Number Guessing Game Smart Contract

This is a simple Number Guessing Game smart contract written in Solidity. Players can participate in the game by guessing a randomly generated number between 1 and 100. If they guess the correct number, they win a prize (1 Ether). This contract is deployed on EduChain.

Deployed Contract Address

The smart contract is deployed on EduChain at the following address:

0x0a58eE83Ad4b12c65a031C350086545a93c04122

Features of the Guessing Game

• Start Game: Any user can start the game by sending Ether to the contract. The game is initiated and the random number is generated.

• Guessing: Players can make guesses by calling the guessNumber() function. The guess must be between 1 and 100.

• Prize Distribution: If a player's guess matches the randomly generated number, they win the prize (1 Ether) and the game is reset.

• Prize Pool: Users can view the current prize pool with the getPrizePool() function.

• Winner Info: The winner’s address can be accessed using the getWinner() function.

How to Interact with the Contract

1. Start the Game:

   • Call the startGame() function and send Ether to initiate the game.

2. Make a Guess:

   • Call the guessNumber() function with a number between 1 and 100 as the guess. The correct guess wins the prize.

3. View Current Status:

   • Use the getPrizePool() function to see the current prize pool.

   • Use the getWinner() function to see who the last winner was.

Smart Contract Functions

• startGame(): Starts the game and accepts Ether to fund the prize pool.

• guessNumber(uint256 _guess): Allows a user to guess the number. If correct, they win the prize.

• getPrizePool(): Returns the current prize pool balance.

• getWinner(): Returns the address of the last winner.

• receive(): A fallback function to handle unexpected Ether transactions.

Example of Interacting with the Contract

1. Start a new game (send 1 Ether or more):

   • Call startGame() from your wallet or a DApp interface (e.g., Remix, Ethers.js).

2. Make a guess (between 1 and 100):

   • Call guessNumber() with your chosen number.

3. Check the prize pool and winner:

   • Call getPrizePool() to check how much is in the prize pool.

   • Call getWinner() to see who won the last game.

Requirements

• Solidity Version: 0.8.0 or higher.

• Ethereum-based Network: This contract is deployed on EduChain.

License

This project is open-source and available under the MIT License.

Disclaimer

Please note that this contract uses basic pseudo-random number generation based on block.timestamp and block.difficulty. This is not suitable for production use or high-stakes games. For more secure random number generation, consider using services like Chainlink VRF (Verifiable Random Function).