ActionTowerDefense/ActionTowerDefense/Assets/Scripts/Spirits/Trans_Assassin.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;
public enum Trans_AssassinState
{
    None = -1,
    Normal = 0,         //正常状态
    ReadyToRush = 1,    //准备冲刺状态
    Rush = 2,           //冲刺状态
    HaveRush = 3,       //已冲刺一次状态
    ReadyToSecondRush = 4,  //第二次准备冲刺状态
    SecondRush = 5,     //第二次冲刺
}

public class Trans_Assassin : MonoBehaviour
{

    public PlayerController player;
    public float criticalChance;            //暴击率
    public float criticalMultiplier;        //暴击倍数
    [HideInInspector]
    public float distance;
    public float rushSpeed;
    public float rushTime;
    public GameObject aimEffect;
    public DashEffect dashEffect;
    [HideInInspector]
    public Vector3 targetDir;
    [HideInInspector]
    public float time;
    public float nextRushTime;
    public Trans_AssassinState state;

    // Start is called before the first frame update
    void Start()
    {
        player = GetComponentInParent<PlayerController>();
        player.jumpNumber = 3;
        player.criticalChance = criticalChance;
        player.criticalMultiplier = criticalMultiplier;
        distance = rushSpeed * rushTime/2;
    }
    // Update is called once per frame
    void Update()
    {
        switch (state)
        {
            case Trans_AssassinState.Normal:
                if (player.isUltimate)
                {
                    player.isUltimate = false;
                    player.moveVec = player.leftDir;
                    player.canMove = false;
                    player.ChangeState(CharacterState.None);
                    player.ani.Play("charge", 0, 0);
                    player.canfly = true;
                    if (!player.foot.TrigGround)
                    {

                        player.rb.velocity = Vector3.zero;
                        player.rb.useGravity = false;
                    }
                    aimEffect.SetActive(true);
                    aimEffect.transform.localScale =
                        new Vector3(distance, 3, 1);
                    state = Trans_AssassinState.ReadyToRush;

                }
                break;
            case Trans_AssassinState.ReadyToRush:
                ReadyToDash(player.moveVec);
                if (player.keyTransfigurateRelease)
                {
                    player.keyTransfigurateRelease = false;
                    state = Trans_AssassinState.Rush;
                    time = 0;
                }
                break;
            case Trans_AssassinState.Rush:
                dashEffect.canHit = true;
                aimEffect.SetActive(false);
                player.ani.Play("attack_summon", 0, 0);
                Rush();
                time += Time.deltaTime;
                if (time >= rushTime)
                {
                    player.canMove = true;
                    player.canfly = false;
                    dashEffect.canHit = false;
                    player.bodyTrans.rotation = Quaternion.Euler(Vector3.zero);
                    player.ChangeState(CharacterState.Fall);
                    time = 0;
                    state = Trans_AssassinState.HaveRush;
                }
                break;
            case Trans_AssassinState.HaveRush:
                time += Time.deltaTime;
                if (time >= nextRushTime)
                {
                    player.EndTransfiguration(4);
                    break;
                }
                if (player.isUltimate)
                {
                    player.isUltimate = false;
                    time = 0;
                    player.moveVec = player.leftDir;
                    player.canMove = false;
                    player.ChangeState(CharacterState.None);
                    player.ani.Play("charge", 0, 0);
                    player.canfly = true;
                    if (!player.foot.TrigGround)
                    {

                        player.rb.velocity = Vector3.zero;
                        player.rb.useGravity = false;
                    }
                    aimEffect.SetActive(true);
                    aimEffect.transform.localScale =
                        new Vector3(distance, 3, 1);
                    state = Trans_AssassinState.ReadyToSecondRush;
                }
                break;
            case Trans_AssassinState.ReadyToSecondRush:
                ReadyToDash(player.moveVec);
                if (player.keyTransfigurateRelease)
                {
                    player.keyTransfigurateRelease = false;
                    state = Trans_AssassinState.SecondRush;
                    time = 0;
                }
                break;
            case Trans_AssassinState.SecondRush:
                dashEffect.canHit = true;
                aimEffect.SetActive(false);
                player.ani.Play("attack_summon", 0, 0);
                Rush();
                time += Time.deltaTime;
                if (time >= rushTime)
                {
                    player.canMove = true;
                    player.canfly = false;
                    dashEffect.canHit = false;
                    player.bodyTrans.rotation = Quaternion.Euler(Vector3.zero);
                    player.ChangeState(CharacterState.Fall);
                    time = 0;
                    player.EndTransfiguration(4);
                }
                break;
        }

    }

    private void OnDisable()
    {
        player.criticalChance = 0;
        player.jumpNumber = 2;
        player.bodyTrans.transform.localScale = transform.GetChild(0).localScale;
    }
    public void ReadyToDash(Vector2 leftDir)
    {
        if(leftDir == Vector2.zero)
        {
            if (targetDir == Vector3.zero)
            {
                if (transform.GetChild(0).localScale.x < 0)
                {
                    targetDir = Vector3.right;
                }
                else
                {
                    targetDir = Vector3.left;

                }

            }


        }
        else
        {
            targetDir = leftDir.normalized;
        }


        float k = Mathf.Atan2(targetDir.y, targetDir.x) * Mathf.Rad2Deg;
        if (targetDir.x < 0)
        {
            aimEffect.transform.rotation = Quaternion.Euler(new Vector3(0, 0, k));
            //if (!player.foot.TrigGround)
            //{
            //    transform.rotation = Quaternion.Euler(new Vector3(0, 0, k));
            //}
            if (player.bodyTrans.localScale.x < 0)
            {
                player.bodyTrans.localScale =
                    new Vector3(-player.bodyTrans.localScale.x,player.bodyTrans.localScale.y,
                    player.bodyTrans.localScale.z);
            }

        }
        else
        {
            aimEffect.transform.rotation = Quaternion.Euler(new Vector3(0, 0, k));
            //if (!player.foot.TrigGround)
            //{
            //    transform.rotation = Quaternion.Euler(new Vector3(0, 0, k));
            //}
            if (player.bodyTrans.localScale.x > 0)
            {
                player.bodyTrans.localScale =
                    new Vector3(-player.bodyTrans.localScale.x,player.bodyTrans.localScale.y,
                    player.bodyTrans.localScale.z);
            }
        }
    }
    private void Rush()
    {
        float k = Mathf.Atan2(targetDir.y, targetDir.x) * Mathf.Rad2Deg;
        if (targetDir.x < 0)
        {
            dashEffect.offset = 1;
            if (player.bodyTrans.localScale.x < 0)
            {
                player.bodyTrans.localScale =
                    new Vector3(-player.bodyTrans.localScale.x, player.bodyTrans.localScale.y,
                    player.bodyTrans.localScale.z);
            }

            player.bodyTrans.rotation = Quaternion.Euler(new Vector3(0, 0, k - 180));
        }
        else
        {
            if (player.bodyTrans.localScale.x > 0)
            {
                player.bodyTrans.localScale =
                    new Vector3(-player.bodyTrans.localScale.x, player.bodyTrans.localScale.y,
                    player.bodyTrans.localScale.z);
            }

            dashEffect.offset = -1;
            player.bodyTrans.rotation = Quaternion.Euler(new Vector3(0, 0, k));
        }
        player.rb.velocity = targetDir * rushSpeed;
    }
}