PreventCollision with strap component while buckled to it (#2694)

* AvoidCollision if collided entity is the one that the character is buckled to

* Attempt to PreventCollision after the player is unbuckled but still colliding with StrapComponent

* Moved PreventCollide to the Shared script.

* Add WakeBody to keep updating the physics collision while being on a collidable strap component.

* Addressed some of metalgearsloth's suggestions:
- Made EntityBuckledTo,IsOnStrapEntityThisFrame and DontCollide not virtual
-Made EntityBuckledTo nullable
-Don't call update on Paused BuckleComponents
-Removed EntityBuckledTo variable declaration in BuckleComponent because it's not needed anymore
-Call TryUnbuckle if (!IsOnStrapEntityThisFrame && DontCollide) to set BuckledTo entity to null.

* Formatting

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

* Formatting

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

* Formatting again :P

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

* Formatting

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

* Formatting

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

* Renamed variable EntityBuckledTo to LastEntityBuckledTo

* As per DrSmugLeaf suggestion: Added [ComponentDependency] to the Body variable.

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

Content.Server/GameObjects/Components/Buckle/BuckleComponent.cs

@@ -27,6 +27,7 @@ using Robust.Shared.Interfaces.Timing;
 using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Maths;
+using Robust.Shared.Physics;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
 
@@ -49,7 +50,6 @@ namespace Content.Server.GameObjects.Components.Buckle
         /// </summary>
         [ViewVariables]
         private float _range;
-
         /// <summary>
         ///     The amount of time that must pass for this entity to
         ///     be able to unbuckle after recently buckling.
@@ -69,6 +69,7 @@ namespace Content.Server.GameObjects.Components.Buckle
         public Vector2 BuckleOffset { get; private set; }
 
         private StrapComponent? _buckledTo;
+        
 
         /// <summary>
         ///     The strap that this component is buckled to.
@@ -266,6 +267,8 @@ namespace Content.Server.GameObjects.Components.Buckle
             AppearanceComponent?.SetData(BuckleVisuals.Buckled, true);
 
             BuckledTo = strap;
+            LastEntityBuckledTo = BuckledTo.Owner.Uid;
+            DontCollide = true;
 
             ReAttach(strap);
             UpdateBuckleStatus();
@@ -418,8 +421,9 @@ namespace Content.Server.GameObjects.Components.Buckle
             {
                 drawDepth = BuckledTo.SpriteComponent.DrawDepth - 1;
             }
+            
 
-            return new BuckleComponentState(Buckled, drawDepth);
+            return new BuckleComponentState(Buckled, drawDepth, LastEntityBuckledTo, DontCollide);
         }
 
         bool IInteractHand.InteractHand(InteractHandEventArgs eventArgs)
@@ -427,6 +431,24 @@ namespace Content.Server.GameObjects.Components.Buckle
             return TryUnbuckle(eventArgs.User);
         }
 
+
+        public void Update()
+        {
+            if (!DontCollide || Body == null)
+                return;
+
+            Body.WakeBody();
+
+            if (!IsOnStrapEntityThisFrame && DontCollide)
+            {
+                DontCollide = false;
+                TryUnbuckle(Owner);
+                Dirty();
+            }
+
+            IsOnStrapEntityThisFrame = false;
+        }
+
         /// <summary>
         ///     Allows the unbuckling of the owning entity through a verb if
         ///     anyone right clicks them.