chore(release): 4.11.4 [skip ci]

## [4.11.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.3...v4.11.4) (2025-12-24)

### Bug Fixes

* add early return for case where subEmitter module is disabled ([d1386a1](d1386a1221))
* avoid endless loop ([eb2e862](eb2e862e80)), closes [#392](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/392)

.github/CODEOWNERS

@@ -1,6 +0,0 @@
-# This is a comment.
-# Each line is a file pattern followed by one or more owners.
-# https://docs.github.com/ja/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
-
-# Default owners
-* @mob-sakai

.github/FUNDING.yml

@@ -1,12 +0,0 @@
-# These are supported funding model platforms
-
-github: mob-sakai # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
-patreon: mob_sakai # Replace with a single Patreon username
-open_collective: # Replace with a single Open Collective username
-ko_fi: # Replace with a single Ko-fi username
-tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
-community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
-liberapay: # Replace with a single Liberapay username
-issuehunt: # Replace with a single IssueHunt username
-otechie: # Replace with a single Otechie username
-custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,35 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-title: ''
-labels: bug
-assignees: mob-sakai
-
----
-
-NOTE: Your issue may already be reported! Please search on the [issue tracker](../) before creating one.
-
-**Describe the bug**
-A clear and concise description of what the bug is.
-
-**To Reproduce**
-Steps to reproduce the behavior:
-1. Go to '...'
-2. Click on '....'
-3. Scroll down to '....'
-4. See error
-
-**Expected behavior**
-A clear and concise description of what you expected to happen.
-
-**Screenshots**
-If applicable, add screenshots to help explain your problem.
-
-**Environment (please complete the following information):**
- - Version [e.g. 1.0.0]
- - Platform: [e.g. Editor(Windows/Mac), Standalone(Windows/Mac), iOS, Android, WebGL]
- - Unity version: [e.g. 2018.2.8f1]
- - Build options: [e.g. IL2CPP, .Net 4.x, LWRP]
-
-**Additional context**
-Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,22 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project
-title: ''
-labels: enhancement
-assignees: mob-sakai
-
----
-
-NOTE: Your issue may already be reported! Please search on the [issue tracker](../) before creating one.
-
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
-
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
-
-**Describe alternatives you've considered**
-A clear and concise description of any alternative solutions or features you've considered.
-
-**Additional context**
-Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/question.md

@@ -1,16 +0,0 @@
----
-name: Question
-about: Ask a question about this project
-title: ''
-labels: question
-assignees: mob-sakai
-
----
-
-NOTE: Your issue may already be reported! Please search on the [issue tracker](../) before creating one.
-
-**Describe what help do you need**
-A description of the question.
-
-**Additional context**
-Add any other context or screenshots about the question here.

.github/pull_request_template.md

@@ -1,37 +0,0 @@
-
-# Pull Request Template
-
-## Description
-
-- Please include a summary of the change and which issue is fixed.
-- Please also include relevant motivation and context.
-- List any dependencies that are required for this change.
-
-Fixes #{issue_number}
-
-## Type of change
-
-Please write the commit message in the format corresponding to the change type.
-Please see [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/) for more information.
-
-- [ ] Bug fix (non-breaking change which fixes an issue)  
-- [ ] New feature (non-breaking change which adds functionality)  
-- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
-- [ ] Update documentations
-- [ ] Others (refactoring, style changes, etc.)
-
-## Test environment
-
-- Platform: [e.g. Editor(Windows/Mac), Standalone(Windows/Mac), iOS, Android, WebGL]
-- Unity version: [e.g. 2022.2.0f1]
-- Build options: [e.g. IL2CPP, .Net 4.x, URP/HDRP]
-
-## Checklist
-
-- [ ] This pull request is for merging into the `develop` branch
-- [ ] My code follows the style guidelines of this project
-- [ ] I have performed a self-review of my own code
-- [ ] I have commented my code, particularly in hard-to-understand areas
-- [ ] I have made corresponding changes to the documentation
-- [ ] My changes generate no new warnings
-- [ ] I have checked my code and corrected any misspellings

.github/workflows/deploy.yml

@@ -1,28 +0,0 @@
-name: 🚀 Deploy with Zip
-
-on:
-  workflow_dispatch:
-    inputs:
-      zip:
-        description: "The url to the zip file"
-        required: true
-
-jobs:
-  deploy:
-    name: 🚀 Deploy
-    runs-on: ubuntu-latest
-    permissions:
-      pages: write
-      id-token: write
-    steps:
-      - name: 📦 Download zip file To '_site'
-        run: |
-          curl -L ${{ github.event.inputs.zip }} -o _site.zip
-          unzip _site.zip -d _site
-          find _site -name __MACOSX | xargs rm -rf
-
-      - name: 📦 Upload '_site'
-        uses: actions/upload-pages-artifact@v3
-
-      - name: 🚀 Deploy To GitHub Pages
-        uses: actions/deploy-pages@v4

.github/workflows/release.yml

@@ -5,9 +5,8 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - preview
-      - main
-      - v*.x
+      - release
+      - release-*
     tags-ignore:
       - "**"
 
@@ -23,12 +22,15 @@ jobs:
       channel: ${{ steps.release.outputs.new_release_channel }}
       released: ${{ steps.release.outputs.new_release_published }}
       tag: ${{ steps.release.outputs.new_release_git_tag }}
+      version: ${{ steps.release.outputs.new_release_version }}
+      merge_to: ${{ steps.summary.outputs.merge_to }}
+      split_to: ${{ steps.summary.outputs.split_to }}
     steps:
       - name: 🚚 Checkout (${{ github.ref_name }})
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: 🔖 Run semantic release
-        uses: cycjimmy/semantic-release-action@v4
+        uses: cycjimmy/semantic-release-action@v5
         id: release
         with:
           working_directory: Packages/src
@@ -38,7 +40,62 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
 
