From 487dd113b05aa54a8683f6be980a60f3e431d226 Mon Sep 17 00:00:00 2001
From: HoofedEar <HoofedEar@users.noreply.github.com>
Date: Thu, 22 Feb 2024 03:26:02 -0800
Subject: [PATCH] Add RequiresGrid component (#23394)

* saving working code

* add checks for deletion
---
 .../RequiresGrid/RequiresGridComponent.cs     | 11 +++++++
 .../RequiresGrid/RequiresGridSystem.cs        | 29 +++++++++++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 Content.Server/RequiresGrid/RequiresGridComponent.cs
 create mode 100644 Content.Server/RequiresGrid/RequiresGridSystem.cs

diff --git a/Content.Server/RequiresGrid/RequiresGridComponent.cs b/Content.Server/RequiresGrid/RequiresGridComponent.cs
new file mode 100644
index 0000000000..0e956c9ad9
--- /dev/null
+++ b/Content.Server/RequiresGrid/RequiresGridComponent.cs
@@ -0,0 +1,11 @@
+namespace Content.Server.RequiresGrid;
+
+/// <summary>
+/// Destroys an entity when they no longer are part of a Grid
+/// </summary>
+[RegisterComponent]
+[Access(typeof(RequiresGridSystem))]
+public sealed partial class RequiresGridComponent : Component
+{
+
+}
diff --git a/Content.Server/RequiresGrid/RequiresGridSystem.cs b/Content.Server/RequiresGrid/RequiresGridSystem.cs
new file mode 100644
index 0000000000..16a20c9a8a
--- /dev/null
+++ b/Content.Server/RequiresGrid/RequiresGridSystem.cs
@@ -0,0 +1,29 @@
+using Content.Server.Destructible;
+
+namespace Content.Server.RequiresGrid;
+
+public sealed class RequiresGridSystem : EntitySystem
+{
+    [Dependency] private readonly DestructibleSystem _destructible = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<RequiresGridComponent, EntParentChangedMessage>(OnEntParentChanged);
+    }
+
+    private void OnEntParentChanged(EntityUid owner, RequiresGridComponent component, EntParentChangedMessage args)
+    {
+        if (args.OldParent == null)
+            return;
+
+        if (args.Transform.GridUid != null)
+            return;
+
+        if (TerminatingOrDeleted(owner))
+            return;
+
+        _destructible.DestroyEntity(owner);
+    }
+}