Unity-Technologies · julianunity · Nov 21, 2025 · Nov 21, 2025 · Nov 24, 2025 · Nov 24, 2025
diff --git a/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/LoadingBarUI.cs b/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/LoadingBarUI.cs
@@ -0,0 +1,24 @@
+using UnityEngine;
+using UnityEngine.UIElements;
+
+namespace ContentManagement.Sample
+{
+    public class LoadingBarUI : MonoBehaviour
+    {
+        private ProgressBar m_ProgressBar;
+        public ProgressBar ProgressBar
+        {
+            get
+            {
+                if (m_ProgressBar == null)
+                {
+                    var document = GetComponent<UIDocument>();
+                    var root = document.rootVisualElement;
+                    m_ProgressBar = root.Query<ProgressBar>("progress-bar");
+                }
+
+                return m_ProgressBar;
+            }
+        }
+    }
+}
diff --git a/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/LoadingBarUI.cs.meta b/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/LoadingBarUI.cs.meta
diff --git a/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/LoadingRemoteCatalogSystem.cs b/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/LoadingRemoteCatalogSystem.cs
@@ -19,16 +19,6 @@ public void OnCreate(ref SystemState state)
             state.RequireForUpdate<RemoteContent>();
             state.RequireForUpdate<HighLowWeakScene>();
             initialized = false;
-            ContentDeliveryGlobalState.RegisterForContentUpdateCompletion(UpdateStateCallback);
-        }
-
-        private void UpdateStateCallback(ContentDeliveryGlobalState.ContentUpdateState contentUpdateState)
-        {
-            Debug.Log($"<color=green>Content Delivery Global State:</color> {contentUpdateState}");
-            if (contentUpdateState >= ContentDeliveryGlobalState.ContentUpdateState.ContentReady)
-            {
-                // Track the state of your content and set when your content is ready to use
-            }
         }
 
         public void OnUpdate(ref SystemState state)

diff --git a/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/UpdateLoadingBarSystem.cs b/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/UpdateLoadingBarSystem.cs
@@ -0,0 +1,65 @@
+using UnityEngine;
+using Unity.Entities;
+using Unity.Mathematics;
+using UnityEngine.UIElements;
+using Unity.Entities.Content;
+
+namespace ContentManagement.Sample
+{
+    [UpdateBefore(typeof(LoadingRemoteCatalogSystem))]
+    public partial class UpdateLoadingBarSystem : SystemBase
+    {
+        private ProgressBar m_ProgressBar;
+        private bool isInitialized;
+
+        protected override void OnCreate()
+        {
+            isInitialized = false;
+            RequireForUpdate<HighLowWeakScene>();
+        }
+
+        protected override void OnUpdate()
+        {
+#region InitializingUI
+            if (!isInitialized)
+            {
+                var progressBarUI = Object.FindAnyObjectByType<LoadingBarUI>();
+                if (progressBarUI == null)
+                    return;
+
+                isInitialized = true;
+                m_ProgressBar = progressBarUI.ProgressBar;
+                m_ProgressBar.style.display = DisplayStyle.Flex;    
+            }
+#endregion
+
+#region ReadingLoadedBytesFromContentManagementAPI
+            // Displays the loading bar used during the following loading and download steps:
+            // - DownloadingCatalogInfo
+            // - DownloadingCatalogs (catalog.bin)
+            // - DownloadingLocalCatalogs (catalog.bin from StreamingAssets)
+            // - DownloadingContentSet (artifacts folders/files)
+            if (ContentDeliveryGlobalState.CurrentContentUpdateState < ContentDeliveryGlobalState.ContentUpdateState.ContentReady)
+            {
+                if (ContentDeliveryGlobalState.DeliveryService != null && ContentDeliveryGlobalState.DeliveryService.DownloadServices != null)
+                {
+                    foreach (var downloadService in ContentDeliveryGlobalState.DeliveryService.DownloadServices)
+                    {
+                        if(downloadService.TotalBytes <= 0)
+                            continue;
+
+                        float progress = (float) downloadService.TotalDownloadedBytes / downloadService.TotalBytes; 
+                        float normalizedProgress = math.clamp(progress, 0f, 1f);
+                        m_ProgressBar.value = normalizedProgress;
+                        m_ProgressBar.title = $"[{ContentDeliveryGlobalState.CurrentContentUpdateState}]: {downloadService.Name} - {normalizedProgress*100}% ";
+                    }    
+                }
+            }
+            else
+            {
+                m_ProgressBar.style.display = DisplayStyle.None;
+            }
+#endregion
+        }
+    }
+}
diff --git a/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/UpdateLoadingBarSystem.cs.meta b/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/UpdateLoadingBarSystem.cs.meta
diff --git a/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/WeakSceneLoading.unity b/Dots101/ContentManagement101/Assets/2. WeakSceneLoading/WeakSceneLoading.unity
@@ -5331,6 +5331,7 @@ GameObject:
   m_Component:
   - component: {fileID: 1865683012}
   - component: {fileID: 1865683011}
+  - component: {fileID: 1865683013}
   m_Layer: 0
   m_Name: UI
   m_TagString: Untagged
@@ -5377,6 +5378,18 @@ Transform:
   m_Children: []
   m_Father: {fileID: 0}
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!114 &1865683013
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1865683010}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 8f60424fd5439c64abe7ddfd4277b99d, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: Assembly-CSharp::LoadingBarUI
 --- !u!1660057539 &9223372036854775807
 SceneRoots:
   m_ObjectHideFlags: 0

