Fix crash on constant signal dialog

4 years ago · 707323591b
parent 807deaa705
commit 707323591b
1 changed files with 5 additions and 0 deletions
--- a/src/js/game/systems/constant_signal.js
+++ b/src/js/game/systems/constant_signal.js
@ -107,6 +107,11 @@ export class ConstantSignalSystem extends GameSystemWithFilter {
     * @returns {BaseItem}
     */
    parseSignalCode(code) {
+        if (!this.root || !this.root.shapeDefinitionMgr) {
+            // Stale reference
+            return null;
+        }
+
        code = trim(code);
        const codeLower = code.toLowerCase();