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max-clinch/MilliToken.sol

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MillionaireGame.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "miliToken.sol";
contract MillionaireGame is Ownable(msg.sender) {
using SafeMath for uint256;
uint256 public currentQuestionIndex;
uint256 public totalPrizePool;
uint256 public constant MAX_QUESTIONS = 100; // Changed to accommodate more questions
uint256 public constant TIME_LIMIT = 600; // Time limit for answering each question (in seconds)
uint256 public constant COOLDOWN_PERIOD = 4 days; // Cooldown period for playing again
uint256 public constant LIFELINE_FEE = 1; // Fee for using lifeline in token units
struct Question {
string question;
string[4] choices;
string correctChoice; // Changed to string type for answers
uint256 difficultyLevel;
}
Question[MAX_QUESTIONS] public questions;
mapping(address => uint256) public participantBalances;
mapping(address => bool) public isParticipant;
mapping(address => uint256) public lastPlayedTimestamp;
address[] public leaderboard;
ERC20 public token;
event QuestionAsked(string question, string[4] choices);
event PrizeWon(address winner, uint256 amount);
event GameEnded();
event LifelineUsed(address user, string lifelineType);
constructor(address _tokenAddress) {
token = ERC20(_tokenAddress);
currentQuestionIndex = 0;
totalPrizePool = 0;
// Initialize questions (simplified for example)
questions[0] = Question(
"What is the capital of France?",
["Paris", "London", "Berlin", "Madrid"],
"Paris",
1
);
questions[1] = Question(
"Which planet is known as the Red Planet?",
["Mars", "Venus", "Jupiter", "Saturn"],
"Mars",
1
);
questions[2] = Question(
"Who wrote 'To Kill a Mockingbird'?",
["Harper Lee", "Stephen King", "J.K. Rowling", "Charles Dickens"],
"Harper Lee",
1
);
questions[3] = Question(
"What is the largest mammal in the world?",
["Elephant", "Blue Whale", "Giraffe", "Hippopotamus"],
"Blue Whale",
1
);
questions[4] = Question(
"Which country is home to the kangaroo?",
["Australia", "Brazil", "Canada", "India"],
"Australia",
1
);
questions[5] = Question(
"Who is the CEO of Tesla Inc.?",
["Elon Musk", "Jeff Bezos", "Bill Gates", "Mark Zuckerberg"],
"Elon Musk",
1
);
questions[6] = Question(
"Which element has the chemical symbol 'Fe'?",
["Iron", "Gold", "Silver", "Copper"],
"Iron",
1
);
questions[7] = Question(
"What is the capital of Japan?",
["Tokyo", "Seoul", "Beijing", "Bangkok"],
"Tokyo",
1
);
questions[8] = Question(
"Who painted the Mona Lisa?",
[
"Leonardo da Vinci",
"Vincent van Gogh",
"Pablo Picasso",
"Michelangelo"
],
"Leonardo da Vinci",
1
);
questions[9] = Question(
"What is the boiling point of water in Celsius?",
["100\u00B0C", "0\u00B0C", "50\u00B0C", "200\u00B0C"],
"100\u00B0C",
1
);
questions[10] = Question(
"What is the chemical symbol for gold?",
["Au", "Ag", "Hg", "Pt"],
"Au",
1
);
questions[11] = Question(
"Which continent is the largest by land area?",
["Asia", "Africa", "North America", "South America"],
"Asia",
1
);
questions[12] = Question(
"Who discovered penicillin?",
[
"Alexander Fleming",
"Marie Curie",
"Louis Pasteur",
"Albert Einstein"
],
"Alexander Fleming",
1
);
questions[13] = Question(
"What is the main ingredient in guacamole?",
["Avocado", "Tomato", "Onion", "Lemon"],
"Avocado",
1
);
questions[14] = Question(
"Which planet is closest to the sun?",
