view returns (uint256);
// =============================================================
// IERC165
// =============================================================
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
* to learn more about how these ids are created.
*
* This function call must use less than 30000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
// =============================================================
// IERC721
// =============================================================
/**
* @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,
bytes calldata data
) external payable;
/**
* @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external payable;
/**
* @dev Transfers `tokenId` 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 payable;
/**
* @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 payable;
/**
* @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 the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @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);
// =============================================================
// IERC721Metadata
// =============================================================
/**
* @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);
// =============================================================
// IERC2309
// =============================================================
/**
* @dev Emitted when tokens in `fromTokenId` to `toTokenId`
* (inclusive) is transferred from `from` to `to`, as defined in the
* [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard.
*
* See {_mintERC2309} for more details.
*/
event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;
interface IInfiltration {
/**
* @notice Agent statuses.
* 1. Active: The agent is active.
* 2. Wounded: The agent is wounded. The agent can be healed for a number of blocks.
* 3. Healing: The agent is healing. The outcome of the healing is not yet known.
* 4. Escaped: The agent escaped from the game and took some rewards with him.
* 5. Dead: The agent is dead. It can be due to the agent being wounded for too long or a failed healing.
*/
enum AgentStatus {
Active,
Wounded,
Healing,
Escaped,
Dead
}
/**
* @notice Heal outcomes. The agent can either be healed or killed.
*/
enum HealOutcome {
Healed,
Killed
}
/**
* @notice Randomness request statuses.
*/
enum RandomnessRequestStatus {
None,
Requested,
Fulfilled
}
/**
* @notice An agent.
* @dev The storage layout of an agent is as follows:
* |---------------------------------------------------------------------------------------------------|
* | empty (176 bits) | healCount (16 bits) | woundedAt (40 bits) | status (8 bits) | agentId (16 bits)|
* |---------------------------------------------------------------------------------------------------|
* @param agentId The ID of the agent.
* @param status The status of the agent.
* @param woundedAt The round number when the agent was wounded.
* @param healCount The number of times the agent has been successfully healed.
*/
struct Agent {
uint16 agentId;
AgentStatus status;
uint40 woundedAt;
uint16 healCount;
}
/**
* @notice The constructor calldata.
* @param owner The owner of the contract.
* @param name The name of the collection.
* @param symbol The symbol of the collection.
* @param price The mint price.
* @param maxSupply The maximum supply of the collection.
* @param maxMintPerAddress The maximum number of agents that can be minted per address.
* @param blocksPerRound The number of blocks per round.
* @param agentsToWoundPerRoundInBasisPoints The number of agents to wound per round in basis points.
* @param roundsToBeWoundedBeforeDead The number of rounds for an agent to be wounded before getting killed.
* @param looks The LOOKS token address.
* @param vrfCoordinator The VRF coordinator address.
* @param keyHash The VRF key hash.
* @param subscriptionId The VRF subscription ID.
* @param transferManager The transfer manager address.
* @param healBaseCost The base cost to heal an agent.
* @param protocolFeeRecipient The protocol fee recipient.
* @param protocolFeeBp The protocol fee basis points.
* @param weth The WETH address.
* @param baseURI The base URI of the collection.
*/
struct ConstructorCalldata {
address owner;
string name;
string symbol;
uint256 price;
uint256 maxSupply;
uint256 maxMintPerAddress;
uint256 blocksPerRound;
uint256 agentsToWoundPerRoundInBasisPoints;
uint256 roundsToBeWoundedBeforeDead;
address looks;
address vrfCoordinator;
bytes32 keyHash;
uint64 subscriptionId;
address transferManager;
uint256 healBaseCost;
address protocolFeeRecipient;
uint16 protocolFeeBp;
address weth;
string baseURI;
}
/**
* @notice Game info.
* @dev The storage layout of game info is as follows:
* |-------------------------------------------------------------------------------------------------------------------------------|
* | empty (56 bits) | randomnessLastRequestedAt (40 bits) | currentRoundBlockNumber (40 bits) | currentRoundId (40 bits) |
* | escapedAgents (16 bits) | deadAgents (16 bits) | healingAgents (16 bits) | woundedAgents (16 bits) | activeAgents (16 bits) |
* |-------------------------------------------------------------------------------------------------------------------------------|
* | prizePool (256 bits) |
* |-------------------------------------------------------------------------------------------------------------------------------|
* | secondaryPrizePool (256 bits) |
* |-------------------------------------------------------------------------------------------------------------------------------|
* | secondaryLooksPrizePool (256 bits) |
* |-------------------------------------------------------------------------------------------------------------------------------|
* @param activeAgents The number of active agents.
* @param woundedAgents The number of wounded agents.
* @param healingAgents The number of healing agents.
* @param deadAgents The number of dead agents.
* @param escapedAgents The number of escaped agents.
* @param currentRoundId The current round ID.
* @param currentRoundBlockNumber The current round block number.
* @param randomnessLastRequestedAt The timestamp when the randomness was last requested.
* @param prizePool The ETH prize pool for the final winner.
* @param secondaryPrizePool The secondary ETH prize pool for the top X winners.
* @param secondaryLooksPrizePool The secondary LOOKS prize pool for the top X winners.
*/
struct GameInfo {
uint16 activeAgents;
uint16 woundedAgents;
uint16 healingAgents;
uint16 deadAgents;
uint16 escapedAgents;
uint40 currentRoundId;
uint40 currentRoundBlockNumber;
uint40 randomnessLastRequestedAt;
uint256 prizePool;
uint256 secondaryPrizePool;
uint256 secondaryLooksPrizePool;
}
/**
* @notice A Chainlink randomness request.
* @param status The status of the randomness request.
* @param roundId The round ID when the randomness request occurred.
* @param randomWord The returned random word.
*/
struct RandomnessRequest {
RandomnessRequestStatus status;
uint40 roundId;
uint256 randomWord;
}
/**
* @notice A heal result that is used to emit events.
* @param agentId The agent ID.
* @param outcome The outcome of the healing.
*/
struct HealResult {
uint256 agentId;
HealOutcome outcome;
}
event EmergencyWithdrawal(uint256 ethAmount, uint256 looksAmount);
event MintPeriodUpdated(uint256 mintStart, uint256 mintEnd);
event HealRequestSubmitted(uint256 roundId, uint256[] agentIds, uint256[] costs);
event HealRequestFulfilled(uint256 roundId, HealResult[] healResults);
event RandomnessRequested(uint256 roundId, uint256 requestId);
event RandomnessFulfilled(uint256 roundId, uint256 requestId);
event InvalidRandomnessFulfillment(uint256 requestId, uint256 randomnessRequestRoundId, uint256 currentRoundId);
event RoundStarted(uint256 roundId);
event Escaped(uint256 roundId, uint256[] agentIds, uint256[] rewards);
event PrizeClaimed(uint256 agentId, address currency, uint256 amount);
event Wounded(uint256 roundId, uint256[] agentIds);
event Killed(uint256 roundId, uint256[] agentIds);
event Won(uint256 roundId, uint256 agentId);
error ExceededTotalSupply();
error FrontrunLockIsOn();
error GameAlreadyBegun();
error GameNotYetBegun();
error GameIsStillRunning();
error GameOver();
error HealingDisabled();
error InexactNativeTokensSupplied();
error InvalidAgentStatus(uint256 agentId, AgentStatus expectedStatus);
error InvalidHealingRoundsDelay();
error InvalidMaxSupply();
error InvalidMintPeriod();
error InvalidPlacement();
error MaximumHealingRequestPerRoundExceeded();
error MintAlreadyStarted();
error MintCanOnlyBeExtended();
error MintStartIsInThePast();
error NoAgentsLeft();
error NoAgentsProvided();
error NotEnoughMinted();
error NothingToClaim();
error NotInMintPeriod();
error NotAgentOwner();
error Immutable();
error RandomnessRequestAlreadyExists();
error InvalidRandomnessRequestId();
error RoundsToBeWoundedBeforeDeadTooLow();
error StillMinting();
error TooEarlyToStartNewRound();
error TooEarlyToRetryRandomnessRequest();
error TooManyMinted();
error WoundedAgentIdsPerRoundExceeded();
/**
* @notice Sets the mint period.
* @dev If _mintStart is 0, the function call is just a mint end extension.
* @param _mintStart The starting timestamp of the mint period.
* @param _mintEnd The ending timestamp of the mint period.
*/
function setMintPeriod(uint40 _mintStart, uint40 _mintEnd) external;
/**
* @notice Mints a number of agents.
* @param to The recipient
* @param quantity The number of agents to mint.
*/
function premint(address to, uint256 quantity) external payable;
/**
* @notice Mints a number of agents.
* @param quantity The number of agents to mint.
*/
function mint(uint256 quantity) external payable;
/**
* @notice This function is here in case the game's invariant condition does not hold or the game is stuck.
* Only callable by the contract owner.
*/
function emergencyWithdraw() external;
/**
* @notice Starts the game.
* @dev Starting the game sets the current round ID to 1.
*/
function startGame() external;
/**
* @notice Starts a new round.
*/
function startNewRound() external;
/**
* @notice Close a round after randomness is fullfilled by Chainlink.
* @param requestId The Chainlink request ID.
*/
function closeRound(uint256 requestId) external;
/**
* @notice Claims the grand prize. Only callable by the winner.
*/
function claimGrandPrize() external;
/**
* @notice Claims the secondary prizes. Only callable by top 50 agents.
* @param agentId The agent ID.
*/
function claimSecondaryPrizes(uint256 agentId) external;
/**
* @notice Escape from the game and take some rewards. 80% of the prize pool is distributed to
* the escaped agents and the rest to the secondary prize pool.
* @param agentIds The agent IDs to escape.
*/
function escape(uint256[] calldata agentIds) external;
/**
* @notice Submits a heal request for the specified agent IDs.
* @param agentIds The agent IDs to heal.
*/
function heal(uint256[] calldata agentIds) external;
/**
* @notice Get the agent at the specified index.
* @return agent The agent at the specified index.
*/
function getAgent(uint256 index) external view returns (Agent memory agent);
/**
* @notice Returns the cost to heal the specified agents
* @dev The cost doubles for each time the agent is healed.
* @param agentIds The agent IDs to heal.
* @return cost The cost to heal the specified agents.
*/
function costToHeal(uint256[] calldata agentIds) external view returns (uint256 cost);
/**
* @notice Returns the reward for escaping the game.
* @param agentIds The agent IDs to escape.
* @return reward The reward for escaping the game.
*/
function escapeReward(uint256[] calldata agentIds) external view returns (uint256 reward);
/**
* @notice Returns the total number of agents alive.
*/
function agentsAlive() external view returns (uint256);
/**
* @notice Returns the index of a specific agent ID inside the agents mapping.
* @param agentId The agent ID.
* @return index The index of the agent ID.
*/
function agentIndex(uint256 agentId) external view returns (uint256 index);
/**
* @notice Returns a specific round's information.
* @param roundId The round ID.
* @return woundedAgentIds The agent IDs of the wounded agents in the specified round.
* @return healingAgentIds The agent IDs of the healing agents in the specified round.
*/
function getRoundInfo(
uint256 roundId
) external view returns (uint256[] memory woundedAgentIds, uint256[] memory healingAgentIds);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/**
* @title IOwnableTwoSteps
* @author LooksRare protocol team (👀,💎)
*/
interface IOwnableTwoSteps {
/**
* @notice This enum keeps track of the ownership status.
* @param NoOngoingTransfer The default status when the owner is set
* @param TransferInProgress The status when a transfer to a new owner is initialized
* @param RenouncementInProgress The status when a transfer to address(0) is initialized
*/
enum Status {
NoOngoingTransfer,
TransferInProgress,
RenouncementInProgress
}
/**
* @notice This is returned when there is no transfer of ownership in progress.
*/
error NoOngoingTransferInProgress();
/**
* @notice This is returned when the caller is not the owner.
*/
error NotOwner();
/**
* @notice This is returned when there is no renouncement in progress but
* the owner tries to validate the ownership renouncement.
*/
error RenouncementNotInProgress();
/**
* @notice This is returned when the transfer is already in progress but the owner tries
* initiate a new ownership transfer.
*/
error TransferAlreadyInProgress();
/**
* @notice This is returned when there is no ownership transfer in progress but the
* ownership change tries to be approved.
*/
error TransferNotInProgress();
/**
* @notice This is returned when the ownership transfer is attempted to be validated by the
* a caller that is not the potential owner.
*/
error WrongPotentialOwner();
/**
* @notice This is emitted if the ownership transfer is cancelled.
*/
event CancelOwnershipTransfer();
/**
* @notice This is emitted if the ownership renouncement is initiated.
*/
event InitiateOwnershipRenouncement();
/**
* @notice This is emitted if the ownership transfer is initiated.
