From b93e0e4701c7011176eeec5c109dda7f4ea632e0 Mon Sep 17 00:00:00 2001
From: mob-sakai <sakai861104@gmail.com>
Date: Tue, 23 Feb 2021 13:30:46 +0900
Subject: [PATCH] fix: ParticleSystem creates particles in wrong position
 during pre-warm

Close #147
---
 Scripts/UIParticle.cs | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/Scripts/UIParticle.cs b/Scripts/UIParticle.cs
index 11e4be9..26540f4 100755
--- a/Scripts/UIParticle.cs
+++ b/Scripts/UIParticle.cs
@@ -178,6 +178,11 @@ namespace Coffee.UIExtensions
             particles.Exec(p => p.Stop());
         }
 
+        public void Clear()
+        {
+            particles.Exec(p => p.Clear());
+        }
+
         public void SetParticleSystemInstance(GameObject instance)
         {
             SetParticleSystemInstance(instance, true);
@@ -411,17 +416,20 @@ namespace Coffee.UIExtensions
 
         private new IEnumerator Start()
         {
+            // #147: ParticleSystem creates Particles in wrong position during prewarm
             // #148: Particle Sub Emitter not showing when start game
-            var hasPlayingSubEmitter = particles.AnyFast(ps =>
+            var delayToPlay = particles.AnyFast(ps =>
             {
                 ps.GetComponentsInChildren(false, s_ParticleSystems);
-                return s_ParticleSystems.AnyFast(p => p.isPlaying && p.subEmitters.enabled);
+                return s_ParticleSystems.AnyFast(p => p.isPlaying && (p.subEmitters.enabled || p.main.prewarm));
             });
             s_ParticleSystems.Clear();
-            if (!hasPlayingSubEmitter) yield break;
+            if (!delayToPlay) yield break;
 
             Stop();
+            Clear();
             yield return null;
+
             Play();
         }