Gas Analyzer Improvement (#1631)

* -Click on the analyzer to get the gas at your pos, click on tile to get gas tehre
-Reduced the auto refresh time
-AutoRefresh ui

* Use a fixed position instead of a offset

* Review

Content.Server/GameObjects/Components/Atmos/GasAnalyzerComponent.cs

@@ -2,37 +2,39 @@
 using Content.Server.GameObjects.EntitySystems;
 using Content.Server.Interfaces;
 using Content.Server.Interfaces.GameObjects.Components.Items;
+using Content.Server.Utility;
 using Content.Shared.Atmos;
 using Content.Shared.GameObjects.Components;
 using Content.Shared.GameObjects.EntitySystems;
-using Content.Shared.Interfaces;
 using Content.Shared.Interfaces.GameObjects.Components;
-using Content.Shared.Utility;
 using Robust.Server.GameObjects.Components.UserInterface;
 using Robust.Server.Interfaces.GameObjects;
 using Robust.Server.Interfaces.Player;
 using Robust.Shared.GameObjects;
 using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.Map;
 using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Map;
-using Robust.Shared.Utility;
-using System;
+using Robust.Shared.Maths;
 using System.Collections.Generic;
 
 namespace Content.Server.GameObjects.Components.Atmos
 {
     [RegisterComponent]
-    public class GasAnalyzerComponent : SharedGasAnalyzerComponent, IAfterInteract, IDropped
+    public class GasAnalyzerComponent : SharedGasAnalyzerComponent, IAfterInteract, IDropped, IUse
     {
 #pragma warning disable 649
         [Dependency] private IServerNotifyManager _notifyManager = default!;
+        [Dependency] private IMapManager _mapManager = default!;
 #pragma warning restore 649
 
         private BoundUserInterface _userInterface = default!;
         private GasAnalyzerDanger _pressureDanger;
         private float _timeSinceSync;
-        private const float TimeBetweenSyncs = 10f;
+        private const float TimeBetweenSyncs = 2f;
+        private bool _checkPlayer = false; // Check at the player pos or at some other tile?
+        private GridCoordinates? _position; // The tile that we scanned
 
         public override void Initialize()
         {
@@ -49,9 +51,28 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         /// <summary>
         /// Call this from other components to open the gas analyzer UI.
+        /// Uses the player position.
         /// </summary>
+        /// <param name="session">The session to open the ui for</param>
         public void OpenInterface(IPlayerSession session)
         {
+            _checkPlayer = true;
+            _position = null;
+            _userInterface.Open(session);
+            UpdateUserInterface();
+            Resync();
+        }
+
+        /// <summary>
+        /// Call this from other components to open the gas analyzer UI.
+        /// Uses a given position.
+        /// </summary>
+        /// <param name="session">The session to open the ui for</param>
+        /// <param name="pos">The position to analyze the gas</param>
+        public void OpenInterface(IPlayerSession session, GridCoordinates pos)
+        {
+            _checkPlayer = false;
+            _position = pos;
             _userInterface.Open(session);
             UpdateUserInterface();
             Resync();
@@ -59,6 +80,7 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         public void CloseInterface(IPlayerSession session)
         {
+            _position = null;
             _userInterface.Close(session);
             Resync();
         }
@@ -69,6 +91,7 @@ namespace Content.Server.GameObjects.Components.Atmos
             if (_timeSinceSync > TimeBetweenSyncs)
             {
                 Resync();
+                UpdateUserInterface();
             }
         }
 
@@ -103,9 +126,35 @@ namespace Content.Server.GameObjects.Components.Atmos
         private void UpdateUserInterface()
         {
             string? error = null;
-            var gam = EntitySystem.Get<AtmosphereSystem>().GetGridAtmosphere(Owner.Transform.GridID);
 
-            var tile = gam?.GetTile(Owner.Transform.GridPosition).Air;
+            // Check if the player is still holding the gas analyzer => if not, don't update
+            foreach (var session in _userInterface.SubscribedSessions)
+            {
+                if (session.AttachedEntity == null)
+                    return;
+
+                if (!session.AttachedEntity.TryGetComponent(out IHandsComponent handsComponent))
+                    return;
+
+                var activeHandEntity = handsComponent?.GetActiveHand?.Owner;
+                if (activeHandEntity == null || !activeHandEntity.TryGetComponent(out GasAnalyzerComponent gasAnalyzer))
+                {
+                    return;
+                }
+            }
+
+            var pos = Owner.Transform.GridPosition;
+            if (!_checkPlayer && _position.HasValue)
+            {
+                // Check if position is out of range => don't update
+                if (!_position.Value.InRange(_mapManager, pos, SharedInteractionSystem.InteractionRange))
+                    return;
+                
+                pos = _position.Value;
+            }
+
+            var gam = EntitySystem.Get<AtmosphereSystem>().GetGridAtmosphere(pos.GridID);
+            var tile = gam?.GetTile(pos).Air;
             if (tile == null)
             {
                 error = "No Atmosphere!";
@@ -172,13 +221,21 @@ namespace Content.Server.GameObjects.Components.Atmos
 
         void IAfterInteract.AfterInteract(AfterInteractEventArgs eventArgs)
         {
+            if (!eventArgs.CanReach)
+            {
+                _notifyManager.PopupMessage(eventArgs.User, eventArgs.User, Loc.GetString("You can't reach there!"));
+                return;
+            }
+
             if (eventArgs.User.TryGetComponent(out IActorComponent actor))
             {
-                OpenInterface(actor.playerSession);
+                OpenInterface(actor.playerSession, eventArgs.ClickLocation);
                 //TODO: show other sprite when ui open?
             }
         }
 
+
+
         void IDropped.Dropped(DroppedEventArgs eventArgs)
         {
             if (eventArgs.User.TryGetComponent(out IActorComponent actor))
@@ -187,5 +244,16 @@ namespace Content.Server.GameObjects.Components.Atmos
                 //TODO: if other sprite is shown, change again
             }
         }
+
+        bool IUse.UseEntity(UseEntityEventArgs eventArgs)
+        {
+            if (eventArgs.User.TryGetComponent(out IActorComponent actor))
+            {
+                OpenInterface(actor.playerSession);
+                //TODO: show other sprite when ui open?
+                return true;
+            }
+            return false;
+        }
     }
 }