From 36d76527326c8ab4974960eb0b35c86f79f563f0 Mon Sep 17 00:00:00 2001
From: Wofsauge <jan-.-@t-online.de>
Date: Thu, 21 Oct 2021 19:06:20 +0200
Subject: [PATCH] Fixed mirror dimension detection for off-grid rooms like
 Devil Deal

---
 main.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/main.lua b/main.lua
index 7c4f8d80..c66bad07 100644
--- a/main.lua
+++ b/main.lua
@@ -377,7 +377,7 @@ local function IsMirror()
 	local level = game:GetLevel()
 	local id = level:GetCurrentRoomIndex()
 
-	return GetPtrHash(level:GetRoomByIdx(id)) == GetPtrHash(level:GetRoomByIdx(id, 1))
+	return id >=0 and GetPtrHash(level:GetRoomByIdx(id)) == GetPtrHash(level:GetRoomByIdx(id, 1))
 end
 
 local isMirrorRoom = false