-      - run: |
+      - id: summary
+        run: |
           echo "🔖 New release published: '${{ steps.release.outputs.new_release_published }}'" | tee -a $GITHUB_STEP_SUMMARY
+          echo "🔖 New release version: '${{ steps.release.outputs.new_release_version }}'" | tee -a $GITHUB_STEP_SUMMARY
           echo "🔖 New release channel: '${{ steps.release.outputs.new_release_channel }}'" | tee -a $GITHUB_STEP_SUMMARY
           echo "🔖 New release git tag: '${{ steps.release.outputs.new_release_git_tag }}'" | tee -a $GITHUB_STEP_SUMMARY
+          
+          if [ '${{ steps.release.outputs.new_release_published }}' = 'false' ]; then
+            echo "No new release published." | tee -a $GITHUB_STEP_SUMMARY
+          elif [ '${{ github.ref_name }}' = 'release' ]; then
+            echo "merge_to=develop" | tee -a $GITHUB_OUTPUT $GITHUB_STEP_SUMMARY
+            echo "split_to=main" | tee -a $GITHUB_OUTPUT $GITHUB_STEP_SUMMARY
+          else
+            channel=$(echo ${{ github.ref_name }} | sed 's/^release-//')
+            echo "merge_to=develop-${channel}" | tee -a $GITHUB_OUTPUT $GITHUB_STEP_SUMMARY
+            echo "split_to=${channel}" | tee -a $GITHUB_OUTPUT $GITHUB_STEP_SUMMARY
+          fi
+
+  merge-to:
+    if: needs.release.outputs.merge_to != ''
+    needs: release
+    name: 🔀 Merge to ${{ needs.release.outputs.merge_to }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: 🚚 Checkout (${{ needs.release.outputs.merge_to }})
+        uses: actions/checkout@v5
+        with:
+          ref: ${{ needs.release.outputs.merge_to }}
+          fetch-depth: 0
+      - name: 🔀 Merge '${{ needs.release.outputs.tag }}' into '${{ needs.release.outputs.merge_to }}'
+        run: |
+          git config --local user.email "github-actions[bot]@users.noreply.github.com"
+          git config --local user.name "github-actions[bot]"
+          
+          git merge ${{ needs.release.outputs.tag }}
+          git push origin ${{ needs.release.outputs.merge_to }}
+
+  split-to:
+    if: needs.release.outputs.split_to != ''
+    needs: release
+    name: 🔀 Split package to ${{ needs.release.outputs.split_to }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: 🚚 Checkout (${{ needs.release.outputs.tag }})
+        uses: actions/checkout@v5
+        with:
+          ref: ${{ needs.release.outputs.tag }}
+          fetch-depth: 0
+      - name: 🔀 Split subtree 'Packages/src' to '${{ needs.release.outputs.split_to }}'
+        run: |
+          split_to=${{ needs.release.outputs.split_to }}
+          git branch $split_to origin/$split_to
+          git subtree split --prefix=Packages/src --branch $split_to
+          git tag ${{ needs.release.outputs.version }} $split_to
+          git push origin ${{ needs.release.outputs.version }} $split_to:$split_to

.github/workflows/test.yml

@@ -10,6 +10,7 @@ env:
   MINIMUM_VERSION: 2019.4
   # EXCLUDE_FILTER: The excluded versions of Unity.
   EXCLUDE_FILTER: "(2020.2.0|2021.1|2023.3)"
+  PROJECT_PATH: .
 
 on:
   workflow_dispatch:
@@ -21,7 +22,7 @@ on:
   push:
     branches:
       - develop
-      - develop-preview
+      - "develop-*"
     tags:
       - "!*"
     paths-ignore:
@@ -71,11 +72,11 @@ jobs:
     steps:
       - name: 🚚 Checkout ($${{ github.ref }})
         if: github.event_name == 'push'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: 🚚 Checkout pull request (pull_request_target)
         if: github.event_name == 'pull_request_target'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           fetch-depth: 0
@@ -85,25 +86,27 @@ jobs:
         run: |
           git config user.name "GitHub Actions"
           git config user.email "actions@github.com"
-          git merge origin/${{ github.event.pull_request.base.ref }} --no-edit
+          git rebase ${{ github.event.pull_request.base.sha }}
+          git log --oneline -n 10
 
       - name: 📥 Cache library
         uses: actions/cache@v4
         with:
-          path: Library
-          key: Library-${{ matrix.unityVersion }}-${{ github.event.pull_request.head.sha || github.sha }}
+          path: ${{ env.PROJECT_PATH }}/Library
+          key: ${{ env.PROJECT_PATH }}-Library-${{ matrix.unityVersion }}-${{ github.event.pull_request.head.sha || github.sha }}
           restore-keys: |
-            Library-${{ matrix.unityVersion }}-
-            Library-
+            ${{ env.PROJECT_PATH }}-Library-${{ matrix.unityVersion }}-
+            ${{ env.PROJECT_PATH }}-Library-
 
       - name: 🛠️ Build Unity Project (Test)
-        uses: game-ci/unity-builder@v4
+        uses: game-ci/unity-builder@main
         timeout-minutes: 45
         with:
           customImage: ghcr.io/mob-sakai/unity3d:${{ matrix.unityVersion }}
           targetPlatform: StandaloneLinux64
           allowDirtyBuild: true
           customParameters: -nographics
+          projectPath: ${{ env.PROJECT_PATH }}
         env:
           UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
           UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
@@ -118,6 +121,7 @@ jobs:
           customParameters: -nographics
           checkName: ${{ matrix.unityVersion }} Test Results
           githubToken: ${{ github.token }}
+          projectPath: ${{ env.PROJECT_PATH }}
         env:
           UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
           UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}

