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Assets/Scripts/NBC/FSM/Fsm.cs

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+using System;
+using System.Collections.Generic;
+using Unity.VisualScripting;
+
+namespace NBC
+{
+    public class Fsm<TOwnerClass>
+    {
+        private FsmBaseState<TOwnerClass> _currentState;
+
+        private Dictionary<uint, FsmBaseState<TOwnerClass>> _states = new Dictionary<uint, FsmBaseState<TOwnerClass>>();
+
+        private Dictionary<Type, uint> _stateType2Id = new Dictionary<Type, uint>();
+
+        private bool _doDebugOutput;
+
+        private TOwnerClass _owner;
+
+        private string _description;
+
+
+        public uint CurrentStateId => _currentState.StateId;
+
+        public FsmBaseState<TOwnerClass> CurrentState => _currentState;
+
+        public Fsm(string description, TOwnerClass owner, bool debugOutput = false)
+        {
+            _description = description;
+            _owner = owner;
+            _doDebugOutput = debugOutput;
+        }
+
+        public void RegisterState<T>() where T : FsmBaseState<TOwnerClass>, new()
+        {
+            var type = typeof(T);
+            if (_stateType2Id.ContainsKey(type))
+            {
+                LogError("State {0} already registered", type);
+                return;
+            }
+
+            T result = new T();
+            _stateType2Id[type] = result.StateId;
+            _states[result.StateId] = result;
+            result.Init(_owner, this);
+        }
+
+        public void Start<T>() where T : FsmBaseState<TOwnerClass>, new()
+        {
+            Log("start");
+            EnterState(typeof(T));
+        }
+
+        public void EnterState(Type type, FsmBaseState<TOwnerClass> sourceState = null)
+        {
+            if (_stateType2Id.TryGetValue(type, out var id))
+            {
+                EnterState(id, sourceState);
+            }
+        }
+
+        public void EnterState(uint stateId, FsmBaseState<TOwnerClass> sourceState = null)
+        {
+            uint prevState = 0;
+            FsmTransmit param = null;
+            if (_currentState != null)
+            {
+                prevState = _currentState.StateId;
+                param = _currentState.Params;
+                _currentState.Exit();
+            }
+
+            _currentState = _states[stateId];
+            _currentState.PrevState = prevState;
+            if (param != null)
+            {
+                _currentState.Params.AddRange(param);
+                param.Clear();
+            }
+
+            if (sourceState != null)
+            {
+                _currentState.Transition(sourceState);
+            }
+            else
+            {
+                _currentState.Enter();
+            }
+        }
+
+        public void Update()
+        {
+            if (_currentState != null)
+            {
+                _currentState.PreUpdate();
+                var type = _currentState.Update();
+                if (type != 0)
+                {
+                    _currentState.NextState = type;
+                    EnterState(type);
+                }
+            }
+        }
+
+        public void FixedUpdate()
+        {
+            if (_currentState != null)
+            {
+                var type = _currentState.FixedUpdate();
+                if (type != 0)
+                {
+                    _currentState.NextState = type;
+                    EnterState(type);
+                }
+            }
+        }
+
+        public void LateUpdate()
+        {
+            if (_currentState != null)
+            {
+                var type = _currentState.LateUpdate();
+                if (type != 0)
+                {
+                    _currentState.NextState = type;
+                    EnterState(type);
+                }
+            }
+        }
+
+
+        public void LogError(string textPattern, params object[] args)
+        {
+        }
+
+        public void Log(string text)
+        {
+            if (!_doDebugOutput)
+            {
+            }
+        }
+    }
+}

Assets/Scripts/NBC/FSM/Fsm.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 53d2b03339c14d70af4039451671366f

Assets/Scripts/NBC/FSM/FsmBaseState.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace NBC
+{
+    public abstract class FsmBaseState<TOwnerClass>
+    {
+        protected TOwnerClass _owner;
+        protected Fsm<TOwnerClass> Root;
+
+        public FsmTransmit Params = new FsmTransmit();
+
+        public abstract uint StateId { get; }
+
+        public uint PrevState { get; set; }
+
+        public uint NextState { get; set; }
+
+        protected float EnterTime { get; set; }
+
+        public void Init(TOwnerClass owner, Fsm<TOwnerClass> fsm)
+        {
+            _owner = owner;
+            Root = fsm;
+        }
+
+        public virtual void Transition(FsmBaseState<TOwnerClass> source)
+        {
+            Enter();
+        }
+
+        public void Enter()
+        {
+            EnterTime = Time.time;
+            onEnter();
+        }
+
+        protected virtual void onEnter()
+        {
+        }
+
+        public void Exit()
+        {
+            onExit();
+        }
+
+        protected virtual void onExit()
+        {
+        }
+
+        public uint Update()
+        {
+            return onUpdate();
+        }
+
+        protected virtual uint onUpdate()
+        {
+            return 0;
+        }
+
+        public uint FixedUpdate()
+        {
+            return onFixedUpdate();
+        }
+
+        protected virtual uint onFixedUpdate()
+        {
+            return 0;
+        }
+
+        public void PreUpdate()
+        {
+            OnPreUpdate();
+        }
+
+        protected virtual void OnPreUpdate()
+        {
+        }
+
+        public uint LateUpdate()
+        {
+            return OnLateUpdate();
+        }
+
+        protected virtual uint OnLateUpdate()
+        {
+            return 0;
+        }
+    }
+}

Assets/Scripts/NBC/FSM/FsmBaseState.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 6fefa29788c940ebb9bfb95358cca1a0
+timeCreated: 1732110077

Assets/Scripts/NBC/FSM/FsmTransmit.cs

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+using System.Collections.Generic;
+using System.Linq;
+
+namespace NBC
+{
+    public class FsmTransmit
+    {
+        private readonly List<object> _queue = new List<object>();
+
+        public List<object> AllParam => _queue;
+
+        public void Add(object o)
+        {
+            _queue.Add(o);
+        }
+
+        public void AddRange(FsmTransmit transmit)
+        {
+            _queue.AddRange(transmit.AllParam);
+        }
+
+        public void AddRange(IEnumerable<object> o)
+        {
+            _queue.AddRange(o);
+        }
+
+        public object Get(int index)
+        {
+            if (index >= 0 && index < _queue.Count)
+            {
+                return _queue[index];
+            }
+
+            return null;
+        }
+
+        public void Clear()
+        {
+            _queue.Clear();
+        }
+    }
+}

Assets/Scripts/NBC/FSM/FsmTransmit.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 4288fa116ccf436983b60932fbe19d3b