Updated Correct v2.5 VRF
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parent
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node_modules
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artifacts
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cache
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coverage*
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gasReporterOutput.json
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package.json
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img
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.env
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.*
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README.md
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coverage.json
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deployments
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80
contracts/Raffle.sol
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80
contracts/Raffle.sol
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// SPDX-License-Identifier: Unlicense
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/*
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Raffle Contract
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Enter the lottery (paying some amount)
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Pick a random winner (verifiably random)
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Winner to be selected every X minutes -> completely automated
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Chainlink Oracle -> Randomness, Automated Execution (Chainlink Keeper)
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*/
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pragma solidity ^0.8.7;
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///// UPDATE IMPORTS TO V2.5 /////
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import {VRFConsumerBaseV2Plus} from "@chainlink/contracts/src/v0.8/vrf/dev/VRFConsumerBaseV2Plus.sol";
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import {VRFV2PlusClient} from "@chainlink/contracts/src/v0.8/vrf/dev/libraries/VRFV2PlusClient.sol";
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error Raffle__NotEnoughETHEntered();
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contract Raffle is VRFConsumerBaseV2Plus {
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/* State Variables */
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uint256 private immutable i_entranceFee;
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address payable[] private s_players;
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/* Event */
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event RaffleEnter(address indexed player);
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constructor(
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address vrfCoordinatorV2,
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uint256 entranceFee
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) VRFConsumerBaseV2Plus(vrfCoordinatorV2) {
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i_entranceFee = entranceFee;
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}
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function enterRaffle() public payable {
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// require(msg.value > i_entranceFee, "ETH too less!");
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if (msg.value < i_entranceFee) {
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revert Raffle__NotEnoughETHEntered();
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}
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s_players.push(payable(msg.sender));
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// Events - Update
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}
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function requestRandomWinner() external returns (uint256 requestId) {
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// Use Chainlink VRF V2 & Chainlink keeper
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// https://docs.chain.link/vrf/v2/subscription/examples/get-a-random-number
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// 0xb91d9cab0193d3cda599df11c4889f89c4a9fef9ec403de158ea67ce1f3a9e26
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/**
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* Create subscription at https://vrf.chain.link/ (MetaMask #1)
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* Add Fund To The Created Subsciption Contract (MetaMask #2)
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* Add Consumer
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* Get Subscription ID
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* Open Remix To Prepare Deploy Consumer Contract https://docs.chain.link/vrf/v2-5/migration-from-v2
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* Change To Correct gwei limit hash address at https://docs.chain.link/vrf/v2/subscription/supported-networks
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* Adjust Setting - random words count, confirmation blocks etc.
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* Insert Subscription ID - v2 is uint64 BUT **v2.5 is uint256**
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* Deploy And Get hash address (MetaMask #3)
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* Insert in chainlink consumer (Metamask #4)
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* Ready to use, record down the consumer contract address
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* *
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* v2.5 uint256 Subscription ID - 54852953177758767717007928774683925681326589777506065303357242036079980899870
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* Admin Contract Creator address - 0xc9445e993daea4ba3f1fe1080f0f6f8c46b4d967
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* Consumer address - 0x22eec58ce2cee446051337d71d59c89cb004d1c7
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* Admin Approval Contract address - 0x9DdfaCa8183c41ad55329BdeeD9F6A8d53168B1B
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*/
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// Request Random Number
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//
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}
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function fulfillRandomWords(
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uint256 requestId,
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uint256[] calldata randomWords
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) internal override {}
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function getEntranceFee() public view returns (uint256) {
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return i_entranceFee;
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}
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function getPlayer(uint256 index) public view returns (address) {
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return s_players[index];
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}
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}
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44
package.json
44
package.json
@ -1,20 +1,30 @@
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{
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"license": "Unlicense",
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"devDependencies": {
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"@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers",
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"@nomiclabs/hardhat-etherscan": "^3.1.8",
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"@nomiclabs/hardhat-waffle": "^2.0.6",
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"chai": "^5.1.1",
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"dotenv": "^16.4.5",
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"ethereum-waffle": "^4.0.10",
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"ethers": "^6.13.2",
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"hardhat": "^2.22.7",
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"hardhat-contract-sizer": "^2.10.0",
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"hardhat-deploy": "^0.12.4",
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"hardhat-gas-reporter": "^2.2.0",
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"prettier": "^3.3.3",
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"prettier-plugin-solidity": "^1.3.1",
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"solhint": "^5.0.3",
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"solidity-coverage": "^0.8.12"
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},
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"packageManager": "yarn@1.22.22+sha512.a6b2f7906b721bba3d67d4aff083df04dad64c399707841b7acf00f6b133b7ac24255f2652fa22ae3534329dc6180534e98d17432037ff6fd140556e2bb3137e"
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"@nomicfoundation/hardhat-ethers": "^3.0.2",
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"@nomiclabs/hardhat-ethers": "npm:hardhat-deploy-ethers",
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"@nomiclabs/hardhat-etherscan": "^3.1.8",
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"@nomiclabs/hardhat-waffle": "^2.0.6",
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"chai": "^5.1.1",
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"dotenv": "^16.4.5",
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"ethereum-waffle": "^4.0.10",
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"ethers": "^6.13.2",
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"hardhat": "^2.22.7",
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"hardhat-contract-sizer": "^2.10.0",
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"hardhat-deploy": "^0.12.4",
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"hardhat-gas-reporter": "^2.2.0",
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"prettier": "^3.3.3",
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"prettier-plugin-solidity": "^1.3.1",
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"solhint": "^5.0.3",
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"solidity-coverage": "^0.8.12"
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},
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"dependencies": {
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"@chainlink/contracts": "^1.2.0",
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"@chainlink/test-helpers": "^0.0.7-alpha",
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"@chainlink/token": "^1.1.0",
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"@openzeppelin/contracts": "^5.0.2",
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"babel-eslint": "^10.1.0"
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},
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"packageManager": "yarn@1.22.22+sha512.a6b2f7906b721bba3d67d4aff083df04dad64c399707841b7acf00f6b133b7ac24255f2652fa22ae3534329dc6180534e98d17432037ff6fd140556e2bb3137e"
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}
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