* @param previousOwner Previous/current owner
* @param potentialOwner Potential/future owner
*/
event InitiateOwnershipTransfer(address previousOwner, address potentialOwner);
/**
* @notice This is emitted when there is a new owner.
*/
event NewOwner(address newOwner);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/**
* @title IReentrancyGuard
* @author LooksRare protocol team (👀,💎)
*/
interface IReentrancyGuard {
/**
* @notice This is returned when there is a reentrant call.
*/
error ReentrancyFail();
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;
// Enums
import {TokenType} from "../enums/TokenType.sol";
/**
* @title ITransferManager
* @author LooksRare protocol team (👀,💎)
*/
interface ITransferManager {
/**
* @notice This struct is only used for transferBatchItemsAcrossCollections.
* @param tokenAddress Token address
* @param tokenType 0 for ERC721, 1 for ERC1155
* @param itemIds Array of item ids to transfer
* @param amounts Array of amounts to transfer
*/
struct BatchTransferItem {
address tokenAddress;
TokenType tokenType;
uint256[] itemIds;
uint256[] amounts;
}
/**
* @notice It is emitted if operators' approvals to transfer NFTs are granted by a user.
* @param user Address of the user
* @param operators Array of operator addresses
*/
event ApprovalsGranted(address user, address[] operators);
/**
* @notice It is emitted if operators' approvals to transfer NFTs are revoked by a user.
* @param user Address of the user
* @param operators Array of operator addresses
*/
event ApprovalsRemoved(address user, address[] operators);
/**
* @notice It is emitted if a new operator is added to the global allowlist.
* @param operator Operator address
*/
event OperatorAllowed(address operator);
/**
* @notice It is emitted if an operator is removed from the global allowlist.
* @param operator Operator address
*/
event OperatorRemoved(address operator);
/**
* @notice It is returned if the operator to approve has already been approved by the user.
*/
error OperatorAlreadyApprovedByUser();
/**
* @notice It is returned if the operator to revoke has not been previously approved by the user.
*/
error OperatorNotApprovedByUser();
/**
* @notice It is returned if the transfer caller is already allowed by the owner.
* @dev This error can only be returned for owner operations.
*/
error OperatorAlreadyAllowed();
/**
* @notice It is returned if the operator to approve is not in the global allowlist defined by the owner.
* @dev This error can be returned if the user tries to grant approval to an operator address not in the
* allowlist or if the owner tries to remove the operator from the global allowlist.
*/
error OperatorNotAllowed();
/**
* @notice It is returned if the transfer caller is invalid.
* For a transfer called to be valid, the operator must be in the global allowlist and
* approved by the 'from' user.
*/
error TransferCallerInvalid();
/**
* @notice This function transfers ERC20 tokens.
* @param tokenAddress Token address
* @param from Sender address
* @param to Recipient address
* @param amount amount
*/
function transferERC20(
address tokenAddress,
address from,
address to,
uint256 amount
) external;
/**
* @notice This function transfers a single item for a single ERC721 collection.
* @param tokenAddress Token address
* @param from Sender address
* @param to Recipient address
* @param itemId Item ID
*/
function transferItemERC721(
address tokenAddress,
address from,
address to,
uint256 itemId
) external;
/**
* @notice This function transfers items for a single ERC721 collection.
* @param tokenAddress Token address
* @param from Sender address
* @param to Recipient address
* @param itemIds Array of itemIds
* @param amounts Array of amounts
*/
function transferItemsERC721(
address tokenAddress,
address from,
address to,
uint256[] calldata itemIds,
uint256[] calldata amounts
) external;
/**
* @notice This function transfers a single item for a single ERC1155 collection.
* @param tokenAddress Token address
* @param from Sender address
* @param to Recipient address
* @param itemId Item ID
* @param amount Amount
*/
function transferItemERC1155(
address tokenAddress,
address from,
address to,
uint256 itemId,
uint256 amount
) external;
/**
* @notice This function transfers items for a single ERC1155 collection.
* @param tokenAddress Token address
* @param from Sender address
* @param to Recipient address
* @param itemIds Array of itemIds
* @param amounts Array of amounts
* @dev It does not allow batch transferring if from = msg.sender since native function should be used.
*/
function transferItemsERC1155(
address tokenAddress,
address from,
address to,
uint256[] calldata itemIds,
uint256[] calldata amounts
) external;
/**
* @notice This function transfers items across an array of tokens that can be ERC20, ERC721 and ERC1155.
* @param items Array of BatchTransferItem
* @param from Sender address
* @param to Recipient address
*/
function transferBatchItemsAcrossCollections(
BatchTransferItem[] calldata items,
address from,
address to
) external;
/**
* @notice This function allows a user to grant approvals for an array of operators.
* Users cannot grant approvals if the operator is not allowed by this contract's owner.
* @param operators Array of operator addresses
* @dev Each operator address must be globally allowed to be approved.
*/
function grantApprovals(address[] calldata operators) external;
/**
* @notice This function allows a user to revoke existing approvals for an array of operators.
* @param operators Array of operator addresses
* @dev Each operator address must be approved at the user level to be revoked.
*/
function revokeApprovals(address[] calldata operators) external;
/**
* @notice This function allows an operator to be added for the shared transfer system.
* Once the operator is allowed, users can grant NFT approvals to this operator.
* @param operator Operator address to allow
* @dev Only callable by owner.
*/
function allowOperator(address operator) external;
/**
* @notice This function allows the user to remove an operator for the shared transfer system.
* @param operator Operator address to remove
* @dev Only callable by owner.
*/
function removeOperator(address operator) external;
/**
* @notice This returns whether the user has approved the operator address.
* The first address is the user and the second address is the operator.
*/
function hasUserApprovedOperator(address user, address operator) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0;
interface IWETH {
function deposit() external payable;
function transfer(address dst, uint256 wad) external returns (bool);
function withdraw(uint256 wad) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;
import {IInfiltration} from "./interfaces/IInfiltration.sol";
import {OwnableTwoSteps} from "@looksrare/contracts-libs/contracts/OwnableTwoSteps.sol";
import {IERC20} from "@looksrare/contracts-libs/contracts/interfaces/generic/IERC20.sol";
import {ProtocolFee} from "@looksrare/contracts-libs/contracts/ProtocolFee.sol";
import {PackableReentrancyGuard} from "@looksrare/contracts-libs/contracts/PackableReentrancyGuard.sol";
import {LowLevelERC20Transfer} from "@looksrare/contracts-libs/contracts/lowLevelCallers/LowLevelERC20Transfer.sol";
import {LowLevelWETH} from "@looksrare/contracts-libs/contracts/lowLevelCallers/LowLevelWETH.sol";
import {ITransferManager} from "@looksrare/contracts-transfer-manager/contracts/interfaces/ITransferManager.sol";
import {VRFCoordinatorV2Interface} from "@chainlink/contracts/src/v0.8/interfaces/VRFCoordinatorV2Interface.sol";
import {VRFConsumerBaseV2} from "@chainlink/contracts/src/v0.8/VRFConsumerBaseV2.sol";
import "erc721a/contracts/ERC721A.sol";
import {UnsafeMathUint256} from "./libraries/UnsafeMathUint256.sol";
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contract Infiltration is
IInfiltration,
OwnableTwoSteps,
ERC721A,
VRFConsumerBaseV2,
LowLevelERC20Transfer,
LowLevelWETH,
ProtocolFee,
PackableReentrancyGuard
{
using UnsafeMathUint256 for uint256;
/**
* @notice When the frontrun lock is unlocked, agents can escape or heal.
*/
uint8 private constant FRONTRUN_LOCK__UNLOCKED = 1;
/**
* @notice When the frontrun lock is locked, agents cannot escape or heal.
*/
uint8 private constant FRONTRUN_LOCK__LOCKED = 2;
/**
* @notice When VRF is being requested, agents cannot escape or heal. It unlocks when the randomness is fulfilled.
* @dev frontrunLock is initially set as locked so that agents cannot escape or heal before the game starts.
* It is unlocked when the first round's randomness is fulfilled.
*/
uint8 private frontrunLock = FRONTRUN_LOCK__LOCKED;
/**
* @notice 100% in basis points.
*/
uint256 private constant ONE_HUNDRED_PERCENT_IN_BASIS_POINTS = 10_000;
/**
* @notice 100% in basis points squared.
*/
uint256 private constant ONE_HUNDRED_PERCENT_IN_BASIS_POINTS_SQUARED = 10_000 ** 2;
/**
* @notice The number of secondary prize pool winners. Their entitled shares are based on their placements.
* When the number of active agents is less than or equal to this number, 1 agent is instantly killed
* in each round.
*/
uint256 private constant NUMBER_OF_SECONDARY_PRIZE_POOL_WINNERS = 50;
uint256 private constant PROBABILITY_PRECISION = 100_000_000;
/**
* @notice Max agent supply.
*/
uint256 public immutable MAX_SUPPLY;
/**
* @notice Max mint per address.
*/
uint256 public immutable MAX_MINT_PER_ADDRESS;
/**
* @notice The price of minting 1 agent.
*/
uint256 public immutable PRICE;
/**
* @notice The number of blocks per round.
*/
uint256 public immutable BLOCKS_PER_ROUND;
/**
* @notice The percentage of agents to wound per round in basis points.
*/
uint256 public immutable AGENTS_TO_WOUND_PER_ROUND_IN_BASIS_POINTS;
/**
* @notice The number of rounds for agents to be wounded before getting killed.
*/
uint256 public immutable ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD;
/**
* @notice This value is used as the denominator in healProbability.
*/
uint256 private immutable ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD_MINUS_ONE;
/**
* @notice This value is used as the minuend in healProbability.
*/
uint256 private immutable HEAL_PROBABILITY_MINUEND;
/**
* @notice The base cost of healing an agent. The cost increases for each successful heal.
*/
uint256 public immutable HEAL_BASE_COST;
/**
* @notice WETH address.
*/
address private immutable WETH;
/**
* @notice LOOKS address.
*/
address private immutable LOOKS;
/**
* @notice Chainlink VRF key hash.
*/
bytes32 private immutable KEY_HASH;
/**
* @notice Chainlink VRF coordinator.
*/
VRFCoordinatorV2Interface private immutable VRF_COORDINATOR;
/**
* @notice Chainlink VRF subscription ID.
*/
uint64 private immutable SUBSCRIPTION_ID;
/**
* @notice The transfer manager contract that manages LOOKS approvals.
*/
ITransferManager private immutable TRANSFER_MANAGER;
/**
* @notice The timestamp at which the mint period starts.
*/
uint40 public mintStart;
/**
* @notice The timestamp at which the mint period ends.
*/
uint40 public mintEnd;
/**
* @notice The bitmap of the placements of the secondary prize pool winners.
* @dev Only bit 1 to 50 are used. Bit 0 is not used.
*/
uint56 private prizesClaimedBitmap;
/**
* @notice The base URI of the collection.
*/
string private baseURI;
/**
* @notice Amount of agents minted per address.
*/
mapping(address minter => uint256 amount) public amountMintedPerAddress;
/**
* @notice Chainlink randomness requests.
*/
mapping(uint256 requestId => RandomnessRequest) public randomnessRequests;
/**
* @notice The mapping agents acts as an "array". In the beginning of the game, the "length" of the "array"
* is the total supply. As the game progresses, the "length" of the "array" decreases
* as agents are killed. The function agentsAlive() returns the "length" of the "array".
*
* When an Agent struct has 0 value for every field with its index within the total supply,
* it means that the agent is active.
*
* Index 0 is not used as agent ID starts from 1.
*/
mapping(uint256 index => Agent) private agents;
/**
* @notice It is used to find the index of an agent in the agents mapping given its agent ID.
* If the index is 0, it means the agent's index is the same as its agent ID as no swaps
* have been made.
*/
mapping(uint256 agentId => uint256 index) private agentIdToIndex;
/**
* @notice The maximum healing or wounded agents allowed per round.
*/
uint256 private constant MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND = 30;
/**
* @notice The maximum healing or wounded agents allowed per round + 1 for storing the array length.
*/
uint256 private constant MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND_AND_LENGTH = 31;
/**
* @notice The first element of the array is the length of the array.
*/
mapping(uint256 roundId => uint16[MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND_AND_LENGTH] agentIds)
private woundedAgentIdsPerRound;
/**
* @notice The first element of the array is the length of the array.
*/
mapping(uint256 roundId => uint16[MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND_AND_LENGTH] agentIds)
private healingAgentIdsPerRound;
/**
* @notice Game information.
*/
GameInfo public gameInfo;
/**
* @dev Agent struct status offset for bitwise operations.
*/
uint256 private constant AGENT__STATUS_OFFSET = 16;
/**
* @dev Agent struct wounded at offset for bitwise operations.
*/
uint256 private constant AGENT__WOUNDED_AT_OFFSET = 24;
/**
* @dev Agent struct heal count offset for bitwise operations.
