彩票

v2

Contract info

Contract name: PancakeSwapLottery Contract address: 0x5aF6D33DE2ccEC94efb1bDF8f92Bd58085432d2c Random number generator address: 0x8c6375Aab6e5B26a30bF241EBBf29AD6e6c503c2 (Random number generator contract must be deployed first)

View PancakeSwapLottery.sol on BscScan.

View the PancakeSwap: Lottery contract on BscScan.

Audits

The PancakeSwap Lottery V2 has been audited twice so far. View the results below:

Peckshield's Lottery V2 Audit

Slowmist's Lottery V2 Audit

Lottery Status states

The lottery has four Status states, Pending, Open, Close, and Claimable, that determine which actions can and cannot be taken at a given time.

Read/View functions

viewCurrentLotteryId

function viewCurrentLotteryId() external view override returns (uint256);

Returns the Id# of the current Lottery round as an integer. Round Id#s correlate to round number, and are incremental, e.g. the ninth round of Lottery will be 9.

viewLottery

function viewLottery(uint256 _lotteryId) external view returns (Lottery memory);

Returns information on specified Lottery round as tuple (see Lottery structure below).

        uint256 startTime;
        uint256 endTime;
        uint256 priceTicketInCake;
        uint256 discountDivisor;
        uint256[6] rewardsBreakdown; // 0: 1 matching number // 5: 6 matching numbers
        uint256 treasuryFee; // 500: 5% // 200: 2% // 50: 0.5%
        uint256[6] cakePerBracket;
        uint256[6] countWinnersPerBracket;
        uint256 firstTicketId;
        uint256 firstTicketIdNextLottery;
        uint256 amountCollectedInCake;
        uint32 finalNumber;

Name	Type	Description
startTime	uint256	Starting block for Lottery round.
endTime	uint256	Ending block for Lottery round (approximately 12 hours after a round begins).
priceTicketInCake	uint256	The price of a ticket in CAKE (approximately $5 USD).
discountDivisor	uint256	The divisor used to calculate bulk ticket discount.
rewardsBreakdown	uint256[6]	The division of rewards across brackets (total must add up to 10,000).
treasuryFee	uint256	Amount taken from funds raised per round that's moved to treasury address (maximum 3000).
cakePerBracket	uint256[6]	The amount of CAKE to distribute to winners of each bracket.
countWinnersPerBracket	uint256[6]	Moves through brackets, starting from the highest, accounting for winners when value > 0.
firstTicketId	uint256	Id of the first ticket, set with the opening of the Lottery round, that determines the range of eligible tickets for the current round.
firstTicketIdNextLottery	uint256	Id of the first ticket, set at the closing of current round, that determines the range of eligible tickets for the current round.
amountCollectedInCake	uint256	The amount of CAKE collected through ticket sales for the Lottery round.
finalNumber	uint32	The final number determined by randomResult obtained from the number generator contract (RandomNumberGenerator.sol) using Chainlink VRF.

viewNumbersAndStatusesForTicketIds

function viewNumbersAndStatusesForTicketIds(uint256[] calldata _ticketIds)
    external
    view
    returns (uint32[] memory, bool[] memory);

Returns the corresponding numbers and the statuses of ticketIds array of tickets defined by their ticketId.

viewRewardsForTicketId

function viewRewardsForTicketId(
    uint256 _lotteryId,
    uint256 _ticketId,
    uint32 _bracket;

Calculates rewards for a ticket after draw given the lotteryId, ticketId, and bracket. Filling and querying will provide a link to detailed price information on BscScan.

Name	Type	Description
lotteryId	uint256	The id of the Lottery.
ticketId	uint256	The id of the ticket.
bracket	uint32	Bracket for the ticketId to verify the claim and calculate rewards.

viewUserInfoForLotteryId

    function viewUserInfoForLottery(
        address _user,
        uint256 _lotteryId,
        uint256 _cursor,
        uint256 _size
    )
        external
        view
        returns (
            uint256[] memory,
            uint32[] memory,
            bool[] memory,
            uint256
        )

Returns user lotteryTicketIds, ticketNumbers, and ticketStatuses of a user for a given Lottery (defined by lotteryID).

Name	Type	Description
user	address	The address of the user.
lotteryId	uint256	The id of the Lottery.
cursor	uint256	Cursor to start where to retrieve the tickets.
size	uint256	The number of tickets to retrieve.

calculateRewardsForTicketId

    function _calculateRewardsForTicketId(
        uint256 _lotteryId,
        uint256 _ticketId,
        uint32 _bracket
    ) internal view returns (uint256);

Calculates rewards for a ticket after draw given the lotteryId, ticketId, and bracket.

Name	Type	Description
lotteryId	uint256	The id of the Lottery.
ticketId	uint256	The id of the ticket.
bracket	uint32	Bracket for the ticketId to verify the claim and calculate rewards.