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Space Engineers client, Torch and Dedicated Server plugin template.

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Space Engineers Plugin Template

Client only version of the template

Prerequisites

Create your plugin project

  1. Click on Use this template (top right corner on GitHub) and follow the wizard to create your repository
  2. Clone your repository to have a local working copy
  3. Run ReplaceGuidsAndRename.py, enter the name of your plugin project in CapitalizedWords format
  4. Edit Edit-and-run-before-opening-solution.bat to match your local paths, then run it
  5. Open the solution in Visual Studio or Rider
  6. Make a test build, it should deploy the resulting files to their respective target folders (see them in the build log)
  7. Test that the empty plugin can be enabled in Plugin Loader (client), Torch Server's UI and the Dedicated Server's UI
  8. Delete the ReplaceGuidsAndRename.py from the Solution Items folder of the solution (it is not needed anymore)
  9. Replace the contents of this file with the description of your plugin
  10. Follow the TODO comments in the source code
  11. Look into the source code of other plugins for examples on how to patch the game

You may find the source code of these plugins inspirational:

In case of questions please feel free to ask the SE plugin developer community on the Plugin Loader or the Torch Discord server in their relevant text channels. They also have dedicated channels for plugin ideas, should you look for a new one.

Good luck!

Remarks

Conditional compilation

  • DedicatedPlugin defines DEDICATED, TorchPlugin defines TORCH. You can use those names for conditional compilation by #if blocks in the Shared project. For example if you want your code to compile for client and dedicated server plugins, but not for the Torch plugin, then put it into a #if !TORCH ... #endif block.

Shared project

  • Put any code you can share between the plugin projects into the Shared project. Try to keep the redundancy at the minimum.

  • The DLLs required by your Shared code need to be added as a dependency to all the projects, even if some of the code is not used by one of the projects.

  • You can delete the projects you don't need. If you want only a single project, then move over what is in the Shared one, then you can delete Shared.

Torch plugin

  • For Torch plugins see also the official Torch Plugin Template, it has some additional information in its README.txt file.

  • If you don't need the config UI in Torch for your plugin, then remove the IWpfPlugin from the Plugin class and the xaml and xaml.cs files. Also remove the now unused GetControl method.

  • While you can use HarmonyLib for patching in Torch plugins, Torch has its own patching mechanism, which is more compatible with other plugins, but less convenient to use. If you want to remove Harmony from the Torch plugin, then search for USE_HARMONY in all files, which will show you where to make changes. Also remove Lib.Harmony from the TorchPlugin project's NuGet package dependencies. Please note then in this case you must also remove all uses of Harmony from your Torch plugin code.

How to prevent the potential crash after game updates

Please use the EnsureCode attribute on patch methods to safely skip loading the plugin with an error logged should the code in any of the methods patched would change as part of a game update. It is a good way to prevent blaming crashes on your plugin after game updates, so your plugin can remain safely enabled (but effectively disabled) until you have a chance to release an update for compatibility with the new game version. Please see the examples in the Shared/Patches folder on how to use this attribute.

The hexadecimal hash code is logged in case of a mismatch, so you can read them from the logs for any new method you patch, just leave the string initially empty in the EnsureCode attribute, then replace with the value from the error log line after you run your plugin with the patch for the first time.

On Proton (Linux) this check tends to cause issues, therefore there is a configuration flag to turn it OFF. Setting the SE_PLUGIN_DISABLE_METHOD_VERIFICATION environment variable to any value on the player's host also disables game code verification.

Debugging

  • Always use a debug build if you want to set breakpoints and see variable values.
  • A debug build defines DEBUG, so you can add conditional code in #if DEBUG blocks.
  • While debugging a specific target unload the other two. It prevents the IDE to be confused.
  • If breakpoints do not "stick" or do not work, then make sure that:
    • Other projects are unloaded, only the debugged one and Shared are loaded.
    • Debugger is attached to the running process.
    • You are debugging the code which is running (no code changes made since the build).
  • Transpiler patches will write a harmony.log.txt file to your Desktop while running Debug builds. Never release a debug build to your users, because that would litter their desktop as well.
  • To debug transpiler changes to the IL code it is most practical to generate the files of the method's IL code before and after the change made, so you can just diff them. Please see the transpiler example under the Shared/Patches folder for the details.

Troubleshooting

  • If the IDE looks confused, then restarting it and the debugged game usually works.
  • If the restart did not work, then try to delete caches used by your IDE and restart.
  • If your build cannot deploy (just runs in a loop), then something locks the DLL file.
  • Look for running game processes (maybe stuck running in the background) and kill them.

Release

  • Always make your final release from a RELEASE build. (More optimized, removes debug code.)
  • Always test your RELEASE build before publishing. Sometimes is behaves differently.
  • In case of client plugins the Plugin Loader compiles your code, watch out for differences.

Communication

  • In your documentation always include how players or server admins should report bugs.
  • Try to be reachable and respond on a timely manner over your communication channels.
  • Be open for constructive critics.

Abandoning your project

  • Always consider finding a new maintainer, ask around at least once.
  • If you ever abandon the project, then make it clear on its GitHub page.
  • Abandoned projects should be made hidden on PluginHub and Torch's plugin list.
  • Keep the code available on GitHub, so it can be forked and continued by others.

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