Game syncing issues

[martinfiers]

Describe the bug

Hello, I tried to set up a server. I used essential plugin v11.5, together with the latest build of Mindustry. I found that there's a lot of synchronization issues and problems (not being able to build stuff, my plane jumping around). Has anyone encountered these problems before? When I run a normal server without plugins and using an older java VM, (version 12 - which is easier to obtain on most Linux systems btw), things are OK. Has anyone encountered this before?

Is there a walkthrough - step-by-step on how to set up a server using the essential plugin? Which JVM do you recommend using? (openjdk doesn't have a version > 12 on my ubuntu). Linux/Windows, ...

Expected behavior

No sync'ing issues.

Screenshots

I can add more details if that is useful to debug the problem.

Server (please complete the following information):

• Server runs on Ubuntu 18.04. Using java jdk-15.0.1+9-jre
• Client runs latest Mindustry V6.

Additional context Add any other context about the problem here.

[Kieaer]

Ah... yes. Essentials has structural defects. Porting the ones from version 5.0 to 6.0 caused many performance issues.

Among the functions of plugins, synchronization errors occur when working in a separate thread, so many functions are designed to work only on the main thread. Because in Mindustry 4.x ~ 5.x versions, it was difficult to expect synchronization between threads because all operations were operated as single thread.

However, in Mindustry 6.0, a new AsyncThread was created to solve this problem. Therefore, the game performance has been greatly improved, but the plugin is structurally designed for Mindustry 4.x ~ 5.x, so it has a very big impact on performance.

As of now, the workaround is to recreate the plugin from scratch.

KR-Plugin repository link This plugin is intended to be applied to my server, but there's also a solution to the structural defects of the Essentials plugin.

It's still in its infancy! It may take more than 1 month.

[martinfiers]

Hello,

Thank you very much for your clear explanation! I'm happy to test out once you have something working.

[Kieaer]

I tried to improve performance using a mutli-thread, but it caused many internal errors. This problem is that Mindustry's game logic works as a single thread. All the buildings, effect, bullet, units calculate worked only one thread.

So the solution is just to use cpu with high single-core performance. I tested it on Ryzen 3800x and 4350G, and there were a lot of lags based on 400x400 map size for 10 users without plugins.

[Kieaer]

I found a way to make only some features work as single threaded.

[Kieaer]

Use Essentials 11.8