Get reference to component in blueprint asset

[tweaq]

First off: is there a list of commands? I think I could figure some stuff out if I could just search through a list.

Anyway, now I'm just trying to change the static mesh in a child blueprint. I have my script creating the child blueprint in the content browser and I can create a new staticmesh component inside of it (using this link) But I would rather just set the mesh that is in there. I can't seem to get a reference to the component. I mostly just can't figure out what commands to use.

[rdeioris]

Hi, if you mean the list of wrappers, you find it here: https://github.com/20tab/UnrealEnginePython/blob/master/Source/UnrealEnginePython/Private/UEPyModule.cpp#L198

but take into account that those are mostly optimizations, and instead, 99% of time you will use the reflection api. I suggest you to read this one:

https://github.com/20tab/UnrealEnginePython/blob/master/tutorials/YourFirstAutomatedPipeline.md

your specific case:

https://github.com/20tab/UnrealEnginePython/blob/master/tutorials/YourFirstAutomatedPipeline.md#put-it-all-in-a-new-blueprint

[tweaq]

Will do. Thank you very much. I'm an animator, fumbling through trying to code, so a lot of it is over my head (at least for now). But that looks promising.

[tweaq]

using : ue.log(bp.SimpleConstructionScript.DefaultSceneRootNode.ChildNodes[0].ComponentTemplate.StaticMesh)

It seems I am unable to get a reference to (or be able to set) the Static Mesh in a child blueprint. It works fine on the parent blueprint though.

[rdeioris]

Hi, i think you want UserConstructionScript (the tab Construction Script in blueprint) that is available in bp.FunctionGraphs array and you can manipulate as a normal graph

[rdeioris]

Sorry again, i think you were not referring to the constrction script but instead you want defaults for you blueprint. In such a case you need to edit the cdo (class default object):

bp.GeneratedClass.get_cdo().CapsuleComponent.CapsuleRadius = 300

[tweaq]

I tried using the cdo, but that didn't work either. Its an actor blueprint with a static mesh. i tried it with the static mesh as the root and under a default scene root

I tried the exact same thing but just changing the original blueprint for the child blueprint. I get IndexError: list index out of range when trying to set the mesh with bp_child.SimpleConstructionScript.DefaultSceneRootNode.ChildNodes[0].ComponentTemplate.StaticMesh = sphere It works find for the original blueprint, it seems to hate the Child Blueprint Class. I think i'm going to try the work around of just creating the nodes in the construction script.

[rdeioris]

I fear i am not understanding your issue. Can you post a couple of screenshots with the situation you have now and the one you want ? Thanks

[tweaq]

def createBP(medidroot, MedItem):
    bppath = medidroot + '/Blueprints/BP_' + MedItem
    #creates child bp from MedItem class
    bp_child = ue.create_blueprint(BP_MedItem_C, bppath)
    return bp_child     

def setStaticMesh(bp_child, model):
    #set imported mesh to child bp_child
    bp_child.GeneratedClass.get_cdo().NewMesh = model

This is what I have ended up with. This does work. But I feel it would be better to set the StaticMesh directly, in the child blueprint, instead of changing the variable in the construction script. I wasn't able to get a reference to the child blueprint's static mesh.

So if nothing else, I can just close this and be done with it. Thanks for all the help.

[rdeioris]

Hi, yes it is better to directly set the skeletalmesh of the child (or parent) blueprint:

bp.GeneratedClass.get_cdo().Mesh.SkeletalMesh = <skeletal_mesh_object>

[tweaq]

It's a static mesh, but no matter what I try it says "NoneType object has no attribute 'SkeletalMesh' , or I tried StaticMesh.

[rdeioris]

That's because you have to respect the name of the component, if it is not called 'Mesh', you need to adapt the code (I suppose it is called NewMesh)

[tweaq]

It should be StaticMesh, that is what the static mesh is named under the DefaultSceneRoot. I was trying to set the static mesh in there, instead of having to use the variable in the construction script.

It seems to not like StaticMeshes. I tried the example from the Kaiju: creating a character blueprint and setting the setting the capsule and moving the mesh. That works fine on the capsule and skeletal mesh, but when I add a static mesh to the blueprint, it always comes back as "'NoneType' object has no attribute RelativeLocation"