Rock-Paper-Scissors Smart Contract

This smart contract implements a secure Rock-Paper-Scissors game using Reach and is ready to be deployed on the main network.

• A decentralized application (dapp) is an application built on a decentralized network that combines a smart contract and a frontend user interface.
• Smart contracts are digital contracts stored on a blockchain that is automatically executed when predetermined terms and conditions are met

Specification

• Alice and Bob play the classic rock paper scissors game.
• Alice will first propose a wager of certain amount before the game starts.
• If bob will accept the wager then Alice will turn their first move.
• On Bob's turn, if he doesn't play in a certain period then the game will terminate and both will get back their wager back.
• In bob's turn Alice's hand is unknown to bob.
• After bob will turn their move, the result will be calculated and the winner will get the total wager amount.
• If after bob's turn Alice won't reveal her hand then she will lose(because she has access to bob's hand, so she should play).
• In a draw situation, the wager will be the same and Alice will start the game with her move first.

Features

• Simple CLI game.
• Implemented Bets and Wagers.
• Preventing Hacks through Automatic Verifications.
• Adding Timeouts and Requiring Participation to Enforce Payout
• Adding User Interaction and a User Interface in my DApp.
• Only works on test-net for now.

Demo

Here I have created 2 instances of player, in the left terminal left is playing and the right one is for Bob.

Tech Stacks

• Reach
• Algorand

Installation

First, you need to create a proper working environment to run this project. For that, you can find a reference here. And then for installation follow the guidelines given here. After the complete setup, you can follow the steps given below.

Clone the project

  git clone https://github.com/Pranav108/smart-rock-paper-scissors

Move to the project folder

  cd smart-rock-paper-scissors

Run the program

./reach run

ToDo

• Reduce Alice's cost to Run and play the game, because she is responsible for more moves than bob.
• Make it more efficient by optimizing the number of communications.

Authors

• @Pranav108