*/
uint256 private constant AGENT__HEAL_COUNT_OFFSET = 64;
/**
* @dev GameInfo struct wounded agents offset for bitwise operations.
*/
uint256 private constant GAME_INFO__WOUNDED_AGENTS_OFFSET = 16;
/**
* @dev GameInfo struct healing agents offset for bitwise operations.
*/
uint256 private constant GAME_INFO__HEALING_AGENTS_OFFSET = 32;
/**
* @dev GameInfo struct dead agents offset for bitwise operations.
*/
uint256 private constant GAME_INFO__DEAD_AGENTS_OFFSET = 48;
/**
* @dev GameInfo struct escaped agents offset for bitwise operations.
*/
uint256 private constant GAME_INFO__ESCAPED_AGENTS_OFFSET = 64;
/**
* @dev GameInfo struct current round ID offset for bitwise operations.
*/
uint256 private constant GAME_INFO__CURRENT_ROUND_ID_OFFSET = 80;
/**
* @dev GameInfo struct current round block number offset for bitwise operations.
*/
uint256 private constant GAME_INFO__CURRENT_ROUND_BLOCK_NUMBER_OFFSET = 120;
/**
* @dev RandomnessRequest struct exists offset for bitwise operations.
*/
uint256 private constant RANDOMNESS_REQUESTS__EXISTS_OFFSET = 8;
/**
* @dev 2 bytes bitmask.
*/
uint256 private constant TWO_BYTES_BITMASK = 0xffff;
/**
* @dev 5 bytes bitmask.
*/
uint256 private constant FIVE_BYTES_BITMASK = 0xffffffffff;
/**
* @param constructorCalldata Constructor calldata. See IInfiltration.ConstructorCalldata for its key values.
*/
constructor(
ConstructorCalldata memory constructorCalldata
)
OwnableTwoSteps(constructorCalldata.owner)
ERC721A(constructorCalldata.name, constructorCalldata.symbol)
VRFConsumerBaseV2(constructorCalldata.vrfCoordinator)
{
if (
constructorCalldata.maxSupply <= NUMBER_OF_SECONDARY_PRIZE_POOL_WINNERS ||
constructorCalldata.maxSupply > type(uint16).max
) {
revert InvalidMaxSupply();
}
if (
(constructorCalldata.maxSupply * constructorCalldata.agentsToWoundPerRoundInBasisPoints) >
MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND * ONE_HUNDRED_PERCENT_IN_BASIS_POINTS
) {
revert WoundedAgentIdsPerRoundExceeded();
}
if (constructorCalldata.roundsToBeWoundedBeforeDead < 3) {
revert RoundsToBeWoundedBeforeDeadTooLow();
}
PRICE = constructorCalldata.price;
MAX_SUPPLY = constructorCalldata.maxSupply;
MAX_MINT_PER_ADDRESS = constructorCalldata.maxMintPerAddress;
BLOCKS_PER_ROUND = constructorCalldata.blocksPerRound;
AGENTS_TO_WOUND_PER_ROUND_IN_BASIS_POINTS = constructorCalldata.agentsToWoundPerRoundInBasisPoints;
ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD = constructorCalldata.roundsToBeWoundedBeforeDead;
// The next 2 values are used in healProbability
ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD_MINUS_ONE = ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD.unsafeSubtract(1);
HEAL_PROBABILITY_MINUEND =
((ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD * 99 - 80) * PROBABILITY_PRECISION) /
ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD_MINUS_ONE;
LOOKS = constructorCalldata.looks;
HEAL_BASE_COST = constructorCalldata.healBaseCost;
KEY_HASH = constructorCalldata.keyHash;
VRF_COORDINATOR = VRFCoordinatorV2Interface(constructorCalldata.vrfCoordinator);
SUBSCRIPTION_ID = constructorCalldata.subscriptionId;
TRANSFER_MANAGER = ITransferManager(constructorCalldata.transferManager);
WETH = constructorCalldata.weth;
baseURI = constructorCalldata.baseURI;
_updateProtocolFeeRecipient(constructorCalldata.protocolFeeRecipient);
_updateProtocolFeeBp(constructorCalldata.protocolFeeBp);
}
/**
* @dev updateProtocolFeeBp is not implemented in this contract.
*/
function updateProtocolFeeBp(uint16) external pure override {
revert Immutable();
}
/**
* @dev updateProtocolFeeRecipient is not implemented in this contract.
*/
function updateProtocolFeeRecipient(address) external pure override {
revert Immutable();
}
/**
* @inheritdoc IInfiltration
*/
function setMintPeriod(uint40 newMintStart, uint40 newMintEnd) external onlyOwner {
if (newMintStart >= newMintEnd) {
revert InvalidMintPeriod();
}
if (newMintStart != 0) {
if (block.timestamp > newMintStart) {
revert MintStartIsInThePast();
}
uint256 currentMintStart = mintStart;
if (currentMintStart != 0) {
if (block.timestamp >= currentMintStart) {
revert MintAlreadyStarted();
}
}
mintStart = newMintStart;
}
if (block.timestamp > newMintEnd || newMintEnd < mintEnd) {
revert MintCanOnlyBeExtended();
}
mintEnd = newMintEnd;
emit MintPeriodUpdated(newMintStart == 0 ? mintStart : newMintStart, newMintEnd);
}
/**
* @inheritdoc IInfiltration
* @notice As long as the game has not started (after mint end), the owner can still mint.
*/
function premint(address to, uint256 quantity) external payable onlyOwner {
_assertExactNativeTokensSupplied(quantity);
_assertTotalSupplyNotBreached(quantity);
_assertGameNotYetBegun();
_mintERC2309(to, quantity);
}
/**
* @inheritdoc IInfiltration
*/
function mint(uint256 quantity) external payable nonReentrant {
if (block.timestamp < mintStart || block.timestamp > mintEnd) {
revert NotInMintPeriod();
}
_assertGameNotYetBegun();
uint256 amountMinted = amountMintedPerAddress[msg.sender] + quantity;
if (amountMinted > MAX_MINT_PER_ADDRESS) {
revert TooManyMinted();
}
_assertExactNativeTokensSupplied(quantity);
_assertTotalSupplyNotBreached(quantity);
amountMintedPerAddress[msg.sender] = amountMinted;
_mintERC2309(msg.sender, quantity);
}
/**
* @inheritdoc IInfiltration
* @dev If Chainlink randomness callback does not come back after 1 day, we can call
* startNewRound to trigger a new randomness request.
*/
function startGame() external onlyOwner {
uint256 numberOfAgents = totalSupply();
if (numberOfAgents < MAX_SUPPLY) {
if (block.timestamp < mintEnd) {
revert StillMinting();
}
}
if (numberOfAgents < NUMBER_OF_SECONDARY_PRIZE_POOL_WINNERS) {
revert NotEnoughMinted();
}
_assertGameNotYetBegun();
gameInfo.currentRoundId = 1;
gameInfo.activeAgents = uint16(numberOfAgents);
uint256 balance = address(this).balance;
uint256 protocolFee = balance.unsafeMultiply(protocolFeeBp).unsafeDivide(ONE_HUNDRED_PERCENT_IN_BASIS_POINTS);
unchecked {
gameInfo.prizePool = balance - protocolFee;
}
emit RoundStarted(1);
_transferETHAndWrapIfFailWithGasLimit(WETH, protocolFeeRecipient, protocolFee, gasleft());
_requestForRandomness();
}
/**
* @inheritdoc IInfiltration
*/
function emergencyWithdraw() external onlyOwner {
uint256 activeAgents;
uint256 woundedAgents;
uint256 healingAgents;
uint256 escapedAgents;
uint256 deadAgents;
uint256 currentRoundId;
uint256 currentRoundBlockNumber;
assembly {
let gameInfoSlot0Value := sload(gameInfo.slot)
activeAgents := and(gameInfoSlot0Value, TWO_BYTES_BITMASK)
woundedAgents := and(shr(GAME_INFO__WOUNDED_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK)
healingAgents := and(shr(GAME_INFO__HEALING_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK)
escapedAgents := and(shr(GAME_INFO__ESCAPED_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK)
deadAgents := and(shr(GAME_INFO__DEAD_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK)
currentRoundId := and(shr(GAME_INFO__CURRENT_ROUND_ID_OFFSET, gameInfoSlot0Value), FIVE_BYTES_BITMASK)
currentRoundBlockNumber := and(
shr(GAME_INFO__CURRENT_ROUND_BLOCK_NUMBER_OFFSET, gameInfoSlot0Value),
FIVE_BYTES_BITMASK
)
}
bool conditionOne = currentRoundId != 0 &&
activeAgents + woundedAgents + healingAgents + escapedAgents + deadAgents != totalSupply();
// 50 blocks per round * 216 = 10,800 blocks which is roughly 36 hours
// Prefer not to hard code this number as BLOCKS_PER_ROUND is not always 50
bool conditionTwo = currentRoundId != 0 &&
activeAgents > 1 &&
block.number > currentRoundBlockNumber + BLOCKS_PER_ROUND * 216;
// Just in case startGame reverts, we can withdraw the ETH balance and redistribute to addresses that participated in the mint.
bool conditionThree = currentRoundId == 0 && block.timestamp > uint256(mintEnd).unsafeAdd(36 hours);
if (conditionOne || conditionTwo || conditionThree) {
uint256 ethBalance = address(this).balance;
_transferETHAndWrapIfFailWithGasLimit(WETH, msg.sender, ethBalance, gasleft());
uint256 looksBalance = IERC20(LOOKS).balanceOf(address(this));
_executeERC20DirectTransfer(LOOKS, msg.sender, looksBalance);
emit EmergencyWithdrawal(ethBalance, looksBalance);
}
}
/**
* @inheritdoc IInfiltration
* @dev If Chainlink randomness callback does not come back after 1 day, we can try by calling
* startNewRound again.
