chore(release): 4.1.3 [skip ci]

## [4.1.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.2...4.1.3) (2022-06-28)

### Bug Fixes

* error on drag prefab to scene ([fa2f867](fa2f867bca)), closes [#211](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/211)

CHANGELOG.md

@@ -1,3 +1,32 @@
+## [4.1.3](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.2...4.1.3) (2022-06-28)
+
+
+### Bug Fixes
+
+* error on drag prefab to scene ([fa2f867](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/fa2f867bcaff437bb9420da1abcef970cdb09ade)), closes [#211](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/211)
+
+## [4.1.2](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.1...4.1.2) (2022-06-27)
+
+
+### Bug Fixes
+
+* error on editor ([8034228](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/80342287137c07d58a7492875a401d80cb134073)), closes [#210](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/210)
+* incorrect position of world space trail particles ([fb7f308](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/fb7f308f092db8a1512383857b80110cd626ecf9)), closes [#209](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/209)
+
+## [4.1.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.1.0...4.1.1) (2022-06-25)
+
+
+### Bug Fixes
+
+* add absolute mode toggle to overlay window ([48d1994](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/48d1994f5f8751b707b6ef7695b552df731bece9))
+
+# [4.1.0](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.0.1...4.1.0) (2022-06-25)
+
+
+### Features
+
+* add relative/absolute particle position mode ([1879ac8](https://github.com/mob-sakai/ParticleEffectForUGUI/commit/1879ac8c538778e386e68cfc989a6f4f974043ca)), closes [#205](https://github.com/mob-sakai/ParticleEffectForUGUI/issues/205)
+
 ## [4.0.1](https://github.com/mob-sakai/ParticleEffectForUGUI/compare/4.0.0...4.0.1) (2022-06-24)
 
 

README.md

@@ -65,8 +65,10 @@ Compares this "Baking mesh" approach with the conventional approach:
 * [4.0.0+] Adaptive scaling for UI
 * [4.0.0+] Mesh sharing group to improve performance  
 ![](https://user-images.githubusercontent.com/12690315/174311048-c882df81-6c34-4eba-b0aa-5645457692f1.gif)
-* [4.0.0+] particle attractor component  
+* [4.0.0+] Particle attractor component  
 ![](https://user-images.githubusercontent.com/12690315/174311027-462929a4-13f0-4ec4-86ea-9c832f2eecf1.gif)
+* [4.1.0+] Relative/Absolute particle position mode  
+![](https://user-images.githubusercontent.com/12690315/175751579-5a2357e8-2ecf-4afd-83c8-66e9771bde39.gif)
 
 
 <br><br><br><br>
@@ -168,6 +170,7 @@ Unity 2018.2 supports embedded packages.
 | Scale | Scale the rendering.<br>When the `3D` toggle is enabled, 3D scale (x,y,z) is supported. |
 | Animatable Properties | If you want update material properties (e.g. `_MainTex_ST`, `_Color`) in AnimationClip, use this to mark the changes. |
 | Mesh Sharing | Particle simulation results are shared within the same group.<br>A large number of the same effects can be displayed with a small load.<br>When the `Random` toggle is enabled, it will be grouped randomaly. |
+| Absolute Mode | The particles will be emitted at the ParticleSystem position.<br>Move the UIParticle/ParticleSystem to move the particle. |
 | Rendering Order | The ParticleSystems to be rendered.<br>You can change the rendering order and the materials. |
 
 NOTE: Press `Refresh` button to reconstruct rendering order based on children ParticleSystem's sorting order and z position.

Samples~/Demo/Materials/UIParticle_Demo_Dot.mat

@@ -0,0 +1,84 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
+Material:
+  serializedVersion: 6
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: UIParticle_Demo_Dot
+  m_Shader: {fileID: 10770, guid: 0000000000000000f000000000000000, type: 0}
+  m_ShaderKeywords: 
+  m_LightmapFlags: 4
+  m_EnableInstancingVariants: 0
+  m_DoubleSidedGI: 0
+  m_CustomRenderQueue: 3001
+  stringTagMap: {}
+  disabledShaderPasses: []
+  m_SavedProperties:
+    serializedVersion: 3
+    m_TexEnvs:
+    - _BumpMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailAlbedoMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailMask:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _DetailNormalMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _EmissionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MainTex:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _MetallicGlossMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _OcclusionMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    - _ParallaxMap:
+        m_Texture: {fileID: 0}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
+    m_Floats:
+    - _BumpScale: 1
+    - _ColorMask: 15
+    - _Cutoff: 0.5
+    - _DetailNormalMapScale: 1
+    - _DstBlend: 0
+    - _GlossMapScale: 1
+    - _Glossiness: 0.5
+    - _GlossyReflections: 1
+    - _Metallic: 0
+    - _Mode: 0
+    - _OcclusionStrength: 1
+    - _Parallax: 0.02
+    - _SmoothnessTextureChannel: 0
+    - _SpecularHighlights: 1
+    - _SrcBlend: 1
+    - _Stencil: 0
+    - _StencilComp: 8
+    - _StencilOp: 0
+    - _StencilReadMask: 255
+    - _StencilWriteMask: 255
+    - _UVSec: 0
+    - _UseUIAlphaClip: 0
+    - _ZWrite: 1
+    m_Colors:
+    - _Color: {r: 1, g: 1, b: 1, a: 1}
+    - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}

