Turn brain behavior into a component/system (#5281)

Content.Shared/Body/Events/MechanismBodyEvents.cs

@@ -0,0 +1,90 @@
+using Content.Shared.Body.Components;
+using Robust.Shared.GameObjects;
+
+namespace Content.Shared.Body.Events
+{
+    // All of these events are raised on a mechanism entity when added/removed to a body in different
+    // ways.
+
+    /// <summary>
+    ///     Raised on a mechanism when it is added to a body.
+    /// </summary>
+    public class AddedToBodyEvent : EntityEventArgs
+    {
+        public SharedBodyComponent Body;
+
+        public AddedToBodyEvent(SharedBodyComponent body)
+        {
+            Body = body;
+        }
+    }
+
+    /// <summary>
+    ///     Raised on a mechanism when it is added to a body part.
+    /// </summary>
+    public class AddedToPartEvent : EntityEventArgs
+    {
+        public SharedBodyPartComponent Part;
+
+        public AddedToPartEvent(SharedBodyPartComponent part)
+        {
+            Part = part;
+        }
+    }
+
+    /// <summary>
+    ///     Raised on a mechanism when it is added to a body part within a body.
+    /// </summary>
+    public class AddedToPartInBodyEvent : EntityEventArgs
+    {
+        public SharedBodyComponent Body;
+        public SharedBodyPartComponent Part;
+
+        public AddedToPartInBodyEvent(SharedBodyComponent body, SharedBodyPartComponent part)
+        {
+            Body = body;
+            Part = part;
+        }
+    }
+
+    /// <summary>
+    ///     Raised on a mechanism when it is removed from a body.
+    /// </summary>
+    public class RemovedFromBodyEvent : EntityEventArgs
+    {
+        public SharedBodyComponent Old;
+
+        public RemovedFromBodyEvent(SharedBodyComponent old)
+        {
+            Old = old;
+        }
+    }
+
+    /// <summary>
+    ///     Raised on a mechanism when it is removed from a body part.
+    /// </summary>
+    public class RemovedFromPartEvent : EntityEventArgs
+    {
+        public SharedBodyPartComponent Old;
+
+        public RemovedFromPartEvent(SharedBodyPartComponent old)
+        {
+            Old = old;
+        }
+    }
+
+    /// <summary>
+    ///     Raised on a mechanism when it is removed from a body part within a body.
+    /// </summary>
+    public class RemovedFromPartInBodyEvent : EntityEventArgs
+    {
+        public SharedBodyComponent OldBody;
+        public SharedBodyPartComponent OldPart;
+
+        public RemovedFromPartInBodyEvent(SharedBodyComponent oldBody, SharedBodyPartComponent oldPart)
+        {
+            OldBody = oldBody;
+            OldPart = oldPart;
+        }
+    }
+}