Building a Rock-Paper-Scissors Simulation with JavaScript: Animation, Logic, and Persistence

I recently developed a project that simulates the classic game of Rock, Paper, Scissors, but with a twist. Instead of two players, entities (rock, paper, and scissors) are automatically generated and moved randomly within an arena until only one type r…


This content originally appeared on DEV Community and was authored by Luis Alejandro Solano

I recently developed a project that simulates the classic game of Rock, Paper, Scissors, but with a twist. Instead of two players, entities (rock, paper, and scissors) are automatically generated and moved randomly within an arena until only one type remains. Here's the repository: https://github.com/alejandrosnk/Cachipun-Automatic.

To make it even more engaging, I added a betting system where users can place virtual bets on the eventual winner. The system uses localStorage to retain points between sessions, providing a game-like experience and demonstrating basic web development concepts.

🔑 What this project demonstrates

  • DOM Manipulation: Dynamically managing entity creation, movement, and deletion.
  • Collision Detection: Enforcing Rock, Paper, Scissors rules when entities collide.
  • Persistence: Use of localStorage to manage points and bets. - Simulation flow: From initialization → movement → battles → winner determination.
  • User interaction: Betting controls, speed settings, and modal dialogs.

🛠️ Tech stack

  • HTML5 for the structure
  • CSS3 for layout and animations
  • Basic JavaScript for logic, events, and the simulation loop

🚀 How to run it

  1. Clone the repository.
  2. Open index.html in your browser.
  3. Start the simulation, adjust the speed, and place your bets.

⚡ Future Improvements

  • Add simulation history
  • More advanced entity movement
  • Multiplayer betting system
  • Backend integration for user profiles

👉 This project was a fun way to reinforce concepts of JavaScript animations, game logic, and client-side persistence.

đź’¬ I'd love community feedback on how to take this further. What feature would you add next?


This content originally appeared on DEV Community and was authored by Luis Alejandro Solano


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Luis Alejandro Solano | Sciencx (2025-09-23T17:57:42+00:00) Building a Rock-Paper-Scissors Simulation with JavaScript: Animation, Logic, and Persistence. Retrieved from https://www.scien.cx/2025/09/23/building-a-rock-paper-scissors-simulation-with-javascript-animation-logic-and-persistence/

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