import "@thirdweb-dev/contracts/extension/Drop1155.sol";

The Drop1155 smart contract is an extension meant for distributing ERC1155 tokens. It allows setting up multiple claim phases unlike ERC1155DropSinglePhase. This series of claim phases is ordered by their respective startTimestamp.

This extension implements the 'Drop' distribution mechanism: set multiple claim phases with restrictions such as a price to charge, an allowlist etc. for the public / allowlisted mint of your tokens.

It is recommended to use this extension alongside the LazyMint extension.

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The Drop1155 extension is an abstract contract, and expects you to implement the following functions by yourself:

This is an example smart contract demonstrating how to inherit from this extension and override the functions to add (optional) custom functionality.

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;

import "@thirdweb-dev/contracts/extension/Drop1155.sol";
import "@thirdweb-dev/contracts/base/ERC1155Base.sol";
import "@thirdweb-dev/contracts/lib/CurrencyTransferLib.sol";

/// This is an EXAMPLE of usage of `Drop1155` for distributing ERC1155 tokens.

contract MyContract is ERC1155Base, Drop1155 {
    /*//////////////////////////////////////////////////////////////
                            Constructor
    //////////////////////////////////////////////////////////////*/

    constructor(
        string memory _name,
        string memory _symbol,
        address _royaltyRecipient,
        uint128 _royaltyBps
    ) ERC1155Base(_name, _symbol, _royaltyRecipient, _royaltyBps) {}

    /*//////////////////////////////////////////////////////////////
                        Internal (overrideable) functions
    //////////////////////////////////////////////////////////////*/

    /// @dev Collects and distributes the primary sale value of NFTs being claimed.
    function _collectPriceOnClaim(
        uint256 _tokenId,
        address _primarySaleRecipient,
        uint256 _quantityToClaim,
        address _currency,
        uint256 _pricePerToken
    ) internal virtual override {
        if (_pricePerToken == 0) {
            return;
        }

        uint256 totalPrice = _quantityToClaim * _pricePerToken;

        if (_currency == CurrencyTransferLib.NATIVE_TOKEN) {
            if (msg.value != totalPrice) {
                revert("Must send total price.");
            }
        }

        address saleRecipient = _primarySaleRecipient;
        CurrencyTransferLib.transferCurrency(_currency, msg.sender, saleRecipient, totalPrice);
    }

    /// @dev Transfers the tokens being claimed.
    function _transferTokensOnClaim(address _to, uint256 _tokenId, uint256 _quantityBeingClaimed)
        internal
        virtual
        override
    {
        _mint(_to, _tokenId, _quantityBeingClaimed, "");
    }

    /// @dev Checks whether platform fee info can be set in the given execution context.
    function _canSetClaimConditions()
        internal
        view
        virtual
        override
        returns (bool)
    {
        return msg.sender == owner();
    }

    /// @dev Runs before every `claim` function call.
    function _beforeClaim(
        uint256 _tokenId,
        address _receiver,
        uint256 _quantity,
        address _currency,
        uint256 _pricePerToken,
        AllowlistProof calldata _allowlistProof,
        bytes memory _data
    ) internal virtual {}

    /// @dev Runs after every `claim` function call.
    function _afterClaim(
        uint256 _tokenId,
        address _receiver,
        uint256 _quantity,
        address _currency,
        uint256 _pricePerToken,
        AllowlistProof calldata _allowlistProof,
        bytes memory _data
    ) internal virtual {}
}

None of the base contracts implement this extension.