chore(release): 3.3.7 [skip ci]

## [3.3.7](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.6...3.3.7) (2021-06-02)

### Bug Fixes

* Refresh() will be called multiple times in the same frame, due to external assets ([0b9d80d](0b9d80da93))

CHANGELOG.md

@@ -1,3 +1,26 @@
+## [3.3.7](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.6...3.3.7) (2021-06-02)
+
+
+### Bug Fixes
+
+* Refresh() will be called multiple times in the same frame, due to external assets ([0b9d80d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0b9d80da939580c72ca1471081d7a034edc985d4))
+
+## [3.3.6](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.5...3.3.6) (2021-05-11)
+
+
+### Bug Fixes
+
+* In rare cases, the generated camera (for baking) will not be deactivated ([12c748a](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/12c748a8cd4adfd2dc5f085cec77050431f261a4))
+* remove from "Add Component" menu ([476c402](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/476c4027ff5f70fb9b4c026dd5fc59bf5a876227))
+
+## [3.3.5](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.4...3.3.5) (2021-02-28)
+
+
+### Bug Fixes
+
+* fix cached position for pre-warmed particles ([e3f42d7](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/e3f42d747a7fd973b5813cc72a9444943a6c3ad0))
+* ParticleSystem creates particles in wrong position during pre-warm ([b93e0e4](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/b93e0e4701c7011176eeec5c109dda7f4ea632e0)), closes [#147](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/147)
+
 ## [3.3.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/3.3.3...3.3.4) (2021-02-22)
 
 

Scripts/BakingCamera.cs

@@ -2,6 +2,7 @@
 
 namespace Coffee.UIParticleExtensions
 {
+    [AddComponentMenu("")]
     internal class BakingCamera : MonoBehaviour
     {
         static BakingCamera s_Instance;
@@ -40,12 +41,11 @@ namespace Coffee.UIParticleExtensions
                 // Find instance in scene, or create new one.
                 return s_Instance
                     ? s_Instance
-                    : (s_Instance = FindObjectOfType<BakingCamera>() ?? Create());
+                    : (s_Instance = Create());
             }
         }
 
         private Camera _camera;
-        // private int _refCount;
 
         private static BakingCamera Create()
         {
@@ -56,6 +56,7 @@ namespace Coffee.UIParticleExtensions
 
             var inst = gameObject.AddComponent<BakingCamera>();
             inst._camera = gameObject.AddComponent<Camera>();
+            inst._camera.enabled = false;
             inst._camera.orthographic = true;
 
             // Turn camera off because particle mesh baker will use only camera matrix

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);
@@ -390,7 +395,6 @@ namespace Coffee.UIExtensions
 #if !SERIALIZE_FIELD_MASKABLE
             maskable = m_Maskable;
 #endif
-            _cachedPosition = transform.position;
             activeMeshIndices.Clear();
 
             UIParticleUpdater.Register(this);
@@ -411,17 +415,20 @@ 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();
         }
 

Scripts/UIParticleUpdater.cs

@@ -11,6 +11,7 @@ namespace Coffee.UIExtensions
         static readonly List<UIParticle> s_ActiveParticles = new List<UIParticle>();
         static MaterialPropertyBlock s_Mpb;
         static ParticleSystem.Particle[] s_Particles = new ParticleSystem.Particle[2048];
+        private static int frameCount = 0;
 
 
         public static void Register(UIParticle particle)
@@ -41,6 +42,10 @@ namespace Coffee.UIExtensions
 
         private static void Refresh()
         {
+            // Do not allow it to be called in the same frame.
+            if (frameCount == Time.frameCount) return;
+            frameCount = Time.frameCount;
+
             Profiler.BeginSample("[UIParticle] Refresh");
             for (var i = 0; i < s_ActiveParticles.Count; i++)
             {
@@ -154,6 +159,9 @@ namespace Coffee.UIExtensions
 
             particle.cachedPosition = position;
 
+            if (particle.activeMeshIndices.CountFast() == 0)
+                diff = Vector3.zero;
+
             for (var i = 0; i < particle.particles.Count; i++)
             {
                 Profiler.BeginSample("[UIParticle] Bake Mesh > Push index");

package.json

@@ -2,7 +2,7 @@
   "name": "com.coffee.ui-particle",
   "displayName": "UI Particle",
   "description": "This plugin provide a component to render particle effect for uGUI.\nThe particle rendering is maskable and sortable, without Camera, RenderTexture or Canvas.",
-  "version": "3.3.4",
+  "version": "3.3.7",
   "unity": "2018.2",
   "license": "MIT",
   "repository": {