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LYPTUS Masterchef vs EGG Masterchef

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// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

// .----------------. .----------------. .----------------. .----------------. .----------------.

import "@openzeppelin/contracts/math/SafeMath.sol";

// | .--------------. || .--------------. || .--------------. || .--------------. || .--------------. |

import "./libs/IBEP20.sol";

// | | ___ ____ | || | ____ | || | __ | || | _____ | || | __ | |

import "./libs/SafeBEP20.sol";

// | | |_ ||_ _| | || | .' `. | || | / \ | || | |_ _| | || | / \ | |

import "@openzeppelin/contracts/access/Ownable.sol";

// | | | |_/ / | || | / .--. \ | || | / /\ \ | || | | | | || | / /\ \ | |

// | | | __'. | || | | | | | | || | / ____ \ | || | | | _ | || | / ____ \ | |

// | | _| | \ \_ | || | \ `--' / | || | _/ / \ \_ | || | _| |__/ | | || | _/ / \ \_ | |

// | | |____||____| | || | `.____.' | || ||____| |____|| || | |________| | || ||____| |____|| |

// | | | || | | || | | || | | || | | |

// | '--------------' || '--------------' || '--------------' || '--------------' || '--------------' |

// '----------------' '----------------' '----------------' '----------------' '----------------'

import "./SafeMath.sol";

import "./IBEP20.sol";

import "./SafeBEP20.sol";

import "./Ownable.sol";

import "./LYPTUSToken.sol";

import "./EggToken.sol";

// MasterChef is the master of Lyptus. He can make Lyptus and he is a fair guy.

// MasterChef is the master of Egg. He can make Egg and he is a fair guy.

// Note that it's ownable and the owner wields tremendous power. The ownership

// will be transferred to a governance smart contract once LYPTUS is sufficiently

// will be transferred to a governance smart contract once EGG is sufficiently

// distributed and the community can show to govern itself.

// Have fun reading it. Hopefully it's bug-free. God bless.

contract MasterChef is Ownable {

using SafeMath for uint256;

using SafeBEP20 for IBEP20;

// Info of each user.

struct UserInfo {

uint256 amount; // How many LP tokens the user has provided.

uint256 rewardDebt; // Reward debt. See explanation below.

// We do some fancy math here. Basically, any point in time, the amount of LYPTUSs

// We do some fancy math here. Basically, any point in time, the amount of EGGs

// entitled to a user but is pending to be distributed is:

// pending reward = (user.amount * pool.accLyptusPerShare) - user.rewardDebt

// pending reward = (user.amount * pool.accEggPerShare) - user.rewardDebt

// Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:

// 1. The pool's `accLyptusPerShare` (and `lastRewardBlock`) gets updated.

// 1. The pool's `accEggPerShare` (and `lastRewardBlock`) gets updated.

// 2. User receives the pending reward sent to his/her address.

// 3. User's `amount` gets updated.

// 4. User's `rewardDebt` gets updated.

}

// Info of each pool.

struct PoolInfo {

IBEP20 lpToken; // Address of LP token contract.

uint256 allocPoint; // How many allocation points assigned to this pool. LYPTUSs to distribute per block.

uint256 allocPoint; // How many allocation points assigned to this pool. EGGs to distribute per block.

uint256 lastRewardBlock; // Last block number that LYPTUSs distribution occurs.

uint256 lastRewardBlock; // Last block number that EGGs distribution occurs.

uint256 accLyptusPerShare; // Accumulated LYPTUSs per share, times 1e12. See below.

uint256 accEggPerShare; // Accumulated EGGs per share, times 1e12. See below.

uint16 depositFeeBP; // Deposit fee in basis points

}

// The LYPTUS TOKEN!

// The EGG TOKEN!

LyptusToken public lyptus;

EggToken public egg;

// Dev address.

address public devaddr;

// LYPTUS tokens created per block.

// EGG tokens created per block.

uint256 public lyptusPerBlock;

uint256 public eggPerBlock;

// Bonus muliplier for early lyptus makers.

// Bonus muliplier for early egg makers.

uint256 public constant BONUS_MULTIPLIER = 1;

// Deposit Fee address

address public feeAddress;

// Info of each pool.