Samples~/Demo/Materials/UIParticle_Demo_Dot.mat.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: b35a584a784274746b87deef91c15c5c
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 2100000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Samples~/Demo/Scripts/UIElementDragger.cs

@@ -14,6 +14,7 @@ public class UIElementDragger : MonoBehaviour, IBeginDragHandler, IDragHandler,
     private Canvas canvas;
     public Target m_Target;
     public Transform m_CustomTarget;
+    public bool ex2;
 
     private void OnEnable()
     {
@@ -37,6 +38,8 @@ public class UIElementDragger : MonoBehaviour, IBeginDragHandler, IDragHandler,
                 rectTransform.localPosition += delta;
                 if (m_CustomTarget)
                 {
+                    if (ex2)
+                        delta.Scale(canvas.rootCanvas.transform.localScale);
                     m_CustomTarget.localPosition += delta;
                 }
                 break;

Scripts/Editor/UIParticleEditor.cs

@@ -62,6 +62,7 @@ namespace Coffee.UIExtensions
         private SerializedProperty m_MeshSharing;
         private SerializedProperty m_GroupId;
         private SerializedProperty m_GroupMaxId;
+        private SerializedProperty m_AbsoluteMode;
 
 
         private ReorderableList _ro;
@@ -150,6 +151,7 @@ namespace Coffee.UIExtensions
             m_MeshSharing = serializedObject.FindProperty("m_MeshSharing");
             m_GroupId = serializedObject.FindProperty("m_GroupId");
             m_GroupMaxId = serializedObject.FindProperty("m_GroupMaxId");
+            m_AbsoluteMode = serializedObject.FindProperty("m_AbsoluteMode");
 
             var sp = serializedObject.FindProperty("m_Particles");
             _ro = new ReorderableList(sp.serializedObject, sp, true, true, true, true);
@@ -202,12 +204,10 @@ namespace Coffee.UIExtensions
             };
 
             // On select UIParticle, refresh particles.
-            if (!Application.isPlaying)
+            foreach (UIParticle t in targets)
             {
-                foreach (UIParticle t in targets)
-                {
-                    t.RefreshParticles(t.particles);
-                }
+                if (Application.isPlaying || PrefabUtility.GetPrefabAssetType(t) != PrefabAssetType.NotAPrefab) continue;
+                t.RefreshParticles(t.particles);
             }
         }
 
@@ -265,6 +265,9 @@ namespace Coffee.UIExtensions
                 }
             }
 
+            // Absolute Mode
+            EditorGUILayout.PropertyField(m_AbsoluteMode);
+
             // Target ParticleSystems.
             _ro.DoLayoutList();
 
@@ -427,12 +430,14 @@ namespace Coffee.UIExtensions
                 if (s_SerializedObject.targetObjects.Any(x => !x)) return;
 
                 s_SerializedObject.Update();
-                GUILayout.BeginHorizontal(GUILayout.Width(220f));
-                var labelWidth = EditorGUIUtility.labelWidth;
-                EditorGUIUtility.labelWidth = 60;
-                _xyzMode = DrawFloatOrVector3Field(s_SerializedObject.FindProperty("m_Scale3D"), _xyzMode);
-                EditorGUIUtility.labelWidth = labelWidth;
-                GUILayout.EndHorizontal();
+                using (new EditorGUILayout.VerticalScope(GUILayout.Width(220f)))
+                {
+                    var labelWidth = EditorGUIUtility.labelWidth;
+                    EditorGUIUtility.labelWidth = 100;
+                    _xyzMode = DrawFloatOrVector3Field(s_SerializedObject.FindProperty("m_Scale3D"), _xyzMode);
+                    EditorGUILayout.PropertyField(s_SerializedObject.FindProperty("m_AbsoluteMode"));
+                    EditorGUIUtility.labelWidth = labelWidth;
+                }
                 s_SerializedObject.ApplyModifiedProperties();
             }
             catch

