AnimatorController.FindStateMachineBehaviourContext

参数

返回

StateMachineBehaviourContext[] 返回状态机行为版本上下文。

描述

使用此函数可检索行为的所有者。

请注意，此函数的运行速度非常缓慢。不建议对每一帧都使用此函数。 另请参阅：StateMachineBehaviourContext。

using UnityEngine;
using UnityEditor;


public class IdleBehaviour : StateMachineBehaviour
{
    public int transitionCount;
    protected int randomTransitionId = Animator.StringToHash("random");

    // OnStateEnter is called when a transition starts and the state machine starts to evaluate the state
    override public void OnStateEnter(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
    }

    // OnStateUpdate is called at each engine tick between OnStateEnter and OnStateExit callback
    override public void OnStateUpdate(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
        if (stateInfo.normalizedTime > 0.5f)
            animator.SetInteger(randomTransitionId, Random.Range(0, transitionCount));
    }

    // OnStateExit is called when a transition ends and the state machine ends to evaluate the state
    override public void OnStateExit(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
    }
}

[CustomEditor(typeof(IdleBehaviour), true)]
public class IdleBehaviourEditor : Editor
{
    UnityEditor.Animations.StateMachineBehaviourContext[] context;

    SerializedProperty transitionCount;

    public void OnEnable()
    {
        context = UnityEditor.Animations.AnimatorController.FindStateMachineBehaviourContext(target as StateMachineBehaviour);
        if (context != null)
        {
            // animatorObject can be an AnimatorState or AnimatorStateMachine
            UnityEditor.Animations.AnimatorState state = context[0].animatorObject as UnityEditor.Animations.AnimatorState;
            if (state != null)
            {
                IdleBehaviour behaviour = target as IdleBehaviour;
                behaviour.transitionCount = state.transitions.Length;
            }
        }

        transitionCount = serializedObject.FindProperty("transitionCount");
    }

    public override void OnInspectorGUI()
    {
        serializedObject.Update();

        EditorGUI.BeginDisabledGroup(true);
        EditorGUILayout.PropertyField(transitionCount);
        EditorGUI.EndDisabledGroup();

        serializedObject.ApplyModifiedProperties();
    }
}