*/
function startNewRound() external nonReentrant {
uint256 currentRoundId = gameInfo.currentRoundId;
if (currentRoundId == 0) {
revert GameNotYetBegun();
}
if (block.number < uint256(gameInfo.currentRoundBlockNumber).unsafeAdd(BLOCKS_PER_ROUND)) {
revert TooEarlyToStartNewRound();
}
if (block.timestamp < uint256(gameInfo.randomnessLastRequestedAt).unsafeAdd(1 days)) {
revert TooEarlyToRetryRandomnessRequest();
}
uint256 agentsRemaining = agentsAlive();
uint256 activeAgents = gameInfo.activeAgents;
if (agentsRemaining == 1) {
if (activeAgents == 1) {
revert GameOver();
}
}
if (activeAgents <= NUMBER_OF_SECONDARY_PRIZE_POOL_WINNERS) {
uint256 woundedAgents = gameInfo.woundedAgents;
if (woundedAgents != 0) {
uint256 killRoundId = currentRoundId > ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD
? currentRoundId.unsafeSubtract(ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD)
: 1;
uint256 totalDeadAgentsFromKilling;
while (woundedAgentIdsPerRound[killRoundId][0] != 0) {
uint256 deadAgentsFromKilling = _killWoundedAgents({
currentRoundId: currentRoundId,
roundId: killRoundId,
currentRoundAgentsAlive: agentsRemaining
});
unchecked {
totalDeadAgentsFromKilling += deadAgentsFromKilling;
agentsRemaining -= deadAgentsFromKilling;
++killRoundId;
}
}
// This is equivalent to
// unchecked {
// gameInfo.deadAgents += uint16(totalDeadAgentsFromKilling);
// }
// gameInfo.woundedAgents = 0;
assembly {
let gameInfoSlot0Value := sload(gameInfo.slot)
let deadAgents := and(shr(GAME_INFO__DEAD_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK)
gameInfoSlot0Value := and(
gameInfoSlot0Value,
// This is equivalent to
// not(
// or(
// shl(GAME_INFO__WOUNDED_AGENTS_OFFSET, TWO_BYTES_BITMASK),
// shl(GAME_INFO__DEAD_AGENTS_OFFSET, TWO_BYTES_BITMASK)
// )
// )
0xffffffffffffffffffffffffffffffffffffffffffffffff0000ffff0000ffff
)
gameInfoSlot0Value := or(
gameInfoSlot0Value,
shl(GAME_INFO__DEAD_AGENTS_OFFSET, add(deadAgents, totalDeadAgentsFromKilling))
)
sstore(gameInfo.slot, gameInfoSlot0Value)
}
}
if (agentsRemaining > 1) {
_requestForRandomness();
} else {
_emitWonEventIfOnlyOneAgentRemaining(agentsRemaining, activeAgents);
}
} else {
_requestForRandomness();
}
}
/**
* @inheritdoc IInfiltration
*/
function claimGrandPrize() external nonReentrant {
_assertGameOver();
uint256 agentId = _agentIndexToId(agents[1], 1);
_assertAgentOwnership(agentId);
uint256 prizePool = gameInfo.prizePool;
if (prizePool == 0) {
revert NothingToClaim();
}
gameInfo.prizePool = 0;
_transferETHAndWrapIfFailWithGasLimit(WETH, msg.sender, prizePool, gasleft());
emit PrizeClaimed(agentId, address(0), prizePool);
}
/**
* @inheritdoc IInfiltration
*/
function claimSecondaryPrizes(uint256 agentId) external nonReentrant {
_assertGameOver();
_assertAgentOwnership(agentId);
uint256 placement = agentIndex(agentId);
_assertValidPlacement(placement);
uint56 _prizesClaimedBitmap = prizesClaimedBitmap;
if ((_prizesClaimedBitmap >> placement) & 1 != 0) {
revert NothingToClaim();
}
prizesClaimedBitmap = _prizesClaimedBitmap | uint56(1 << placement);
uint256 ethAmount = secondaryPrizePoolShareAmount(gameInfo.secondaryPrizePool, placement);
if (ethAmount != 0) {
_transferETHAndWrapIfFailWithGasLimit(WETH, msg.sender, ethAmount, gasleft());
emit PrizeClaimed(agentId, address(0), ethAmount);
}
uint256 secondaryLooksPrizePool = gameInfo.secondaryLooksPrizePool;
if (secondaryLooksPrizePool == 0) {
secondaryLooksPrizePool = IERC20(LOOKS).balanceOf(address(this));
if (secondaryLooksPrizePool == 0) {
return;
}
gameInfo.secondaryLooksPrizePool = secondaryLooksPrizePool;
}
uint256 looksAmount = secondaryPrizePoolShareAmount(secondaryLooksPrizePool, placement);
if (looksAmount != 0) {
_executeERC20DirectTransfer(LOOKS, msg.sender, looksAmount);
emit PrizeClaimed(agentId, LOOKS, looksAmount);
}
}
/**
* @inheritdoc IInfiltration
*/
function escape(uint256[] calldata agentIds) external nonReentrant {
_assertFrontrunLockIsOff();
uint256 agentIdsCount = agentIds.length;
_assertNotEmptyAgentIdsArrayProvided(agentIdsCount);
uint256 activeAgents = gameInfo.activeAgents;
uint256 activeAgentsAfterEscape = activeAgents - agentIdsCount;
_assertGameIsNotOverAfterEscape(activeAgentsAfterEscape);
uint256 currentRoundAgentsAlive = agentsAlive();
uint256 prizePool = gameInfo.prizePool;
uint256 secondaryPrizePool = gameInfo.secondaryPrizePool;
uint256 reward;
uint256[] memory rewards = new uint256[](agentIdsCount);
for (uint256 i; i < agentIdsCount; ) {
uint256 agentId = agentIds[i];
_assertAgentOwnership(agentId);
uint256 index = agentIndex(agentId);
_assertAgentStatus(agents[index], agentId, AgentStatus.Active);
uint256 totalEscapeValue = prizePool / currentRoundAgentsAlive;
uint256 rewardForPlayer = (totalEscapeValue * _escapeMultiplier(currentRoundAgentsAlive)) /
ONE_HUNDRED_PERCENT_IN_BASIS_POINTS;
rewards[i] = rewardForPlayer;
reward += rewardForPlayer;
uint256 rewardToSecondaryPrizePool = (totalEscapeValue.unsafeSubtract(rewardForPlayer) *
_escapeRewardSplitForSecondaryPrizePool(currentRoundAgentsAlive)) / ONE_HUNDRED_PERCENT_IN_BASIS_POINTS;
unchecked {
prizePool = prizePool - rewardForPlayer - rewardToSecondaryPrizePool;
}
secondaryPrizePool += rewardToSecondaryPrizePool;
_swap({
currentAgentIndex: index,
lastAgentIndex: currentRoundAgentsAlive,
agentId: agentId,
newStatus: AgentStatus.Escaped
});
unchecked {
--currentRoundAgentsAlive;
++i;
}
}
// This is equivalent to
// unchecked {
// gameInfo.activeAgents = uint16(activeAgentsAfterEscape);
// gameInfo.escapedAgents += uint16(agentIdsCount);
// }
assembly {
let gameInfoSlot0Value := sload(gameInfo.slot)
let escapedAgents := add(
and(shr(GAME_INFO__ESCAPED_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK),
agentIdsCount
)
gameInfoSlot0Value := and(
gameInfoSlot0Value,
// This is the equivalent of not(or(TWO_BYTES_BITMASK, shl(GAME_INFO__ESCAPED_AGENTS_OFFSET, TWO_BYTES_BITMASK)))
0xffffffffffffffffffffffffffffffffffffffffffff0000ffffffffffff0000
)
gameInfoSlot0Value := or(gameInfoSlot0Value, activeAgentsAfterEscape)
gameInfoSlot0Value := or(gameInfoSlot0Value, shl(GAME_INFO__ESCAPED_AGENTS_OFFSET, escapedAgents))
sstore(gameInfo.slot, gameInfoSlot0Value)
}
gameInfo.prizePool = prizePool;
gameInfo.secondaryPrizePool = secondaryPrizePool;
_transferETHAndWrapIfFailWithGasLimit(WETH, msg.sender, reward, gasleft());
emit Escaped(gameInfo.currentRoundId, agentIds, rewards);
_emitWonEventIfOnlyOneAgentRemaining(currentRoundAgentsAlive, activeAgentsAfterEscape);
}
/**
* @inheritdoc IInfiltration
*/
function heal(uint256[] calldata agentIds) external nonReentrant {
_assertFrontrunLockIsOff();
if (gameInfo.activeAgents <= NUMBER_OF_SECONDARY_PRIZE_POOL_WINNERS) {
revert HealingDisabled();
}
uint256 agentIdsCount = agentIds.length;
_assertNotEmptyAgentIdsArrayProvided(agentIdsCount);
uint256 currentRoundId = gameInfo.currentRoundId;
uint16[MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND_AND_LENGTH]
storage healingAgentIds = healingAgentIdsPerRound[currentRoundId];
uint256 currentHealingAgentIdsCount = healingAgentIds[0];
uint256 newHealingAgentIdsCount = currentHealingAgentIdsCount.unsafeAdd(agentIdsCount);
if (newHealingAgentIdsCount > MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND) {
revert MaximumHealingRequestPerRoundExceeded();
}
uint256 cost;
uint256[] memory costs = new uint256[](agentIdsCount);
for (uint256 i; i < agentIdsCount; ) {
uint256 agentId = agentIds[i];
uint256 index = agentIndex(agentId);
_assertAgentStatus(agents[index], agentId, AgentStatus.Wounded);
bytes32 agentSlot = _getAgentStorageSlot(index);
uint256 agentSlotValue;
uint256 woundedAt;
// This is equivalent to
// uint256 woundedAt = agent.woundedAt;
assembly {
agentSlotValue := sload(agentSlot)
woundedAt := and(shr(AGENT__WOUNDED_AT_OFFSET, agentSlotValue), FIVE_BYTES_BITMASK)
}
// This is equivalent to
// healCount = agent.healCount;
// agent.status = AgentStatus.Healing;
uint256 healCount;
assembly {
healCount := and(shr(AGENT__HEAL_COUNT_OFFSET, agentSlotValue), TWO_BYTES_BITMASK)
agentSlotValue := and(
agentSlotValue,
// This is the equivalent of not(shl(AGENT__STATUS_OFFSET, 0xff))
0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00ffff
)
agentSlotValue := or(
agentSlotValue,
// AgentStatus.Healing is 2
// This is equivalent to shl(AGENT__STATUS_OFFSET, 2)
0x20000
)
sstore(agentSlot, agentSlotValue)
}
costs[i] = _costToHeal(healCount);
cost += costs[i];
unchecked {
++i;
healingAgentIds[currentHealingAgentIdsCount + i] = uint16(agentId);
}
}
healingAgentIds[0] = uint16(newHealingAgentIdsCount);
// This is equivalent to
// unchecked {
// gameInfo.healingAgents += uint16(agentIdsCount);
// gameInfo.woundedAgents -= uint16(agentIdsCount);
// }
assembly {
let gameInfoSlot0Value := sload(gameInfo.slot)
let healingAgents := add(
and(shr(GAME_INFO__HEALING_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK),
agentIdsCount
)
let woundedAgents := sub(
and(shr(GAME_INFO__WOUNDED_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK),
agentIdsCount
)
gameInfoSlot0Value := and(
gameInfoSlot0Value,
// This is equivalent to
// not(
// or(
// shl(GAME_INFO__HEALING_AGENTS_OFFSET, TWO_BYTES_BITMASK),
// shl(GAME_INFO__WOUNDED_AGENTS_OFFSET, TWO_BYTES_BITMASK)
// )
// )
0xffffffffffffffffffffffffffffffffffffffffffffffffffff00000000ffff
)
gameInfoSlot0Value := or(gameInfoSlot0Value, shl(GAME_INFO__HEALING_AGENTS_OFFSET, healingAgents))
gameInfoSlot0Value := or(gameInfoSlot0Value, shl(GAME_INFO__WOUNDED_AGENTS_OFFSET, woundedAgents))
sstore(gameInfo.slot, gameInfoSlot0Value)
}
TRANSFER_MANAGER.transferERC20(LOOKS, msg.sender, address(this), cost);
_executeERC20DirectTransfer(LOOKS, 0x000000000000000000000000000000000000dEaD, cost / 4);
emit HealRequestSubmitted(currentRoundId, agentIds, costs);
}
/**
* @notice Only active and wounded agents are allowed to be transferred or traded.
* @param from The current owner of the token.
* @param to The new owner of the token.
* @param tokenId The token ID.
*/
function transferFrom(address from, address to, uint256 tokenId) public payable override {
AgentStatus status = agents[agentIndex(tokenId)].status;
if (status > AgentStatus.Wounded) {
revert InvalidAgentStatus(tokenId, status);
}
super.transferFrom(from, to, tokenId);
}
/**
* @inheritdoc IInfiltration
*/
function getAgent(uint256 index) external view returns (Agent memory agent) {
agent = agents[index];
agent.agentId = uint16(_agentIndexToId(agents[index], index));
}
/**
* @inheritdoc IInfiltration
* @dev Unlike the actual heal function, this function does not revert if duplicated agent IDs are provided.
*/
function costToHeal(uint256[] calldata agentIds) external view returns (uint256 cost) {
uint256 agentIdsCount = agentIds.length;
for (uint256 i; i < agentIdsCount; ) {
uint256 agentId = agentIds[i];
Agent storage agent = agents[agentIndex(agentId)];
_assertAgentStatus(agent, agentId, AgentStatus.Wounded);
cost += _costToHeal(agent.healCount);
unchecked {
++i;
}
}
}
/**
* @inheritdoc IInfiltration
* @dev Unlike the actual escape function, this function does not revert if duplicated agent IDs are provided.
*/
function escapeReward(uint256[] calldata agentIds) external view returns (uint256 reward) {
uint256 agentIdsCount = agentIds.length;
_assertGameIsNotOverAfterEscape(gameInfo.activeAgents - agentIdsCount);
uint256 currentRoundAgentsAlive = agentsAlive();
uint256 prizePool = gameInfo.prizePool;
uint256 secondaryPrizePool = gameInfo.secondaryPrizePool;
for (uint256 i; i < agentIdsCount; ) {
uint256 agentId = agentIds[i];
uint256 index = agentIndex(agentId);
_assertAgentStatus(agents[index], agentId, AgentStatus.Active);
uint256 totalEscapeValue = prizePool / currentRoundAgentsAlive;
uint256 rewardForPlayer = (totalEscapeValue * _escapeMultiplier(currentRoundAgentsAlive)) /
ONE_HUNDRED_PERCENT_IN_BASIS_POINTS;
reward += rewardForPlayer;
uint256 rewardToSecondaryPrizePool = (totalEscapeValue.unsafeSubtract(rewardForPlayer) *
_escapeRewardSplitForSecondaryPrizePool(currentRoundAgentsAlive)) / ONE_HUNDRED_PERCENT_IN_BASIS_POINTS;
secondaryPrizePool += rewardToSecondaryPrizePool;
unchecked {
prizePool = prizePool - rewardForPlayer - rewardToSecondaryPrizePool;
--currentRoundAgentsAlive;
++i;
}
}
}
/**
* @notice
*
* Variables:
* Attempted_Heal_Round - the round at which a user attempts to heal - this is x
* Heal_Rounds_Maximum - the maximum number of rounds after a user is wounded in which they can heal (ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD) - this is x2
* Heal_Rounds_Minimum - the minimum number of rounds after a user is wounded until they can heal (a user cannot heal the same round as wound, so we select one round after wound hence 1) - this is x1
* Maximum_Heal_Percentage - the maximum % chance a user can heal for, this will be if they heal in Heal_Rounds_Minimum (we have set this to 99% of a successful healing) - this is y1
* Minimum_Heal_Percentage - the minimum % chance a user can heal for, this will be if they heal in Heal_Rounds_Maximum (we have set this to 80% of a successful healing) - this is y2
*
* Equation:
* If you substitute all of these into the following equation:
* y = (( x * (y2-y1)) / (x2-x1)) + ((x2 * y1 - x1 * y2) / (x2 - x1))
* You will get an equation for y which is the PercentageChanceToHealSuccessfully given an Attempted_Heal_Round number.