PoolInfo[] public poolInfo;

// Info of each user that stakes LP tokens.

mapping (uint256 => mapping (address => UserInfo)) public userInfo;

// Total allocation points. Must be the sum of all allocation points in all pools.

uint256 public totalAllocPoint = 0;

// The block number when LYPTUS mining starts.

// The block number when EGG mining starts.

uint256 public startBlock;

event Deposit(address indexed user, uint256 indexed pid, uint256 amount);

event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);

event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);

constructor(

LyptusToken _lyptus,

EggToken _egg,

address _devaddr,

address _feeAddress,

uint256 _lyptusPerBlock,

uint256 _eggPerBlock,

uint256 _startBlock

) public {

lyptus = _lyptus;

egg = _egg;

devaddr = _devaddr;

feeAddress = _feeAddress;

lyptusPerBlock = _lyptusPerBlock;

eggPerBlock = _eggPerBlock;

startBlock = _startBlock;

}

function poolLength() external view returns (uint256) {

return poolInfo.length;

}

// Add a new lp to the pool. Can only be called by the owner.

// XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.

function add(uint256 _allocPoint, IBEP20 _lpToken, uint16 _depositFeeBP, bool _withUpdate) public onlyOwner {

require(_depositFeeBP <= 10000, "add: invalid deposit fee basis points");

if (_withUpdate) {

massUpdatePools();

}

uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;

totalAllocPoint = totalAllocPoint.add(_allocPoint);

poolInfo.push(PoolInfo({

lpToken: _lpToken,

allocPoint: _allocPoint,

lastRewardBlock: lastRewardBlock,

accLyptusPerShare: 0,

accEggPerShare: 0,

depositFeeBP: _depositFeeBP

}));

}

// Update the given pool's LYPTUS allocation point and deposit fee. Can only be called by the owner.

// Update the given pool's EGG allocation point and deposit fee. Can only be called by the owner.

function set(uint256 _pid, uint256 _allocPoint, uint16 _depositFeeBP, bool _withUpdate) public onlyOwner {

require(_depositFeeBP <= 10000, "set: invalid deposit fee basis points");

if (_withUpdate) {

massUpdatePools();

}

totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);

poolInfo[_pid].allocPoint = _allocPoint;

poolInfo[_pid].depositFeeBP = _depositFeeBP;

}

// Return reward multiplier over the given _from to _to block.

function getMultiplier(uint256 _from, uint256 _to) public view returns (uint256) {

return _to.sub(_from).mul(BONUS_MULTIPLIER);

}

// View function to see pending LYPTUSs on frontend.

// View function to see pending EGGs on frontend.

function pendingLyptus(uint256 _pid, address _user) external view returns (uint256) {

function pendingEgg(uint256 _pid, address _user) external view returns (uint256) {

PoolInfo storage pool = poolInfo[_pid];

UserInfo storage user = userInfo[_pid][_user];

uint256 accLyptusPerShare = pool.accLyptusPerShare;

uint256 accEggPerShare = pool.accEggPerShare;

uint256 lpSupply = pool.lpToken.balanceOf(address(this));

if (block.number > pool.lastRewardBlock && lpSupply != 0) {

uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);

uint256 lyptusReward = multiplier.mul(lyptusPerBlock).mul(pool.allocPoint).div(totalAllocPoint);

uint256 eggReward = multiplier.mul(eggPerBlock).mul(pool.allocPoint).div(totalAllocPoint);

accLyptusPerShare = accLyptusPerShare.add(lyptusReward.mul(1e12).div(lpSupply));

accEggPerShare = accEggPerShare.add(eggReward.mul(1e12).div(lpSupply));

}

return user.amount.mul(accLyptusPerShare).div(1e12).sub(user.rewardDebt);

return user.amount.mul(accEggPerShare).div(1e12).sub(user.rewardDebt);

}

// Update reward variables for all pools. Be careful of gas spending!

function massUpdatePools() public {

uint256 length = poolInfo.length;

for (uint256 pid = 0; pid < length; ++pid) {

updatePool(pid);

}

// Update reward variables of the given pool to be up-to-date.