["Mercury", "Venus", "Earth", "Mars"],
"Mercury",
1
);
questions[15] = Question(
"What is the currency of Japan?",
["Yen", "Won", "Dollar", "Euro"],
"Yen",
1
);
questions[16] = Question(
"Who is known as the 'Father of Computer'?",
["Charles Babbage", "Alan Turing", "Steve Jobs", "Bill Gates"],
"Charles Babbage",
1
);
questions[17] = Question(
"Which gas is most abundant in the Earth's atmosphere?",
["Nitrogen", "Oxygen", "Carbon Dioxide", "Argon"],
"Nitrogen",
1
);
questions[18] = Question(
"Which planet is known as the 'Morning Star'?",
["Venus", "Mars", "Jupiter", "Saturn"],
"Venus",
1
);
questions[19] = Question(
"What is the chemical symbol for sodium?",
["Na", "So", "Sn", "Si"],
"Na",
1
);
questions[20] = Question(
"Who wrote 'Romeo and Juliet'?",
[
"William Shakespeare",
"Jane Austen",
"Mark Twain",
"Charles Dickens"
],
"William Shakespeare",
1
);
questions[21] = Question(
"What is the capital of Brazil?",
["Brasilia", "Rio de Janeiro", "Sao Paulo", "Salvador"],
"Brasilia",
1
);
questions[22] = Question(
"What is the largest organ in the human body?",
["Skin", "Liver", "Heart", "Brain"],
"Skin",
1
);
questions[23] = Question(
"Who is the author of 'The Great Gatsby'?",
[
"F. Scott Fitzgerald",
"Ernest Hemingway",
"William Faulkner",
"John Steinbeck"
],
"F. Scott Fitzgerald",
1
);
questions[24] = Question(
"What is the chemical symbol for oxygen?",
["O", "Ox", "O2", "O3"],
"O",
1
);
questions[25] = Question(
"Which city is known as the 'City of Love'?",
["Paris", "Rome", "Venice", "Barcelona"],
"Paris",
1
);
questions[26] = Question(
"What is the largest ocean on Earth?",
["Pacific Ocean", "Atlantic Ocean", "Indian Ocean", "Arctic Ocean"],
"Pacific Ocean",
1
);
questions[27] = Question(
"Who painted the ceiling of the Sistine Chapel?",
["Michelangelo", "Leonardo da Vinci", "Raphael", "Donatello"],
"Michelangelo",
1
);
questions[28] = Question(
"What is the chemical symbol for carbon?",
["C", "Ca", "Co", "Cr"],
"C",
1
);
questions[29] = Question(
"Which country is known as the 'Land of the Rising Sun'?",
["Japan", "China", "Korea", "Vietnam"],
"Japan",
1
);
questions[30] = Question(
"Who wrote 'Harry Potter' series?",
[
"J.K. Rowling",
"Stephen King",
"George R.R. Martin",
"J.R.R. Tolkien"
],
"J.K. Rowling",
1
);
questions[31] = Question(
"What is the hardest natural substance on Earth?",
["Diamond", "Steel", "Titanium", "Graphite"],
"Diamond",
1
);
questions[32] = Question(
"What is the tallest mountain in the world?",
["Mount Everest", "K2", "Kangchenjunga", "Lhotse"],
"Mount Everest",
1
);
questions[33] = Question(
"Who is known as the 'Queen of Soul'?",
["Aretha Franklin", "Whitney Houston", "Beyonce", "Mariah Carey"],
"Aretha Franklin",
1
);
questions[34] = Question(
"Which planet is known as the 'Evening Star'?",
["Venus", "Mars", "Jupiter", "Saturn"],
"Venus",
1
);
questions[35] = Question(
"What is the chemical symbol for silver?",
["Ag", "Si", "Sv", "Sl"],
"Ag",
1
);
questions[36] = Question(
"Who was the first man to walk on the moon?",
["Neil Armstrong", "Buzz Aldrin", "Yuri Gagarin", "Alan Shepard"],
"Neil Armstrong",
1
);
questions[37] = Question(
"What is the capital of Italy?",
["Rome", "Milan", "Florence", "Naples"],
"Rome",
1
);
questions[38] = Question(
"What is the smallest country in the world?",
["Vatican City", "Monaco", "San Marino", "Liechtenstein"],
"Vatican City",
1
);
questions[39] = Question(