* Explanation:
* i.e if a user is wounded in round 2, and they try to heal in round 4, their Attempted_Heal_Round relative to themselves is 2, hence by subsituting 2 into the place of x in the above equation, their PercentageChanceToHealSuccessfully will be 98.59574468%.
*
* @param healingRoundsDelay The number of rounds elapsed since the agent was wounded.
*/
function healProbability(uint256 healingRoundsDelay) public view returns (uint256 y) {
if (healingRoundsDelay == 0 || healingRoundsDelay > ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD) {
revert InvalidHealingRoundsDelay();
}
y =
HEAL_PROBABILITY_MINUEND -
((healingRoundsDelay * 19) * PROBABILITY_PRECISION) /
ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD_MINUS_ONE;
}
/**
* @notice The formula is 80 - 50 * PercentageOfAgentsRemaining ** 2.
*/
function escapeMultiplier() public view returns (uint256 multiplier) {
multiplier = _escapeMultiplier(agentsAlive());
}
/**
* @notice The formula is the lesser of (9,980 / 99) - (UsersRemaining / TotalUsers) * (8,000 / 99) and 100.
*/
function escapeRewardSplitForSecondaryPrizePool() public view returns (uint256 split) {
split = _escapeRewardSplitForSecondaryPrizePool(agentsAlive());
}
/**
* @notice An agent's secondary prize pool share amount. The formula is 1.31487 * 995 / (placement * 49) - 15 / 49.
* @param secondaryPrizePoolAmount The secondary prize pool amount.
* @param placement The agent's rank in the leaderboard. This is not meant to be called with placement that is not between 1 and NUMBER_OF_SECONDARY_PRIZE_POOL_WINNERS.
*/
function secondaryPrizePoolShareAmount(
uint256 secondaryPrizePoolAmount,
uint256 placement
) public pure returns (uint256 shareAmount) {
shareAmount =
(secondaryPrizePoolAmount * secondaryPrizePoolShareBp(placement)) /
ONE_HUNDRED_PERCENT_IN_BASIS_POINTS;
}
/**
* @notice An agent's secondary prize pool share in basis points. The formula is 1.31817 * 995 / (placement * 49) - 15 / 49.
* @param placement The agent's rank in the leaderboard. This is not meant to be called with placement that is not between 1 and NUMBER_OF_SECONDARY_PRIZE_POOL_WINNERS.
*/
function secondaryPrizePoolShareBp(uint256 placement) public pure returns (uint256 share) {
share = (1_31817 * (995_000_000 / (placement * 49) - uint256(15_000_000) / 49)) / 1_000_000_000;
}
/**
* @inheritdoc IInfiltration
*/
function agentsAlive() public view returns (uint256) {
return totalSupply() - gameInfo.deadAgents - gameInfo.escapedAgents;
}
/**
* @inheritdoc IInfiltration
*/
function agentIndex(uint256 agentId) public view returns (uint256 index) {
index = agentIdToIndex[agentId];
if (index == 0) {
index = agentId;
}
}
/**
* @inheritdoc IInfiltration
*/
function getRoundInfo(
uint256 roundId
) external view returns (uint256[] memory woundedAgentIds, uint256[] memory healingAgentIds) {
woundedAgentIds = _buildAgentIdsPerRoundArray(woundedAgentIdsPerRound[roundId]);
healingAgentIds = _buildAgentIdsPerRoundArray(healingAgentIdsPerRound[roundId]);
}
/**
* @param requestId The VRF request ID.
* @param randomWords The random words returned from Chainlink. We only request 1 random word.
*/
function fulfillRandomWords(uint256 requestId, uint256[] memory randomWords) internal override {
RandomnessRequest storage randomnessRequest = randomnessRequests[requestId];
uint256 currentRoundId = gameInfo.currentRoundId;
uint256 randomnessRequestRoundId = randomnessRequest.roundId;
if (
randomnessRequestRoundId != currentRoundId || randomnessRequest.status != RandomnessRequestStatus.Requested
) {
emit InvalidRandomnessFulfillment(requestId, randomnessRequestRoundId, currentRoundId);
return;
}
randomnessRequest.randomWord = randomWords[0];
randomnessRequest.status = RandomnessRequestStatus.Fulfilled;
emit RandomnessFulfilled(randomnessRequest.roundId, requestId);
}
/**
* @inheritdoc IInfiltration
*/
function closeRound(uint256 requestId) external {
uint256 currentRoundId = gameInfo.currentRoundId;
RandomnessRequest storage randomnessRequest = randomnessRequests[requestId];
if (
randomnessRequest.roundId != currentRoundId || randomnessRequest.status != RandomnessRequestStatus.Fulfilled
) {
revert InvalidRandomnessRequestId();
}
uint256 currentRandomWord = randomnessRequest.randomWord;
uint256 currentRoundAgentsAlive = agentsAlive();
uint256 activeAgents = gameInfo.activeAgents;
uint256 healingAgents = gameInfo.healingAgents;
uint256 deadAgentsFromHealing;
if (healingAgents != 0) {
uint256 healedAgents;
(healedAgents, deadAgentsFromHealing, currentRandomWord) = _healRequestFulfilled(
currentRoundId,
currentRoundAgentsAlive,
currentRandomWord
);
unchecked {
currentRoundAgentsAlive -= deadAgentsFromHealing;
activeAgents += healedAgents;
gameInfo.healingAgents = uint16(healingAgents - healedAgents - deadAgentsFromHealing);
}
}
if (activeAgents > NUMBER_OF_SECONDARY_PRIZE_POOL_WINNERS) {
uint256 woundedAgents = _woundRequestFulfilled(
currentRoundId,
currentRoundAgentsAlive,
activeAgents,
currentRandomWord
);
uint256 deadAgentsFromKilling;
if (currentRoundId > ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD) {
deadAgentsFromKilling = _killWoundedAgents({
currentRoundId: currentRoundId,
roundId: currentRoundId.unsafeSubtract(ROUNDS_TO_BE_WOUNDED_BEFORE_DEAD),
currentRoundAgentsAlive: currentRoundAgentsAlive
});
}
// We only need to deduct wounded agents from active agents, dead agents from killing are already inactive.
// This is equivalent to
// unchecked {
// gameInfo.activeAgents = activeAgents - woundedAgents;
// gameInfo.woundedAgents = gameInfo.woundedAgents + woundedAgents - deadAgentsFromKilling;
// gameInfo.deadAgents += (deadAgentsFromHealing + deadAgentsFromKilling);
// }
// SSTORE is called in _incrementRound
uint256 gameInfoSlot0Value;
assembly {
gameInfoSlot0Value := sload(gameInfo.slot)
let currentWoundedAgents := and(
shr(GAME_INFO__WOUNDED_AGENTS_OFFSET, gameInfoSlot0Value),
TWO_BYTES_BITMASK
)
let currentDeadAgents := and(shr(GAME_INFO__DEAD_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK)
gameInfoSlot0Value := and(
gameInfoSlot0Value,
// This is equivalent to
// not(
// or(
// TWO_BYTES_BITMASK,
// or(
// shl(GAME_INFO__WOUNDED_AGENTS_OFFSET, TWO_BYTES_BITMASK),
// shl(GAME_INFO__DEAD_AGENTS_OFFSET, TWO_BYTES_BITMASK)
// )
// )
// )
0xffffffffffffffffffffffffffffffffffffffffffffffff0000ffff00000000
)
gameInfoSlot0Value := or(gameInfoSlot0Value, sub(activeAgents, woundedAgents))
gameInfoSlot0Value := or(
gameInfoSlot0Value,
shl(
GAME_INFO__WOUNDED_AGENTS_OFFSET,
sub(add(currentWoundedAgents, woundedAgents), deadAgentsFromKilling)
)
)
gameInfoSlot0Value := or(
gameInfoSlot0Value,
shl(
GAME_INFO__DEAD_AGENTS_OFFSET,
add(currentDeadAgents, add(deadAgentsFromHealing, deadAgentsFromKilling))
)
)
}
_incrementRound(currentRoundId, gameInfoSlot0Value);
} else {
bool shouldKillOneAgent = activeAgents > 1;
if (shouldKillOneAgent) {
uint256 killedAgentIndex = (currentRandomWord % activeAgents).unsafeAdd(1);
Agent storage agentToKill = agents[killedAgentIndex];
uint256 agentId = _agentIndexToId(agentToKill, killedAgentIndex);
_swap({
currentAgentIndex: killedAgentIndex,
lastAgentIndex: currentRoundAgentsAlive,
agentId: agentId,
newStatus: AgentStatus.Dead
});
uint256[] memory killedAgentId = new uint256[](1);
killedAgentId[0] = agentId;
emit Killed(currentRoundId, killedAgentId);
unchecked {
--activeAgents;
--currentRoundAgentsAlive;
}
}
// This is equivalent to
// unchecked {
// gameInfo.activeAgents = activeAgents;
// gameInfo.deadAgents = gameInfo.deadAgents + deadAgentsFromHealing + 1;
// }
// SSTORE is called in _incrementRound
uint256 gameInfoSlot0Value;
assembly {
gameInfoSlot0Value := sload(gameInfo.slot)
let deadAgents := and(shr(GAME_INFO__DEAD_AGENTS_OFFSET, gameInfoSlot0Value), TWO_BYTES_BITMASK)
gameInfoSlot0Value := and(
gameInfoSlot0Value,
// This is equivalent to not(or(TWO_BYTES_BITMASK, shl(GAME_INFO__DEAD_AGENTS_OFFSET, TWO_BYTES_BITMASK)))
0xffffffffffffffffffffffffffffffffffffffffffffffff0000ffffffff0000
)
gameInfoSlot0Value := or(gameInfoSlot0Value, activeAgents)
// If shouldKillOneAgent is true, then add 1. If false, then add 0.
gameInfoSlot0Value := or(
gameInfoSlot0Value,
shl(GAME_INFO__DEAD_AGENTS_OFFSET, add(add(deadAgents, deadAgentsFromHealing), shouldKillOneAgent))
)
}
_emitWonEventIfOnlyOneAgentRemaining(currentRoundAgentsAlive, activeAgents);
_incrementRound(currentRoundId, gameInfoSlot0Value);
}
frontrunLock = FRONTRUN_LOCK__UNLOCKED;
unchecked {
emit RoundStarted(currentRoundId + 1);
}
}
/**
* @dev This function doesn't check currentRoundId to be <= type(uint40).max but it's fine as
* it's practically impossible to reach this number of rounds.
* @param currentRoundId The current round ID.
* @param gameInfoSlot0Value The value of gameInfo.slot.
*/
function _incrementRound(uint256 currentRoundId, uint256 gameInfoSlot0Value) private {
// This is equivalent to
// unchecked {
// uint256 newRoundId = currentRoundId + 1;
// gameInfo.currentRoundId = newRoundId;
// gameInfo.currentRoundBlockNumber = uint40(block.number);
// gameInfo.randomnessLastRequestedAt = 0;
// }
assembly {
gameInfoSlot0Value := and(
gameInfoSlot0Value,
// This is equivalent to
// let gameInfoRandomnessLastRequestedAtOffset := 160
// not(
// or(
// or(
// shl(GAME_INFO__CURRENT_ROUND_ID_OFFSET, FIVE_BYTES_BITMASK),
// shl(GAME_INFO__CURRENT_ROUND_BLOCK_NUMBER_OFFSET, FIVE_BYTES_BITMASK)
// ),
// shl(gameInfoRandomnessLastRequestedAtOffset, FIVE_BYTES_BITMASK)
// )
// )
0xffffffffffffff000000000000000000000000000000ffffffffffffffffffff
)
gameInfoSlot0Value := or(
gameInfoSlot0Value,
shl(GAME_INFO__CURRENT_ROUND_ID_OFFSET, add(currentRoundId, 1))
)
gameInfoSlot0Value := or(gameInfoSlot0Value, shl(GAME_INFO__CURRENT_ROUND_BLOCK_NUMBER_OFFSET, number()))
sstore(gameInfo.slot, gameInfoSlot0Value)
}
}
/**
* @dev This function requests for a random word from Chainlink VRF for wounding and healing.