function updatePool(uint256 _pid) public {

PoolInfo storage pool = poolInfo[_pid];

if (block.number <= pool.lastRewardBlock) {

return;

}

uint256 lpSupply = pool.lpToken.balanceOf(address(this));

if (lpSupply == 0 || pool.allocPoint == 0) {

pool.lastRewardBlock = block.number;

return;

}

uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);

uint256 lyptusReward = multiplier.mul(lyptusPerBlock).mul(pool.allocPoint).div(totalAllocPoint);

uint256 eggReward = multiplier.mul(eggPerBlock).mul(pool.allocPoint).div(totalAllocPoint);

lyptus.mint(devaddr, lyptusReward.div(10));

egg.mint(devaddr, eggReward.div(10));

lyptus.mint(address(this), lyptusReward);

egg.mint(address(this), eggReward);

pool.accLyptusPerShare = pool.accLyptusPerShare.add(lyptusReward.mul(1e12).div(lpSupply));

pool.accEggPerShare = pool.accEggPerShare.add(eggReward.mul(1e12).div(lpSupply));

pool.lastRewardBlock = block.number;

}

// Deposit LP tokens to MasterChef for LYPTUS allocation.

// Deposit LP tokens to MasterChef for EGG allocation.

function deposit(uint256 _pid, uint256 _amount) public {

PoolInfo storage pool = poolInfo[_pid];

UserInfo storage user = userInfo[_pid][msg.sender];

updatePool(_pid);

if (user.amount > 0) {

uint256 pending = user.amount.mul(pool.accLyptusPerShare).div(1e12).sub(user.rewardDebt);

uint256 pending = user.amount.mul(pool.accEggPerShare).div(1e12).sub(user.rewardDebt);

if(pending > 0) {

safeLyptusTransfer(msg.sender, pending);

safeEggTransfer(msg.sender, pending);

}

if(_amount > 0) {

pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);

if(pool.depositFeeBP > 0){

uint256 depositFee = _amount.mul(pool.depositFeeBP).div(10000);

pool.lpToken.safeTransfer(feeAddress, depositFee);

user.amount = user.amount.add(_amount).sub(depositFee);

}else{

user.amount = user.amount.add(_amount);

}

user.rewardDebt = user.amount.mul(pool.accLyptusPerShare).div(1e12);

user.rewardDebt = user.amount.mul(pool.accEggPerShare).div(1e12);

emit Deposit(msg.sender, _pid, _amount);

}

// Withdraw LP tokens from MasterChef.

function withdraw(uint256 _pid, uint256 _amount) public {

PoolInfo storage pool = poolInfo[_pid];

UserInfo storage user = userInfo[_pid][msg.sender];

require(user.amount >= _amount, "withdraw: not good");

updatePool(_pid);

uint256 pending = user.amount.mul(pool.accLyptusPerShare).div(1e12).sub(user.rewardDebt);

uint256 pending = user.amount.mul(pool.accEggPerShare).div(1e12).sub(user.rewardDebt);

if(pending > 0) {

safeLyptusTransfer(msg.sender, pending);

safeEggTransfer(msg.sender, pending);

}

if(_amount > 0) {

user.amount = user.amount.sub(_amount);

pool.lpToken.safeTransfer(address(msg.sender), _amount);

}

user.rewardDebt = user.amount.mul(pool.accLyptusPerShare).div(1e12);

user.rewardDebt = user.amount.mul(pool.accEggPerShare).div(1e12);

emit Withdraw(msg.sender, _pid, _amount);

}

// Withdraw without caring about rewards. EMERGENCY ONLY.

function emergencyWithdraw(uint256 _pid) public {

PoolInfo storage pool = poolInfo[_pid];

UserInfo storage user = userInfo[_pid][msg.sender];

uint256 amount = user.amount;

user.amount = 0;

user.rewardDebt = 0;

pool.lpToken.safeTransfer(address(msg.sender), amount);

emit EmergencyWithdraw(msg.sender, _pid, amount);

}

// Safe lyptus transfer function, just in case if rounding error causes pool to not have enough LYPTUSs.

