Unity Asset Bundle 9 Jan 2019 |VERIFIED|

Create AssetBundles by calling BuildPipeline.BuildAssetBundles or using the Scriptable Build Pipeline package.

A bundle built for any of the standalone platforms can only be loaded on that platform, for example a bundle build on iOS is not compatible with Android.This is because shaders, textures and other types of data are built into platform-specific formats based on the BuildTarget.

See Also: UnityWebRequestAssetBundle.GetAssetBundle, Loading Resources at Runtime, BuildPipeline.BuildAssetBundles.

I have created some asset bundles from my Unity assets using the directions given in the Unity documentation section on AssetBundle Workflow. After running the "Build AssetBundles" command, each asset bundle results in four files: myasset, myasset.meta, myasset.manifest, myasset.manifest.meta.

Unity Asset Bundle 9 Jan 2019

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Now I am ready to deploy these bundles to a web server and implement downloading/caching in my Unity project. I have found numerous examples such as this that show the download URL to be a single file with a .unity3d extension. This is leading me to conclude that I am missing a step - I assume that all four of my files will be required by the app and that I have to do something to combine them into a .unity3d file first.

Unity creates the .meta files for all assets- you don't have to worry about those. In short, your myasset file is enough. I do not add file extensions to mine. Do note that if you use the strategy shown in the example that you shared that the client will re-download the bundle from the server every time. You need to additionally provide a version number if you want to take advantage of caching. You can see this in some of the method overloads here, the ones that have a Hash128 or uint "version" parameter. Caching is great because you can use the bundle that is already saved on the device next time instead of downloading from the server when no changes have occurred. The version/hash number you provide essentially gets mapped to the file name. Whenever a matching version is found, the file on disk is used. Update the version number to something else when the content changes to force the client to download anew.

You may want to reference the .manifest file for the CRC value listed there. You may have noticed a crc parameter in the link I shared as well. This can be used to ensure data integrity during transmission of the bundle data. You can make sure the downloaded content's CRC matches that of the bundle when you created it.

I see that Unity provides addressables as new solution for asset management. As its new (not very new as its accessible from 2018.2, but official docs dont say a lot) there is not so much about it on the web.

From what it seems, in addressables you dont need to care about the bundle version, or which asset is in which bundle. In addresables, Unity automatically uploads assets to your host, and Unity automatically correctly manages local caching or downloads from a server, so objects behave like they are in the main game package but you have to check if they are loaded or downloaded. Am I right?Are there any other features that addressables offer?

This used to be pretty annoying with asset bundles. First you had to know in which asset bundles that asset was hiding in. Then you had to find out if this asset bundles was already loaded, and when it wasn't you had to load it first. And only then were you able to retrieve the asset with assetBundle.LoadAsset(name).

But with Addressables you just need to know the address string. You can then just do Addressables.LoadAsset(address); and Unity will automatically find out if the asset and its dependencies need to be loaded from the local filesystem or from a remote server and do so if necessary.

Personally I also don't get it. If you made the game and you saved your content intelligently then knowing where an asset is located is as easy as knowing the filepath to it (rather than a file url). Using the old WWW.LoadFromCacheOrDownload() meant getting ahold of the latest version and loading it was one line of code.

Now you first have to create online projects to generate buckets and keys for the project and buckets so you can then download a CLI to authorize your system before you can then go into Unity and create a URL based of an existing URL you just magically have to know and then augmented with 2 of the API keys you get from the online project under a few submenus deep before you can finally get around to building the asset bundles (hey look, back to where we started) and publish it to the development URL until you are ready to release in which case you build and publish to the release bucket and NOW... now it is so much easier to use because now you just have to know the address string which is sooooooo much easier than knowing the file path you placed your content into.

The deal is, I'm creating an app that implies the user uploading his/her own 3D models, some of them animated. So downloading 3D models to the device storage and then loading them at runtime is very complicated and doesn't guarantee a successful load. It would be way more easier if before uploading the model it was packaged into an asset bundle. But I don't want my user needing to download unity and learning how to create asset bundles.

The Addressable Asset System (i.e., Addressables) is a Unity Editor and runtime asset management system that improves support for large production teams with complex live content delivery needs. The system uses asynchronous loading to support loading from any location with any collection of dependencies. By packing asset bundles more efficiently and reducing iteration time, Addressables provides a simple way to make your game more dynamic.

When you mark something as an addressable, it becomes part of an Addressables Group, which is a container for the addressable assets and their data. You can visualize the groups in the Groups window, which is the home base for Addressables. Groups can determine whether or not that asset is going to be local to a device or up on a server.

The data on Addressables Groups is held in schemas, which are data contracts. One of the schemas focuses on how your assets and content will be built into bundles. Build Path and Load Path are among the more useful settings, allowing you to set your content to be local or remote by selecting a variable from the drop-down menus.

Simulate Groups analyzes content for layout and dependencies without creating asset bundles.To see when bundles load or unload during gameplay, view the asset usage in the Addressables Event Viewer window (Window > Asset Management > Addressables > Event Viewer). This mode helps you simulate load strategies and tweak your content groups to find the right balance for a production release.

Hey!!

This is my first ever time using Unity. I recently bought a VrChat avatar off gumroad and I have followed numerous avatar uploading yt videos for unity but I keep receiving this error when I try to publish. I have looked at numerous forums trying to follow them but I really dont understand some of the instructions. Any help???

Addressable and asset bundles are both techniques used in game development to manage and optimize the loading and storage of game assets, but they have different approaches and use cases. Let's explore each of them:

Addressable is a system introduced by Unity Technologies to provide a more flexible and efficient way to manage and load game assets. It allows developers to decouple asset references from their physical locations, making it easier to load and update assets dynamically during runtime.

Asset Bundles are a feature in Unity that allows developers to package game assets (such as textures, models, audio files, etc.) together into separate files for efficient loading and storage. Asset Bundles are created during the development process and are typically loaded at runtime.

Deployment and Updates: Bundles can be deployed and updated separately from the main game package, allowing developers to deliver new assets or updates without requiring players to download the entire game.

Comparison: Addressable focus on the management and loading of assets, providing features like dynamic loading, versioning, and remote hosting. It offers a more flexible and granular approach for asset management.

Asset Bundles, on the other hand, are primarily focused on packaging and loading assets efficiently. They are created during the development process and allow for modular loading and deployment of assets.

In some cases, Addressable and Asset Bundles can be used together. Developers might use Asset Bundles to package assets into separate files and then manage the loading and updating of these bundles using the Addressable system.

Ultimately, the choice between Addressable and Asset Bundles depends on the specific needs of the game and the desired asset management strategy. Both approaches have their strengths and can be used effectively to optimize asset loading and storage in Unity games.

3. Organize your game assets into groups. These groups will be used to manage and load assets dynamically. You can create groups based on the type of assets, such as "Characters," "Levels," "UI," etc. To create a new group, go to Window -> Asset Management -> Addressable -> Groups."

4. You can add assets to each group. Right-click on a group and select "Add Addressable Assets." Choose the assets you want to include in the group. This step allows Unity to generate unique addresses for each asset, making them addressable.

2. Make sure you have the Asset bundle Browser package installed in your project. If not, you can add it by going to the Unity Package Manager (Window -> Package Manager) and searching for "Addressable Asset System." Install the package from there.

After debugging it looks like the logic is getting the URL correctly, the downloading itself is successful and in the request object, there is seemingly the correct amount of bytes received. The moment I get to the point of retrieving the assetBundle object I get the error above and the bundle itself is null. be457b7860