Farm ERC-1155 NFT by staking ERC-20 LP Tokens

Video Explanation: https://youtu.be/vIcf74CvsCs

• NFT's are deposited into this contract, having some Price as points associated to them.
• In order to claim an NFT, the user must have sufficient points to reach Price threshold.
• To increase points balance, user must deposit lp tokens to this contract.
• points balance increases dynamically with each passing second allowing user to Farm NFTs!

• Supports ERC-1155 NFT
• Stake LP tokens.
• Rate of NFT accumulation proportional to amount of LP tokens user is providing.
• Farm for all NFTs at once. Choose particular NFTs on claim.
• Resume farming from where left, if LP tokens withdrawn in between.
• Claim all eligible random NFTs with farmed points balance.
• Withdraw LP tokens, and claim NFTs in single transaction.

constructor(uint256 _emissionRate, IERC20 _lpToken) public

_emissionRate: points generated per LP token (wei) per second staked by user

_lpToken: token address to be staked

function addNFT(
        address contractAddress,    // token contract address. Only ERC-1155 NFT Supported!
        uint256 id,                 // token id
        uint256 total,              // amount of NFTs deposited to farm (need to approve before)
        uint256 price               // price in `points`
    ) external;

Can only be called by owner. To add ERC-1155 NFT to be farmed by others. Owner must have approved contract to transfer NFT before calling this function.

function deposit(uint256 _amount) external;

Called by user to stake _amount of LP tokens in the contract. User must have approved contract to spend at least _amount of LP tokens.

function pointsBalance(address userAddress) public view returns (uint256) 

Dynamic function to get points balance accumulated till now.

function claim(uint256 _nftIndex, uint256 _quantity) public;

Allow user to claim _quantity of NFT at index _nftIndex in nftInfo array, if sufficient points accumulated (else transaction reverts). NFTs are farmed and sent to user address.

function claimRandom() public;

Allow user to claim random NFTs from the NFT pool until they exhaust their point balance.

function withdraw(uint256 _amount) public;

Allow user to withdraw _amount of LP tokens. Reverts if _amount exceeds deposited LP tokens by user.

function exit() external;

Allow user to claim random NFTs and withdraw all LP tokens from contract.

1. Install Required packages. npm i

2. Compile contracts truffle compile

3. Run tests. Run these commands parallelly, one after another: ganache-cli npm run tests