how to avoid intermediate conversion while bep20 token swap between busd -> my own token

Question

We deployed our own BEP20 token and added liquidity in pair of BNB - myOwnToken first and after that we added another liquidity pair BUSD - myOwnToken.

When we swap token in pancakeSwap its allowing Buying MyOwnToken using BNB its directly swapped and there is not intermediate conversion which is good.

But when we try to buy token using BUSD to myOwnToken , first its getting converted BUSD to WBNB after that swapping wbnb - myOwnToken the routing is created as BUSD -> WBNB -> MyOwnToken and this is which is we dont want that's this intermediate swap

So how can we directly swap token as BUSD -> myOwnToken without intermediate swap to bnb? other couple of question we have is do all contracts on bsc always swap into bnb before swapping into the pair? For example if I swap busd for myOwnToken will the busd be converted into bnb first and then the second currency? if any implementation required to direct without interim conversion swap BUSD -> myOwnToken please guide or suggest.

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.14;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

interface IBEP20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, 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 
    sender, address recipient, uint256 amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}


library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }
}

interface IPancakeFactory {

    function createPair(address tokenA, address tokenB) external returns (address pair);
    function getPair(address token0, address token1) external view returns (address);

}


interface IPancakeRouter01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

interface IPancakeRouter02 is IPancakeRouter01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

contract Ownable is Context {
    address private _owner;
    address private _previousOwner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public onlyOwner {
        require(newOwner != address(0));
        emit OwnershipTransferred(_owner, newOwner);
        _previousOwner = _owner ;
        _owner = newOwner;
    }

    function previousOwner() public view returns (address) {
        return _previousOwner;
    }
}


contract Test is Context, IBEP20, Ownable {
    
    struct FeeExcluded { 
            bool bothFee;
            bool buyFeeOnly;
            bool sellFeeOnly;
    }

    using SafeMath for uint256;

    IPancakeRouter02 private pancakeV2Router;
    address public pancakeswapPair;


    address public routerAddress = 0x10ED43C718714eb63d5aA57B78B54704E256024E;
    address public previousRouterAddress;


    string private constant _name = "Test Token";
    string private constant _symbol = "Test";
    uint8 private constant _decimals = 9;
    uint256 private constant MAX = ~uint256(0);
    uint256 private _tTotal = 10000000000 * 10**9;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));
    uint256 public _TestBurned;
    bool public tradeAllowed = false;
    bool private liquidityAdded = false;
    bool private inSwap = false;
    bool public swapEnabled = false;
    bool public feeEnabled = false;
    
    bool public buyFeeEnabled = false;
    bool public sellFeeEnabled = false;
    

    bool private limitTX = false;
    uint256 private _maxTxAmount = _tTotal;

    uint256 private _contractFee ;
    uint256 private _tempContractFee ;
    
    uint256 private _burn ;
    uint256 private _boostFee ;
    uint256 private _futureFee ;
    uint256 private _conduitFee; 


    uint256 private _buyContractFee;
    uint256 private _buyBurn;
    uint256 private _buyBoostFee ;
    uint256 private _buyFutureFee ;
    uint256 private _buyConduitFee ;


    uint256 private _sellContractFee;
    uint256 private _sellBurn;
    uint256 private _sellBoostFee ;
    uint256 private _sellFutureFee ;
    uint256 private _sellConduitFee ;
    

    uint public currentBuyFee ;
    uint public currentSellFee ;


    uint256 private _maxBuyAmount;
    address payable private _development;
    address payable private _boost;
    address payable private _conduitAddress;


    
    address public targetToken = 0x1AF3F329e8BE154074D8769D1FFa4eE058B1DBc3; 
    address public boostFund = 0xa638F4Bb8202049eb4A6782511c3b8A64A2F90a1;


    mapping(address => uint256) private _rOwned;
    mapping(address => uint256) private _tOwned;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => FeeExcluded) private _isExcludedFromFee;
    mapping(address => bool) private _isBlacklisted;

    struct User {
        uint256 buy;
        uint256 sell;
        bool exists;
    }

    event MaxBuyAmountUpdated(uint _maxBuyAmount);
    event MaxTxAmountUpdated(uint256 _maxTxAmount);
    

