ActionTowerDefense/ActionTowerDefense/Assets/Scripts/Spirits/ESpirits_Assassin.cs

using UnityEngine;
using Sirenix.OdinInspector;

public class ESpirits_Assassin : Enemy
{
    public enum ESpiritsState
    {
        None,
        Normal, //正常状态
        FindPlayer, //寻找主角位置
        Ready,      //冲刺预警
        Rushing,   //向主角方向冲刺中
        ReadyToDown,    //准备落地斩
        Down,       //落地斩
        DownEnd,
    }
    [FoldoutGroup("组件")] public GameObject aimPrefab;
    [FoldoutGroup("组件")] public AttackTrigger dashTrigger;
    [FoldoutGroup("角色信息")][DisplayOnly] public ESpiritsState eSpiritsState;

    [Space(30)]
    [Title("ESpirits_Assassin属性")]
    [DisplayOnly] public float time;
    public float attackCD;
    [FoldoutGroup("冲刺")] [LabelText("预警距离")] public float readyDistance;
    [FoldoutGroup("冲刺")] [LabelText("冲刺距离")] public float rushDistance;
    [FoldoutGroup("冲刺")] [LabelText("瞄准时间")] public float readyTime;
    [FoldoutGroup("冲刺")] [LabelText("冲刺速度")] public float rushSpeed;
    private Vector3 directionToTarget;
    private float angleToTarget;
    private Vector3 startRushPos;
    private float endTime;
    public AnimationClip fall_endAnimationClip;
    private int oldHitResistance;
    public override void Awake()
    {
        base.Awake();
        endTime = fall_endAnimationClip.length;
        oldHitResistance = hitResistance;
    }

    protected override void Start()
    {
        base.Start();
        len = 1;
        dashTrigger.attackInfo.damage = attackController.attackMethod[1].attackInfo.damage;
    }

