From 2826392927be23e07a02850be991b0e367645c98 Mon Sep 17 00:00:00 2001
From: BuckarooBanzay <BuckarooBanzay@users.noreply.github.com>
Date: Sat, 9 Mar 2024 18:08:34 +0100
Subject: [PATCH] ignore invalid param2 rotations

---
 schematic_orient.lua | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/schematic_orient.lua b/schematic_orient.lua
index 9fcc483..59b2f99 100644
--- a/schematic_orient.lua
+++ b/schematic_orient.lua
@@ -30,10 +30,18 @@ local function rotate_param2(node_name, param2, angle)
 		local paramtype2 = def.paramtype2
 		if paramtype2 == "wallmounted" or paramtype2 == "colorwallmounted" then
 			local orient = param2 % 8
+			if not wallmounted_substitution[orient + 1] then
+				-- unknown rotation/param2
+				return param2
+			end
 			return param2 - orient + wallmounted_substitution[orient + 1]
 
 		elseif paramtype2 == "facedir" or paramtype2 == "colorfacedir" then
 			local orient = param2 % 32
+			if not facedir_substitution[orient + 1] then
+				-- unknown rotation/param2
+				return param2
+			end
 			return param2 - orient + facedir_substitution[orient + 1]
 
 		end