Make ghost component ECS (#4159)

* Make ghost component ECS

* Remove players and locations properties from ghost component

* Address reviews

* One more doc

* Fix client ghost component state method error

Content.Client/Ghost/GhostComponent.cs

@@ -1,143 +1,30 @@
-using System.Collections.Generic;
-using Content.Client.Chat.Managers;
-using Content.Client.HUD;
 using Content.Shared.Ghost;
-using Robust.Client.GameObjects;
 using Robust.Client.Player;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
-using Robust.Shared.Network;
-using Robust.Shared.Players;
-using Robust.Shared.ViewVariables;
 
 namespace Content.Client.Ghost
 {
     [RegisterComponent]
     public class GhostComponent : SharedGhostComponent
     {
-        [Dependency] private readonly IGameHud _gameHud = default!;
         [Dependency] private readonly IPlayerManager _playerManager = default!;
-        [Dependency] private readonly IComponentManager _componentManager = default!;
-        [Dependency] private readonly IChatManager _chatManager = default!;
 
-        public List<string> WarpNames = new();
-        public Dictionary<EntityUid,string> PlayerNames = new();
-
-        private GhostGui? _gui ;
-
-        [ViewVariables(VVAccess.ReadOnly)] public bool CanReturnToBody { get; private set; } = true;
-
-        private bool _isAttached;
-
-        public override void OnRemove()
-        {
-            base.OnRemove();
-
-            _gui?.Dispose();
-
-            // PlayerDetachedMsg might not fire due to deletion order so...
-            if (_isAttached)
-            {
-                SetGhostVisibility(false);
-            }
-        }
-
-        private void SetGhostVisibility(bool visibility)
-        {
-            foreach (var ghost in _componentManager.GetAllComponents(typeof(GhostComponent), true))
-            {
-                if (ghost.Owner.TryGetComponent(out SpriteComponent? component))
-                {
-                    component.Visible = visibility;
-                }
-            }
-        }
-
-        public override void Initialize()
-        {
-            base.Initialize();
-
-            if (Owner.TryGetComponent(out SpriteComponent? component))
-            {
-                component.Visible =
-                    _playerManager.LocalPlayer?.ControlledEntity?.HasComponent<GhostComponent>() ?? false;
-            }
-        }
-
-        public override void HandleMessage(ComponentMessage message, IComponent? component)
-        {
-            base.HandleMessage(message, component);
-
-            switch (message)
-            {
-                case PlayerAttachedMsg _:
-                    if (_gui == null)
-                    {
-                        _gui = new GhostGui(this);
-                    }
-                    else
-                    {
-                        _gui.Orphan();
-                    }
-
-                    _gameHud.HandsContainer.AddChild(_gui);
-                    SetGhostVisibility(true);
-                    _isAttached = true;
-
-                    break;
-
-                case PlayerDetachedMsg _:
-                    _gui!.Parent?.RemoveChild(_gui);
-                    SetGhostVisibility(false);
-                    _isAttached = false;
-                    break;
-            }
-        }
-
-        public void SendReturnToBodyMessage() => SendNetworkMessage(new ReturnToBodyComponentMessage());
-
-        public void SendGhostWarpRequestMessage(string warpName) => SendNetworkMessage(new GhostWarpToLocationRequestMessage(warpName));
-
-        public void SendGhostWarpRequestMessage(EntityUid target) => SendNetworkMessage(new GhostWarpToTargetRequestMessage(target));
-
-        public void GhostRequestWarpPoint() => SendNetworkMessage(new GhostRequestWarpPointData());
-
-        public void GhostRequestPlayerNames() => SendNetworkMessage(new GhostRequestPlayerNameData());
+        public GhostGui? Gui { get; set; }
+        public bool IsAttached { get; set; }
 
         public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
         {
             base.HandleComponentState(curState, nextState);
 
-            if (curState is not GhostComponentState state) return;
-
-            CanReturnToBody = state.CanReturnToBody;
-
-            if (Owner == _playerManager.LocalPlayer!.ControlledEntity)
+            if (curState is not GhostComponentState)
             {
-                _gui?.Update();
+                return;
             }
-        }
 
-        public override void HandleNetworkMessage(ComponentMessage message, INetChannel netChannel, ICommonSession? session = null)
-        {
-            base.HandleNetworkMessage(message, netChannel, session);
-
-            switch (message)
+            if (Owner == _playerManager.LocalPlayer?.ControlledEntity)
             {
-                case GhostReplyWarpPointData data:
-                    WarpNames = new List<string>();
-                    foreach (var names in data.WarpName)
-                    {
-                        WarpNames.Add(names);
-                    }
-                    break;
-                case GhostReplyPlayerNameData data:
-                    PlayerNames = new Dictionary<EntityUid, string>();
-                    foreach (var (key, value) in data.PlayerNames)
-                    {
-                        PlayerNames.Add(key,value);
-                    }
-                    break;
+                Gui?.Update();
             }
         }
     }