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// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023. |
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// SPDX-License-Identifier: Unlicensed
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pragma solidity ^0.8.9;
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abstract contract Context {
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function _msgSender() internal view virtual returns (address) {
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return msg.sender;
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}
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}
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interface IERC20 {
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function totalSupply() external view returns (uint256);
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function balanceOf(address account) external view returns (uint256);
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function transfer(address recipient, uint256 amount) external returns (bool);
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function allowance(address owner, address spender) external view returns (uint256);
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function approve(address spender, uint256 amount) external returns (bool);
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function transferFrom(
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address sender,
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address recipient,
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uint256 amount
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) external returns (bool);
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(
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address indexed owner,
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address indexed spender,
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uint256 value
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);
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}
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contract Ownable is Context {
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address private _owner;
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address private _previousOwner;
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event OwnershipTransferred(
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address indexed previousOwner,
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address indexed newOwner
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);
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constructor() {
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address msgSender = _msgSender();
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_owner = msgSender;
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emit OwnershipTransferred(address(0), msgSender);
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}
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function owner() public view returns (address) {
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return _owner;
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}
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modifier onlyOwner() {
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require(_owner == _msgSender(), "Ownable: caller is not the owner");
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_;
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}
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function renounceOwnership() public virtual onlyOwner {
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emit OwnershipTransferred(_owner, address(0));
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_owner = address(0);
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}
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function transferOwnership(address newOwner) public virtual onlyOwner {
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require(newOwner != address(0), "Ownable: new owner is the zero address");
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emit OwnershipTransferred(_owner, newOwner);
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_owner = newOwner;
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}
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}
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library SafeMath {
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function add(uint256 a, uint256 b) internal pure returns (uint256) {
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uint256 c = a + b;
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require(c >= a, "SafeMath: addition overflow");
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return c;
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}
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function sub(uint256 a, uint256 b) internal pure returns (uint256) {
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return sub(a, b, "SafeMath: subtraction overflow");
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}
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function sub(
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uint256 a,
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uint256 b,
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string memory errorMessage
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) internal pure returns (uint256) {
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require(b <= a, errorMessage);
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uint256 c = a - b;
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return c;
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}
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function mul(uint256 a, uint256 b) internal pure returns (uint256) {
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if (a == 0) {
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return 0;
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}
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uint256 c = a * b;
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require(c / a == b, "SafeMath: multiplication overflow");
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return c;
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}
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function div(uint256 a, uint256 b) internal pure returns (uint256) {
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return div(a, b, "SafeMath: division by zero");
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}
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function div(
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uint256 a,
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uint256 b,
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string memory errorMessage
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) internal pure returns (uint256) {
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require(b > 0, errorMessage);
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uint256 c = a / b;
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return c;
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}
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}
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interface IUniswapV2Factory {
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function createPair(address tokenA, address tokenB)
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external
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returns (address pair);
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}
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interface IUniswapV2Router02 {
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function swapExactTokensForETHSupportingFeeOnTransferTokens(
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uint256 amountIn,
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uint256 amountOutMin,
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address[] calldata path,
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address to,
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uint256 deadline
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) external;
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function factory() external pure returns (address);
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function WETH() external pure returns (address);
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function addLiquidityETH(
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address token,
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uint256 amountTokenDesired,
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uint256 amountTokenMin,
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uint256 amountETHMin,
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address to,
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uint256 deadline
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)
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external
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payable
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returns (
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uint256 amountToken,
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uint256 amountETH,
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uint256 liquidity
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);
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}
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contract ROFL is Context, IERC20, Ownable {
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using SafeMath for uint256;
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string private constant _name = "ROFLCOPTER";
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string private constant _symbol = "ROFL";
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uint8 private constant _decimals = 9;
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mapping(address => uint256) private _rOwned;
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mapping(address => uint256) private _tOwned;
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mapping(address => mapping(address => uint256)) private _allowances;
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mapping(address => bool) private _isExcludedFromFee;
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uint256 private constant MAX = ~uint256(0);
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uint256 private constant _tTotal = 100000000 * 10**9;
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uint256 private _rTotal = (MAX - (MAX % _tTotal));
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uint256 private _tFeeTotal;
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uint256 private _redisFeeOnBuy = 0;
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uint256 private _taxFeeOnBuy = 15;
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uint256 private _redisFeeOnSell = 0;
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uint256 private _taxFeeOnSell = 40;
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//Original Fee
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uint256 private _redisFee = _redisFeeOnSell;
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uint256 private _taxFee = _taxFeeOnSell;
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uint256 private _previousredisFee = _redisFee;
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uint256 private _previoustaxFee = _taxFee;
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address payable private _developmentAddress = payable(msg.sender);
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address payable private _marketingAddress = payable(msg.sender);
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address private uniswapRouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
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IUniswapV2Router02 public uniswapV2Router;
