entitysystemupdateorder debug command

Resources/Locale/en-US/toolshed-commands.ftl

@@ -161,3 +161,9 @@ command-description-EqualCommand =
     Performs an equality comparison, returning true if the inputs are equal.
 command-description-NotEqualCommand =
     Performs an equality comparison, returning true if the inputs are not equal.
+
+command-description-entitysystemupdateorder-tick =
+    Lists the tick update order of entity systems.
+
+command-description-entitysystemupdateorder-frame =
+    Lists the frame update order of entity systems.

Robust.Shared/GameObjects/EntitySystemManager.cs

@@ -393,6 +393,9 @@ namespace Robust.Shared.GameObjects
             return mFrameUpdate!.DeclaringType != typeof(EntitySystem);
         }
 
+        internal IEnumerable<Type> FrameUpdateOrder => _frameUpdateOrder.Select(c => c.GetType());
+        internal IEnumerable<Type> TickUpdateOrder => _updateOrder.Select(c => c.System.GetType());
+
         private struct UpdateReg
         {
             [ViewVariables] public IEntitySystem System;

Robust.Shared/GameObjects/EntitySystemUpdateOrderCommand.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using Robust.Shared.IoC;
+using Robust.Shared.Toolshed;
+
+namespace Robust.Shared.GameObjects;
+
+[ToolshedCommand]
+internal sealed class EntitySystemUpdateOrderCommand : ToolshedCommand
+{
+    [Dependency] private readonly IEntitySystemManager _entitySystemManager = default!;
+
+    [CommandImplementation("tick")]
+    public IEnumerable<Type> Tick()
+    {
+        var mgr = (EntitySystemManager)_entitySystemManager;
+
+        return mgr.TickUpdateOrder;
+    }
+
+    [CommandImplementation("frame")]
+    public IEnumerable<Type> Frame()
+    {
+        var mgr = (EntitySystemManager)_entitySystemManager;
+
+        return mgr.FrameUpdateOrder;
+    }
+}