Assets/ProjectSettings/NanoMonitor.asset

@@ -18,11 +18,12 @@ MonoBehaviour:
   m_EnabledInEditor: 1
   m_AlwaysIncludeAssembly: 1
   m_InstantiateOnLoad: 1
-  m_Prefab: {fileID: 7211429669315726685, guid: b73940fc30a2f4eb9a73783e9c1f8da6,
+  m_Prefab: {fileID: 4567906826058368312, guid: 7cebff2d255b9433cbe23b243c193329,
     type: 3}
   m_Interval: 0.5
   m_Anchor: 0
   m_Width: 750
+  m_HelpUrl: https://github.com/mob-sakai/ParticleEffectForUGUI
   m_CustomMonitorItems:
   - m_Format: Screen:{0}x{1}
     m_Arg0:

Assets/ProjectSettings/NanoMonitor.prefab.meta

@@ -1,7 +0,0 @@
-fileFormatVersion: 2
-guid: b73940fc30a2f4eb9a73783e9c1f8da6
-PrefabImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

Assets/ProjectSettings/UIParticleProjectSettings.asset

@@ -10,7 +10,7 @@ MonoBehaviour:
   m_Enabled: 1
   m_EditorHideFlags: 0
   m_Script: {fileID: 11500000, guid: f22a23b9d98e440478697f4adf30e61c, type: 3}
-  m_Name: UIParticle
+  m_Name: UIParticleProjectSettings
   m_EditorClassIdentifier: 
   m_EnableLinearToGamma: 1
   m_HideGeneratedObjects: 1

Assets/ProjectSettings/UIParticleProjectSettings.asset.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 4b9df7b8a4193489299b8f477348ae0c
+guid: a5b9278dfbd194d04b1c6ae7031928c1
 NativeFormatImporter:
   externalObjects: {}
   mainObjectFileID: 11400000

Assets/Tests/Editor/NewTestScript.cs

@@ -1,16 +1,21 @@
 using System.Collections;
+using Coffee.UIParticleInternal;
 using NUnit.Framework;
+using UnityEngine;
 using UnityEngine.TestTools;
 
 namespace Coffee.UIParticle.Editor.Tests
 {
     public class NewTestScript
     {
-        // A Test behaves as an ordinary method
-        [Test]
-        public void NewTestScriptSimplePasses()
+        [TestCase(-1)]
+        [TestCase(0)]
+        [TestCase(2048)]
+        [TestCase(3000)]
+        public void GetParticleArray(int requiredSize)
         {
-            // Use the Assert class to test conditions
+            var array = ParticleSystemExtensions.GetParticleArray(requiredSize);
+            Debug.Log($"requiredSize: {requiredSize}, array.Length: {array.Length}");
         }
 
         // A UnityTest behaves like a coroutine in Play Mode. In Edit Mode you can use

Packages/packages-lock.json

@@ -5,14 +5,14 @@
       "depth": 0,
       "source": "git",
       "dependencies": {},
-      "hash": "52987fb6e66e7fc48498d8d164c3c8808de4de6b"
+      "hash": "3c280f1a8f4db5038b881ff07f270efd9638fa31"
     },
     "com.coffee.minimal-resource": {
       "version": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/MinimalResource",
       "depth": 0,
       "source": "git",
       "dependencies": {},
-      "hash": "52987fb6e66e7fc48498d8d164c3c8808de4de6b"
+      "hash": "3c280f1a8f4db5038b881ff07f270efd9638fa31"
     },
     "com.coffee.nano-monitor": {
       "version": "https://github.com/mob-sakai/Coffee.Internal.git?path=Packages/NanoMonitor",
@@ -21,7 +21,7 @@
       "dependencies": {
         "com.unity.ugui": "1.0.0"
       },
-      "hash": "52987fb6e66e7fc48498d8d164c3c8808de4de6b"
+      "hash": "3c280f1a8f4db5038b881ff07f270efd9638fa31"
     },
     "com.coffee.ui-particle": {
       "version": "file:src",

Packages/src/.releaserc.json

@@ -1,13 +1,12 @@
 {
   "branches": [
-    "main",
-    "[0-9]+.x",
+    "release",
+    "release-4.x",
     {
-      "name": "preview",
-      "prerelease": true
+      "name": "release-preview",
+      "prerelease": "preview"
     }
   ],
-  "tagFormat": "${version}",
   "plugins": [
     "@semantic-release/commit-analyzer",
     "@semantic-release/release-notes-generator",

Packages/src/CHANGELOG.md

@@ -1,15 +1,57 @@
-# [5.0.0-preview.13](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/5.0.0-preview.12...5.0.0-preview.13) (2025-01-03)
+## [4.11.4](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.3...v4.11.4) (2025-12-24)
+
+
+### Bug Fixes
+
+* add early return for case where subEmitter module is disabled ([d1386a1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/d1386a12216743a6e09f1b9b87bea1dfcf7702e4))
+* avoid endless loop ([eb2e862](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/eb2e862e80e549c8cf16ddfed776c101c2413bac)), closes [#392](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/392)
+
+## [4.11.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.2...v4.11.3) (2025-10-14)
+
+
+### Bug Fixes
+
+* fix icon ([a9461ec](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/a9461ecb4d40d7fe878e12465d6e38faae7ae65b))
+* fix URL link in README ([1c8c65d](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1c8c65d25e7f6fe7b1d20da4461333df8fc7578e)), closes [#376](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/376)
+* fix: second and subsequent bursts not displayed when world simulation and non-looping ([df2f3ca](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/df2f3caafbe279f1457d74f8183cb561ac14aa17)), closes [#326](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/326)
+* UIParticle in canvas with 0f-0.01f alpha value does not start to play until alpha value is greater than 0.01f, causes play calls to be delayed unintentionally if canvas alpha value is set to mentioned value range ([38aec2e](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/38aec2ea1afd77677d629c86665a3342d92e49d9))
+
+## [4.11.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.1...v4.11.2) (2025-03-15)
+
+
+### Bug Fixes
+
+* IL2CPP build fails on older versions of Unity ([0da6525](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0da652520cd165b43de7404c0b0ab1fbcf9349d1))
+* NRE on enable ([0cff50e](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/0cff50ef696aa53fb7c46a9a737b7cf3a05b7b9b)), closes [#359](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/359)
+
+## [4.11.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.11.0...v4.11.1) (2025-02-21)
+
+
+### Bug Fixes
+
+* component icons will no longer be displayed in the scene view ([6dfbdae](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/6dfbdae38d3822ab9c2c6f0e4ca1ca32ee98a239))
+
+# [4.11.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.7...v4.11.0) (2025-02-21)
 