// Safe egg transfer function, just in case if rounding error causes pool to not have enough EGGs.

function safeLyptusTransfer(address _to, uint256 _amount) internal {

function safeEggTransfer(address _to, uint256 _amount) internal {

uint256 lyptusBal = lyptus.balanceOf(address(this));

uint256 eggBal = egg.balanceOf(address(this));

if (_amount > lyptusBal) {

if (_amount > eggBal) {

lyptus.transfer(_to, lyptusBal);

egg.transfer(_to, eggBal);

} else {

lyptus.transfer(_to, _amount);

egg.transfer(_to, _amount);

}

// Update dev address by the previous dev.

function dev(address _devaddr) public {

require(msg.sender == devaddr, "dev: wut?");

devaddr = _devaddr;

}

function setFeeAddress(address _feeAddress) public{

require(msg.sender == feeAddress, "setFeeAddress: FORBIDDEN");

feeAddress = _feeAddress;

}

//Pancake has to add hidden dummy pools inorder to alter the emission, here we make it simple and transparent to all.

function updateEmissionRate(uint256 _lyptusPerBlock) public onlyOwner {

function updateEmissionRate(uint256 _eggPerBlock) public onlyOwner {

massUpdatePools();

lyptusPerBlock = _lyptusPerBlock;

eggPerBlock = _eggPerBlock;

}

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// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

//  .----------------.  .----------------.  .----------------.  .----------------.  .----------------. 
// | .--------------. || .--------------. || .--------------. || .--------------. || .--------------. |
// | |  ___  ____   | || |     ____     | || |      __      | || |   _____      | || |      __      | |
// | | |_  ||_  _|  | || |   .'    `.   | || |     /  \     | || |  |_   _|     | || |     /  \     | |
// | |   | |_/ /    | || |  /  .--.  \  | || |    / /\ \    | || |    | |       | || |    / /\ \    | |
// | |   |  __'.    | || |  | |    | |  | || |   / ____ \   | || |    | |   _   | || |   / ____ \   | |
// | |  _| |  \ \_  | || |  \  `--'  /  | || | _/ /    \ \_ | || |   _| |__/ |  | || | _/ /    \ \_ | |
// | | |____||____| | || |   `.____.'   | || ||____|  |____|| || |  |________|  | || ||____|  |____|| |
// | |              | || |              | || |              | || |              | || |              | |
// | '--------------' || '--------------' || '--------------' || '--------------' || '--------------' |
// '----------------'  '----------------'  '----------------'  '----------------'  '----------------'

import "./SafeMath.sol";
import "./IBEP20.sol";
import "./SafeBEP20.sol";
import "./Ownable.sol";

import "./LYPTUSToken.sol";

// MasterChef is the master of Lyptus. He can make Lyptus and he is a fair guy.
//
// Note that it's ownable and the owner wields tremendous power. The ownership
// will be transferred to a governance smart contract once LYPTUS is sufficiently
// distributed and the community can show to govern itself.
//
// Have fun reading it. Hopefully it's bug-free. God bless.
contract MasterChef is Ownable {
    using SafeMath for uint256;
    using SafeBEP20 for IBEP20;

// Info of each user.
    struct UserInfo {
        uint256 amount;         // How many LP tokens the user has provided.
        uint256 rewardDebt;     // Reward debt. See explanation below.
        //
        // We do some fancy math here. Basically, any point in time, the amount of LYPTUSs
        // entitled to a user but is pending to be distributed is:
        //
        //   pending reward = (user.amount * pool.accLyptusPerShare) - user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accLyptusPerShare` (and `lastRewardBlock`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }

// Info of each pool.
    struct PoolInfo {
        IBEP20 lpToken;           // Address of LP token contract.
        uint256 allocPoint;       // How many allocation points assigned to this pool. LYPTUSs to distribute per block.
        uint256 lastRewardBlock;  // Last block number that LYPTUSs distribution occurs.
        uint256 accLyptusPerShare;   // Accumulated LYPTUSs per share, times 1e12. See below.
        uint16 depositFeeBP;      // Deposit fee in basis points
    }