diff --git a/Dots101/ContentManagement101/Assets/Art/UI/SceneLoadingInstructions.uxml b/Dots101/ContentManagement101/Assets/Art/UI/SceneLoadingInstructions.uxml
@@ -6,4 +6,7 @@
         <engine:Label text="Follow these step-by-step instructions to understand how this scene works:&#10;&#10;&lt;b&gt;&lt;color=magenta&gt;1.&lt;/color&gt;&lt;/b&gt; Search &lt;b&gt;&lt;color=#A4A449&gt;WeakSceneList&lt;/color&gt;&lt;/b&gt; for more details &#10;   about how to make the content.&#10;&lt;b&gt;&lt;color=magenta&gt;2.&lt;/color&gt;&lt;/b&gt; Check &lt;b&gt;&lt;color=#A4A449&gt;WeakSceneAuthoring&lt;/color&gt;&lt;/b&gt; or&#10;   &lt;b&gt;&lt;color=#A4A449&gt;WeakSceneLoading System&lt;/color&gt;&lt;/b&gt; to inspect how &#10;   to assign references to an entity.&#10;&lt;b&gt;&lt;color=magenta&gt;3.&lt;/color&gt;&lt;/b&gt; Switch to &lt;b&gt;&lt;color=#A4A449&gt;[Platform] WeakSceneLoading &#10;   profile&lt;/color&gt;&lt;/b&gt; before building the player. " style="-unity-font-definition: url(&quot;project://database/Assets/Art/Fonts/ShareTechMono-Regular/ShareTechMono-Regular.ttf?fileID=12800000&amp;guid=ba952712555b503458be5a0ebcad7e60&amp;type=3#ShareTechMono-Regular&quot;); color: rgb(255, 255, 255); font-size: 20px; white-space: pre-wrap; width: 530px; padding-bottom: 12px; margin-bottom: 10px; border-bottom-width: 1px; border-bottom-color: rgba(133, 133, 133, 0.5);" />
         <engine:Label text="&lt;b&gt;&lt;color=#A4A449&gt;Note:&lt;/color&gt;&lt;/b&gt; Content management relies on subscenes to bake content references into entities. You’ll find scenes that contain only subscenes; this pattern allows for direct scene loading without runtime entity creation, as everything is pre-built during content catalog export." style="-unity-font-definition: url(&quot;project://database/Assets/Art/Fonts/ShareTechMono-Regular/ShareTechMono-Regular.ttf?fileID=12800000&amp;guid=ba952712555b503458be5a0ebcad7e60&amp;type=3#ShareTechMono-Regular&quot;); color: rgb(255, 255, 255); font-size: 20px; white-space: pre-wrap; width: 518px;" />
     </engine:VisualElement>
+    <engine:VisualElement style="flex-grow: 1; justify-content: center; flex-direction: row;">
+        <engine:ProgressBar value="0" high-value="1" name="progress-bar" style="width: 500px; align-self: center; display: none;" />
+    </engine:VisualElement>
 </engine:UXML>
diff --git a/Dots101/ContentManagement101/Assets/Art/UI/Style.uss b/Dots101/ContentManagement101/Assets/Art/UI/Style.uss
@@ -7,6 +7,45 @@
     -unity-text-align: upper-center;
 }
 