 
 ### Features
 
-* change the default value of `UIParticle.scale` from `10` to `1` ([9955eef](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/9955eefdc22cf565502f85c87cd2efd3a25fbe50))
-* UIParticle no longer inherits from MaskableGraphic ([c09bfb8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/c09bfb81abc9179bf5fc49d29eaf7fc4ed01a4dc))
+* add 'TimeScaleMultiplier' option ([925af0b](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/925af0b6046f65f23a778f67cefa8ff9cbedb513))
+
+## [4.10.7](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.6...v4.10.7) (2025-01-14)
 
 
-### BREAKING CHANGES
+### Bug Fixes
 
-* Some members inherited from MaskableGraphic will no longer be available.
+* editor crashed on exit play mode (editor, windows) ([47ee45c](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/47ee45cbbe651a8f87ca2b8a3948f8b88db8211e)), closes [#351](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/351)
+
+## [4.10.6](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.5...v4.10.6) (2025-01-03)
+
+
+### Bug Fixes
+
+* sub-emitter particles may not render correctly in certain scenarios ([8276684](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/8276684c3b1646f0490ed64557547ba15281664a)), closes [#348](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/348)
+* sub-emitter's `inherit velocity` module doubles at runtime ([67de3d1](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/67de3d1bd3e16dc9b564625cb990c53d75769506)), closes [#349](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/349)
 
 ## [4.10.5](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/v4.10.4...v4.10.5) (2024-12-23)
 

Packages/src/Editor/UIParticleEditor.cs

@@ -2,6 +2,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text.RegularExpressions;
 using UnityEditor;
+using UnityEditor.UI;
 using UnityEditorInternal;
 using UnityEngine;
 using UnityEngine.Profiling;
@@ -25,7 +26,7 @@ namespace Coffee.UIExtensions
 {
     [CustomEditor(typeof(UIParticle))]
     [CanEditMultipleObjects]
-    internal class UIParticleEditor : Editor
+    internal class UIParticleEditor : GraphicEditor
     {
         internal class State : ScriptableSingleton<State>
         {
@@ -61,6 +62,7 @@ namespace Coffee.UIExtensions
         private SerializedProperty _autoScalingMode;
         private SerializedProperty _useCustomView;
         private SerializedProperty _customViewSize;
+        private SerializedProperty _timeScaleMultiplier;
         private ReorderableList _ro;
         private bool _showMax;
         private bool _is3DScaleMode;
@@ -85,8 +87,10 @@ namespace Coffee.UIExtensions
         /// <summary>
         /// This function is called when the object becomes enabled and active.
         /// </summary>
-        private void OnEnable()
+        protected override void OnEnable()
         {
+            base.OnEnable();
+
             _maskable = serializedObject.FindProperty("m_Maskable");
             _scale3D = serializedObject.FindProperty("m_Scale3D");
             _animatableProperties = serializedObject.FindProperty("m_AnimatableProperties");
@@ -97,6 +101,7 @@ namespace Coffee.UIExtensions
             _autoScalingMode = serializedObject.FindProperty("m_AutoScalingMode");
             _useCustomView = serializedObject.FindProperty("m_UseCustomView");
             _customViewSize = serializedObject.FindProperty("m_CustomViewSize");
+            _timeScaleMultiplier = serializedObject.FindProperty("m_TimeScaleMultiplier");
 
             var sp = serializedObject.FindProperty("m_Particles");
             _ro = new ReorderableList(sp.serializedObject, sp, true, true, true, true)
@@ -241,6 +246,9 @@ namespace Coffee.UIExtensions
                 _customViewSize.floatValue = Mathf.Max(0.1f, _customViewSize.floatValue);
             }
 
+            // Time Scale Multiplier
+            EditorGUILayout.PropertyField(_timeScaleMultiplier);
+
             // Target ParticleSystems.
             EditorGUI.BeginChangeCheck();
             _ro.DoLayoutList();
@@ -456,11 +464,9 @@ namespace Coffee.UIExtensions
         {
             if (!p || (ignoreCurrent && target == p)) return;
 
-            Misc.DestroyImmediate(p);
-            if (p.TryGetComponent<CanvasRenderer>(out var cr))
-            {
-                Misc.DestroyImmediate(cr);
-            }
+            var cr = p.canvasRenderer;
+            DestroyImmediate(p);
+            DestroyImmediate(cr);
 
 #if UNITY_2018_3_OR_NEWER
             var stage = PrefabStageUtility.GetCurrentPrefabStage();

Packages/src/Icons.meta

@@ -1,8 +0,0 @@
-fileFormatVersion: 2
-guid: 7a55e246f37df405bac88eac692e3a86
-folderAsset: yes
-DefaultImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

Packages/src/README.md

@@ -1,9 +1,9 @@
-# <img alt="UIParticleIcon" src="https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/d76e105e-a840-4f61-a1f6-8cf311c0812d" width="26"/> UI Particle v5 <!-- omit in toc -->
+# <img alt="UIParticleIcon" src="https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/d76e105e-a840-4f61-a1f6-8cf311c0812d" width="26"/> Particle Effect For UGUI (UI Particle) <!-- omit in toc -->
 
