币安BSC智能链发币教程——fistswap添加流动性后LP加池分红FIST到添加流动性的钱包地址的代码实现【pdf+视频BSC发币教程下载】

一、准备

LP加池分红，即添加流动性后，合约交易的手续费其中扣除一部分作为LP加池奖励，分发给添加流动性的用户。可以把本币转换成任何类型的ERC20标准的代币，分发到添加LP的用户钱包地址。本案例是以fistswap上添加流动性获得LP加池分红FIST为例，通过代码实现上述功能。

1、合约交易时扣除部分手续费暂存到中转地址

2、当中转地址代币数量总额达到一定值触发swapandLiquidtiy后，执行LP分红奖励Fist操作

3、也可以通过每笔交易实时的触发lP加池分红fist

4、通过合约自动创建fist交易对作为LP的合约地址，同时为了支持多个交易对全部满足合约模式，又单独指定了mainpair

二、操作流程

1、实时奖励LP加池分红firs合约代码如下

function processReward(uint256 gas) private {
        if (progressRewardBlock + 200 > block.number) {
            return;
        }

        IERC20 FIST = IERC20(_fist);

        uint256 balance = FIST.balanceOf(address(this));
        if (balance < holderRewardCondition) {
            return;
        }
        address shareHolder;
        uint256 tokenBalance;
        uint256 amount;
        uint256 gasUsed = 0;
        uint256 iterations = 0;
        uint256 gasLeft = gasleft();

        while (gasUsed < gas && iterations < shareholderCount) {
            if (currentIndex >= shareholderCount) {
                currentIndex = 0;
            }
            if (tokenBalance > 0 && !excludeHolder[shareHolder]) {
                amount = balance / holdTokenTotal;
                if (amount > 0) {
                    FIST.transfer(shareHolder, amount);
                }
            }

            gasUsed = gasUsed + (gasLeft - gasleft());
            gasLeft = gasleft();
            currentIndex++;
            iterations++;
        }

        progressRewardBlock = block.number;
    }

2、实时记录LP持币地址函数功能代码如下：

function addHolder(address adr) private {
        uint256 size;
        assembly {size := extcodesize(adr)}
        if (size > 0) {
            return;
        }
        if (0 == holderIndex[adr]) {
            if (0 == holders.length || holders[0] != adr) {
                holderIndex[adr] = holders.length;
                holders.push(adr);
            }
        }
    }

3、合约交易时暂存指定比例的代币到中转地址功能代码如下：

function _tokenTransfer(
        address sender,
        address recipient,
        uint256 tAmount,
        bool takeFee,
        bool isSell
    ) private {
        _balances[sender] = _balances[sender] - tAmount;
        uint256 feeAmount;

        if (takeFee) {
            uint256 swapFee;
            if (isSell) {
                swapFee = _sellFundFee + _sellLPDividendFee + _sellLPFee;
            } else {
                swapFee = _buyFundFee + _buyLPDividendFee;
            }
            uint256 swapAmount = tAmount * swapFee / 10000;
            if (swapAmount > 0) {
                feeAmount += swapAmount;
                _takeTransfer(
                    sender,
                    tempTranAddress,
                    swapAmount
                );
            }
        }
        _takeTransfer(sender, recipient, otherAmount);
    }

4、LP加池分红派发器代码如下：

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.14;

import "./IERC20.sol";

contract TokenDistributor {
    constructor (address token) {
        IERC20(token).approve(msg.sender, uint(~uint256(0)));
    }
}

至此，完成fistswap添加流动性后LP加池分红FIST到添加流动性的钱包地址的代码实现。