AnimatorController.CreateStateMachineBehaviour

Parameters

Returns

int Returns instance id of created object, returns 0 if something is not valid.

Description

This function will create a StateMachineBehaviour instance based on the class define in this script.

This function will validate that the monoscript is a valid statemachine behaviour, the class must be a sub class of StateMachineBehaviour and shouldn't be a generic. Additional resources: StateMachineBehaviour.

using UnityEditor;
using UnityEditor.Animations;
using UnityEngine;

public class AddSMB
{
    public void DoAddStateMachineBehaviour(UnityEditor.Animations.AnimatorState state, MonoScript monoScript)
    {
        if (state == null)
            return;

        int instanceID = AnimatorController.CreateStateMachineBehaviour(monoScript);
        if (instanceID == 0)
        {
            Debug.LogError("Could not create state machine behaviour " + monoScript.name);
            return;
        }

        state.AddStateMachineBehaviour(monoScript.GetClass());

        var obj = EditorUtility.InstanceIDToObject(instanceID);
        if (obj == null)
            Debug.LogError("No object could be found with instance id: " + instanceID);
        else
            AssetDatabase.AddObjectToAsset(obj, state.ToString());
    }
}