 [![](https://img.shields.io/npm/v/com.coffee.ui-particle?label=openupm&registry_uri=https://package.openupm.com)](https://openupm.com/packages/com.coffee.ui-particle/)
 [![](https://img.shields.io/github/v/release/mob-sakai/ParticleEffectForUGUI)](https://github.com/mob-sakai/ParticleEffectForUGUI/releases)
 [![](https://img.shields.io/github/license/mob-sakai/ParticleEffectForUGUI.svg)](https://github.com/mob-sakai/ParticleEffectForUGUI/blob/main/LICENSE.md)  
-![](https://img.shields.io/badge/Unity-2019.3+-57b9d3.svg?style=flat&logo=unity)
+![](https://img.shields.io/badge/Unity-2018.2+-57b9d3.svg?style=flat&logo=unity)
 ![](https://img.shields.io/badge/uGUI_2.0_Ready-57b9d3.svg?style=flat)
 ![](https://img.shields.io/badge/UPR%2FHDPR_Ready-57b9d3.svg?style=flat)  
 ![](https://github.com/mob-sakai/ParticleEffectForUGUI/actions/workflows/test.yml/badge.svg?branch=develop)
@@ -11,7 +11,7 @@
 [![](https://img.shields.io/github/watchers/mob-sakai/ParticleEffectForUGUI.svg?style=social&label=Watch)](https://github.com/mob-sakai/ParticleEffectForUGUI/subscription)
 [![](https://img.shields.io/twitter/follow/mob_sakai.svg?label=Follow&style=social)](https://twitter.com/intent/follow?screen_name=mob_sakai)
 
-<< [📝 Description](#-description-) | [📌 Key Features](#-key-features) | [🎮 Demo](#-demo) | [⚙ Installation](#-installation) | [🔄 Upgrading to 5.x](#-upgrading-from-3x4x-to-5x) | [🚀 Usage](#-usage) | [🛠 Development Note](#-development-note) | [🤝 Contributing](#-contributing) >>
+<< [📝 Description](#-description-) | [📌 Key Features](#-key-features) | [🎮 Demo](#-demo) | [⚙ Installation](#-installation) | [🚀 Usage](#-usage) | [🛠 Development Note](#-development-note) | [🤝 Contributing](#-contributing) >>
 
 ## 📝 Description <!-- omit in toc -->
 
@@ -26,9 +26,7 @@ You can render, mask, and sort your `ParticleSystems` for UI without the need fo
     - [Install via OpenUPM](#install-via-openupm)
     - [Install via UPM (with Package Manager UI)](#install-via-upm-with-package-manager-ui)
     - [Install via UPM (Manually)](#install-via-upm-manually)
-  - [Install as Embedded Package](#install-as-embedded-package)
-- [🔄 Upgrading from v3/v4 to v5](#-upgrading-from-v3v4-to-v5)
-  - [Breaking Changes](#breaking-changes)
+    - [Install as Embedded Package](#install-as-embedded-package)
 - [🚀 Usage](#-usage)
   - [Component: UIParticle](#component-uiparticle)
   - [Basic Usage](#basic-usage)
@@ -106,7 +104,7 @@ You can render, mask, and sort your `ParticleSystems` for UI without the need fo
 
 ## ⚙ Installation
 
-_This package requires **Unity 2019.3 or later**._
+_This package requires **Unity 2018.3 or later**._
 
