Fixed rotation check for pulling (#8845)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Pulling/Components/PullableComponent.cs

@@ -11,8 +11,6 @@ namespace Content.Shared.Pulling.Components
     [RegisterComponent]
     public sealed class SharedPullableComponent : Component
     {
-        public float? MaxDistance => PullJoint?.MaxLength;
-
         /// <summary>
         /// The current entity pulling this component.
         /// SharedPullingStateManagementSystem should be writing this. This means definitely not you.
@@ -29,6 +27,20 @@ namespace Content.Shared.Pulling.Components
         [Access(typeof(SharedPullingStateManagementSystem), Other = AccessPermissions.ReadExecute)] // FIXME Friends
         public EntityCoordinates? MovingTo { get; set; }
 
+        /// <summary>
+        /// If the physics component has FixedRotation should we keep it upon being pulled
+        /// </summary>
+        [Access(typeof(SharedPullingSystem), Other = AccessPermissions.ReadExecute)]
+        [ViewVariables(VVAccess.ReadWrite), DataField("fixedRotation")]
+        public bool FixedRotationOnPull { get; set; }
+
+        /// <summary>
+        /// What the pullable's fixedrotation was set to before being pulled.
+        /// </summary>
+        [Access(typeof(SharedPullingSystem), Other = AccessPermissions.ReadExecute)]
+        [ViewVariables]
+        public bool PrevFixedRotation;
+
         public override ComponentState GetComponentState()
         {
             return new PullableComponentState(Puller);

Content.Shared/Pulling/Systems/SharedPullingSystem.Actions.cs

@@ -85,6 +85,13 @@ namespace Content.Shared.Pulling
 
             if (msg.Cancelled) return false;
 
+            // Stop pulling confirmed!
+
+            if (TryComp<PhysicsComponent>(pullable.Owner, out var pullablePhysics))
+            {
+                pullablePhysics.FixedRotation = pullable.PrevFixedRotation;
+            }
+
             _pullSm.ForceRelationship(null, pullable);
             return true;
         }
@@ -172,11 +179,11 @@ namespace Content.Shared.Pulling
             RaiseLocalEvent(pullable.Owner, pullAttempt);
 
             if (pullAttempt.Cancelled)
-            {
                 return false;
-            }
 
             _pullSm.ForceRelationship(puller, pullable);
+            pullable.PrevFixedRotation = pullablePhysics.FixedRotation;
+            pullablePhysics.FixedRotation = pullable.FixedRotationOnPull;
             return true;
         }