*/
function _requestForRandomness() private {
uint256 requestId = VRF_COORDINATOR.requestRandomWords({
keyHash: KEY_HASH,
subId: SUBSCRIPTION_ID,
minimumRequestConfirmations: uint16(3),
callbackGasLimit: uint32(2_500_000),
numWords: uint32(1)
});
if (randomnessRequests[requestId].status != RandomnessRequestStatus.None) {
revert RandomnessRequestAlreadyExists();
}
uint40 currentRoundId = gameInfo.currentRoundId;
gameInfo.randomnessLastRequestedAt = uint40(block.timestamp);
// This is equivalent to
// randomnessRequests[requestId].status = RandomnessRequestStatus.Requested;
// randomnessRequests[requestId].roundId = currentRoundId;
assembly {
// 1 is RandomnessRequestStatus.Requested
let randomnessRequest := or(1, shl(RANDOMNESS_REQUESTS__EXISTS_OFFSET, currentRoundId))
mstore(0x00, requestId)
mstore(0x20, randomnessRequests.slot)
let randomnessRequestStoragSlot := keccak256(0x00, 0x40)
sstore(randomnessRequestStoragSlot, randomnessRequest)
}
frontrunLock = FRONTRUN_LOCK__LOCKED;
emit RandomnessRequested(currentRoundId, requestId);
}
/**
* @param roundId The current round ID.
* @param currentRoundAgentsAlive The number of agents alive currently.
* @param randomWord The random word returned from Chainlink.
* @return healedAgentsCount The number of agents that were healed.
* @return deadAgentsCount The number of agents that were killed.
* @return currentRandomWord The current random word after running the function.
*/
function _healRequestFulfilled(
uint256 roundId,
uint256 currentRoundAgentsAlive,
uint256 randomWord
) private returns (uint256 healedAgentsCount, uint256 deadAgentsCount, uint256 currentRandomWord) {
uint16[MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND_AND_LENGTH]
storage healingAgentIds = healingAgentIdsPerRound[roundId];
uint256 healingAgentIdsCount = healingAgentIds[0];
if (healingAgentIdsCount != 0) {
HealResult[] memory healResults = new HealResult[](healingAgentIdsCount);
for (uint256 i; i < healingAgentIdsCount; ) {
uint256 healingAgentId = healingAgentIds[i.unsafeAdd(1)];
uint256 index = agentIndex(healingAgentId);
Agent storage agent = agents[index];
healResults[i].agentId = healingAgentId;
// 1. An agent's "healing at" round ID is always equal to the current round ID
// as it immediately settles upon randomness fulfillment.
//
// 2. 10_000_000_000 == 100 * PROBABILITY_PRECISION
if (randomWord % 10_000_000_000 <= healProbability(roundId.unsafeSubtract(agent.woundedAt))) {
// This line is not needed as HealOutcome.Healed is 0. It is here for clarity.
// healResults[i].outcome = HealOutcome.Healed;
_healAgent(agent);
} else {
healResults[i].outcome = HealOutcome.Killed;
_swap({
currentAgentIndex: index,
lastAgentIndex: currentRoundAgentsAlive - deadAgentsCount,
agentId: healingAgentId,
newStatus: AgentStatus.Dead
});
unchecked {
++deadAgentsCount;
}
}
randomWord = _nextRandomWord(randomWord);
unchecked {
++i;
}
}
unchecked {
healedAgentsCount = healingAgentIdsCount - deadAgentsCount;
}
emit HealRequestFulfilled(roundId, healResults);
}
currentRandomWord = randomWord;
}
/**
* @param roundId The current round ID.
* @param currentRoundAgentsAlive The number of agents alive currently.
* @param activeAgents The number of currently active agents.
* @param randomWord The random word returned from Chainlink.
* @return woundedAgentsCount The number of agents that were wounded.
*/
function _woundRequestFulfilled(
uint256 roundId,
uint256 currentRoundAgentsAlive,
uint256 activeAgents,
uint256 randomWord
) private returns (uint256 woundedAgentsCount) {
woundedAgentsCount =
(activeAgents * AGENTS_TO_WOUND_PER_ROUND_IN_BASIS_POINTS) /
ONE_HUNDRED_PERCENT_IN_BASIS_POINTS;
// At some point the number of agents to wound will be 0 due to round down, so we set it to 1.
if (woundedAgentsCount == 0) {
woundedAgentsCount = 1;
}
uint256[] memory woundedAgentIds = new uint256[](woundedAgentsCount);
uint16[MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND_AND_LENGTH]
storage currentRoundWoundedAgentIds = woundedAgentIdsPerRound[roundId];
for (uint256 i; i < woundedAgentsCount; ) {
uint256 woundedAgentIndex = (randomWord % currentRoundAgentsAlive).unsafeAdd(1);
Agent storage agentToWound = agents[woundedAgentIndex];
if (agentToWound.status == AgentStatus.Active) {
// This is equivalent to
// agentToWound.status = AgentStatus.Wounded;
// agentToWound.woundedAt = roundId;
assembly {
let agentSlotValue := sload(agentToWound.slot)
agentSlotValue := and(
agentSlotValue,
// This is equivalent to
// or(
// TWO_BYTES_BITMASK,
// shl(64, TWO_BYTES_BITMASK)
// )
0x00000000000000000000000000000000000000000000ffff000000000000ffff
)
// AgentStatus.Wounded is 1
agentSlotValue := or(agentSlotValue, shl(AGENT__STATUS_OFFSET, 1))
agentSlotValue := or(agentSlotValue, shl(AGENT__WOUNDED_AT_OFFSET, roundId))
sstore(agentToWound.slot, agentSlotValue)
}
uint256 woundedAgentId = _agentIndexToId(agentToWound, woundedAgentIndex);
woundedAgentIds[i] = woundedAgentId;
unchecked {
++i;
currentRoundWoundedAgentIds[i] = uint16(woundedAgentId);
}
}
randomWord = _nextRandomWord(randomWord);
}
currentRoundWoundedAgentIds[0] = uint16(woundedAgentsCount);
emit Wounded(roundId, woundedAgentIds);
}
/**
* @dev This function emits the Killed event but some agent IDs in the array can be 0 because
* they might have been healed or are dead already.
* @param currentRoundId The current round ID.
* @param roundId The round ID in which the wounded agents should be killed.
* @param currentRoundAgentsAlive The number of agents alive currently.
* @return deadAgentsCount The number of agents that were killed.
*/
function _killWoundedAgents(
uint256 currentRoundId,
uint256 roundId,
uint256 currentRoundAgentsAlive
) private returns (uint256 deadAgentsCount) {
uint16[MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND_AND_LENGTH]
storage woundedAgentIdsInRound = woundedAgentIdsPerRound[roundId];
uint256 woundedAgentIdsCount = woundedAgentIdsInRound[0];
uint256[] memory woundedAgentIds = new uint256[](woundedAgentIdsCount);
for (uint256 i; i < woundedAgentIdsCount; ) {
uint256 woundedAgentId = woundedAgentIdsInRound[i.unsafeAdd(1)];
uint256 index = agentIndex(woundedAgentId);
Agent storage agent = agents[index];
if (agent.status == AgentStatus.Wounded) {
if (agent.woundedAt == roundId) {
woundedAgentIds[i] = woundedAgentId;
_swap({
currentAgentIndex: index,
lastAgentIndex: currentRoundAgentsAlive - deadAgentsCount,
agentId: woundedAgentId,
newStatus: AgentStatus.Dead
});
unchecked {
++deadAgentsCount;
}
}
}
unchecked {
++i;
}
}
emit Killed(currentRoundId, woundedAgentIds);
}
/**
* @param agent The agent to check.
* @param index The agent's index in the agents mapping.
* @return agentId The agent's ID.
*/
function _agentIndexToId(Agent storage agent, uint256 index) private view returns (uint256 agentId) {
agentId = agent.agentId;
agentId = agentId == 0 ? index : agentId;
}
/**
* @param healCount The number of times the agent has been successfully healed.
* @return cost The cost to heal the agent based on the agent's successful heal count.
*/
function _costToHeal(uint256 healCount) private view returns (uint256 cost) {
cost = HEAL_BASE_COST * (2 ** healCount);
}
/**
* @param agent The agent to heal.
*/
function _healAgent(Agent storage agent) private {
// This is equivalent to
// agent.status = AgentStatus.Active;
// agent.woundedAt = 0;
// lastHealCount = agent.healCount;
// ++agent.healCount;
assembly {
let agentSlotValue := sload(agent.slot)
let lastHealCount := and(shr(AGENT__HEAL_COUNT_OFFSET, agentSlotValue), TWO_BYTES_BITMASK)
agentSlotValue := and(agentSlotValue, TWO_BYTES_BITMASK)
agentSlotValue := or(agentSlotValue, shl(AGENT__HEAL_COUNT_OFFSET, add(lastHealCount, 1)))
sstore(agent.slot, agentSlotValue)
}
}
/**
* @notice An agent is killed by swapping it with the last agent in the agents mapping and decrementing `agentsAlive`
* by adding 1 to `gameInfo.deadAgents`.
* @notice An agent escapes by swapping it with the last agent in the agents mapping and decrementing `agentsAlive`
* by adding 1 to `gameInfo.escapedAgents`.
* @param currentAgentIndex The agent (whose status is being updated)'s index in the agents mapping.
* @param lastAgentIndex Last agent's index in the agents mapping.
* @param agentId The agent (whose status is being updated) 's ID.
* @param newStatus The new status of the agent.
*/
function _swap(uint256 currentAgentIndex, uint256 lastAgentIndex, uint256 agentId, AgentStatus newStatus) private {
Agent storage lastAgent = agents[lastAgentIndex];
uint256 lastAgentId = _agentIndexToId(lastAgent, lastAgentIndex);
agentIdToIndex[agentId] = lastAgentIndex;
agentIdToIndex[lastAgentId] = currentAgentIndex;
/**
* If last agent's agent ID is 0 that means it was never touched and is active.
*
* This is equivalent to
*
* agent.agentId = uint16(lastAgentId);
* agent.status = lastAgent.status;
* agent.woundedAt = lastAgent.woundedAt;
* agent.healCount = lastAgent.healCount;
* lastAgent.agentId = uint16(agentId);
* lastAgent.status = newStatus;
* lastAgent.woundedAt = 0;
* lastAgent.healCount = 0;
*/
bytes32 currentAgentSlot = _getAgentStorageSlot(currentAgentIndex);
bytes32 lastAgentSlot = _getAgentStorageSlot(lastAgentIndex);
assembly {
let lastAgentCurrentValue := sload(lastAgentSlot)
// The last agent's ID is either 0 or lastAgentId, so we do not need to clear the last 16 bits
// as it can only be or(0, lastAgentId) or or(lastAgentId, lastAgentId) which both ends up being lastAgentId.
lastAgentCurrentValue := or(lastAgentCurrentValue, lastAgentId)
sstore(currentAgentSlot, lastAgentCurrentValue)
let lastAgentNewValue := agentId
lastAgentNewValue := or(lastAgentNewValue, shl(AGENT__STATUS_OFFSET, newStatus))
sstore(lastAgentSlot, lastAgentNewValue)
}
}
/**
* @notice Returns the next random word by hashing.
* @param randomWord The current random word.
* @return nextRandomWord The next random word.
*/
function _nextRandomWord(uint256 randomWord) private pure returns (uint256 nextRandomWord) {
// This is equivalent to
// randomWord = uint256(keccak256(abi.encode(randomWord)));
assembly {
mstore(0x00, randomWord)
nextRandomWord := keccak256(0x00, 0x20)
}
}
/**
* @param index The agent's index in the agents mapping.
* @return agentStorageSlot The agent's storage slot.
*/
function _getAgentStorageSlot(uint256 index) private pure returns (bytes32 agentStorageSlot) {
assembly {
mstore(0x00, index)
mstore(0x20, agents.slot)
agentStorageSlot := keccak256(0x00, 0x40)
}
}
/**
* @dev ONE_HUNDRED_PERCENT_IN_BASIS_POINTS is used as an amplifier to prevent a loss of precision.
* @param agentsRemaining The number of agents remaining including wounded and healing agents.
* @return multiplier The escape multiplier in basis points. This portion of the reward goes to the owner of the escaping agent.
*/
function _escapeMultiplier(uint256 agentsRemaining) private view returns (uint256 multiplier) {
multiplier =
((80 *
ONE_HUNDRED_PERCENT_IN_BASIS_POINTS_SQUARED -
50 *
(((agentsRemaining * ONE_HUNDRED_PERCENT_IN_BASIS_POINTS) / totalSupply()) ** 2)) * 100) /
ONE_HUNDRED_PERCENT_IN_BASIS_POINTS_SQUARED;
}
/**
* @dev ONE_HUNDRED_PERCENT_IN_BASIS_POINTS is used as an amplifier to prevent a loss of precision.
* @param agentsRemaining The number of agents remaining including wounded and healing agents.
* @return split The split of the remaining escape reward between the the secondary prize pool and the main prize pool in basis points.