Scripts/UIParticle.cs

@@ -54,6 +54,10 @@ namespace Coffee.UIExtensions
         [SerializeField]
         private int m_GroupMaxId = 0;
 
+        [SerializeField]
+        [Tooltip("The particles will be emitted at the ParticleSystem position.\nMove the UIParticle/ParticleSystem to move the particle.")]
+        private bool m_AbsoluteMode = false;
+
         private List<UIParticleRenderer> m_Renderers = new List<UIParticleRenderer>();
 
 #if !SERIALIZE_FIELD_MASKABLE
@@ -112,6 +116,17 @@ namespace Coffee.UIExtensions
             }
         }
 
+        /// <summary>
+        /// Absolute particle position mode.
+        /// The particles will be emitted at the ParticleSystem position.
+        /// Move the UIParticle/ParticleSystem to move the particle.
+        /// </summary>
+        public bool absoluteMode
+        {
+            get { return m_AbsoluteMode; }
+            set { m_AbsoluteMode = value; }
+        }
+
         internal bool useMeshSharing
         {
             get { return m_MeshSharing != MeshSharing.None; }

Scripts/UIParticleRenderer.cs

@@ -249,7 +249,15 @@ namespace Coffee.UIExtensions
             Profiler.BeginSample("[UIParticleRenderer] Combine Mesh");
             if (_parent.canSimulate)
             {
-                s_CombineInstances[0].transform = canvasRenderer.transform.worldToLocalMatrix * GetWorldMatrix(psPos, scale);
+                if (_parent.absoluteMode)
+                {
+                    s_CombineInstances[0].transform = canvasRenderer.transform.worldToLocalMatrix * GetWorldMatrix(psPos, scale);
+                }
+                else
+                {
+                    var diff = _particleSystem.transform.position - _parent.transform.position;
+                    s_CombineInstances[0].transform = canvasRenderer.transform.worldToLocalMatrix * Matrix4x4.Translate(diff.GetScaled(scale - Vector3.one)) * GetWorldMatrix(psPos, scale);
+                }
                 workerMesh.CombineMeshes(s_CombineInstances, true, true);
 
                 workerMesh.RecalculateBounds();
@@ -453,14 +461,6 @@ namespace Coffee.UIExtensions
                 _prewarm = false;
             }
 
-            // Normal simulation for non-scaling or local spacing.
-            var isScaling = scale != Vector3.one;
-            if (!isScaling || _particleSystem.GetActualSimulationSpace() == ParticleSystemSimulationSpace.Local)
-            {
-                _particleSystem.Simulate(deltaTime, false, false, false);
-                return;
-            }
-
             // Emitted particles found. 
             if (_prevParticleCount != _particleSystem.particleCount)
             {

Scripts/UIParticleUpdater.cs

@@ -62,7 +62,7 @@ namespace Coffee.UIExtensions
             for (var i = 0; i < s_ActiveParticles.Count; i++)
             {
                 var uip = s_ActiveParticles[i];
-                if (!uip.isPrimary || s_UpdatedGroupIds.Contains(uip.groupId)) continue;
+                if (!uip || !uip.canvas || !uip.isPrimary || s_UpdatedGroupIds.Contains(uip.groupId)) continue;
 
                 s_UpdatedGroupIds.Add(uip.groupId);
                 uip.UpdateTransformScale();
@@ -73,6 +73,8 @@ namespace Coffee.UIExtensions
             for (var i = 0; i < s_ActiveParticles.Count; i++)
             {
                 var uip = s_ActiveParticles[i];
+                if (!uip || !uip.canvas) continue;
+
                 uip.UpdateTransformScale();
 
                 if (!uip.useMeshSharing)
@@ -97,7 +99,10 @@ namespace Coffee.UIExtensions
             // UpdateParticleCount.
             for (var i = 0; i < s_ActiveParticles.Count; i++)
             {
-                s_ActiveParticles[i].UpdateParticleCount();
+                var uip = s_ActiveParticles[i];
+                if (!uip || !uip.canvas) continue;
+
+                uip.UpdateParticleCount();
             }
         }
 

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": "4.0.1",
+  "version": "4.1.3",
   "unity": "2018.2",
   "license": "MIT",
   "repository": {