Fix door saving/loading (#6506)

Content.Shared/Doors/Components/DoorComponent.cs

@@ -1,23 +1,19 @@
-using System;
-using System.Collections.Generic;
 using Content.Shared.Damage;
 using Content.Shared.Sound;
 using Content.Shared.Tools;
-using Robust.Shared.GameObjects;
 using Robust.Shared.GameStates;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization;
-using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
-using Robust.Shared.ViewVariables;
+using Robust.Shared.Timing;
 using DrawDepthTag = Robust.Shared.GameObjects.DrawDepth;
 
 namespace Content.Shared.Doors.Components;
 
 [NetworkedComponent]
 [RegisterComponent]
-public sealed class DoorComponent : Component
+public sealed class DoorComponent : Component, ISerializationHooks
 {
     /// <summary>
     /// The current state of the door -- whether it is open, closed, opening, or closing.
@@ -72,6 +68,7 @@ public sealed class DoorComponent : Component
     ///     Whether the door is currently partially closed or open. I.e., when the door is "closing" and is already opaque,
     ///     but not yet actually closed.
     /// </summary>
+    [DataField("partial")]
     public bool Partial;
     #endregion
 
@@ -142,9 +139,38 @@ public sealed class DoorComponent : Component
     /// <summary>
     /// List of EntityUids of entities we're currently crushing. Cleared in OnPartialOpen().
     /// </summary>
+    [DataField("currentlyCrushing")]
     public List<EntityUid> CurrentlyCrushing = new();
     #endregion
 
+    #region Serialization
+    /// <summary>
+    ///     Time until next state change. Because apparently <see cref="IGameTiming.CurTime"/> might not get saved/restored.
+    /// </summary>
+    [DataField("SecondsUntilStateChange")]
+    private float? _secondsUntilStateChange;
+
+    void ISerializationHooks.BeforeSerialization()
+    {
+        if (NextStateChange == null)
+        {
+            _secondsUntilStateChange = null;
+            return;
+        };
+        
+        var curTime = IoCManager.Resolve<IGameTiming>().CurTime;
+        _secondsUntilStateChange = (float) (NextStateChange.Value - curTime).TotalSeconds;
+    }
+
+    void ISerializationHooks.AfterDeserialization()
+    {
+        if (_secondsUntilStateChange == null || _secondsUntilStateChange.Value > 0)
+            return;
+
+        NextStateChange = IoCManager.Resolve<IGameTiming>().CurTime + TimeSpan.FromSeconds(_secondsUntilStateChange.Value);
+    }
+    #endregion
+
     [DataField("board", customTypeSerializer: typeof(PrototypeIdSerializer<EntityPrototype>))]
     public string? BoardPrototype;