 #### Install via OpenUPM
 
@@ -118,16 +116,16 @@ _This package requires **Unity 2019.3 or later**._
   ```
 - To update the package, use Package Manager UI (`Window > Package Manager`) or run the following command with `@{version}`:
   ```
-  openupm add com.coffee.ui-particle@5.0.0
+  openupm add com.coffee.ui-particle@4.9.0
   ```
 
 #### Install via UPM (with Package Manager UI)
 
 - Click `Window > Package Manager` to open Package Manager UI.
-- Click `+ > Add package from git URL...` and input the repository URL: `https://github.com/mob-sakai/ParticleEffectForUGUI.git?path=Packages/src`  
+- Click `+ > Add package from git URL...` and input the repository URL: `https://github.com/mob-sakai/ParticleEffectForUGUI.git`  
   ![](https://github.com/user-attachments/assets/f88f47ad-c606-44bd-9e86-ee3f72eac548)
 - To update the package, change suffix `#{version}` to the target version.
-  - e.g. `https://github.com/mob-sakai/ParticleEffectForUGUI.git?path=Packages/src#5.0.0`
+  - e.g. `https://github.com/mob-sakai/ParticleEffectForUGUI.git#4.9.0`
 
 #### Install via UPM (Manually)
 
@@ -135,41 +133,22 @@ _This package requires **Unity 2019.3 or later**._
   ```json
   {
     "dependencies": {
-      "com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git?path=Packages/src",
+      "com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git",
       ...
     }
   }
   ```
 
 - To update the package, change suffix `#{version}` to the target version.
-  - e.g. `"com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git?path=Packages/src#5.0.0",`
+  - e.g. `"com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git#4.9.0",`
 
-### Install as Embedded Package
+#### Install as Embedded Package
 
-1. Download the `Source code (zip)` file from [Releases](https://github.com/mob-sakai/SoftMaskForUGUI/releases) and
-   extract it.
-2. Move the `<extracted_dir>/Packages/src` directory into your project's `Packages` directory.  
-   ![](https://github.com/user-attachments/assets/187cbcbe-5922-4ed5-acec-cf19aa17d208)
-    - You can rename the `src` directory if needed.
-    - If you intend to fix bugs or add features, installing it as an embedded package is recommended.
-    - To update the package, re-download it and replace the existing contents.
-
-<br><br>
-
-## 🔄 Upgrading from v3/v4 to v5
-
-### Breaking Changes
-
-- The default value of `UIParticle.scale` has been changed from `10` to `1`.
-- `UIParticle` no longer inherits from `MaskableGraphic`.
-- If you are installing via git URL, add `?path=Packages/src`.
-   ```json
-   // v3/v4
-   "com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git",
-   
-   // v5
-   "com.coffee.ui-particle": "https://github.com/mob-sakai/ParticleEffectForUGUI.git?path=Packages/src",
-   ```
+1. Download a source code zip file from [Releases](https://github.com/mob-sakai/ParticleEffectForUGUI/releases) and extract it.
+2. Place it in your project's `Packages` directory.  
+   ![](https://github.com/mob-sakai/mob-sakai/assets/12690315/0b7484b4-5fca-43b0-a9ef-e5dbd99bcdb4)
+- If you want to fix bugs or add features, install it as an embedded package.
+- To update the package, you need to re-download it and replace the contents.
 
 <br><br>
 
@@ -179,7 +158,7 @@ _This package requires **Unity 2019.3 or later**._
 
 `UIParticle` controls the ParticleSystems that are attached to its own game objects and child game objects.
 
-![](https://github.com/mob-sakai/ParticleEffectForUGUI/assets/12690315/1cf5753b-33fc-4cef-91c3-413c515a954f)
+![](https://github.com/user-attachments/assets/bc9eb783-afce-4102-ac61-aee9ea8d6f2f)
 
 - **Maskable**: Does this graphic allow maskable.
 - **Scale**: Scale the rendering particles. When the `3D` toggle is enabled, 3D scale (x, y, z) is supported.
@@ -201,6 +180,7 @@ _This package requires **Unity 2019.3 or later**._
   - **UIParticle:** UIParticle.scale will be adjusted.
 - **Use Custom View:** Use this if the particles are not displayed correctly due to min/max particle size.
   - **Custom view size:** Change the bake view size.
+- **Time Scale Multiplier:** Time scale multiplier.
 - **Rendering Order**: The ParticleSystem list to be rendered. You can change the order and the materials.
 
 **NOTE:** Press the `Refresh` button to reconstruct the rendering order based on children ParticleSystem's sorting order
@@ -231,7 +211,7 @@ and z-position.
 If you want to mask particles, set a stencil-supported shader (such as `UI/UIAdditive`) to the material for
 ParticleSystem.
 If you use some custom shaders, see
-the [How to Make a Custom Shader to Support Mask/RectMask2D Component](#how-to-make-a-custom-shader-to-support-maskrectmask2d-component)
+the [How to Make a Custom Shader to Support Mask/RectMask2D Component](#how-to-make-a-custom-shader-to-support-mask-and-rectmask2d-component)
 section.
 
 ![](https://user-images.githubusercontent.com/12690315/95017591-3b512700-0695-11eb-864e-04166ea1809a.png)

Packages/src/Runtime/Internal/Extensions/ComponentExtensions.cs

@@ -204,7 +204,7 @@ namespace Coffee.UIParticleInternal
             target.enabled = false;
 
             // Find MonoScript of the specified component.
-            foreach (var script in Resources.FindObjectsOfTypeAll<MonoScript>())
+            foreach (var script in MonoImporter.GetAllRuntimeMonoScripts())
             {
                 if (script.GetClass() != typeof(T))
                 {

Packages/src/Runtime/Internal/Utilities/Misc.cs

@@ -3,11 +3,16 @@ using System.Diagnostics;
 using UnityEditor;
 using UnityEngine;
 using Object = UnityEngine.Object;
-#if UNITY_EDITOR && UNITY_2021_2_OR_NEWER
+#if UNITY_EDITOR
+using System.IO;
+using System.Linq;
+using System.Reflection;
+#if UNITY_2021_2_OR_NEWER
 using UnityEditor.SceneManagement;
-#elif UNITY_EDITOR
+#else
 using UnityEditor.Experimental.SceneManagement;
 #endif
+#endif
 
 namespace Coffee.UIParticleInternal
 {
@@ -72,5 +77,56 @@ namespace Coffee.UIParticleInternal
 
         public static bool isBatchOrBuilding => Application.isBatchMode || BuildPipeline.isBuildingPlayer;
 #endif
+
+        [Conditional("UNITY_EDITOR")]
+        public static void QueuePlayerLoopUpdate()
+        {
+#if UNITY_EDITOR