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address public uniswapV2Pair;
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bool private tradingOpen = true;
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bool private inSwap = false;
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bool private swapEnabled = true;
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uint256 public _maxTxAmount = _tTotal*3/100;
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uint256 public _maxWalletSize = _tTotal*18/1000;
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uint256 public _swapTokensAtAmount = _tTotal*4/1000;
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event MaxTxAmountUpdated(uint256 _maxTxAmount);
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modifier lockTheSwap {
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inSwap = true;
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_;
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inSwap = false;
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}
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constructor() {
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_rOwned[_msgSender()] = _rTotal;
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IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);//
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uniswapV2Router = _uniswapV2Router;
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uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
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.createPair(address(this), _uniswapV2Router.WETH());
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_isExcludedFromFee[owner()] = true;
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_isExcludedFromFee[address(this)] = true;
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_isExcludedFromFee[_marketingAddress] = true;
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_isExcludedFromFee[_developmentAddress] = true;
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emit Transfer(address(0), _msgSender(), _tTotal);
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}
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function name() public pure returns (string memory) {
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return _name;
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}
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function symbol() public pure returns (string memory) {
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return _symbol;
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}
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function decimals() public pure returns (uint8) {
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return _decimals;
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}
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function totalSupply() public pure override returns (uint256) {
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return _tTotal;
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}
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function balanceOf(address account) public view override returns (uint256) {
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return tokenFromReflection(_rOwned[account]);
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}
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function transfer(address recipient, uint256 amount)
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public
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override
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returns (bool)
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{
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_transfer(_msgSender(), recipient, amount);
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return true;
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}
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function allowance(address owner, address spender)
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public
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view
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override
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returns (uint256)
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{
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return _allowances[owner][spender];
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}
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function approve(address spender, uint256 amount)
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public
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override
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returns (bool)
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{
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_approve(_msgSender(), spender, amount);
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return true;
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}
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function transferFrom(
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address sender,
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address recipient,
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uint256 amount
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) public override returns (bool) {
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_transfer(sender, recipient, amount);
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_approve(
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sender,
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_msgSender(),
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_allowances[sender][_msgSender()].sub(
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amount,
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"ERC20: transfer amount exceeds allowance"
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)
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);
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return true;
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}
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function tokenFromReflection(uint256 rAmount)
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private
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view
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returns (uint256)
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{
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require(
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rAmount <= _rTotal,
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"Amount must be less than total reflections"
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);
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uint256 currentRate = _getRate();
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return rAmount.div(currentRate);
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}
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function removeAllFee() private {
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if (_redisFee == 0 && _taxFee == 0) return;
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_previousredisFee = _redisFee;
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_previoustaxFee = _taxFee;
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_redisFee = 0;
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_taxFee = 0;
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}
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function restoreAllFee() private {
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_redisFee = _previousredisFee;
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_taxFee = _previoustaxFee;
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}
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function _approve(
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address owner,
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address spender,
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uint256 amount
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) private {
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require(owner != address(0), "ERC20: approve from the zero address");
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require(spender != address(0), "ERC20: approve to the zero address");
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_allowances[owner][spender] = amount;
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emit Approval(owner, spender, amount);
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}
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function _transfer(
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address from,
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address to,
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uint256 amount
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) private {
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require(from != address(0), "ERC20: transfer from the zero address");
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require(to != address(0), "ERC20: transfer to the zero address");
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require(amount > 0, "Transfer amount must be greater than zero");
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if (from != owner() && to != owner()) {
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//Trade start check
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if (!tradingOpen) {
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require(from == owner(), "TOKEN: This account cannot send tokens until trading is enabled");
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}
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if(to != uniswapV2Pair && to != uniswapRouter && to != _developmentAddress && to != address(this)) {
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require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
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if(to != uniswapV2Pair) {
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require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!");
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}
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}
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uint256 contractTokenBalance = balanceOf(address(this));
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bool canSwap = contractTokenBalance >= _swapTokensAtAmount;
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if(contractTokenBalance >= _swapTokensAtAmount*2)
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{
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contractTokenBalance = contractTokenBalance;
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}
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if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
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swapTokensForEth(contractTokenBalance);
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uint256 contractETHBalance = address(this).balance;
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if (contractETHBalance > 50000000000000000) {
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sendETHToFee(contractETHBalance);
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}
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}
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}
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bool takeFee = true;
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//Transfer Tokens
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if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
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takeFee = false;
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} else {
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//Set Fee for Buys
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if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
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_redisFee = _redisFeeOnBuy;
