CLre/HelloModdingWorld/MyPlugin.cs

using System.Reflection;

using IllusionPlugin;
//using GamecraftModdingAPI;

namespace HelloModdingWorld
{
	public class MyPlugin : IEnhancedPlugin // the Illusion Plugin Architecture (IPA) will ignore classes that don't implement IPlugin'
	{
		public override string Name { get; } = Assembly.GetExecutingAssembly().GetName().Name; // HelloModdingWorld by default
		// To change the name, change the project's name

		public override string Version { get; } = Assembly.GetExecutingAssembly().GetName().Version.ToString(); // 0.0.1 by default
        // To change the version, change <Version>0.0.1</Version> in HelloModdingWorld.csproj

        // called when Gamecraft shuts down
		public override void OnApplicationQuit()
		{
            // Shutdown this mod
			GamecraftModdingAPI.Utility.Logging.LogDebug($"{Name} has shutdown");

            // Shutdown the Gamecraft modding API last
			GamecraftModdingAPI.Main.Shutdown();
		}

        // called when Gamecraft starts up
		public override void OnApplicationStart()
		{
            // Initialize the Gamecraft modding API first
			GamecraftModdingAPI.Main.Init();
			// check out the modding API docs here: https://mod.exmods.org/

			// Initialize this mod
            // create HelloWorld command
            // this writes "Hello modding world!" when you execute it in Gamecraft's console
            // (use the forward-slash key '/' to open the console in Gamecraft when in a game)
			GamecraftModdingAPI.Commands.CommandBuilder.Builder()
						  .Name("HelloWorld") // command name (used to invoke it in the console)
						  .Description("Says Hello modding world!") // command description (displayed in help and hint toolbar)
						  .Action(() => { GamecraftModdingAPI.Utility.Logging.CommandLog("Hello modding world!"); })
						  .Build(); // construct and automatically register the command so the modding API knows about it 

			GamecraftModdingAPI.Utility.Logging.MetaLog($"{Name} has started up");
		}

        // unused methods

		public override void OnFixedUpdate() { } // called once per physics update

		public override void OnUpdate() { } // called once per rendered frame (frame update)
	}
}