Cupid Matchmaker: Building a Robust Matchmaking System for Unity Mirror

 

Cupid Matchmaker: Building a Robust Matchmaking System for Unity Mirror

https://github.com/Sewmina7/CupidServer

https://github.com/Sewmina7/CupidUnity

Introduction

Creating a seamless multiplayer experience in Unity requires a well-designed matchmaking system. In my project, Cupid Matchmaker, I tackled the challenge of efficiently starting dedicated servers on-demand for Mirror networked games. This approach enhances security compared to traditional relay-based systems used in many Unity games.

Inspiration

The inspiration for Cupid Matchmaker stemmed from the lack of a proper solution for launching dedicated servers in Unity Mirror. Existing methods often relied on relay networks, compromising security due to client-side authority. Dedicated servers offer a more secure environment by handling game logic on the server, making it harder to exploit.

Challenges Overcome

• Complexity vs. Performance: Dedicated servers introduce complexity compared to relay systems. However, I mitigated this by leveraging NodeJS for a lightweight matchmaking server with a public REST API. This minimized boilerplate code and facilitated communication between the game client and the matchmaking program.

• Dynamic Port Management: Ensuring free ports for each server instance was crucial. I implemented a configurable port range within the program, allowing users to specify a safe range for new matches. The program validates port availability before assigning it to a new server instance.

• Server Instance Lifespan: To prevent server overload, I introduced a "time-to-live" (TTL) concept. The matchmaking program tracks started server instances and their corresponding matches. If a match exceeds the TTL without ending, the program forcefully terminates the server instance, freeing up resources.

Implementation Highlights

• NodeJS-based Matchmaking Server: The program efficiently manages matchmaking logic and server creation using NodeJS. The REST API enables smooth communication between the game client and the matchmaking program.

• Dynamic Port Allocation: The program intelligently assigns unused ports within a user-defined range for each new server instance, ensuring smooth operation.

• TTL for Server Instances: The TTL mechanism prevents server overload by automatically terminating inactive game server instances, maintaining optimal performance.

Outcomes and Learnings

Cupid Matchmaker demonstrates my ability to:

• Design and develop a robust matchmaking system for Unity Mirror networking.
• Address complex challenges like dynamic port management and server instance lifecycles.
• Leverage NodeJS for efficient server-side development.
• Effectively document the development process through a clear and engaging devlog.

Looking Ahead

I'm constantly seeking opportunities to improve Cupid Matchmaker. Future iterations might include:

• User Interface Integration: Exploring the possibility of a user interface for easier setup and monitoring.
• Advanced Matchmaking Logic: Implementing algorithms for more sophisticated matchmaking criteria, enhancing the player experience.

Conclusion

Cupid Matchmaker showcases my passion for game development and my ability to tackle technical challenges. I'm confident that my skills and experience would be a valuable asset to your team.