+.unity-progress-bar__title {
+    -unity-font-definition: url("project://database/Assets/Art/Fonts/ShareTechMono-Regular/ShareTechMono-Regular.ttf?fileID=12800000&guid=ba952712555b503458be5a0ebcad7e60&type=3#ShareTechMono-Regular");
+    font-size: 18px;
+    top: -10px;
+    -unity-font-style: bold;
+    color: rgb(164, 164, 73);
+    text-shadow: 2px 2px 0 rgba(255, 1, 86, 0.47);
+    -unity-text-align: upper-center;
+}
+
+.unity-progress-bar__background {
+    background-color: rgb(51, 51, 51);
+    border-left-color: rgb(0, 254, 254);
+    border-right-color: rgb(0, 254, 254);
+    border-top-color: rgb(0, 254, 254);
+    border-bottom-color: rgb(0, 254, 254);
+    border-top-width: 1px;
+    border-right-width: 1px;
+    border-bottom-width: 1px;
+    border-left-width: 1px;
+    border-top-left-radius: 2px;
+    border-top-right-radius: 2px;
+    border-bottom-right-radius: 2px;
+    border-bottom-left-radius: 2px;
+}
+
+.unity-progress-bar__progress {
+    background-color: rgb(65, 65, 65);
+    border-bottom-width: 1px;
+    border-bottom-color: rgb(0, 254, 254);
+    border-right-color: rgb(255, 255, 0);
+    border-right-width: 1px;
+    border-top-color: rgb(255, 0, 255);
+    border-top-width: 1px;
+    border-left-color: rgb(255, 255, 0);
+    border-left-width: 1px;
+    border-top-left-radius: 0;
+}
+
 .container {
     width: 30%;
     position: absolute;
@@ -44,7 +83,7 @@
 }
 
 .hover {
-    cursor: url("project://database/Assets/Art/Texture/pointer.png?fileID=2800000&guid=53954a4289b154ebdaf8f055996168eb&type=3#pointer");
+    cursor: url("project://database/Assets/Art/Texture/pointer.png?fileID=2800000&guid=7e6c249b1dae14f918e70b7fd01d98c1&type=3#pointer");
     border-left-color: rgba(0, 0, 0, 0.5);
     border-right-color: rgba(0, 0, 0, 0.5);
     border-top-color: rgba(0, 0, 0, 0.5);
@@ -57,7 +96,7 @@
 }
 
 .button:hover {
-    cursor: url("project://database/Assets/Art/Texture/pointer.png?fileID=2800000&guid=53954a4289b154ebdaf8f055996168eb&type=3#pointer");
+    cursor: url("project://database/Assets/Art/Texture/pointer.png?fileID=2800000&guid=7e6c249b1dae14f918e70b7fd01d98c1&type=3#pointer");
     border-left-color: rgba(0, 0, 0, 0.5);
     border-right-color: rgba(0, 0, 0, 0.5);
     border-top-color: rgba(0, 0, 0, 0.5);

diff --git a/Dots101/ContentManagement101/README.md b/Dots101/ContentManagement101/README.md
@@ -196,7 +196,12 @@ When a scene is weakly referenced in a build, the original GameObject scene and
 
 ### Building the Player
 
-When building the player, make sure to include subscene references.  
+For local workflows, please complete the following steps before building:
+- Identify the subscenes whose archives need to be packaged.
+- Add a scene to the **Build Profile** that references each required subscene, if they are not already referenced by another subscene in the Build Profile.
+- Build the player.
+
+> This ensures that all necessary subscene data is included in the final output.<br/>
 In the sample, there is a scene named `ContainerScene` which references both `LowFidelitySubscene` and `HighFidelitySubscene`.  
 
 During the build process, Unity includes these references and packs them into the **StreamingAssets** folder for the player.