Fix lasso buckle (#1246)

Co-authored-by: Pieter-Jan Briers <pieterjan.briers+git@gmail.com>

Content.Shared/GameObjects/Components/Mobs/SharedBuckleComponent.cs

@@ -1,13 +1,44 @@
 using System;
+using Content.Shared.GameObjects.EntitySystems;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 
 namespace Content.Shared.GameObjects.Components.Mobs
 {
-    public class SharedBuckleComponent : Component
+    public abstract class SharedBuckleComponent : Component, IActionBlocker, IEffectBlocker
     {
         public sealed override string Name => "Buckle";
 
+        public sealed override uint? NetID => ContentNetIDs.BUCKLE;
+
+        protected abstract bool Buckled { get; }
+
+        bool IActionBlocker.CanMove()
+        {
+            return !Buckled;
+        }
+
+        bool IActionBlocker.CanChangeDirection()
+        {
+            return !Buckled;
+        }
+
+        bool IEffectBlocker.CanFall()
+        {
+            return !Buckled;
+        }
+
+        [Serializable, NetSerializable]
+        protected sealed class BuckleComponentState : ComponentState
+        {
+            public BuckleComponentState(bool buckled) : base(ContentNetIDs.BUCKLE)
+            {
+                Buckled = buckled;
+            }
+
+            public bool Buckled { get; }
+        }
+
         [Serializable, NetSerializable]
         public enum BuckleVisuals
         {