    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;

    }

    constructor(address payable addr1, address payable addr2,address payable addr3 ,address addr4) {
        _development = addr1;
        _boost = addr2;
        _conduitAddress = addr3;
        _rOwned[_msgSender()] = _rTotal;

        _isExcludedFromFee[owner()] = FeeExcluded(true,true,true);
        _isExcludedFromFee[address(this)] = FeeExcluded(true,true,true);
        _isExcludedFromFee[_development] = FeeExcluded(true,true,true);
        _isExcludedFromFee[_boost] = FeeExcluded(true,true,true);
        _isExcludedFromFee[addr4] = FeeExcluded(true,true,true);
        _isExcludedFromFee[_conduitAddress] = FeeExcluded(true,true,true);


        IPancakeRouter02 _pancakeV2Router = IPancakeRouter02(routerAddress);
        pancakeV2Router = _pancakeV2Router;
        pancakeswapPair = IPancakeFactory(pancakeV2Router.factory()).createPair(address(this), pancakeV2Router.WETH());
        _isExcludedFromFee[routerAddress] = FeeExcluded(true,true,true);
        emit Transfer(address(0), _msgSender(), _tTotal);


  


    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return tokenFromReflection(_rOwned[account]);
    }

    function setTargetAddress(address target_adr) external onlyOwner {
        targetToken = target_adr;
    }

    function changeDevelopmentAddress(address payable _addy) external onlyOwner {
        _development = _addy;
        _isExcludedFromFee[_development] = FeeExcluded(true,true,true);

    }

    function changeBoostAddress(address payable _addy) external onlyOwner {        
        _boost = _addy;
        _isExcludedFromFee[_boost] = FeeExcluded(true,true,true);
    }
    
    function changeConduitAddress(address payable _address) external onlyOwner {        
        _conduitAddress = _address;
        _isExcludedFromFee[_conduitAddress] = FeeExcluded(true,true,true);
    }

    function setExcludeFromBothFees(address _address) external  onlyOwner {
        _isExcludedFromFee[_address] = FeeExcluded(true,true,true);
    }
    
    function setExcludeFromBuyFeeOnlyFees(address _address) external  onlyOwner {
        _isExcludedFromFee[_address] = FeeExcluded(false,true,false);
    }

    function setExcludeFromSellFeeOnlyFees(address _address) external  onlyOwner {
        _isExcludedFromFee[_address] = FeeExcluded(false,false,true);
    }

    function setIncludeInFees(address _address) external  onlyOwner {
        _isExcludedFromFee[_address] = FeeExcluded(false,false,false);
    }

    function checkExcludedAddress(address _address) public view returns(bool bothFee,bool buyFeeOnly,bool sellFeeOnly){
       FeeExcluded memory feeObj = _isExcludedFromFee[_address];
       return (feeObj.bothFee,feeObj.buyFeeOnly,feeObj.sellFeeOnly);

    }



    function setAddressIsBlackListed(address _address, bool _bool) external onlyOwner {
        _isBlacklisted[_address] = _bool;
    }

    function viewIsBlackListed(address _address) public view returns(bool) {
        return _isBlacklisted[_address];
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,"ERC20: transfer amount exceeds allowance"));
        return true;
    }

    function setFeeEnabled(bool enable) external onlyOwner {
        feeEnabled = enable;
    }

    
    function enableBuyFee() external onlyOwner {
        buyFeeEnabled = true;
    }

    function disableBuyFee() external onlyOwner {
        buyFeeEnabled = false;
    }

    function enableSellFee() external onlyOwner {
        sellFeeEnabled = true;
    }

    function disableSellFee() external onlyOwner {
        sellFeeEnabled = false;
    }

    function setLimitTx(bool enable) external onlyOwner {
        limitTX = enable;
    }

    function enableTrading(bool enable) external onlyOwner {
        require(liquidityAdded);
        tradeAllowed = enable;
    }

    function changeRouterAddress(address _addr) external onlyOwner {
        previousRouterAddress = routerAddress;
        routerAddress = _addr;
        _isExcludedFromFee[previousRouterAddress] = FeeExcluded(false,false,false);


