From 1a6c91f4e9f764af185bf339a8f6d123273be02a Mon Sep 17 00:00:00 2001
From: tobspr <tobias.springer1@googlemail.com>
Date: Tue, 18 Aug 2020 20:07:44 +0200
Subject: [PATCH] Fix crash

---
 src/js/game/systems/logic_gate.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/js/game/systems/logic_gate.js b/src/js/game/systems/logic_gate.js
index 1921cb9d..faf95110 100644
--- a/src/js/game/systems/logic_gate.js
+++ b/src/js/game/systems/logic_gate.js
@@ -228,7 +228,7 @@ export class LogicGateSystem extends GameSystemWithFilter {
         const lowerLayer = /** @type {import("../shape_definition").ShapeLayer} */ (definition.layers[0]);
         const topRightContent = lowerLayer[0];
 
-        if (!topRightContent) {
+        if (!topRightContent || topRightContent.subShape === null) {
             return [null, null];
         }