From cb2c044c08bfb22ae3810d6b0d87f3d741c9a224 Mon Sep 17 00:00:00 2001
From: Vera Aguilera Puerto <gradientvera@outlook.com>
Date: Fri, 22 Oct 2021 23:46:26 +0200
Subject: [PATCH] Fix exception with CableTerminalPortNode assuming an entity's
 GridID can never be zero.

---
 Content.Server/Power/Nodes/CableTerminalPortNode.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Content.Server/Power/Nodes/CableTerminalPortNode.cs b/Content.Server/Power/Nodes/CableTerminalPortNode.cs
index 5d3db43702..ba7cda71d5 100644
--- a/Content.Server/Power/Nodes/CableTerminalPortNode.cs
+++ b/Content.Server/Power/Nodes/CableTerminalPortNode.cs
@@ -12,6 +12,9 @@ namespace Content.Server.Power.Nodes
     {
         public override IEnumerable<Node> GetReachableNodes()
         {
+            if (Owner.Transform.GridID == GridId.Invalid)
+                yield break; // No funny nodes in spess.
+
             var entMan = IoCManager.Resolve<IEntityManager>();
             var grid = IoCManager.Resolve<IMapManager>().GetGrid(Owner.Transform.GridID);
             var gridIndex = grid.TileIndicesFor(Owner.Transform.Coordinates);