        IPancakeRouter02 _pancakeV2Router = IPancakeRouter02(routerAddress);
        pancakeV2Router = _pancakeV2Router;    
        _isExcludedFromFee[routerAddress] = FeeExcluded(true,true,true);
    }

    

    function addLiquidity() external onlyOwner() {
        
        _approve(address(this), address(pancakeV2Router), _tTotal);
        pancakeV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
        swapEnabled = true;
        liquidityAdded = true;
        feeEnabled = true;
        tradeAllowed  = true;
        limitTX = true;
        _maxTxAmount = 100000000 * 10**9; 
        _maxBuyAmount = 20000000 * 10**9; 
        IBEP20(pancakeswapPair).approve(address(pancakeV2Router),type(uint256).max);
    }


    function manualSwapTokensForEth() external onlyOwner() {
        uint256 contractBalance = balanceOf(address(this));
        swapTokensForEth(contractBalance);
    }

    function manualDistributeETH() external onlyOwner() {
        uint256 contractETHBalance = address(this).balance;
        _boost.transfer(contractETHBalance); 

    }

    function manualSwapEthForTargetToken(uint amount) external onlyOwner() {
        swapETHfortargetToken(amount);
    }

    function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
        require(maxTxPercent > 0, "Amount must be greater than 0");
        _maxTxAmount = _tTotal.mul(maxTxPercent).div(10**2);
        emit MaxTxAmountUpdated(_maxTxAmount);
    }


    function amountInPool() public view returns (uint) {
        return balanceOf(pancakeswapPair);
    }

    function tokenFromReflection(uint256 rAmount) private view returns (uint256) {
        require(rAmount <= _rTotal,"Amount must be less than total reflections");
        uint256 currentRate = _getRate();
        return rAmount.div(currentRate);
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _transfer(address from, address to, uint256 amount) private {

        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");

        bool  chargeTax = true;
        bool _exludeFee = false;
    
        if (from != owner() && to != owner() && !_isExcludedFromFee[from].bothFee && !_isExcludedFromFee[to].bothFee) {
            require(tradeAllowed);
            require(!_isBlacklisted[from] && !_isBlacklisted[to]);

            if (from == pancakeswapPair && to != address(pancakeV2Router)) {
                if (limitTX) {
                    require(amount <= _maxTxAmount,"Amount is greater then maxTxAmount");
                }

                chargeTax = buyFeeEnabled;
                setBuyFeeOnTrancation();
                _exludeFee = _isExcludedFromFee[to].buyFeeOnly;
                

                uint contractETHBalance = address(this).balance;
                if (contractETHBalance > 0) {
                    swapETHfortargetToken(address(this).balance);
                }
            }

            if(to == address(pancakeswapPair) || to == address(pancakeV2Router) ) {
                
                chargeTax = sellFeeEnabled;
                setSellFeeOnTrancation();
                _exludeFee = _isExcludedFromFee[from].sellFeeOnly;


                uint contractTokenBalance = balanceOf(address(this)); 
                if (!inSwap && from != pancakeswapPair && swapEnabled) {
                    
                    if (limitTX) {
                    require(amount <= balanceOf(pancakeswapPair).mul(3).div(100) && amount <= _maxTxAmount,"Amount is greater then maxTxAmount and 3% of liquidity pool");
                    }

                    uint initialETHBalance = address(this).balance;

                    if (contractTokenBalance > 0){
                        
                        if(_conduitFee > 0){
                            uint conduitShare = contractTokenBalance.div(_conduitFee); 
                            contractTokenBalance = contractTokenBalance.sub(conduitShare);
                            _transfer(address(this), _conduitAddress, conduitShare); 
                        } 

                    swapTokensForEth(contractTokenBalance);
                    _boostFee = _sellBoostFee;
                    _futureFee =_sellFutureFee;
                    uint newETHBalance = address(this).balance; 
                    uint ethToDistribute = newETHBalance.sub(initialETHBalance);
                    if (ethToDistribute > 0) {
                        distributeETH(ethToDistribute);
                    }