"Who is the author of 'War and Peace'?",
[
"Leo Tolstoy",
"Fyodor Dostoevsky",
"Anton Chekhov",
"Ivan Turgenev"
],
"Leo Tolstoy",
1
);
questions[40] = Question(
"What is the chemical symbol for helium?",
["He", "Hl", "Hm", "Hn"],
"He",
1
);
questions[41] = Question(
"Which country is known as the 'Land of the Midnight Sun'?",
["Norway", "Sweden", "Finland", "Iceland"],
"Norway",
1
);
questions[42] = Question(
"Who is the director of the movie 'Schindler's List'?",
[
"Steven Spielberg",
"Martin Scorsese",
"Quentin Tarantino",
"Alfred Hitchcock"
],
"Steven Spielberg",
1
);
questions[43] = Question(
"What is the chemical symbol for potassium?",
["K", "Ka", "Kp", "Ko"],
"K",
1
);
questions[44] = Question(
"Who invented the telephone?",
[
"Alexander Graham Bell",
"Thomas Edison",
"Nikola Tesla",
"Guglielmo Marconi"
],
"Alexander Graham Bell",
1
);
questions[45] = Question(
"What is the largest desert in the world?",
[
"Sahara Desert",
"Arctic Desert",
"Gobi Desert",
"Kalahari Desert"
],
"Sahara Desert",
1
);
questions[46] = Question(
"Who painted 'Starry Night'?",
[
"Vincent van Gogh",
"Pablo Picasso",
"Leonardo da Vinci",
"Claude Monet"
],
"Vincent van Gogh",
1
);
questions[47] = Question(
"What is the chemical symbol for lead?",
["Pb", "Pl", "Pd", "Pe"],
"Pb",
1
);
questions[48] = Question(
"Who wrote 'The Catcher in the Rye'?",
[
"J.D. Salinger",
"F. Scott Fitzgerald",
"Ernest Hemingway",
"Mark Twain"
],
"J.D. Salinger",
1
);
questions[49] = Question(
"What is the chemical symbol for iron?",
["Fe", "Ir", "In", "Fr"],
"Fe",
1
);
questions[50] = Question(
"Which river is the longest in the world?",
["Nile", "Amazon", "Yangtze", "Mississippi"],
"Nile",
1
);
questions[51] = Question(
"Who founded Microsoft?",
["Bill Gates", "Steve Jobs", "Jeff Bezos", "Larry Page"],
"Bill Gates",
1
);
questions[52] = Question(
"What is the capital of Spain?",
["Madrid", "Barcelona", "Valencia", "Seville"],
"Madrid",
1
);
questions[53] = Question(
"What is the chemical symbol for calcium?",
["Ca", "Ce", "Cm", "Cn"],
"Ca",
1
);
questions[54] = Question(
"Who wrote '1984'?",
[
"George Orwell",
"Aldous Huxley",
"Ray Bradbury",
"Margaret Atwood"
],
"George Orwell",
1
);
questions[55] = Question(
"Which animal is known as the 'King of the Jungle'?",
["Lion", "Tiger", "Leopard", "Cheetah"],
"Lion",
1
);
questions[56] = Question(
"What is the chemical symbol for copper?",
["Cu", "Co", "Cp", "Ct"],
"Cu",
1
);
questions[57] = Question(
"Who painted 'The Last Supper'?",
["Leonardo da Vinci", "Michelangelo", "Raphael", "Donatello"],
"Leonardo da Vinci",
1
);
questions[58] = Question(
"Which planet is known as the 'Red Planet'?",
["Mars", "Venus", "Jupiter", "Mercury"],
"Mars",
1
);
questions[59] = Question(
"What is the chemical symbol for nitrogen?",
["N", "Ni", "Ne", "Na"],
"N",
1
);
questions[60] = Question(
"Who discovered gravity?",
[
"Isaac Newton",
"Galileo Galilei",
"Albert Einstein",
"Stephen Hawking"
],
"Isaac Newton",
1
);
questions[61] = Question(
"What is the largest bird in the world?",
["Ostrich", "Emu", "Albatross", "Condor"],
"Ostrich",
1
);
questions[62] = Question(
"Who wrote 'Pride and Prejudice'?",
[
"Jane Austen",
"Charlotte Bronte",
"Emily Dickinson",
"Virginia Woolf"
],
"Jane Austen",
1
);
questions[63] = Question(
"What is the chemical symbol for gold?",
["Au", "Ag", "Pt", "Pb"],
"Au",
1
);
// Add more questions similarly...
