ActionTowerDefense/ActionTowerDefense/Assets/Scripts/Characters/Enemy.cs

using OfficeOpenXml.FormulaParsing.Excel.Functions.Logical;
using Sirenix.OdinInspector;
using Spine;
using Spine.Unity;
using System.Collections;
using System.Collections.Generic;
using TMPro;
using Unity.VisualScripting;
using UnityEngine;

public enum EnemyTag
{
    Common,
    Backline,
    Tank
}

public enum SearchState
{
    NoTarget = 0,       //搜索范围内没有目标
    InSearchScope = 1,  //在搜索范围内发现目标，但不在攻击范围内
    InAttackScope = 2,  //目标在攻击范围内
}

public class Enemy : MoveCharacter
{
    [Space(30)]
    [Title("Enemy属性")]
    [LabelText("击杀提供的经验值")]
    public int exp;
    public EnemyTag tag;
    [LabelText("死亡特效")]
    public GameObject dieEffect;
    public string name;
    public int baseSortingOrder;
    int sortingOrder = 0;
    public bool isBack = false; //往反方向走
    public float jumpSpeed = 10;
    public float maxMoveSpeed, minMoveSpeed;
    public float runSpeed;

    [Header("击飞、屏幕反弹")]
    public bool isBeBlownUp;    //被击飞
    public bool isBeReboundedX; //X方向被反弹
    public bool isBeReboundedY; //Y方向被反弹
    private bool hasBeReboundedX;
    private bool hasBeReboundedY;
    public float reboundXSpeed;
    public float reboundYSpeed;
    public int wallDamage;

    [Header("敌方英灵")]
    public Spirits.SpiritType type;

    [Header("敌方单位组件")]
    public SearchState searchState;

    [Header("攻击")]
    public float attackRatio;
    protected int curAttackID;
    public int len;
    protected float pastAttackTime;
    protected bool isConAttack;       //连续攻击，不切idle动画

    [Header("掉落魂")]
    public int dropSoulMax = 3;
    public int dropSoulMin = 1;
    public int dropProbability = 100;
    public float dropSoulAngle = 60f;

    private float mass;

    public override void Awake()
    {
        base.Awake();
        mass = rb.mass;
    }

    protected virtual void Start()
    {
        len = attackController.attackMethod_march.Length;
    }

    protected virtual void OnEnable()
    {
        Init();
    }

    public void OnDisable()
    {
        EnemyCreater.instance.OnEnemyRecycle(this);
    }

    public override void Init()
    {
        base.Init();
        moveSpeed = Random.Range(minMoveSpeed, maxMoveSpeed);
        spinee.transform.rotation = Quaternion.identity;
        ChangeSearchState(SearchState.NoTarget);
        attributeStatus.curSpecialStates = SpecialState.Null;
        attributeStatus.attributeTime = 0;
        curAttackID = 0;
        attackController.curAttackMethod = attackController.attackMethod_march[0];
        rb.mass = mass;
    }

    public override void FixedUpdate()
    {
        OnSearchState();
        OnState();
    }

    public override Vector3 GetMoveDir()
    {
        Vector3 moveDir = Vector3.zero;
        switch (searchState)
        {
            case SearchState.NoTarget:
                if (TowerMap.myTowers.Count == 0)
                {
                    moveDir = Vector3.right;
                    break;
                }
                float minDistance = Mathf.Infinity;
                int id = -1;
                for (int i = 0; i < TowerMap.myTowers.Count; i++)
                {
                    Tower myTower = TowerMap.myTowers[i].GetComponent<Tower>();
                    if (transform.position.y >
                        myTower.transform.position.y + myTower.height)
                    {
                        continue;
                    }
                    float distance = Vector3.Distance(transform.position,
                        TowerMap.myTowers[i].transform.position);
                    if (distance < minDistance)
                    {
                        minDistance = distance;
                        id = i;
                    }
                }
                if (id == -1)
                {
                    moveDir = Vector3.right;
                    break;
                }
                if (bodyTrans.position.x > TowerMap.myTowers[id].transform.position.x)
                {
                    moveDir = Vector3.left;
                }
                else
                {
                    moveDir = Vector3.right;
                }