    public override void Init()
    {
        base.Init();
        time = attackCD;
    }
    public override void OnState()
    {
        PlayerController playerController = PlayersInput.instance[0];
        switch (state)
        {
            case CharacterState.Idle:
            case CharacterState.Run:
                switch (eSpiritsState)
                {
                    case ESpiritsState.Normal:
                        time += Time.deltaTime;
                        if (time > attackCD)
                        {
                            eSpiritsState = ESpiritsState.FindPlayer;
                        }
                        break;
                    case ESpiritsState.FindPlayer:
                        if (playerController && !playerController.isDie)
                        {
                            if(Vector3.Distance(playerController.transform.position, transform.position) < readyDistance)
                            {
                                eSpiritsState = ESpiritsState.Ready;
                                state = CharacterState.Attack;
                                rb.velocity = Vector3.zero;
                                hitResistance = 100;
                                attributeStatus.resistances.controlOrder = 1;
                                bodyCollider.SetActive(false);
                                rb.useGravity = false;
                                ani.Play("charge", 0, 0);
                                aimPrefab.transform.localScale = new Vector3(rushDistance / 1.5f, 1, 1);
                                directionToTarget = (playerController.transform.position + Vector3.up - aimPrefab.transform.position).normalized;
                                angleToTarget = Mathf.Atan2(directionToTarget.y, directionToTarget.x) * Mathf.Rad2Deg;
                                aimPrefab.transform.rotation = Quaternion.Euler(0, 0, angleToTarget);
                                aimPrefab.SetActive(true);
                                time = 0;
                            }
                        }
                        break;
                }
                break;
            case CharacterState.Attack:
                switch (eSpiritsState)
                {
                    case ESpiritsState.Ready:
                        directionToTarget = 
                            (playerController.transform.position + Vector3.up - aimPrefab.transform.position).normalized;
                        angleToTarget = Mathf.Atan2(directionToTarget.y, directionToTarget.x) * Mathf.Rad2Deg;
                        time += Time.deltaTime;
                        if(directionToTarget.x > 0 && bodyTrans.localScale.x > 0 
                            || directionToTarget.x <0 && bodyTrans.localScale.x < 0)
                        {
                            Turn();
                        }
                        if(time > readyTime)
                        {
                            time = 0;
                            aimPrefab.SetActive(false);
                            ani.Play("attack_summon", 0, 0);
                            //dashTrigger.SetActive(true);
                            eSpiritsState = ESpiritsState.Rushing;
                            transform.rotation = Quaternion.Euler(0, 0,
                                bodyTrans.localScale.x > 0 ?
                                angleToTarget - 180
                                : angleToTarget);
                            startRushPos = transform.position;
                            attackController.ChooseAttack(0);
                            dashTrigger.gameObject.SetActive(true);
                        }
                        break;
                    case ESpiritsState.Rushing:
                        rb.velocity = directionToTarget * rushSpeed;
                        if(Vector3.Distance(startRushPos,transform.position) > rushDistance)
                        {
                            dashTrigger.gameObject.SetActive(false);
                            rb.velocity = Vector3.zero;
                            Quaternion targetQt = Quaternion.Euler(Vector3.zero);
                            if (foot.TrigGround)
                            {
                                bodyCollider.SetActive(true);
                                eSpiritsState = ESpiritsState.DownEnd;
                                ani.Play("fall_end", 0, 0);
                                rb.useGravity = true;
                                if (!foot.haveGravity)
                                {
                                    transform.position = new Vector3(transform.position.x, platformPosY, transform.position.z);
                                    targetQt = Quaternion.Euler(transform.rotation.eulerAngles.x, transform.rotation.eulerAngles.y, platformRotZ);
                                }
                            }
                            else
                            {
                                eSpiritsState = ESpiritsState.ReadyToDown;
                                ani.Play("charge", 0, 0);
                                directionToTarget = Vector3.down;
                                angleToTarget = 270;
                            }
                            transform.rotation = targetQt;
                            time = 0;
                        }
                        break;
                    case ESpiritsState.ReadyToDown:
                        time += Time.deltaTime;
                        if (time > readyTime)
                        {
                            ani.Play("attack_summon", 0, 0);
                            transform.rotation = Quaternion.Euler(0, 0,
                                bodyTrans.localScale.x > 0 ?
                                angleToTarget - 180
                                : angleToTarget);
                            //dashTrigger.SetActive(true);
                            eSpiritsState = ESpiritsState.Down;
                            startRushPos = transform.position;
                        }
                        break;
                    case ESpiritsState.Down:
                        rb.velocity = directionToTarget * rushSpeed;
                        if (foot.TrigGround)
                        {
                            bodyCollider.SetActive(true);
                            eSpiritsState = ESpiritsState.DownEnd;
                            rb.velocity = Vector3.zero;
                            ani.Play("fall_end", 0, 0);
                            rb.useGravity = true;
                            Quaternion targetQt = Quaternion.Euler(Vector3.zero);
                            if (!foot.haveGravity)
                            {
                                transform.position = new Vector3(transform.position.x, platformPosY, transform.position.z);
                                targetQt = Quaternion.Euler(transform.rotation.eulerAngles.x, transform.rotation.eulerAngles.y, platformRotZ);
                            }
                            transform.rotation = targetQt;
                            time = 0;
                        }
                        break;
                    case ESpiritsState.DownEnd:
                        time += Time.deltaTime;
                        if(time > endTime)
                        {
                            eSpiritsState = ESpiritsState.Normal;
                            ani.Play("idle", 0, 0);
                            time = 0;
                            hitResistance = oldHitResistance;
                            attributeStatus.resistances.controlOrder = 0;
                            state = CharacterState.Idle;
                        }
                        break;
                    default:
                        base.OnState();
                        break;
                }
                return;
        }
        base.OnState();
    }

    public override Vector3 GetMoveDir()
    {
        Vector3 moveDir = Vector3.zero;
        switch (eSpiritsState)
        {
            case ESpiritsState.FindPlayer:
                PlayerController playerController = PlayersInput.instance[0];
                if (playerController && !playerController.isDie)
                {
                    if (playerController.transform.position.x - transform.position.x < -1)
                    {
                        moveDir = Vector3.left;
                    }
                    else if (playerController.transform.position.x - transform.position.x > 1)
                    {
                        moveDir = Vector3.right;
                    }
                    else
                    {
                        moveDir = bodyTrans.localScale.x > 0 ? Vector3.left : Vector3.right;
                    }
                    return moveDir;
                }
                break;
            case ESpiritsState.Ready:
                return Vector3.zero;
        }
        return base.GetMoveDir();
        
    }

    public override bool GetAttack()
    {
        switch (eSpiritsState)
        {
            case ESpiritsState.Normal:
                return base.GetAttack();
            default:
                return false;
        }
        
    }

    public override void ChangeState(CharacterState newState)
    {
        switch (eSpiritsState)
        {
            case ESpiritsState.FindPlayer:
                switch (newState)
                {
                    case CharacterState.Attack:
                        break;
                    default:
                        base.ChangeState(newState);
                        break;
                }
                break;
            case ESpiritsState.Ready:
                switch (newState)
                {
                    case CharacterState.Die:
                        base.ChangeState(newState);
                        break;
                }
                return;
            default:
                base.ChangeState(newState);
                break;
        }
    }
}