}
function register() external {
require(!isParticipant[msg.sender], "Already registered");
isParticipant[msg.sender] = true;
}
function getCurrentQuestion()
external
view
returns (string memory question, string[4] memory choices)
{
require(currentQuestionIndex < MAX_QUESTIONS, "No question available");
Question storage currentQuestion = questions[currentQuestionIndex];
return (currentQuestion.question, currentQuestion.choices);
}
function answerQuestion(string memory _choice) external {
require(isParticipant[msg.sender], "Not registered");
require(bytes(_choice).length > 0, "Invalid choice");
string memory correctChoice = questions[currentQuestionIndex]
.correctChoice;
// Compare the user's choice with the correct choice
require(compareStrings(_choice, correctChoice), "Incorrect answer");
// Update last played timestamp
lastPlayedTimestamp[msg.sender] = block.timestamp;
// Move to the next question or end the game
if (currentQuestionIndex < MAX_QUESTIONS - 1) {
currentQuestionIndex++;
} else {
endGame();
}
}
function useLifeline(uint256 lifeline) external {
require(isParticipant[msg.sender], "Not registered");
require(lifeline >= 0 && lifeline < 3, "Invalid lifeline");
require(
token.balanceOf(msg.sender) >= LIFELINE_FEE,
"Insufficient tokens"
);
// Deduct lifeline cost
token.transferFrom(msg.sender, address(this), LIFELINE_FEE);
// Implement lifeline functionality based on lifeline type
if (lifeline == 0) {
// Implement 50/50 lifeline
// Randomly select two incorrect choices to eliminate
uint256[2] memory choicesToRemove;
uint256 numRemoved = 0;
for (uint256 i = 0; i < 4; i++) {
if (
!compareStrings(
questions[currentQuestionIndex].choices[i],
questions[currentQuestionIndex].correctChoice
) && numRemoved < 2
) {
choicesToRemove[numRemoved] = i;
numRemoved++;
}
}
emit LifelineUsed(msg.sender, "50/50");
} else if (lifeline == 1) {
// Implement "Ask the Audience" lifeline
// For simplicity, we assume 70% correct audience answer
uint256 correctAnswerPercentage = 70;
uint256 correctChoiceIndex = findChoiceIndex(
questions[currentQuestionIndex].correctChoice
);
uint256 audienceChoice = correctAnswerPercentage > 50
? correctChoiceIndex
: (correctChoiceIndex + 1) % 4; // Assuming 70% audience picks the correct answer
emit LifelineUsed(msg.sender, "Ask the Audience");
// Use audienceChoice here
audienceChoice;
} else if (lifeline == 2) {
// Implement "Phone a Friend" lifeline
// For simplicity, we assume the friend knows the answer with 90% probability
uint256 correctAnswerProbability = 90;
uint256 correctChoiceIndex = findChoiceIndex(
questions[currentQuestionIndex].correctChoice
);
uint256 friendChoice = correctAnswerProbability > 50
? correctChoiceIndex
: (correctChoiceIndex + 1) % 4; // Assuming 90% probability of friend knowing the answer
emit LifelineUsed(msg.sender, "Phone a Friend");
// Use friendChoice here
friendChoice;
}
}
function endGame() private {
// Calculate total prize pool
totalPrizePool = token.balanceOf(address(this));
// Determine winners and distribute prizes
for (uint256 i = 0; i < MAX_QUESTIONS; i++) {
address winner = getWinner(i);
if (winner != address(0)) {
uint256 prize = totalPrizePool.div(MAX_QUESTIONS);
token.transfer(winner, prize);
emit PrizeWon(winner, prize);
leaderboard.push(winner);
}
}
// Reset game state
currentQuestionIndex = 0;
totalPrizePool = 0;
// Emit event
emit GameEnded();
}
function getWinner(
uint256 /* questionIndex */
) private view returns (address) {
uint256 lastQuestionIndex = MAX_QUESTIONS - 1;
if (lastPlayedTimestamp[msg.sender] >= lastQuestionIndex) {
return msg.sender;
} else {
return address(0);
}
}
function findChoiceIndex(string memory _choice)
private
view
returns (uint256)
{
for (uint256 i = 0; i < 4; i++) {
if (
compareStrings(
_choice,
questions[currentQuestionIndex].choices[i]
)
) {
return i;
}
}
revert("Choice not found");
}
function compareStrings(string memory a, string memory b)
internal
pure
returns (bool)
{
return
(bytes(a).length == bytes(b).length) &&
(keccak256(bytes(a)) == keccak256(bytes(b)));
}
}
Raw
MilliToken.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Pausable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
contract MiliCoin is ERC20, ERC20Burnable, ERC20Pausable, Ownable {
constructor() ERC20("MiliCoin", "MC") Ownable(msg.sender) {
_mint(msg.sender, 1000000 * 10**decimals());
}
function _update(address from, address to, uint256 value) internal virtual override(ERC20, ERC20Pausable) {
super._update(from, to, value);
}
function mint(address account, uint256 amount) external onlyOwner {
_mint(account, amount);
}
}
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