How to Build an Online Multiplayer Game with Scala 3, ScalaJS, and Kafka

Description

Attendees will develop a streaming and scalable system from scratch. The workshop will cover the modeling and development of a streaming application using Scala 3 and technologies like fs2, Kafka, and ScalaJS.

Attendees will build a multiplayer web game with ScalaJS, capable of reacting to real-time Kafka events.

The objectives for those attending this workshop should be:

• Gain experience in managing data streams
• Learn basic concepts of event-sourcing
• Deepen knowledge about functional domain modeling with the tools that Scala 3 offers
• Learn the basics of using asynchronous message systems.
• Understand how ScalaJS works and how to integrate 3rd party JS libraries.
• Build end-to-end reactive systems through hands-on experience.
• Have fun!

Xebia Functional is providing this workshop, which means that at least 2 XF representatives will support the attendees with the following:

• Introduction talk
• Requirements document to build the system
• Continuing support to answer questions and solve potential blocks.
• Day 1 recap talk
• Demos and examples

Prerequisites

This is an intermediate-level course. Participants should have a basic knowledge of Scala 3 syntax, some notion of messaging systems, basic knowledge of docker, and SBT experience.

Content

• Introduction
• Project presentation and requirements
• Infrastructure provisioning
• Server Project:
  • Functional Domain Modeling
  • Streaming framework and Kafka consumers/producers
  • Server lobby business logic
• Day 1 conclusion
• Client Project:
  • ScalaJS setup: JS framework for DOM manipulation and UX
  • WebSocket setup
  • Async communication with the server
  • Game business logic
  • UI improvements
• Demo