// The LYPTUS TOKEN!
    LyptusToken public lyptus;
    // Dev address.
    address public devaddr;
    // LYPTUS tokens created per block.
    uint256 public lyptusPerBlock;
    // Bonus muliplier for early lyptus makers.
    uint256 public constant BONUS_MULTIPLIER = 1;
    // Deposit Fee address
    address public feeAddress;

// Info of each pool.
    PoolInfo[] public poolInfo;
    // Info of each user that stakes LP tokens.
    mapping (uint256 => mapping (address => UserInfo)) public userInfo;
    // Total allocation points. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;
    // The block number when LYPTUS mining starts.
    uint256 public startBlock;

event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);

constructor(
        LyptusToken _lyptus,
        address _devaddr,
        address _feeAddress,
        uint256 _lyptusPerBlock,
        uint256 _startBlock
    ) public {
        lyptus = _lyptus;
        devaddr = _devaddr;
        feeAddress = _feeAddress;
        lyptusPerBlock = _lyptusPerBlock;
        startBlock = _startBlock;
    }

function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

// Add a new lp to the pool. Can only be called by the owner.
    // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
    function add(uint256 _allocPoint, IBEP20 _lpToken, uint16 _depositFeeBP, bool _withUpdate) public onlyOwner {
        require(_depositFeeBP <= 10000, "add: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;
        totalAllocPoint = totalAllocPoint.add(_allocPoint);
        poolInfo.push(PoolInfo({
            lpToken: _lpToken,
            allocPoint: _allocPoint,
            lastRewardBlock: lastRewardBlock,
            accLyptusPerShare: 0,
            depositFeeBP: _depositFeeBP
        }));
    }

// Update the given pool's LYPTUS allocation point and deposit fee. Can only be called by the owner.
    function set(uint256 _pid, uint256 _allocPoint, uint16 _depositFeeBP, bool _withUpdate) public onlyOwner {
        require(_depositFeeBP <= 10000, "set: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
        poolInfo[_pid].allocPoint = _allocPoint;
        poolInfo[_pid].depositFeeBP = _depositFeeBP;
    }

// Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to) public view returns (uint256) {
        return _to.sub(_from).mul(BONUS_MULTIPLIER);
    }

// View function to see pending LYPTUSs on frontend.
    function pendingLyptus(uint256 _pid, address _user) external view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accLyptusPerShare = pool.accLyptusPerShare;
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (block.number > pool.lastRewardBlock && lpSupply != 0) {
            uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
            uint256 lyptusReward = multiplier.mul(lyptusPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
            accLyptusPerShare = accLyptusPerShare.add(lyptusReward.mul(1e12).div(lpSupply));
        }
        return user.amount.mul(accLyptusPerShare).div(1e12).sub(user.rewardDebt);
    }

// Update reward variables for all pools. Be careful of gas spending!
    function massUpdatePools() public {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            updatePool(pid);
        }
    }

// Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (lpSupply == 0 || pool.allocPoint == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 lyptusReward = multiplier.mul(lyptusPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
        lyptus.mint(devaddr, lyptusReward.div(10));
        lyptus.mint(address(this), lyptusReward);
        pool.accLyptusPerShare = pool.accLyptusPerShare.add(lyptusReward.mul(1e12).div(lpSupply));
        pool.lastRewardBlock = block.number;
    }

// Deposit LP tokens to MasterChef for LYPTUS allocation.
    function deposit(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);
        if (user.amount > 0) {
            uint256 pending = user.amount.mul(pool.accLyptusPerShare).div(1e12).sub(user.rewardDebt);
            if(pending > 0) {
                safeLyptusTransfer(msg.sender, pending);
            }
        }
        if(_amount > 0) {
            pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
            if(pool.depositFeeBP > 0){
                uint256 depositFee = _amount.mul(pool.depositFeeBP).div(10000);
                pool.lpToken.safeTransfer(feeAddress, depositFee);
                user.amount = user.amount.add(_amount).sub(depositFee);
            }else{
                user.amount = user.amount.add(_amount);
            }
        }
        user.rewardDebt = user.amount.mul(pool.accLyptusPerShare).div(1e12);
        emit Deposit(msg.sender, _pid, _amount);
    }

// Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 pending = user.amount.mul(pool.accLyptusPerShare).div(1e12).sub(user.rewardDebt);
        if(pending > 0) {
            safeLyptusTransfer(msg.sender, pending);
        }
        if(_amount > 0) {
            user.amount = user.amount.sub(_amount);
            pool.lpToken.safeTransfer(address(msg.sender), _amount);
        }
        user.rewardDebt = user.amount.mul(pool.accLyptusPerShare).div(1e12);
        emit Withdraw(msg.sender, _pid, _amount);
    }

// Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        uint256 amount = user.amount;
        user.amount = 0;
        user.rewardDebt = 0;
        pool.lpToken.safeTransfer(address(msg.sender), amount);
        emit EmergencyWithdraw(msg.sender, _pid, amount);
    }

// Safe lyptus transfer function, just in case if rounding error causes pool to not have enough LYPTUSs.
    function safeLyptusTransfer(address _to, uint256 _amount) internal {
        uint256 lyptusBal = lyptus.balanceOf(address(this));
        if (_amount > lyptusBal) {
            lyptus.transfer(_to, lyptusBal);
        } else {
            lyptus.transfer(_to, _amount);
        }
    }

// Update dev address by the previous dev.
    function dev(address _devaddr) public {
        require(msg.sender == devaddr, "dev: wut?");
        devaddr = _devaddr;
    }

function setFeeAddress(address _feeAddress) public{
        require(msg.sender == feeAddress, "setFeeAddress: FORBIDDEN");
        feeAddress = _feeAddress;
    }

//Pancake has to add hidden dummy pools inorder to alter the emission, here we make it simple and transparent to all.
    function updateEmissionRate(uint256 _lyptusPerBlock) public onlyOwner {
        massUpdatePools();
        lyptusPerBlock = _lyptusPerBlock;
    }
}

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// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

import "@openzeppelin/contracts/math/SafeMath.sol";
import "./libs/IBEP20.sol";
import "./libs/SafeBEP20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

import "./EggToken.sol";

// MasterChef is the master of Egg. He can make Egg and he is a fair guy.
//
// Note that it's ownable and the owner wields tremendous power. The ownership
// will be transferred to a governance smart contract once EGG is sufficiently
// distributed and the community can show to govern itself.
//
// Have fun reading it. Hopefully it's bug-free. God bless.
contract MasterChef is Ownable {
    using SafeMath for uint256;
    using SafeBEP20 for IBEP20;

// Info of each user.
    struct UserInfo {
        uint256 amount;         // How many LP tokens the user has provided.
        uint256 rewardDebt;     // Reward debt. See explanation below.
        //
        // We do some fancy math here. Basically, any point in time, the amount of EGGs
        // entitled to a user but is pending to be distributed is:
        //
        //   pending reward = (user.amount * pool.accEggPerShare) - user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accEggPerShare` (and `lastRewardBlock`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }

// Info of each pool.
    struct PoolInfo {
        IBEP20 lpToken;           // Address of LP token contract.
        uint256 allocPoint;       // How many allocation points assigned to this pool. EGGs to distribute per block.
        uint256 lastRewardBlock;  // Last block number that EGGs distribution occurs.
        uint256 accEggPerShare;   // Accumulated EGGs per share, times 1e12. See below.
        uint16 depositFeeBP;      // Deposit fee in basis points
    }

// The EGG TOKEN!
    EggToken public egg;
    // Dev address.
    address public devaddr;
    // EGG tokens created per block.
    uint256 public eggPerBlock;
    // Bonus muliplier for early egg makers.
    uint256 public constant BONUS_MULTIPLIER = 1;
    // Deposit Fee address
    address public feeAddress;

constructor(
        EggToken _egg,
        address _devaddr,
        address _feeAddress,
        uint256 _eggPerBlock,
        uint256 _startBlock
    ) public {
        egg = _egg;
        devaddr = _devaddr;
        feeAddress = _feeAddress;
        eggPerBlock = _eggPerBlock;
        startBlock = _startBlock;
    }

function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

// Add a new lp to the pool. Can only be called by the owner.
    // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
    function add(uint256 _allocPoint, IBEP20 _lpToken, uint16 _depositFeeBP, bool _withUpdate) public onlyOwner {
        require(_depositFeeBP <= 10000, "add: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;
        totalAllocPoint = totalAllocPoint.add(_allocPoint);
        poolInfo.push(PoolInfo({
            lpToken: _lpToken,
            allocPoint: _allocPoint,
            lastRewardBlock: lastRewardBlock,
            accEggPerShare: 0,
            depositFeeBP: _depositFeeBP
        }));
    }

