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Calling BP Graph Functions

How to call a function declared in the Blueprint Editor

Last updated 25 days ago

For Blueprint functions created in the Blueprint Editor we can use call_method() to access them via Python:

asset_instance.call_method("function")

For functions with inputs we can use either the args or kwargs parameters:

asset_instance.call_method("function", args=("inputs_as_a_tuple",))
asset_instance.call_method("function", kwargs={"arg": "value"})

It also works with Blueprint functions that have returns:

value = asset_instance.call_method("function_with_return")

call_method also works with custom events:

Note: An asset loaded using unreal.load_asset() does not have direct access to call methods defined in the Blueprint Graph, we will need to get either its default object or an active instance of the BP:

asset_instance = unreal.new_object(asset.generated_class())
# or 
default_object = unreal.get_default_object(asset.generated_class())