*/
function _escapeRewardSplitForSecondaryPrizePool(uint256 agentsRemaining) private view returns (uint256 split) {
split =
((9_980 * ONE_HUNDRED_PERCENT_IN_BASIS_POINTS) /
99 -
(((agentsRemaining * ONE_HUNDRED_PERCENT_IN_BASIS_POINTS) / totalSupply()) * uint256(8_000)) /
99) /
100;
if (split > ONE_HUNDRED_PERCENT_IN_BASIS_POINTS) {
split = ONE_HUNDRED_PERCENT_IN_BASIS_POINTS;
}
}
/**
* @dev Emit the Won event if there is only 1 active agent remaining in the game.
* @param agentsRemaining The number of alive agents.
* @param activeAgentsRemaining The number of active agents remaining.
*/
function _emitWonEventIfOnlyOneAgentRemaining(uint256 agentsRemaining, uint256 activeAgentsRemaining) private {
if (agentsRemaining == 1) {
if (activeAgentsRemaining == 1) {
emit Won(gameInfo.currentRoundId, _agentIndexToId(agents[1], 1));
}
}
}
/**
* @notice Validate max supply is not breached after minting "quantity" amount of agents
* @param quantity The quantity of agents to mint.
*/
function _assertTotalSupplyNotBreached(uint256 quantity) private view {
if (totalSupply() + quantity > MAX_SUPPLY) {
revert ExceededTotalSupply();
}
}
/**
* @notice Validate the game has not begun.
*/
function _assertGameNotYetBegun() private view {
if (gameInfo.currentRoundId != 0) {
revert GameAlreadyBegun();
}
}
/**
* @notice Validate exact ETH amount has been paid for the mint.
* @param quantity The quantity of agents to mint.
*/
function _assertExactNativeTokensSupplied(uint256 quantity) private view {
if (quantity * PRICE != msg.value) {
revert InexactNativeTokensSupplied();
}
}
/**
* @notice Validate the msg.sender is the owner of the agent ID.
* @param agentId The agent ID to validate.
*/
function _assertAgentOwnership(uint256 agentId) private view {
if (ownerOf(agentId) != msg.sender) {
revert NotAgentOwner();
}
}
/**
* @notice Validate the agent's status is the expected status.
* @param agent The agent to validate.
* @param agentId The agent's ID.
* @param status The expected status.
*/
function _assertAgentStatus(Agent storage agent, uint256 agentId, AgentStatus status) private view {
if (agent.status != status) {
revert InvalidAgentStatus(agentId, status);
}
}
/**
* @notice Validate the placement is between 1 and 50.
* @param placement The placement to validate.
*/
function _assertValidPlacement(uint256 placement) private pure {
if (placement == 0 || placement > NUMBER_OF_SECONDARY_PRIZE_POOL_WINNERS) {
revert InvalidPlacement();
}
}
/**
* @notice Validate the game is over by checking there is only 1 active agent and 0 wounded/healing agents.
*/
function _assertGameOver() private view {
if (gameInfo.activeAgents != 1 || gameInfo.woundedAgents != 0 || gameInfo.healingAgents != 0) {
revert GameIsStillRunning();
}
}
/**
* @notice Validate the frontrun lock is off.
*/
function _assertFrontrunLockIsOff() private view {
if (frontrunLock == FRONTRUN_LOCK__LOCKED) {
revert FrontrunLockIsOn();
}
}
/**
* @notice Validate the agent IDs array is not empty.
*/
function _assertNotEmptyAgentIdsArrayProvided(uint256 agentIdsCount) private pure {
if (agentIdsCount == 0) {
revert NoAgentsProvided();
}
}
/**
* @notice Validate the game's active agents to be greater than 0 after escape.
*/
function _assertGameIsNotOverAfterEscape(uint256 activeAgentsAfterEscape) private pure {
if (activeAgentsAfterEscape < 1) {
revert NoAgentsLeft();
}
}
/**
* @notice The starting token ID is 1.
*/
function _startTokenId() internal pure override returns (uint256) {
return 1;
}
/**
* @notice The base URI of the collection.
*/
function _baseURI() internal view override returns (string memory) {
return baseURI;
}
/**
* @param agentIdsPerRound The storage pointer to either a round's woundedAgentIdsPerRound or healingAgentIdsPerRound.
* @return agentIds The agent IDs (now dynamically sized) in the round with the length removed.
*/
function _buildAgentIdsPerRoundArray(
uint16[MAXIMUM_HEALING_OR_WOUNDED_AGENTS_PER_ROUND_AND_LENGTH] storage agentIdsPerRound
) private view returns (uint256[] memory agentIds) {
uint256 count = agentIdsPerRound[0];
agentIds = new uint256[](count);
for (uint256 i; i < count; ) {
unchecked {
agentIds[i] = agentIdsPerRound[i + 1];
++i;
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
// Interfaces
import {IERC20} from "../interfaces/generic/IERC20.sol";
// Errors
import {ERC20TransferFail, ERC20TransferFromFail} from "../errors/LowLevelErrors.sol";
import {NotAContract} from "../errors/GenericErrors.sol";
/**
* @title LowLevelERC20Transfer
* @notice This contract contains low-level calls to transfer ERC20 tokens.
* @author LooksRare protocol team (👀,💎)
*/
contract LowLevelERC20Transfer {
/**
* @notice Execute ERC20 transferFrom
* @param currency Currency address
* @param from Sender address
* @param to Recipient address
* @param amount Amount to transfer
*/
function _executeERC20TransferFrom(address currency, address from, address to, uint256 amount) internal {
if (currency.code.length == 0) {
revert NotAContract();
}
(bool status, bytes memory data) = currency.call(abi.encodeCall(IERC20.transferFrom, (from, to, amount)));
if (!status) {
revert ERC20TransferFromFail();
}
if (data.length > 0) {
if (!abi.decode(data, (bool))) {
revert ERC20TransferFromFail();
}
}
}
/**
* @notice Execute ERC20 (direct) transfer
* @param currency Currency address
* @param to Recipient address
* @param amount Amount to transfer
*/
function _executeERC20DirectTransfer(address currency, address to, uint256 amount) internal {
if (currency.code.length == 0) {
revert NotAContract();
}
(bool status, bytes memory data) = currency.call(abi.encodeCall(IERC20.transfer, (to, amount)));
if (!status) {
revert ERC20TransferFail();
}
if (data.length > 0) {
if (!abi.decode(data, (bool))) {
revert ERC20TransferFail();
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/**
* @notice It is emitted if the ETH transfer fails.
*/
error ETHTransferFail();
/**
* @notice It is emitted if the ERC20 approval fails.
*/
error ERC20ApprovalFail();
/**
* @notice It is emitted if the ERC20 transfer fails.
*/
error ERC20TransferFail();
/**
* @notice It is emitted if the ERC20 transferFrom fails.
*/
error ERC20TransferFromFail();
/**
* @notice It is emitted if the ERC721 transferFrom fails.
*/
error ERC721TransferFromFail();
/**
* @notice It is emitted if the ERC1155 safeTransferFrom fails.
*/
error ERC1155SafeTransferFromFail();
/**
* @notice It is emitted if the ERC1155 safeBatchTransferFrom fails.
*/
error ERC1155SafeBatchTransferFromFail();
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
// Interfaces
import {IWETH} from "../interfaces/generic/IWETH.sol";
/**
* @title LowLevelWETH
* @notice This contract contains a function to transfer ETH with an option to wrap to WETH.
* If the ETH transfer fails within a gas limit, the amount in ETH is wrapped to WETH and then transferred.
* @author LooksRare protocol team (👀,💎)
*/
contract LowLevelWETH {
/**
* @notice It transfers ETH to a recipient with a specified gas limit.
* If the original transfers fails, it wraps to WETH and transfers the WETH to recipient.
* @param _WETH WETH address
* @param _to Recipient address
* @param _amount Amount to transfer
* @param _gasLimit Gas limit to perform the ETH transfer
*/
function _transferETHAndWrapIfFailWithGasLimit(
address _WETH,
address _to,
uint256 _amount,
uint256 _gasLimit
) internal {
bool status;
assembly {
status := call(_gasLimit, _to, _amount, 0, 0, 0, 0)
}
if (!status) {
IWETH(_WETH).deposit{value: _amount}();
IWETH(_WETH).transfer(_to, _amount);
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
// Interfaces
import {IOwnableTwoSteps} from "./interfaces/IOwnableTwoSteps.sol";
/**
* @title OwnableTwoSteps
* @notice This contract offers transfer of ownership in two steps with potential owner
* having to confirm the transaction to become the owner.
* Renouncement of the ownership is also a two-step process since the next potential owner is the address(0).
* @author LooksRare protocol team (👀,💎)
*/
abstract contract OwnableTwoSteps is IOwnableTwoSteps {
/**
* @notice Address of the current owner.
*/
address public owner;
/**
* @notice Address of the potential owner.
*/
address public potentialOwner;
/**
* @notice Ownership status.
*/
Status public ownershipStatus;
/**
* @notice Modifier to wrap functions for contracts that inherit this contract.
*/
modifier onlyOwner() {
_onlyOwner();
_;
}
/**
* @notice Constructor
* @param _owner The contract's owner
*/
constructor(address _owner) {
owner = _owner;
emit NewOwner(_owner);
}
/**
* @notice This function is used to cancel the ownership transfer.
* @dev This function can be used for both cancelling a transfer to a new owner and
* cancelling the renouncement of the ownership.
*/
function cancelOwnershipTransfer() external onlyOwner {
Status _ownershipStatus = ownershipStatus;
if (_ownershipStatus == Status.NoOngoingTransfer) {
revert NoOngoingTransferInProgress();
}
if (_ownershipStatus == Status.TransferInProgress) {
delete potentialOwner;
}
delete ownershipStatus;
emit CancelOwnershipTransfer();
}
/**
* @notice This function is used to confirm the ownership renouncement.
*/
function confirmOwnershipRenouncement() external onlyOwner {
if (ownershipStatus != Status.RenouncementInProgress) {
revert RenouncementNotInProgress();
}
delete owner;
delete ownershipStatus;
emit NewOwner(address(0));
}
/**
* @notice This function is used to confirm the ownership transfer.
* @dev This function can only be called by the current potential owner.
*/
function confirmOwnershipTransfer() external {
if (ownershipStatus != Status.TransferInProgress) {
revert TransferNotInProgress();
}
if (msg.sender != potentialOwner) {
revert WrongPotentialOwner();
}
owner = msg.sender;
delete ownershipStatus;
delete potentialOwner;
emit NewOwner(msg.sender);
}
/**
* @notice This function is used to initiate the transfer of ownership to a new owner.
* @param newPotentialOwner New potential owner address
*/
function initiateOwnershipTransfer(address newPotentialOwner) external onlyOwner {
if (ownershipStatus != Status.NoOngoingTransfer) {
revert TransferAlreadyInProgress();
}
ownershipStatus = Status.TransferInProgress;
potentialOwner = newPotentialOwner;
/**
* @dev This function can only be called by the owner, so msg.sender is the owner.
* We don't have to SLOAD the owner again.
*/
emit InitiateOwnershipTransfer(msg.sender, newPotentialOwner);
}
/**
* @notice This function is used to initiate the ownership renouncement.
*/
function initiateOwnershipRenouncement() external onlyOwner {
if (ownershipStatus != Status.NoOngoingTransfer) {
revert TransferAlreadyInProgress();
}
ownershipStatus = Status.RenouncementInProgress;
emit InitiateOwnershipRenouncement();
}
function _onlyOwner() private view {
if (msg.sender != owner) revert NotOwner();
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
// Interfaces
import {IReentrancyGuard} from "./interfaces/IReentrancyGuard.sol";
/**
* @title PackableReentrancyGuard
* @notice This contract protects against reentrancy attacks.
* It is adjusted from OpenZeppelin.
* The only difference between this contract and ReentrancyGuard
* is that _status is uint8 instead of uint256 so that it can be
* packed with other contracts' storage variables.
* @author LooksRare protocol team (👀,💎)
*/
abstract contract PackableReentrancyGuard is IReentrancyGuard {
uint8 private _status;
/**
* @notice Modifier to wrap functions to prevent reentrancy calls.
*/
modifier nonReentrant() {
if (_status == 2) {
revert ReentrancyFail();
}
_status = 2;
_;
_status = 1;
}
constructor() {
_status = 1;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/**
* @title ProtocolFee
* @notice This contract makes it possible for a contract to charge a protocol fee.
* @author LooksRare protocol team (👀,💎)
*/
abstract contract ProtocolFee {
/**
* @dev Emitted when the protocol fee basis points is updated.
*/
event ProtocolFeeBpUpdated(uint16 protocolFeeBp);
/**
* @dev Emitted when the protocol fee recipient is updated.
*/
event ProtocolFeeRecipientUpdated(address protocolFeeRecipient);
/**
* @dev This error is used when the protocol fee basis points is too high
* or when the protocol fee recipient is a zero address.
*/
error ProtocolFee__InvalidValue();
/**
* @notice The maximum protocol fee in basis points, which is 25%.
