Revert "Physics (#3452)"

This reverts commit 3e64fd56a1.

Content.Client/GameObjects/EntitySystems/MoverSystem.cs

@@ -0,0 +1,43 @@
+#nullable enable
+using Content.Shared.GameObjects.Components.Movement;
+using Content.Shared.GameObjects.EntitySystems;
+using JetBrains.Annotations;
+using Robust.Client.Physics;
+using Robust.Client.Player;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Content.Client.GameObjects.EntitySystems
+{
+    [UsedImplicitly]
+    public class MoverSystem : SharedMoverSystem
+    {
+        [Dependency] private readonly IPlayerManager _playerManager = default!;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            UpdatesBefore.Add(typeof(PhysicsSystem));
+        }
+
+        public override void FrameUpdate(float frameTime)
+        {
+            var playerEnt = _playerManager.LocalPlayer?.ControlledEntity;
+
+            if (playerEnt == null || !playerEnt.TryGetComponent(out IMoverComponent? mover) || !playerEnt.TryGetComponent(out IPhysicsComponent? physics))
+            {
+                return;
+            }
+
+            physics.Predict = true;
+
+            UpdateKinematics(playerEnt.Transform, mover, physics);
+        }
+
+        public override void Update(float frameTime)
+        {
+            FrameUpdate(frameTime);
+        }
+    }
+}

Content.Client/GameObjects/EntitySystems/SubFloorHideSystem.cs

@@ -85,22 +85,13 @@ namespace Content.Client.GameObjects.EntitySystems
             foreach (var snapGridComponent in grid.GetSnapGridCell(position, SnapGridOffset.Center))
             {
                 var entity = snapGridComponent.Owner;
-                if (!entity.TryGetComponent(out SubFloorHideComponent subFloorComponent))
+                if (!entity.TryGetComponent(out SubFloorHideComponent subFloorComponent) ||
+                    !entity.TryGetComponent(out ISpriteComponent spriteComponent))
                 {
                     continue;
                 }
 
-                var enabled = EnableAll || !subFloorComponent.Running || tileDef.IsSubFloor;
-
-                if (entity.TryGetComponent(out ISpriteComponent spriteComponent))
-                {
-                    spriteComponent.Visible = enabled;
-                }
-
-                if (entity.TryGetComponent(out PhysicsComponent physicsComponent))
-                {
-                    physicsComponent.CanCollide = enabled;
-                }
+                spriteComponent.Visible = EnableAll || !subFloorComponent.Running || tileDef.IsSubFloor;
             }
         }
     }