From 46c1480f42a579141717b822d6efbf2c47051e1c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=A0=94=E7=A9=B6=E7=A4=BE=E4=BA=A4?= <cryscan@umich.edu>
Date: Mon, 20 Dec 2021 20:33:38 +0000
Subject: [PATCH] Fix hierarchy example panic (#3378)

# Objective
Fixes #3321

## Solution
Uses `despawn_recursive()` instead of `despawn()` when removing children.
---
 examples/ecs/hierarchy.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/ecs/hierarchy.rs b/examples/ecs/hierarchy.rs
index e3f4e36dd72e5..7de8f8d4b872d 100644
--- a/examples/ecs/hierarchy.rs
+++ b/examples/ecs/hierarchy.rs
@@ -107,7 +107,7 @@ fn rotate(
         // seconds
         if time.seconds_since_startup() >= 2.0 && children.len() == 3 {
             let child = children.last().copied().unwrap();
-            commands.entity(child).despawn();
+            commands.entity(child).despawn_recursive();
         }
 
         if time.seconds_since_startup() >= 4.0 {