*/
uint16 public constant MAXIMUM_PROTOCOL_FEE_BP = 2_500;
/**
* @notice The address of the protocol fee recipient.
*/
address public protocolFeeRecipient;
/**
* @notice The protocol fee basis points.
*/
uint16 public protocolFeeBp;
/**
* @dev This function is used to update the protocol fee recipient. It should be overridden
* by the contract that inherits from this contract. The function should be guarded
* by an access control mechanism to prevent unauthorized users from calling it.
* @param _protocolFeeRecipient The address of the protocol fee recipient
*/
function updateProtocolFeeRecipient(address _protocolFeeRecipient) external virtual;
/**
* @dev This function is used to update the protocol fee basis points. It should be overridden
* by the contract that inherits from this contract. The function should be guarded
* by an access control mechanism to prevent unauthorized users from calling it.
* @param _protocolFeeBp The protocol fee basis points
*/
function updateProtocolFeeBp(uint16 _protocolFeeBp) external virtual;
/**
* @param _protocolFeeRecipient The new protocol fee recipient address
*/
function _updateProtocolFeeRecipient(address _protocolFeeRecipient) internal {
if (_protocolFeeRecipient == address(0)) {
revert ProtocolFee__InvalidValue();
}
protocolFeeRecipient = _protocolFeeRecipient;
emit ProtocolFeeRecipientUpdated(_protocolFeeRecipient);
}
/**
* @param _protocolFeeBp The new protocol fee in basis points
*/
function _updateProtocolFeeBp(uint16 _protocolFeeBp) internal {
if (_protocolFeeBp > MAXIMUM_PROTOCOL_FEE_BP) {
revert ProtocolFee__InvalidValue();
}
protocolFeeBp = _protocolFeeBp;
emit ProtocolFeeBpUpdated(_protocolFeeBp);
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;
enum TokenType {
ERC20,
ERC721,
ERC1155
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;
library UnsafeMathUint256 {
function unsafeAdd(uint256 a, uint256 b) internal pure returns (uint256) {
unchecked {
return a + b;
}
}
function unsafeSubtract(uint256 a, uint256 b) internal pure returns (uint256) {
unchecked {
return a - b;
}
}
function unsafeMultiply(uint256 a, uint256 b) internal pure returns (uint256) {
unchecked {
return a * b;
}
}
function unsafeDivide(uint256 a, uint256 b) internal pure returns (uint256) {
unchecked {
return a / b;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/** ****************************************************************************
* @notice Interface for contracts using VRF randomness
* *****************************************************************************
* @dev PURPOSE
*
* @dev Reggie the Random Oracle (not his real job) wants to provide randomness
* @dev to Vera the verifier in such a way that Vera can be sure he's not
* @dev making his output up to suit himself. Reggie provides Vera a public key
* @dev to which he knows the secret key. Each time Vera provides a seed to
* @dev Reggie, he gives back a value which is computed completely
* @dev deterministically from the seed and the secret key.
*
* @dev Reggie provides a proof by which Vera can verify that the output was
* @dev correctly computed once Reggie tells it to her, but without that proof,
* @dev the output is indistinguishable to her from a uniform random sample
* @dev from the output space.
*
* @dev The purpose of this contract is to make it easy for unrelated contracts
* @dev to talk to Vera the verifier about the work Reggie is doing, to provide
* @dev simple access to a verifiable source of randomness. It ensures 2 things:
* @dev 1. The fulfillment came from the VRFCoordinator
* @dev 2. The consumer contract implements fulfillRandomWords.
* *****************************************************************************
* @dev USAGE
*
* @dev Calling contracts must inherit from VRFConsumerBase, and can
* @dev initialize VRFConsumerBase's attributes in their constructor as
* @dev shown:
*
* @dev contract VRFConsumer {
* @dev constructor(<other arguments>, address _vrfCoordinator, address _link)
* @dev VRFConsumerBase(_vrfCoordinator) public {
* @dev <initialization with other arguments goes here>
* @dev }
* @dev }
*
* @dev The oracle will have given you an ID for the VRF keypair they have
* @dev committed to (let's call it keyHash). Create subscription, fund it
* @dev and your consumer contract as a consumer of it (see VRFCoordinatorInterface
* @dev subscription management functions).
* @dev Call requestRandomWords(keyHash, subId, minimumRequestConfirmations,
* @dev callbackGasLimit, numWords),
* @dev see (VRFCoordinatorInterface for a description of the arguments).
*
* @dev Once the VRFCoordinator has received and validated the oracle's response
* @dev to your request, it will call your contract's fulfillRandomWords method.
*
* @dev The randomness argument to fulfillRandomWords is a set of random words
* @dev generated from your requestId and the blockHash of the request.
*
* @dev If your contract could have concurrent requests open, you can use the
* @dev requestId returned from requestRandomWords to track which response is associated
* @dev with which randomness request.
* @dev See "SECURITY CONSIDERATIONS" for principles to keep in mind,
* @dev if your contract could have multiple requests in flight simultaneously.
*
* @dev Colliding `requestId`s are cryptographically impossible as long as seeds
* @dev differ.
*
* *****************************************************************************
* @dev SECURITY CONSIDERATIONS
*
* @dev A method with the ability to call your fulfillRandomness method directly
* @dev could spoof a VRF response with any random value, so it's critical that
* @dev it cannot be directly called by anything other than this base contract
* @dev (specifically, by the VRFConsumerBase.rawFulfillRandomness method).
*
* @dev For your users to trust that your contract's random behavior is free
* @dev from malicious interference, it's best if you can write it so that all
* @dev behaviors implied by a VRF response are executed *during* your
* @dev fulfillRandomness method. If your contract must store the response (or
* @dev anything derived from it) and use it later, you must ensure that any
* @dev user-significant behavior which depends on that stored value cannot be
* @dev manipulated by a subsequent VRF request.
*
* @dev Similarly, both miners and the VRF oracle itself have some influence
* @dev over the order in which VRF responses appear on the blockchain, so if
* @dev your contract could have multiple VRF requests in flight simultaneously,
* @dev you must ensure that the order in which the VRF responses arrive cannot
* @dev be used to manipulate your contract's user-significant behavior.
*
* @dev Since the block hash of the block which contains the requestRandomness
* @dev call is mixed into the input to the VRF *last*, a sufficiently powerful
* @dev miner could, in principle, fork the blockchain to evict the block
* @dev containing the request, forcing the request to be included in a
* @dev different block with a different hash, and therefore a different input
* @dev to the VRF. However, such an attack would incur a substantial economic
* @dev cost. This cost scales with the number of blocks the VRF oracle waits
* @dev until it calls responds to a request. It is for this reason that
* @dev that you can signal to an oracle you'd like them to wait longer before
* @dev responding to the request (however this is not enforced in the contract
* @dev and so remains effective only in the case of unmodified oracle software).
*/
abstract contract VRFConsumerBaseV2 {
error OnlyCoordinatorCanFulfill(address have, address want);
address private immutable vrfCoordinator;
/**
* @param _vrfCoordinator address of VRFCoordinator contract
*/
constructor(address _vrfCoordinator) {
vrfCoordinator = _vrfCoordinator;
}
/**
* @notice fulfillRandomness handles the VRF response. Your contract must
* @notice implement it. See "SECURITY CONSIDERATIONS" above for important
* @notice principles to keep in mind when implementing your fulfillRandomness
* @notice method.
*
* @dev VRFConsumerBaseV2 expects its subcontracts to have a method with this
* @dev signature, and will call it once it has verified the proof
* @dev associated with the randomness. (It is triggered via a call to
* @dev rawFulfillRandomness, below.)
*
* @param requestId The Id initially returned by requestRandomness
* @param randomWords the VRF output expanded to the requested number of words
*/
function fulfillRandomWords(uint256 requestId, uint256[] memory randomWords) internal virtual;
// rawFulfillRandomness is called by VRFCoordinator when it receives a valid VRF
// proof. rawFulfillRandomness then calls fulfillRandomness, after validating
// the origin of the call
function rawFulfillRandomWords(uint256 requestId, uint256[] memory randomWords) external {
if (msg.sender != vrfCoordinator) {
revert OnlyCoordinatorCanFulfill(msg.sender, vrfCoordinator);
}
fulfillRandomWords(requestId, randomWords);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface VRFCoordinatorV2Interface {
/**
* @notice Get configuration relevant for making requests
* @return minimumRequestConfirmations global min for request confirmations
* @return maxGasLimit global max for request gas limit
* @return s_provingKeyHashes list of registered key hashes
*/
function getRequestConfig()
external
view
returns (
uint16,
uint32,
bytes32[] memory
);
/**
* @notice Request a set of random words.
* @param keyHash - Corresponds to a particular oracle job which uses
* that key for generating the VRF proof. Different keyHash's have different gas price
* ceilings, so you can select a specific one to bound your maximum per request cost.
* @param subId - The ID of the VRF subscription. Must be funded
* with the minimum subscription balance required for the selected keyHash.
* @param minimumRequestConfirmations - How many blocks you'd like the
* oracle to wait before responding to the request. See SECURITY CONSIDERATIONS
* for why you may want to request more. The acceptable range is
* [minimumRequestBlockConfirmations, 200].
* @param callbackGasLimit - How much gas you'd like to receive in your
* fulfillRandomWords callback. Note that gasleft() inside fulfillRandomWords
* may be slightly less than this amount because of gas used calling the function
* (argument decoding etc.), so you may need to request slightly more than you expect
* to have inside fulfillRandomWords. The acceptable range is
* [0, maxGasLimit]
* @param numWords - The number of uint256 random values you'd like to receive
* in your fulfillRandomWords callback. Note these numbers are expanded in a
* secure way by the VRFCoordinator from a single random value supplied by the oracle.
* @return requestId - A unique identifier of the request. Can be used to match
* a request to a response in fulfillRandomWords.
*/
function requestRandomWords(
bytes32 keyHash,
uint64 subId,
uint16 minimumRequestConfirmations,
uint32 callbackGasLimit,
uint32 numWords
) external returns (uint256 requestId);
/**
* @notice Create a VRF subscription.
* @return subId - A unique subscription id.
* @dev You can manage the consumer set dynamically with addConsumer/removeConsumer.
* @dev Note to fund the subscription, use transferAndCall. For example
* @dev LINKTOKEN.transferAndCall(
* @dev address(COORDINATOR),
* @dev amount,
* @dev abi.encode(subId));
*/
function createSubscription() external returns (uint64 subId);
/**
* @notice Get a VRF subscription.
* @param subId - ID of the subscription
* @return balance - LINK balance of the subscription in juels.
* @return reqCount - number of requests for this subscription, determines fee tier.
* @return owner - owner of the subscription.
* @return consumers - list of consumer address which are able to use this subscription.
*/
function getSubscription(uint64 subId)
external
view
returns (
uint96 balance,
uint64 reqCount,
address owner,
address[] memory consumers
);
/**
* @notice Request subscription owner transfer.
* @param subId - ID of the subscription
* @param newOwner - proposed new owner of the subscription
*/
function requestSubscriptionOwnerTransfer(uint64 subId, address newOwner) external;
/**
* @notice Request subscription owner transfer.
* @param subId - ID of the subscription
* @dev will revert if original owner of subId has
* not requested that msg.sender become the new owner.
*/
function acceptSubscriptionOwnerTransfer(uint64 subId) external;
/**
* @notice Add a consumer to a VRF subscription.
* @param subId - ID of the subscription
* @param consumer - New consumer which can use the subscription
*/
function addConsumer(uint64 subId, address consumer) external;
/**
* @notice Remove a consumer from a VRF subscription.
* @param subId - ID of the subscription
* @param consumer - Consumer to remove from the subscription
*/
function removeConsumer(uint64 subId, address consumer) external;
/**
* @notice Cancel a subscription
* @param subId - ID of the subscription
* @param to - Where to send the remaining LINK to
*/
function cancelSubscription(uint64 subId, address to) external;
/*
* @notice Check to see if there exists a request commitment consumers
* for all consumers and keyhashes for a given sub.
* @param subId - ID of the subscription
* @return true if there exists at least one unfulfilled request for the subscription, false
* otherwise.
*/
function pendingRequestExists(uint64 subId) external view returns (bool);
}
{
"compilationTarget": {
"contracts/Infiltration.sol": "Infiltration"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 888888
},
"remappings": [
":@chainlink/=node_modules/@chainlink/",
":@ensdomains/=node_modules/@ensdomains/",
":@eth-optimism/=node_modules/@eth-optimism/",
":@looksrare/=node_modules/@looksrare/",
":@openzeppelin/=node_modules/@openzeppelin/",
":ds-test/=lib/forge-std/lib/ds-test/src/",
":erc721a/=node_modules/erc721a/",
":eth-gas-reporter/=node_modules/eth-gas-reporter/",
":forge-std/=lib/forge-std/src/",
":hardhat/=node_modules/hardhat/"
],
"viaIR": true
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