From b67d43d237455c4886173cf2833ca1c2bc0c8f67 Mon Sep 17 00:00:00 2001
From: Arokha Sieyes <arokha@arokha.com>
Date: Wed, 17 Jan 2018 21:15:44 -0500
Subject: [PATCH] POLARIS: Sanity check in plane_holder

This was related to a bug we encountered. The bug doesn't affect you, but it makes sense to give this sanity check here too.
---
 code/modules/mob/mob_planes.dm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/code/modules/mob/mob_planes.dm b/code/modules/mob/mob_planes.dm
index 947619a2b28..9e4952ba269 100644
--- a/code/modules/mob/mob_planes.dm
+++ b/code/modules/mob/mob_planes.dm
@@ -7,6 +7,7 @@
 	var/list/plane_masters[VIS_COUNT]
 
 /datum/plane_holder/New(mob/this_guy)
+	ASSERT(ismob(this_guy))
 	my_mob = this_guy
 
 	//It'd be nice to lazy init these but some of them are important to just EXIST. Like without ghost planemaster, you can see ghosts. Go figure.