1、vs 注解快捷键？
2、接口 方法、属性、字段?
3、生命周期（awake 、enable、start、update、fixedupdate、lateupdate、ongui)?
4、[HideInInspector]
第一步：IState 初步定义
1 using UnityEngine;
2 using System.Collections;
3
4 public interface IState{
5 //获取状态机状态
6 uint GetStateID();
7
8 //void OnEnter();
9 //void OnLeave();
10 //等待补全
11 void OnEnter();
12 void OnLeave();
13
14 //Unity 生命周期
15 void OnUpdate();
16 void OnFixedUpdate();
17 void OnLateUpdate();
18 }
第二步：StateMachine 定义初步
1 using UnityEngine;
2 using System.Collections;
3 using System.Collections.Generic;
4
5 public class StateMachine {
6 //使用字典 存储状态
7 private Dictionary<uint, IState> mDictionaryState;
8 //当前状态
9 private IState mCurrentState;
10
11 public StateMachine()
12 {
13 mDictionaryState = new Dictionary<uint, IState>();
14 mCurrentState = null;
15 }
16 //添加状态
17 public bool RegisterState(IState state)
18 {
19 if (state == null)
20 {
21 return false;
22 }
23 if (mDictionaryState.ContainsKey(state.GetStateID()))
24 {
25 return false;
26 }
27 mDictionaryState.Add(state.GetStateID(), state);
28 return true;
29 }
30 //获取状态
31 public IState GetState(uint stateID)
32 {
33 IState state = null;
34 mDictionaryState.TryGetValue(stateID, out state);
35 return state;
36 }
37 //停止状态
38 public void StopState(object param1, object param2)
39 {
40
41 }
42 }
第三步：补全 IState 替换掉步骤一中的两个函数
1 //等待补全 2 //预留两个参数备用 3 void OnEnter(StateMachine machine,IState preState,object param1,object param2); 4 void OnLeave(IState nextState,object param1,object param2);
第四步：继续完善StateMachine
1 using UnityEngine;
2 using System.Collections;
3 using System.Collections.Generic;
4
5 public class StateMachine {
6 //使用字典 存储状态
7 private Dictionary<uint, IState> mDictionaryState;
8 //当前状态
9 private IState mCurrentState;
10
11 public uint CurrentStateID //获取当前状态机ID
12 {
13 get
14 {
15 return mCurrentState == null ? 0 : mCurrentState.GetStateID();
16 }
17 }
18
19 public IState CurrentState //获取当前状态机
20 {
21 get
22 {
23 return mCurrentState;
24 }
25 }
26
27 public StateMachine() // 构造函数初始化
28 {
29 mDictionaryState = new Dictionary<uint, IState>();
30 mCurrentState = null;
31 }
32
33 public bool RegisterState(IState state) //添加状态
34 {
35 if (state == null)
36 {
37 return false;
38 }
39 if (mDictionaryState.ContainsKey(state.GetStateID()))
40 {
41 return false;
42 }
43 mDictionaryState.Add(state.GetStateID(), state);
44 return true;
45 }
46
47 public IState GetState(uint stateID)//获取状态
48 {
49 IState state = null;
50 mDictionaryState.TryGetValue(stateID, out state);
51 return state;
52 }
53
54 public void StopState(object param1, object param2)//停止状态
55 {
56 if (mCurrentState == null)
57 {
58 return;
59 }
60 mCurrentState.OnLeave(null, param1, param2);
61 mCurrentState = null;
62 }
63
64 public bool UnRegisterState(uint StateID)//取消状态注册
65 {
66 if (!mDictionaryState.ContainsKey(StateID))
67 {
68 return false;
69 }
70 if (mCurrentState != null && mCurrentState.GetStateID() == StateID)
71 {
72 return false;
73 }
74 mDictionaryState.Remove(StateID);
75 return true;
76 }
77
78 //切换状态
79
80 //切换状态的委托
81 public delegate void BetweenSwitchState(IState from, IState to, object param1, object param2);
82 //切换状态的回调
83 public BetweenSwitchState BetweenSwitchStateCallBack = null;
84 public bool SwitchState(uint newStateID, object param1, object param2)
85 {
86 //当前状态切当前状态 false
87 if (mCurrentState != null && mCurrentState.GetStateID() == newStateID)
88 {
89 return false;
90 }
91 //切换到没有注册过的状态 false
92 IState newState = null;
93 mDictionaryState.TryGetValue(newStateID, out newState);
94 if (newState == null)
95 {
96 return false;
