Add door welding (#1951)

* Add door welding

Surprised this wasn't in already.

* smug's feedback

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Server/GameObjects/Components/Doors/ServerDoorComponent.cs

@@ -2,15 +2,18 @@
 using System;
 using System.Linq;
 using System.Threading;
+using System.Threading.Tasks;
 using Content.Server.GameObjects.Components.Access;
 using Content.Server.GameObjects.Components.Atmos;
 using Content.Server.GameObjects.Components.GUI;
+using Content.Server.GameObjects.Components.Interactable;
 using Content.Server.GameObjects.Components.Mobs;
 using Content.Server.GameObjects.EntitySystems;
 using Content.Shared.Damage;
 using Content.Shared.GameObjects.Components.Body;
 using Content.Shared.GameObjects.Components.Damage;
 using Content.Shared.GameObjects.Components.Doors;
+using Content.Shared.GameObjects.Components.Interactable;
 using Content.Shared.GameObjects.Components.Movement;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects;
@@ -29,7 +32,7 @@ namespace Content.Server.GameObjects.Components.Doors
 {
     [RegisterComponent]
     [ComponentReference(typeof(IActivate))]
-    public class ServerDoorComponent : Component, IActivate, ICollideBehavior
+    public class ServerDoorComponent : Component, IActivate, ICollideBehavior, IInteractUsing
     {
         public override string Name => "Door";
 
@@ -45,7 +48,7 @@ namespace Content.Server.GameObjects.Components.Doors
         protected bool AutoClose = true;
         protected const float AutoCloseDelay = 5;
         protected float CloseSpeed = AutoCloseDelay;
-
+        
         private CancellationTokenSource _cancellationTokenSource = new CancellationTokenSource();
 
         private static readonly TimeSpan CloseTimeOne = TimeSpan.FromSeconds(0.3f);
@@ -60,11 +63,31 @@ namespace Content.Server.GameObjects.Components.Doors
 
         [ViewVariables] private bool _occludes;
 
+        [ViewVariables]
+        public bool IsWeldedShut
+        {
+            get => _isWeldedShut;
+            set
+            {
+                if (_isWeldedShut == value)
+                {
+                    return;
+                }
+
+                _isWeldedShut = value;
+                SetAppearance(_isWeldedShut ? DoorVisualState.Welded : DoorVisualState.Closed);
+            }
+        }
+        private bool _isWeldedShut;
+
+        private bool _canWeldShut = true;
+
         public override void ExposeData(ObjectSerializer serializer)
         {
             base.ExposeData(serializer);
 
             serializer.DataField(ref _occludes, "occludes", true);
+            serializer.DataField(ref _isWeldedShut, "welded", false);
         }
 
         public override void OnRemove()
@@ -129,7 +152,7 @@ namespace Content.Server.GameObjects.Components.Doors
 
         public virtual bool CanOpen()
         {
-            return true;
+            return !_isWeldedShut;
         }
 
         public bool CanOpen(IEntity user)
@@ -192,6 +215,7 @@ namespace Content.Server.GameObjects.Components.Doors
                 return;
             }
 
+            _canWeldShut = false;
             State = DoorState.Opening;
             SetAppearance(DoorVisualState.Opening);
             if (_occludes && Owner.TryGetComponent(out OccluderComponent? occluder))
@@ -325,6 +349,7 @@ namespace Content.Server.GameObjects.Components.Doors
 
                 await Timer.Delay(CloseTimeTwo, _cancellationTokenSource.Token);
 
+                _canWeldShut = true;
                 State = DoorState.Closed;
                 SetAppearance(DoorVisualState.Closed);
             }, _cancellationTokenSource.Token);
@@ -334,7 +359,7 @@ namespace Content.Server.GameObjects.Components.Doors
 
         public virtual void Deny()
         {
-            if (State == DoorState.Open)
+            if (State == DoorState.Open || _isWeldedShut)
             {
                 return;
             }
@@ -375,5 +400,20 @@ namespace Content.Server.GameObjects.Components.Doors
             Closing,
             Opening,
         }
+
+        public virtual async Task<bool> InteractUsing(InteractUsingEventArgs eventArgs)
+        {
+            if (!_canWeldShut)
+                return false;
+
+            if (!eventArgs.Using.TryGetComponent(out WelderComponent? tool))
+                return false;
+
+            if (!await tool.UseTool(eventArgs.User, Owner, 3f, ToolQuality.Welding, 3f, () => _canWeldShut))
+                return false;
+
+            IsWeldedShut ^= true;
+            return true;
+        }
     }
 }