                    }
                    
                }
                chargeTax = sellFeeEnabled;
                setSellFeeOnTrancation();
                _exludeFee = _isExcludedFromFee[from].sellFeeOnly;

            }
        }
    
        
        
        bool takeFee = true;

        if (_isExcludedFromFee[from].bothFee || _isExcludedFromFee[to].bothFee || !feeEnabled || !chargeTax || _exludeFee) {
            takeFee = false;
        }
        _tokenTransfer(from, to, amount, takeFee);
        removeAllFee;
    }


    function removeAllFee() private {
        if (_contractFee == 0 && _burn == 0) return;
        _contractFee = 0;
        _burn = 0;
        _boostFee = 0 ;
        _futureFee =0 ;
        _conduitFee = 0;
    }

    function setBuyFeeOnTrancation() private {
        _contractFee = _buyContractFee;
        _burn = _buyBurn;
        _boostFee = _buyBoostFee ;
        _futureFee =_buyFutureFee ;
        _conduitFee = _buyConduitFee;
    }

    function setSellFeeOnTrancation() private {
        _contractFee = _sellContractFee;
        _burn = _sellBurn;
        _boostFee = _sellBoostFee ;
        _futureFee =_sellFutureFee ;
        _conduitFee = _sellConduitFee;
    }


    function setBuyFee(uint256  _per ) external onlyOwner() {

       if (_per == 5){
        _buyContractFee = 4;
        _buyBurn = 1;
        _buyConduitFee = _buyContractFee.div(1);
        _tempContractFee = 3;
        _buyBoostFee = _tempContractFee.div(2); 
        _buyFutureFee = _tempContractFee.div(1);

        currentBuyFee = 5;
        buyFeeEnabled = true;
        }else if (_per == 10){
        _buyContractFee = 8;
        _buyBurn = 2;
         _buyConduitFee = _buyContractFee.div(2);
        _tempContractFee = 6;
        _buyBoostFee = _tempContractFee.div(2); 
        _buyFutureFee = _tempContractFee.div(2);
        
        currentBuyFee = 10;
        buyFeeEnabled = true;
        }else {
            revert(" Invalid input for buy tax. supported input are  5% and 10%");
        }
 
    }

    function setSellFee(uint256  _per ) external onlyOwner() {
        if (_per == 10){
        _sellContractFee = 8; 
        _sellBurn = 2;
        _sellConduitFee = _sellContractFee.div(2);
        _tempContractFee = 6;
        _sellBoostFee = _tempContractFee.div(2); 
        _sellFutureFee = _tempContractFee.div(2);

        currentSellFee = 10;
        sellFeeEnabled = true;
        }else if (_per == 15){
        _sellContractFee = 12;
        _sellBurn = 3; 
        _sellConduitFee =_sellContractFee.div(3);
        _tempContractFee = 9;
        _sellBoostFee = _tempContractFee.div(4); 
        _sellFutureFee = _tempContractFee.div(1);

        currentSellFee = 15;
        sellFeeEnabled = true;
        }
        else {
            revert(" Invalid input for sell tax. supported input are  10% and 15%");
        }
 
