From 0cff50ef696aa53fb7c46a9a737b7cf3a05b7b9b Mon Sep 17 00:00:00 2001
From: mob-sakai <12690315+mob-sakai@users.noreply.github.com>
Date: Fri, 14 Mar 2025 19:43:48 +0900
Subject: [PATCH] fix: NRE on enable

close #359
---
 Packages/src/Runtime/Utilities/ParticleSystemExtensions.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Packages/src/Runtime/Utilities/ParticleSystemExtensions.cs b/Packages/src/Runtime/Utilities/ParticleSystemExtensions.cs
index b9c08a0..709fce8 100644
--- a/Packages/src/Runtime/Utilities/ParticleSystemExtensions.cs
+++ b/Packages/src/Runtime/Utilities/ParticleSystemExtensions.cs
@@ -187,6 +187,8 @@ namespace Coffee.UIParticleInternal
 
         public static bool IsSubEmitterOf(this ParticleSystem self, ParticleSystem parent)
         {
+            if (!self || !parent) return false;
+
             var subEmitters = parent.subEmitters;
             var count = subEmitters.subEmittersCount;
             for (var i = 0; i < count; i++)