//SPDX-License-Identifier: GPL v3

pragma solidity >=0.8.0;


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

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    constructor() {
        _transferOwnership(_msgSender());
    }
    function owner() public view virtual returns (address) {
        return _owner;
    }
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

interface EXP20 {
    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);
}

interface EXP20Metadata is EXP20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}


contract EXP is EXP20Metadata, Ownable {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;
    uint256 private _maxSupply = 10000000 ether;
    uint256 private _totalBurned;
    string private _name = "DwellersEXP";
    string private _symbol= "EXP";
    bool experienceInitiated = false;


    constructor() {
    }

    function initExperience(address DwellersStaking) external {
        require(!experienceInitiated, "Experience can only be initiated once");
        _mint(msg.sender, 750000 ether);
        _mint(DwellersStaking, 9250000 ether);
    }
    function name() public view virtual override returns (string memory) {

        return _name;
    }
    function symbol() public view virtual override returns (string memory) {

        return _symbol;
    }
    function decimals() public view virtual override returns (uint8) {

        return 18;
    }
    function totalSupply() public view virtual override returns (uint256) {

        return _totalSupply;
    }
    function balanceOf(address account) public view virtual override returns (uint256) {

        return _balances[account];
    }
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }
    function allowance(address owner, address spender) public view virtual override returns (uint256) {

        return _allowances[owner][spender];
    }
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    function totalBurned() public view returns(uint256){
        return(_totalBurned);
    }

    function transferFrom(address sender,address recipient,uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "EXP: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "EXP: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }
    function withdrawToken(address token) public onlyOwner {

          require(EXP20(token).transfer(msg.sender, EXP20(token).balanceOf(address(this))), "EXP: Cannot withdraw token");
    }
    function burnFrom(address owner, uint256 amount) public virtual returns(bool){
        _burn(owner, amount);
        uint256 currentAllowance = _allowances[owner][_msgSender()];
        require(currentAllowance >= amount, "EXP: transfer amount exceeds allowance");
         unchecked {
            _approve(owner, _msgSender(), currentAllowance - amount);
        }
        return true;
    }
    function _transfer(address sender,address recipient,uint256 amount) internal virtual {
        require(sender != address(0), "EXP: transfer from the zero address");
        require(recipient != address(0), "EXP: transfer to the zero address");
        _beforeTokenTransfer(sender, recipient, amount);
        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "EXP: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;
        emit Transfer(sender, recipient, amount);
        _afterTokenTransfer(sender, recipient, amount);
    }
    function _mint(address account, uint256 amount) internal virtual {
        require(_totalSupply <= _maxSupply, "EXP: Max Supply reached, cannot mint anymore");
        require(account != address(0), "EXP: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "EXP: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "EXP: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;
        _totalBurned += amount;
        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }
    function _approve(address owner,address spender,uint256 amount) internal virtual {
        require(owner != address(0), "EXP: approve from the zero address");
        require(spender != address(0), "EXP: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
    function _beforeTokenTransfer(address from,address to,uint256 amount) internal virtual {
    }
    function _afterTokenTransfer(address from,address to,uint256 amount) internal virtual {
    }
}

{
  "compilationTarget": {
    "EXP.sol": "EXP"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}