Unity StateMachineBehaviour

在unity animator中单个Animator Clip中点击Add Behaviour增加当执行该动画时的一些状态代码，请看如下

创建完之后基本代码结构如下：（如果想修改默认代码结构，请看示例：教程示例）

1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4 
 5 public class Hero_walk : StateMachineBehaviour
 6 {
 7     // OnStateEnter is called when a transition starts and the state machine starts to evaluate this state
 8     //override public void OnStateEnter(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
 9     //{
10     //    
11     //}
12 
13     // OnStateUpdate is called on each Update frame between OnStateEnter and OnStateExit callbacks
14     //override public void OnStateUpdate(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
15     //{
16     //    
17     //}
18 
19     // OnStateExit is called when a transition ends and the state machine finishes evaluating this state
20     //override public void OnStateExit(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
21     //{
22     //    
23     //}
24 
25     // OnStateMove is called right after Animator.OnAnimatorMove()
26     //override public void OnStateMove(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
27     //{
28     //    // Implement code that processes and affects root motion
29     //}
30 
31     // OnStateIK is called right after Animator.OnAnimatorIK()
32     //override public void OnStateIK(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
33     //{
34     //    // Implement code that sets up animation IK (inverse kinematics)
35     //}
36 }

我们在来看一下StateMachineBehaviour元数据

 1 #region 程序集 UnityEngine.AnimationModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null
 2 // D:\WorkTools\Unity\2019.4.16f1c1\Editor\Data\Managed\UnityEngine\UnityEngine.AnimationModule.dll
 3 #endregion
 4 
 5 using UnityEngine.Animations;
 6 using UnityEngine.Scripting;
 7 
 8 namespace UnityEngine
 9 {
10     //
11     // 摘要:
12     //     StateMachineBehaviour is a component that can be added to a state machine state.
13     //     It's the base class every script on a state derives from.
14     [RequiredByNativeCode]
15     public abstract class StateMachineBehaviour : ScriptableObject
16     {
17         protected StateMachineBehaviour();
18 
19         public virtual void OnStateEnter(Animator animator, AnimatorStateInfo stateInfo, int layerIndex);
20         public virtual void OnStateEnter(Animator animator, AnimatorStateInfo stateInfo, int layerIndex, AnimatorControllerPlayable controller);
21         public virtual void OnStateExit(Animator animator, AnimatorStateInfo stateInfo, int layerIndex);
22         public virtual void OnStateExit(Animator animator, AnimatorStateInfo stateInfo, int layerIndex, AnimatorControllerPlayable controller);
23         public virtual void OnStateIK(Animator animator, AnimatorStateInfo stateInfo, int layerIndex);
24         public virtual void OnStateIK(Animator animator, AnimatorStateInfo stateInfo, int layerIndex, AnimatorControllerPlayable controller);
25         //
26         // 摘要:
27         //     Called on the first Update frame when making a transition to a state machine.
28         //     This is not called when making a transition into a state machine sub-state.
29         //
30         // 参数:
31         //   animator:
32         //     The Animator playing this state machine.
33         //
34         //   stateMachinePathHash:
35         //     The full path hash for this state machine.
36         public virtual void OnStateMachineEnter(Animator animator, int stateMachinePathHash);
37         public virtual void OnStateMachineEnter(Animator animator, int stateMachinePathHash, AnimatorControllerPlayable controller);
38         //
39         // 摘要:
40         //     Called on the last Update frame when making a transition out of a StateMachine.
41         //     This is not called when making a transition into a StateMachine sub-state.
42         //
43         // 参数:
44         //   animator:
45         //     The Animator playing this state machine.
46         //
47         //   stateMachinePathHash:
48         //     The full path hash for this state machine.
49         public virtual void OnStateMachineExit(Animator animator, int stateMachinePathHash);
50         public virtual void OnStateMachineExit(Animator animator, int stateMachinePathHash, AnimatorControllerPlayable controller);
51         public virtual void OnStateMove(Animator animator, AnimatorStateInfo stateInfo, int layerIndex);
52         public virtual void OnStateMove(Animator animator, AnimatorStateInfo stateInfo, int layerIndex, AnimatorControllerPlayable controller);
53         public virtual void OnStateUpdate(Animator animator, AnimatorStateInfo stateInfo, int layerIndex);
54         public virtual void OnStateUpdate(Animator animator, AnimatorStateInfo stateInfo, int layerIndex, AnimatorControllerPlayable controller);
55     }
56 }

是不是很方便呢，今天刚好找到了这个东西