    }


    function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
        if (!takeFee) removeAllFee();
        _transferStandard(sender, recipient, amount);
        if (!takeFee) removeAllFee();
    }

    function _transferStandard(address sender, address recipient, uint256 amount) private {
        (uint256 tAmount, uint256 tBurn) = _TestEthBurn(amount); 
        (uint256 rAmount, uint256 rTransferAmount, uint256 tTransferAmount, uint256 tTeam) = _getValues(tAmount, tBurn); 
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); 
        _takeTeam(tTeam);
        emit Transfer(sender, recipient, tTransferAmount); 
    }

    function _takeTeam(uint256 tTeam) private {
        uint256 currentRate = _getRate(); 
        uint256 rTeam = tTeam.mul(currentRate); 
        _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); 
    }

    function _TestEthBurn(uint amount) private returns (uint, uint) {
        uint orgAmount = amount; 
        uint256 currentRate = _getRate(); 
        uint256 tBurn = amount.mul(_burn).div(100); 
        uint256 rBurn = tBurn.mul(currentRate); 
        _tTotal = _tTotal.sub(tBurn);  
        _rTotal = _rTotal.sub(rBurn);  
        _TestBurned = _TestBurned.add(tBurn); 
        return (orgAmount, tBurn);
    }


    function _getValues(uint256 tAmount, uint256 tBurn) private view returns (uint256, uint256, uint256, uint256) {
        (uint256 tTransferAmount, uint256 tTeam) = _getTValues(tAmount, _contractFee, tBurn);
        uint256 currentRate = _getRate(); 
        (uint256 rAmount, uint256 rTransferAmount) = _getRValues(tAmount, tTeam, tBurn, currentRate);
        return (rAmount, rTransferAmount, tTransferAmount, tTeam); 
    }

    function _getTValues(uint256 tAmount, uint256 teamFee, uint256 tBurn) private pure returns (uint256,  uint256) {
        uint256 tTeam = tAmount.mul(teamFee).div(100); 
        uint256 tTransferAmount = tAmount.sub(tTeam).sub(tBurn); 
        return (tTransferAmount, tTeam); 
    }

 
    function _getRValues(uint256 tAmount, uint256 tTeam,uint256 tBurn, uint256 currentRate) private pure returns (uint256, uint256) {
        uint256 rAmount = tAmount.mul(currentRate);
        uint256 rTeam = tTeam.mul(currentRate);
        uint256 rBurn =  tBurn.mul(currentRate); 
        uint256 rTransferAmount = rAmount.sub(rTeam).sub(rBurn); 
        return (rAmount, rTransferAmount); 
    }


    function _getRate() private view returns (uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply.div(tSupply);
    }

    function _getCurrentSupply() private view returns (uint256, uint256) {
        uint256 rSupply = _rTotal; 
        uint256 tSupply = _tTotal;
        if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = pancakeV2Router.WETH();
        _approve(address(this), address(pancakeV2Router), tokenAmount);
        pancakeV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0, path, address(this), block.timestamp);
    }

     function swapETHfortargetToken(uint ethAmount) private {
        address[] memory path = new address[](2);
        path[0] = pancakeV2Router.WETH();
        path[1] = address(targetToken);

        _approve(address(this), address(pancakeV2Router), ethAmount);
        pancakeV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: ethAmount}(ethAmount,path,address(boostFund),block.timestamp);
    }

    function distributeETH(uint256 amount) private {
        if(_futureFee > 0 && _boostFee > 0){
            _development.transfer(amount.div(_futureFee));  
            _boost.transfer(amount.div(_boostFee)); 
            }
        }
    

    receive() external payable {}
}

Answer 1

You cannot prevent intermediate trades.

If you create a liquidity pair of BNB/YourToken then you can directly convert between those two pairs.

But I might have XYZ token which has a liquidity pair against BUSD.

DEX's like pancakeswap will automatically swap things for me.

XYZ -> BUSD
BUSD -> BNB
BNB -> Your Token

This is one of the advantages of DEX's, it doesnt require you to have the token in the liquidity pair.

To improve the changes of a direct swap then you would need to create a liquidity pair for BUSD/Your token, however there is no guarantee that it will be a direct swap.

If another trade gets the user better value then it may take intermediate hops.

Why do you want to prevent this anyway?