using UnityEngine;
using UnityEngine.Events;
public abstract class FsmBase
{
    public abstract void OnEnter();
    public abstract void OnLeave();
    public abstract void Update();
}

public enum AnimaState
{
    Attack,
    Move,
    GetHit,
    Die,
    MaxValue
}
public class FsmManager
{
    FsmBase[] allState;//初始化的时候就知道到底有多少个
    sbyte stateIndex;
    sbyte curIndex;
    public FsmManager(byte stateCount)
    {
        allState = new FsmBase[stateCount];
        stateIndex = -1;
        curIndex = -1;
    }
    public void AddState(FsmBase state)
    {
        if (stateIndex < allState.Length)
        {
            stateIndex++;
            allState[stateIndex] = state;
        }
    }
    public void ChangeState(sbyte stateNuber)
    {
        stateNuber = (sbyte)(stateNuber % allState.Length);
        if (curIndex != -1)//之前有状态
        {
            allState[curIndex].OnLeave();
        }
        curIndex = stateNuber;
        allState[curIndex].OnEnter();
    }
    public void Update()
    {
        if (curIndex != -1)
        {
            allState[curIndex].Update();
        }
    }
}
public class EnemyMove : FsmBase
{
    private MeshRenderer m_renderer;
    private Material mat;
    public EnemyMove(MeshRenderer renderer, Material material)
    {
        m_renderer = renderer;
        mat = material;
    }
    public override void OnEnter()
    {
        if (m_renderer.material != mat)
        {
            m_renderer.material = mat;
        }

    }
    public override void OnLeave()
    {

    }
    public override void Update()
    {

    }
}

public class EnemyAttack : FsmBase
{
    private MeshRenderer m_renderer;
    private Material mat;
    float timeCount;
    UnityAction callBack;
    public EnemyAttack(MeshRenderer renderer, Material material, UnityAction unityAction)
    {
        m_renderer = renderer;
        mat = material;
        callBack = unityAction;
    }

    public override void OnEnter()
    {
        timeCount = 0;
        if (m_renderer.material != mat)
        {
            m_renderer.material = mat;
        }
    }
    public override void OnLeave()
    {
    }
    public override void Update()
    {
        timeCount += Time.deltaTime;
        if (timeCount > 0.9f)
        {
            timeCount = 0;
            if (callBack != null)
            {
                callBack();
            }
        }
    }
}

public class EnemyGetHit : FsmBase
{
    private MeshRenderer m_renderer;
    private Material mat;
    float timeCount;
    UnityAction callBack;
    public EnemyGetHit(MeshRenderer renderer, Material material, UnityAction unityAction)
    {
        m_renderer = renderer;
        mat = material;
        callBack = unityAction;
    }

    public override void OnEnter()
    {
        timeCount = 0;
        if (m_renderer.material != mat)
        {
            m_renderer.material = mat;
        }
    }
    public override void OnLeave()
    {
    }
    public override void Update()
    {
        timeCount += Time.deltaTime;
        if (timeCount > 0.7f)
        {
            timeCount = 0;
            if (callBack != null)
            {
                callBack();
            }
        }
    }
}

public class EnemyDie : FsmBase
{
    private MeshRenderer m_renderer;
    private Material mat;
    float timeCount;
    UnityAction callBack;
    public EnemyDie(MeshRenderer renderer, Material material, UnityAction unityAction)
    {
        m_renderer = renderer;
        mat = material;
        callBack = unityAction;
    }

    public override void OnEnter()
    {
        timeCount = 0;
        if (m_renderer.material != mat)
        {
            m_renderer.material = mat;
        }
    }
    public override void OnLeave()
    {
    }
    public override void Update()
    {
        timeCount += Time.deltaTime;
        if (timeCount > 0.7f)
        {
            timeCount = 0;
            if (callBack != null)
            {
                callBack();
            }
        }
    }
}