// Update the given pool's EGG allocation point and deposit fee. Can only be called by the owner.
    function set(uint256 _pid, uint256 _allocPoint, uint16 _depositFeeBP, bool _withUpdate) public onlyOwner {
        require(_depositFeeBP <= 10000, "set: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
        poolInfo[_pid].allocPoint = _allocPoint;
        poolInfo[_pid].depositFeeBP = _depositFeeBP;
    }

// View function to see pending EGGs on frontend.
    function pendingEgg(uint256 _pid, address _user) external view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accEggPerShare = pool.accEggPerShare;
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (block.number > pool.lastRewardBlock && lpSupply != 0) {
            uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
            uint256 eggReward = multiplier.mul(eggPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
            accEggPerShare = accEggPerShare.add(eggReward.mul(1e12).div(lpSupply));
        }
        return user.amount.mul(accEggPerShare).div(1e12).sub(user.rewardDebt);
    }

// Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (lpSupply == 0 || pool.allocPoint == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 eggReward = multiplier.mul(eggPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
        egg.mint(devaddr, eggReward.div(10));
        egg.mint(address(this), eggReward);
        pool.accEggPerShare = pool.accEggPerShare.add(eggReward.mul(1e12).div(lpSupply));
        pool.lastRewardBlock = block.number;
    }

// Deposit LP tokens to MasterChef for EGG allocation.
    function deposit(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);
        if (user.amount > 0) {
            uint256 pending = user.amount.mul(pool.accEggPerShare).div(1e12).sub(user.rewardDebt);
            if(pending > 0) {
                safeEggTransfer(msg.sender, pending);
            }
        }
        if(_amount > 0) {
            pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
            if(pool.depositFeeBP > 0){
                uint256 depositFee = _amount.mul(pool.depositFeeBP).div(10000);
                pool.lpToken.safeTransfer(feeAddress, depositFee);
                user.amount = user.amount.add(_amount).sub(depositFee);
            }else{
                user.amount = user.amount.add(_amount);
            }
        }
        user.rewardDebt = user.amount.mul(pool.accEggPerShare).div(1e12);
        emit Deposit(msg.sender, _pid, _amount);
    }

// Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 pending = user.amount.mul(pool.accEggPerShare).div(1e12).sub(user.rewardDebt);
        if(pending > 0) {
            safeEggTransfer(msg.sender, pending);
        }
        if(_amount > 0) {
            user.amount = user.amount.sub(_amount);
            pool.lpToken.safeTransfer(address(msg.sender), _amount);
        }
        user.rewardDebt = user.amount.mul(pool.accEggPerShare).div(1e12);
        emit Withdraw(msg.sender, _pid, _amount);
    }

// Safe egg transfer function, just in case if rounding error causes pool to not have enough EGGs.
    function safeEggTransfer(address _to, uint256 _amount) internal {
        uint256 eggBal = egg.balanceOf(address(this));
        if (_amount > eggBal) {
            egg.transfer(_to, eggBal);
        } else {
            egg.transfer(_to, _amount);
        }
    }

// Update dev address by the previous dev.
    function dev(address _devaddr) public {
        require(msg.sender == devaddr, "dev: wut?");
        devaddr = _devaddr;
    }

function setFeeAddress(address _feeAddress) public{
        require(msg.sender == feeAddress, "setFeeAddress: FORBIDDEN");
        feeAddress = _feeAddress;
    }

//Pancake has to add hidden dummy pools inorder to alter the emission, here we make it simple and transparent to all.
    function updateEmissionRate(uint256 _eggPerBlock) public onlyOwner {
        massUpdatePools();
        eggPerBlock = _eggPerBlock;
    }
}