+            if (!EditorApplication.isPlaying)
+            {
+                EditorApplication.QueuePlayerLoopUpdate();
+            }
+#endif
+        }
     }
+
+#if !UNITY_2021_2_OR_NEWER
+    [AttributeUsage(AttributeTargets.Class)]
+    [Conditional("UNITY_EDITOR")]
+    internal class IconAttribute : Attribute
+    {
+        private readonly string _path;
+
+        public IconAttribute(string path)
+        {
+            _path = path;
+        }
+
+#if UNITY_EDITOR
+        private static Action<Object, Texture2D> s_SetIconForObject = typeof(EditorGUIUtility)
+            .GetMethod("SetIconForObject", BindingFlags.Static | BindingFlags.NonPublic)
+            .CreateDelegate(typeof(Action<Object, Texture2D>), null) as Action<Object, Texture2D>;
+
+        [InitializeOnLoadMethod]
+        private static void InitializeOnLoadMethod()
+        {
+            if (Misc.isBatchOrBuilding) return;
+
+            var types = TypeCache.GetTypesWithAttribute<IconAttribute>();
+            var scripts = MonoImporter.GetAllRuntimeMonoScripts();
+            foreach (var type in types)
+            {
+                var script = scripts.FirstOrDefault(x => x.GetClass() == type);
+                if (!script) continue;
+
+                var path = type.GetCustomAttribute<IconAttribute>()?._path;
+                var icon = AssetDatabase.LoadAssetAtPath<Texture2D>(path);
+                if (!icon) continue;
+
+                s_SetIconForObject(script, icon);
+            }
+        }
+#endif
+    }
+#endif
 }

Packages/src/Runtime/UIParticle.cs

@@ -3,12 +3,13 @@ using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using Coffee.UIParticleInternal;
 using UnityEngine;
-using UnityEngine.EventSystems;
 using UnityEngine.Rendering;
 using UnityEngine.Serialization;
+using UnityEngine.UI;
 using Random = UnityEngine.Random;
 
 [assembly: InternalsVisibleTo("Coffee.UIParticle.Editor")]
+[assembly: InternalsVisibleTo("Coffee.UIParticle.Editor.Tests")]
 [assembly: InternalsVisibleTo("Coffee.UIParticle.PerformanceDemo")]
 [assembly: InternalsVisibleTo("Coffee.UIParticle.Demo")]
 
@@ -17,10 +18,11 @@ namespace Coffee.UIExtensions
     /// <summary>
     /// Render maskable and sortable particle effect ,without Camera, RenderTexture or Canvas.
     /// </summary>
+    [Icon("Packages/com.coffee.ui-particle/Editor/UIParticleIcon.png")]
     [ExecuteAlways]
     [RequireComponent(typeof(RectTransform))]
     [RequireComponent(typeof(CanvasRenderer))]
-    public class UIParticle : UIBehaviour, ISerializationCallbackReceiver
+    public class UIParticle : MaskableGraphic, ISerializationCallbackReceiver
     {
         public enum AutoScalingMode
         {
@@ -62,7 +64,7 @@ namespace Coffee.UIExtensions
 
         [Tooltip("Scale the rendering particles. When the `3D` toggle is enabled, 3D scale (x, y, z) is supported.")]
         [SerializeField]
-        private Vector3 m_Scale3D = new Vector3(1, 1, 1);
+        private Vector3 m_Scale3D = new Vector3(10, 10, 10);
 
         [Tooltip("If you want to update material properties (e.g. _MainTex_ST, _Color) in AnimationClip, " +
                  "use this to mark as animatable.")]
@@ -120,47 +122,23 @@ namespace Coffee.UIExtensions
         private float m_CustomViewSize = 10;
 
         [SerializeField]
-        private bool m_Maskable = true;
+        [Tooltip("Time scale multiplier.")]
+        private float m_TimeScaleMultiplier = 1;
 
         private readonly List<UIParticleRenderer> _renderers = new List<UIParticleRenderer>();
         private Camera _bakeCamera;
-        private Canvas _canvas;
         private int _groupId;
         private bool _isScaleStored;
         private Vector3 _storedScale;
         private DrivenRectTransformTracker _tracker;
 
-        public RectTransform rectTransform => transform as RectTransform;
-
-        public Canvas canvas
-        {
-            get
-            {
-                if (_canvas) return _canvas;
-
-                var tr = transform;
-                while (tr && !_canvas)
-                {
-                    if (tr.TryGetComponent(out _canvas)) return _canvas;
-                    tr = tr.parent;
-                }
-
-                return null;
-            }
-        }
-
         /// <summary>
-        /// Does this graphic allow masking.
+        /// Should this graphic be considered a target for ray-casting?
         /// </summary>
-        public bool maskable
+        public override bool raycastTarget
         {
-            get => m_Maskable;
-            set
-            {
-                if (value == m_Maskable) return;
-                m_Maskable = value;
-                UpdateRendererMaterial();
-            }
+            get => false;
+            set { }
         }
 
         /// <summary>
@@ -285,6 +263,15 @@ namespace Coffee.UIExtensions
             set => m_CustomViewSize = Mathf.Max(0.1f, value);
         }
 
+        /// <summary>
+        /// Time scale multiplier.
+        /// </summary>
+        public float timeScaleMultiplier
+        {
+            get => m_TimeScaleMultiplier;
+            set => m_TimeScaleMultiplier = value;
+        }
+
         internal bool useMeshSharing => m_MeshSharing != MeshSharing.None;
 
         internal bool isPrimary =>
@@ -337,15 +324,15 @@ namespace Coffee.UIExtensions
 
         public Vector3 parentScale { get; private set; }
 
-        private Vector3 canvasScale { get; set; }
+        public Vector3 canvasScale { get; private set; }
 
         protected override void OnEnable()
         {
             _isScaleStored = false;
             ResetGroupId();
             UIParticleUpdater.Register(this);
+            RegisterDirtyMaterialCallback(UpdateRendererMaterial);
 
-            //
             if (0 < particles.Count)
             {
                 RefreshParticles(particles);
@@ -355,7 +342,7 @@ namespace Coffee.UIExtensions
                 RefreshParticles();
             }
 
-            UpdateRendererMaterial();
+            base.OnEnable();
         }
 
         /// <summary>
@@ -372,15 +359,9 @@ namespace Coffee.UIExtensions
             _isScaleStored = false;
             UIParticleUpdater.Unregister(this);
