120 lines
2.8 KiB
C#
120 lines
2.8 KiB
C#
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using System;
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using System.Reflection;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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public class FSM<T>
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{
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public string CurrentState => mCurrentState != null ? mCurrentState.GetType().ToString() : "";
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private Dictionary<Type, BaseState<T>> mStateDic;
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private T mMaster;
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private BaseState<T> mCurrentState;
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private bool mActive;
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public FSM(T pMaster)
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{
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mMaster = pMaster;
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mStateDic = new Dictionary<Type, BaseState<T>>();
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mActive = true;
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}
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public void ChangeState(Type pStateType = null)
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{
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if (pStateType == null)//change to empty
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{
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if (mCurrentState != null)
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mCurrentState.ExitState(null);
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mCurrentState = null;
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return;
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}
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BaseState<T> tNextState = null;
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if (pStateType != null)
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{
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if (!mStateDic.ContainsKey(pStateType))
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{
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object tInstance = pStateType.Assembly.CreateInstance(pStateType.Name);
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if (tInstance is BaseState<T>)
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{
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tNextState = tInstance as BaseState<T>;
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tNextState.SetFSM(this);
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tNextState.SetMaster(mMaster);
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mStateDic.Add(pStateType, tNextState);
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}
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else
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{
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Debug.LogError("State Class : " + pStateType.Name + " is not a " + typeof(BaseState<T>).Name + "!");
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}
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}
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else
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{
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tNextState = mStateDic[pStateType];
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}
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}
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else
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{
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Debug.LogError("State Class : " + pStateType.Name + " is not found!");
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}
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if (tNextState != null && tNextState != mCurrentState)
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{
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if (mCurrentState != null)
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mCurrentState.ExitState(tNextState.GetType());
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tNextState.EnterState(mCurrentState?.GetType());
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mCurrentState = tNextState;
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}
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}
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public void Execute(float pDeltaTime)
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{
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if (!mActive)
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return;
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if (mCurrentState != null)
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mCurrentState.ExecuteState(pDeltaTime);
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}
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public void SetActive(bool pActive)
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{
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mActive = pActive;
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}
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}
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public class BaseState<T>
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{
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protected T mMaster;
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protected FSM<T> mFSM;
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public void SetFSM(FSM<T> pFSM)
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{
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mFSM = pFSM;
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}
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public void SetMaster(T pMaster)
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{
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mMaster = pMaster;
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}
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public virtual void EnterState(Type pLastState)
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{
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}
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public virtual void ExitState(Type pNextState)
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{
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}
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public virtual void ExecuteState(float pDeltaTime)
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{
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}
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protected void ChangeState(Type pType)
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{
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mFSM.ChangeState(pType);
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}
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}
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