97 }
98 // 退出当前状态
99 if (mCurrentState != null)
100 {
101 mCurrentState.OnLeave(newState, param1, param2);
102 }
103
104 //状态切换间做的事
105 IState oldState = mCurrentState;
106 mCurrentState = newState;
107 if (BetweenSwitchStateCallBack != null)
108 {
109 BetweenSwitchStateCallBack(oldState, mCurrentState, param1, param2);
110 }
111 //进入新状态
112 newState.OnEnter(this, oldState, param1, param2);
113 return true;
114 }
115
116 public bool IsState(uint stateID) //当前是否在某个状态
117 {
118 return mCurrentState == null ? false : mCurrentState.GetStateID() == stateID;
119 }
120 public void OnUpdate()
121 {
122 if (mCurrentState != null)
123 {
124 mCurrentState.OnUpdate();
125 }
126 }
127 public void OnFixedUpdate()
128 {
129 if (mCurrentState != null)
130 {
131 mCurrentState.OnFixedUpdate();
132 }
133 }
134 public void OnLateUpdate()
135 {
136 if (mCurrentState != null)
137 {
138 mCurrentState.OnLateUpdate();
139 }
140 }
141 }
第五步：使用状态机 Player(初步）
1 using UnityEngine;
2 using System.Collections;
3
4 public class Player : MonoBehaviour {
5 [HideInInspector]
6 public StateMachine PlayerStateMachine = new StateMachine();
7 void Awake () {
8 }
9
10 void Update () {
11 PlayerStateMachine.OnUpdate();
12 }
13 void FixedUpdate()
14 {
15 PlayerStateMachine.OnFixedUpdate();
16 }
17 void LateUpdate()
18 {
19 PlayerStateMachine.OnLateUpdate();
20 }
21 }
第六步：定义两个状态 实现接口 IState，定义 枚举StateType
1 using UnityEngine;
2 using System.Collections;
3
4 public class LeftRightMove : IState {
5 private Player player;
6 public LeftRightMove(Player player)
7 {
8 this.player = player;
9 }
10
11 public uint GetStateID()
12 {
13 return (uint)Player.StateType.LeftRight;
14 }
15
16 public void OnEnter(StateMachine machine, IState prevState, object param1, object param2)
17 {
18 if (prevState != null)
19 {
20 Debug.Log("LeftRightMove OnEnter PrevState is :" + prevState.GetStateID());
21 }
22 else
23 {
24 Debug.Log("LeftRightMove OnEnter");
25 }
26
27 }
28
29 public void OnLeave(IState nextState, object param1, object param2)
30 {
31 Debug.Log("LeftRightMove OnLeave NextState is : " + nextState.GetStateID());
32 }
33
34 private bool isLeft = true;
35 public void OnUpdate()
36 {
37 if (isLeft)
38 {
39 player.transform.position += new Vector3(-0.1f, 0.0f, 0.0f);
40 if (player.transform.position.x < -2f)
41 {
42 isLeft = false;
43 }
44 }
45 else
46 {
47 player.transform.position += new Vector3(0.1f, 0.0f, 0.0f);
48 if (player.transform.position.x > 2f)
49 {
50 isLeft = true;
51 }
52 }
53 }
54
55 public void OnFixedUpdate()
56 {
57 }
58
59 public void OnLateUpdate()
60 {
61 }
62 }
1 using UnityEngine;
2 using System.Collections;
3
4 public class Player : MonoBehaviour {
5 [HideInInspector]
6 public StateMachine PlayerStateMachine = new StateMachine();
7 public enum StateType : uint
8 {
9 LeftRight = 0,
10 UpDown = 1
11 }
12 void Awake () {
13 PlayerStateMachine.RegisterState(new LeftRightMove(this));
14 PlayerStateMachine.RegisterState(new UpDownMove(this));
15 }
16 void OnGUI() {
17 if (GUI.Button(new Rect(0,0,200,50),"LeftRight"))
18 {
19 PlayerStateMachine.SwitchState((uint)StateType.LeftRight, null, null);
20 }
21 if (GUI.Button(new Rect(0,100,200,50),"UpDown"))
22 {
23 PlayerStateMachine.SwitchState((uint)StateType.UpDown, null, null);
24 }
25 }
26 void Update () {
27 PlayerStateMachine.OnUpdate();
28 }
29 void FixedUpdate()
30 {
31 PlayerStateMachine.OnFixedUpdate();
32 }
33 void LateUpdate()
34 {
35 PlayerStateMachine.OnLateUpdate();
36 }
37 }
Demo 见链接、使用Unity 4.6.9f1编译打包
链接：http://pan.baidu.com/s/1c03CQCo 密码：6pcp
时间： 2024-10-01 07:22:58