             _renderers.ForEach(r => r.Reset());
-            _canvas = null;
-        }
+            UnregisterDirtyMaterialCallback(UpdateRendererMaterial);
 
-        /// <summary>
-        /// Called when the state of the parent Canvas is changed.
-        /// </summary>
-        protected override void OnCanvasHierarchyChanged()
-        {
-            _canvas = null;
+            base.OnDisable();
         }
 
         /// <summary>
@@ -390,14 +371,6 @@ namespace Coffee.UIExtensions
         {
         }
 
-        /// <summary>
-        /// This function is called when a direct or indirect parent of the transform of the GameObject has changed.
-        /// </summary>
-        protected override void OnTransformParentChanged()
-        {
-            _canvas = null;
-        }
-
         void ISerializationCallbackReceiver.OnBeforeSerialize()
         {
         }
@@ -692,6 +665,17 @@ namespace Coffee.UIExtensions
                 : Random.Range(m_GroupId, m_GroupMaxId + 1);
         }
 
+        protected override void UpdateMaterial()
+        {
+        }
+
+        /// <summary>
+        /// Call to update the geometry of the Graphic onto the CanvasRenderer.
+        /// </summary>
+        protected override void UpdateGeometry()
+        {
+        }
+
         private void UpdateRendererMaterial()
         {
             for (var i = 0; i < _renderers.Count; i++)

Packages/src/Runtime/UIParticle.cs.meta

@@ -5,7 +5,7 @@ MonoImporter:
   serializedVersion: 2
   defaultReferences: []
   executionOrder: 0
-  icon: {fileID: 2800000, guid: 5f0675613942149309588d556e33d990, type: 3}
+  icon: {instanceID: 0}
   userData: 
   assetBundleName: 
   assetBundleVariant: 

Packages/src/Runtime/UIParticleRenderer.cs

@@ -15,6 +15,7 @@ using UnityEngine.UI;
 
 namespace Coffee.UIExtensions
 {
+    [Icon("Packages/com.coffee.ui-particle/Editor/UIParticleIcon.png")]
     [ExecuteAlways]
     [RequireComponent(typeof(RectTransform))]
     [RequireComponent(typeof(CanvasRenderer))]
@@ -282,10 +283,6 @@ namespace Coffee.UIExtensions
                 || !transform.lossyScale.GetScaled(_parent.scale3DForCalc).IsVisible() // Scale is not visible.
                 || (!_particleSystem.IsAlive() && !_particleSystem.isPlaying) // No particle.
                 || (_isTrail && !_particleSystem.trails.enabled) // Trail, but it is not enabled.
-#if UNITY_2018_3_OR_NEWER
-                || canvasRenderer.GetInheritedAlpha() <
-                0.01f // #102: Do not bake particle system to mesh when the alpha is zero.
-#endif
             )
             {
                 Profiler.BeginSample("[UIParticleRenderer] Clear Mesh");
@@ -314,6 +311,13 @@ namespace Coffee.UIExtensions
 #endif
                 {
                     ResolveResolutionChange(psPos, scale);
+
+                    // fix: second and subsequent bursts not displayed when world simulation and non-looping. (#326)
+                    if (!_particleSystem.IsLocalSpace() && !main.loop && _particleSystem.time == 0)
+                    {
+                        _delay = true;
+                    }
+
                     Simulate(scale, _parent.isPaused || _delay);
 
                     if (_delay && !_parent.isPaused)
@@ -628,6 +632,7 @@ namespace Coffee.UIExtensions
                 : main.useUnscaledTime
                     ? Time.unscaledDeltaTime
                     : Time.deltaTime;
+            deltaTime *= _parent.timeScaleMultiplier;
 
             // Pre-warm:
             if (0 < deltaTime && _preWarm)

Packages/src/Runtime/UIParticleRenderer.cs.meta

@@ -5,7 +5,7 @@ MonoImporter:
   serializedVersion: 2
   defaultReferences: []
   executionOrder: 0
-  icon: {fileID: 2800000, guid: 5f0675613942149309588d556e33d990, type: 3}
+  icon: {instanceID: 0}
   userData: 
   assetBundleName: 
   assetBundleVariant: 

Packages/src/Runtime/UIParticleUpdater.cs

@@ -40,13 +40,26 @@ namespace Coffee.UIExtensions
 
 #if UNITY_EDITOR
         [InitializeOnLoadMethod]
+        private static void InitializeOnLoad()
+        {
+            UIExtraCallbacks.onAfterCanvasRebuild += Refresh;
+
+            EditorApplication.playModeStateChanged += state =>
+            {
+                UIExtraCallbacks.onAfterCanvasRebuild -= Refresh;
+                if (state == PlayModeStateChange.EnteredEditMode || state == PlayModeStateChange.EnteredPlayMode)
+                {
+                    UIExtraCallbacks.onAfterCanvasRebuild += Refresh;
+                }
+            };
+        }
 #else
         [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
-#endif
         private static void InitializeOnLoad()
         {
             UIExtraCallbacks.onAfterCanvasRebuild += Refresh;
         }
+#endif
 
         private static void Refresh()
         {

Packages/src/Runtime/Utilities/ParticleSystemExtensions.cs

@@ -13,11 +13,7 @@ namespace Coffee.UIParticleInternal
         {
             if (s_TmpParticles.Length < size)
             {
-                while (s_TmpParticles.Length < size)
-                {
-                    size = Mathf.NextPowerOfTwo(size);
-                }
-
+                size = Mathf.NextPowerOfTwo(size);
                 s_TmpParticles = new ParticleSystem.Particle[size];
             }
 
@@ -187,7 +183,11 @@ namespace Coffee.UIParticleInternal
 
         public static bool IsSubEmitterOf(this ParticleSystem self, ParticleSystem parent)
         {
+            if (!self || !parent) return false;
+
             var subEmitters = parent.subEmitters;
+            if (!subEmitters.enabled) return false; // No sub emitters.
+
             var count = subEmitters.subEmittersCount;
             for (var i = 0; i < count; i++)
             {

Packages/src/package.json

@@ -2,8 +2,8 @@
   "name": "com.coffee.ui-particle",
   "displayName": "UI Particle",
   "description": "This package provides a component to render particle effects for uGUI.\nThe particle rendering is maskable and sortable, without the need for an extra Camera, RenderTexture, or Canvas.",
-  "version": "5.0.0-preview.13",
-  "unity": "2019.3",
+  "version": "4.11.4",
+  "unity": "2018.2",
   "license": "MIT",
   "repository": {
     "type": "git",