Allocate percentage of tokens to the wallet who deployed the liquidity and DEX

Question

I'm new to solidity and I have to developed a ERC-20 Token. The functionality of token is almost done but in the mint function I want to cut 2% of the tokens user buy and send 1 % to liquidity pool and 1% to the owner who deployed the liquidity pool. How can I achieve this functionality ?

     function mintToken(address target, uint256 mintedAmount) public onlyOwner {
     balanceOf[target] += mintedAmount;
     totalSupply += mintedAmount;
    payable(msg.sender).transfer(mintedAmount);
    emit Transfer(owner, target, mintedAmount);                                               
}

Answer 1

I would advise inheriting Open Zeppelin's ERC20 contract when implementing your own token. See https://docs.openzeppelin.com/contracts/2.x/erc20 and https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol

For minting new tokens you want to use the internal_mint(target, amount), which mints an amount of tokens that are owned by target.

To do what you want, you would need to calculate the amount of tokens that should be minted to each account and then mint them to each account.

function buyTokens(uint256 amount) external {
  _mint(msg.sender, (98 * amount)/100);
  _mint(liquidityPoolOwnerAddress, amount/100);
  _mint(liquidityPoolAddress, amount/100);
}