Basic Lottery

Use VRF to generate random number which determines lottery winner. Prerequisite: create a VRF subscription and fund with LINK token.

• A minimum entrance fee is imposed (USD denominated). The amount is converted to Ether (native token of the chain) using Chainlink price feed oracle.
• Admin manually controls when to start and end the lottery.
• After lottery ends, all deposit is sent to the winner.

npm install

# BSC Testnet deploy
hh run scripts/deploy.js --network bscTestnet

# BSC Testnet verify
hh verify --network bscTestnet \
  --constructor-args ./scripts/args/bscTestnet.js \
  0xa7d798621096f761342804272E0752B677E25783

# Rinkeby deploy
run scripts/deploy.js --network rinkeby

# Rinkeby verify
hh verify --network rinkeby \
  --constructor-args ./scripts/args/rinkeby.js \
  0x197B6aA305EE2868D39530F94505987debaa9055

Basic Sample Hardhat Project

This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts.

Try running some of the following tasks:

npx hardhat accounts
npx hardhat compile
npx hardhat clean
npx hardhat test
npx hardhat node
node scripts/sample-script.js
npx hardhat help

======

Tasks

• The story:

  • Project needs initial contribution (seed phase)
    • Users can deposit pre-defined amount for certain benefits
      • Share of treasury/fees
      • Rupee allocation
  • Game Begins
    • Users deposit AVAX and enter every hour to "win"
      • Fee applied
      • Drawing costs 0.01 AVAX
      • Expedited draw for 0.1 AVAX but reduced loser's pool allocation
    • If win:
      • User can withdraw avax at the current value of their rupees
      • Fee applied at claim
      • 3x max payout
      • Percentage of the excess winnings sent to treasury and dev
    • If lose:
      • Incremented loss count up to 5
      • Once 5 consecutive losses are realized, a prize is available to claim from loser's pot
      • Calculated by percentage of investment up to a certain limit
        • As well as reduced by expedited draws to avoid abuse
      • Suggested calculation:
        • User's investment compared to full pool
        • Percentage applied against loser's pool
        • Pay out 20% of that value (up to limit)
      • Fee applied at claim?
  • Excess TVL use case
    • NFT collection which earns rewards (drains TVL overtime to avoid untouchable funds)

• Work on:

  • Chainlink VRF
  • [] Loser's increment
    • [] And loser's pool
  • [] Seed phase of contract
  • [] lastDraw
    • this is set in the fulfillRandomness function
    • and is checked in the draw function
    • set var for drawCooldown (set for an hour?)

• Completed tasks:

  • Incorporate max winnings
    • This is actually not done, since you want to direct some of those excess earnings elsewhere