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_taxFee = _taxFeeOnBuy;
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}
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//Set Fee for Sells
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if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
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_redisFee = _redisFeeOnSell;
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_taxFee = _taxFeeOnSell;
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}
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}
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_tokenTransfer(from, to, amount, takeFee);
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}
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function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
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address[] memory path = new address[](2);
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path[0] = address(this);
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path[1] = uniswapV2Router.WETH();
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_approve(address(this), address(uniswapV2Router), tokenAmount);
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uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
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tokenAmount,
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0,
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path,
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address(this),
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block.timestamp
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);
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}
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function sendETHToFee(uint256 amount) private {
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_marketingAddress.transfer(amount);
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}
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function manualsend() external {
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sendETHToFee(address(this).balance);
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}
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function manualSwap(uint256 percent) external {
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uint256 contractTokenBalance = balanceOf(address(this));
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uint256 swapamount = contractTokenBalance*percent/100;
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swapTokensForEth(swapamount);
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}
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function toggleSwap (bool _swapEnabled) external {
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swapEnabled = _swapEnabled;
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}
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function _tokenTransfer(
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address sender,
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address recipient,
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uint256 amount,
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bool takeFee
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) private {
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if (!takeFee) removeAllFee();
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_transferStandard(sender, recipient, amount);
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if (!takeFee) restoreAllFee();
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}
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function _transferStandard(
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address sender,
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address recipient,
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uint256 tAmount
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) private {
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(
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uint256 rAmount,
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uint256 rTransferAmount,
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uint256 rFee,
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uint256 tTransferAmount,
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uint256 tFee,
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uint256 tTeam
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) = _getValues(tAmount);
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_rOwned[sender] = _rOwned[sender].sub(rAmount);
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_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
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_takeTeam(tTeam);
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_reflectFee(rFee, tFee);
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emit Transfer(sender, recipient, tTransferAmount);
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}
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function _takeTeam(uint256 tTeam) private {
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uint256 currentRate = _getRate();
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uint256 rTeam = tTeam.mul(currentRate);
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_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
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}
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function _reflectFee(uint256 rFee, uint256 tFee) private {
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_rTotal = _rTotal.sub(rFee);
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_tFeeTotal = _tFeeTotal.add(tFee);
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}
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receive() external payable {}
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function _getValues(uint256 tAmount)
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private
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view
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returns (
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uint256,
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uint256,
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uint256,
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uint256,
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uint256,
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uint256
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)
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{
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(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
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_getTValues(tAmount, _redisFee, _taxFee);
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uint256 currentRate = _getRate();
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(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) =
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_getRValues(tAmount, tFee, tTeam, currentRate);
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return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
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}
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function _getTValues(
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uint256 tAmount,
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uint256 redisFee,
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uint256 taxFee
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)
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private
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pure
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returns (
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uint256,
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uint256,
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uint256
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)
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{
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uint256 tFee = tAmount.mul(redisFee).div(100);
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uint256 tTeam = tAmount.mul(taxFee).div(100);
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uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
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return (tTransferAmount, tFee, tTeam);
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}
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function _getRValues(
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uint256 tAmount,
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uint256 tFee,
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uint256 tTeam,
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uint256 currentRate
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)
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private
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pure
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returns (
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uint256,
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uint256,
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uint256
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)
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{
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uint256 rAmount = tAmount.mul(currentRate);
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uint256 rFee = tFee.mul(currentRate);
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uint256 rTeam = tTeam.mul(currentRate);
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uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
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return (rAmount, rTransferAmount, rFee);
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}
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function _getRate() private view returns (uint256) {
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(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
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return rSupply.div(tSupply);
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}
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function _getCurrentSupply() private view returns (uint256, uint256) {
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uint256 rSupply = _rTotal;
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uint256 tSupply = _tTotal;
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if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
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return (rSupply, tSupply);
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}
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function setFee(uint256 redisFeeOnBuy, uint256 redisFeeOnSell, uint256 taxFeeOnBuy, uint256 taxFeeOnSell) public onlyOwner {
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_redisFeeOnBuy = redisFeeOnBuy;
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_redisFeeOnSell = redisFeeOnSell;
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_taxFeeOnBuy = taxFeeOnBuy;
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_taxFeeOnSell = taxFeeOnSell;
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require (_redisFeeOnBuy+_redisFeeOnSell+_taxFeeOnBuy+_taxFeeOnSell <= 45);
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}
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//Set maximum transaction
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function setMaxTxnAndWalletSize(uint256 maxTxAmount, uint256 maxWalletSize) public onlyOwner {
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_maxTxAmount = _tTotal*maxTxAmount/100;
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_maxWalletSize = _tTotal*maxWalletSize/100;
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require (_maxTxAmount >= _tTotal/100 && _maxWalletSize >= _tTotal/100,"Must be more than 1%");
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}
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} |
