How to retrieve what Skeletal Mesh is used from Skeleton asset? (Python)

Development Programming & Scripting
1

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I know it is possible to get the Skeleton asset used in the Skeletal Mesh asset using unreal.SkeletalMesh.skeleton unreal.SkeletalMesh — Unreal Python 5.0 (Experimental) documentation

How about in-reverse?

2

The solution just crossed my mind is…
get all skeletal meshes and check if there is any skeletal mesh using the input skeleton.
( use list & for loop)

But I don’t know if this is an efficient way.

I hope this helps you :slight_smile:

3

Guess that might be the only way? also that implies skeletal mesh and skeleton are not 1 to 1 relationship: a skeletal mesh can only have one input skeleton, but a skeleton can be used on multiple skeletal mesh, thus have different preview skeletal mesh?

4

I have another idea to get skeletal meshes from the skeleton asset.

There is a classmethod called find_package_referencers_for_asset in Unreal Python.

https://docs.unrealengine.com/5.0/en-US/PythonAPI/class/EditorAssetLibrary.html?highlight=find_package_referencers_for_asset#unreal.EditorAssetLibrary.find_package_referencers_for_asset

For example,

import unreal

skeleton_path = "/Game/Characters/Mannequin_UE4/Meshes/SK_Mannequin_Skeleton"

assets = unreal.EditorAssetLibrary.find_package_referencers_for_asset(skeleton_path, False)

skeletal_meshes = []

for asset in assets:
   assetData = unreal.EditorAssetLibrary().find_asset_data(asset)
   if assetData.asset_class == "SkeletalMesh":
       skeletal_meshes.append(asset)

Through this code, it is possible to get a list of skeletal meshes using the skeleton. :slight_smile:

(but I don’t know how to get the preview skeletal mesh yet)

5

I like this one better, I’ll mark this as the solution. Thanks

6

Thank you, this was very helpful
This is an update to use this in version 5.2

import unreal

skeleton_path = "/Game/Characters/Mannequin_UE4/Meshes/SK_Mannequin_Skeleton"

assets = unreal.EditorAssetLibrary.find_package_referencers_for_asset(skeleton_path, False)

skeletal_meshes = []
asset_lib = unreal.EditorAssetLibrary()
for asset in assets:
	check = asset_lib.does_asset_exist(asset)
	if not check:
		# had a bug where some assets were not in the asset registry?
		continue
	assetData = asset_lib.find_asset_data(asset)
	if assetData.asset_class_path.asset_name == 'SkeletalMesh':
		skeletal_meshes.append(asset)