                break;
            case SearchState.InSearchScope:
                if (targetCharacter)
                {
                    if (targetCharacter.transform.position.x - transform.position.x < -1)
                    {
                        moveDir = Vector3.left;
                    }
                    else if(targetCharacter.transform.position.x - transform.position.x >1)
                    {
                        moveDir = Vector3.right;
                    }
                    else
                    {
                        moveDir = bodyTrans.localScale.x > 0 ? Vector3.left : Vector3.right;
                    }
                }
                else
                {
                    moveDir = Vector3.zero;
                }
                break;
            case SearchState.InAttackScope:
                if (targetCharacter)
                {
                    if (targetCharacter.transform.position.x - transform.position.x < 0)
                    {
                        moveDir = Vector3.left;
                    }
                    else
                    {
                        moveDir = Vector3.right;
                    }
                }
                else
                {
                    moveDir = Vector3.zero;
                }
                break;
            default:
                break;
        }
        if (!isBack)
        {
            return moveDir;
        }
        return -moveDir;
    }

    public virtual bool GetAttack()
    {
        if (searchState == SearchState.InAttackScope)
        {
            return true;
        }
        return false;
    }

    public bool GetJump()
    {
        return false;
    }

    public override void OnState()
    {
        base.OnState();
        if (state == CharacterState.FramePause)
        {
            return;
        }
        //hurtKeepTime -= Time.deltaTime;
        
        invincibleTime -= Time.deltaTime;
        pastAttackTime += Time.deltaTime;
        Vector3 leftDir = GetMoveDir();
        bool isAttack = GetAttack();
        Vector3 velocity = rb.velocity;
        Quaternion targetQt = Quaternion.Euler(Vector3.zero);
        switch (state)
        {
            case CharacterState.Idle:
                if (isAdjustHeight == 1)
                {
                    ChangeState(CharacterState.Rise);
                    break;
                }
                else if (isAttack)
                {
                    if (pastAttackTime >= attackController.attackInterval)
                    {
                        Attack_march();
                    }
                }
                else
                {
                    if (!foot.TrigGround && !canFly)
                    {
                        if (rb.velocity.y > 0)
                        {
                            ChangeState(CharacterState.Rise);
                            break;
                        }
                        else
                        {
                            ChangeState(CharacterState.Fall);
                            break;
                        }
                    }
                    if (leftDir.x > 0.3f || leftDir.x < -0.3f)
                    {
                        ChangeState(CharacterState.Run);
                        break;
                    }
                    velocity.y = 0;
                    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);
                    }
                    if (RotLerpTime < 1)
                    {
                        RotLerpTime += RotLerpSpeed * Time.deltaTime;
                        transform.rotation = Quaternion.Lerp(transform.rotation, targetQt, RotLerpTime);
                    }
                    else
                    {
                        transform.rotation = targetQt;
                    }
                    rb.velocity = velocity;
                }
                break;
            case CharacterState.Run:
                if (isAttack)
                {
                    if (pastAttackTime >= attackController.attackInterval)
                    {
                        Attack_march();
                    }
                    else
                    {
                        ChangeState(CharacterState.Idle);
                    }
                }
                else
                {
                    if (!foot.TrigGround && !canFly)
                    {
                        if (rb.velocity.y > 0)
                        {
                            ChangeState(CharacterState.Rise);
                            break;
                        }
                        else
                        {
                            ChangeState(CharacterState.Fall);
                            break;
                        }
                    }
                    if (leftDir.x < 0.3f && leftDir.x > -0.3f)
                    {
                        ChangeState(CharacterState.Idle);
                        break;
                    }
                    if (leftDir.x > 0.3f)
                    {
                        velocity.x = moveSpeed;
                        if (bodyTrans.localScale.x > 0)
                        {
                            Turn();
                        }
                    }
                    else if (leftDir.x < -0.3f)
                    {
                        velocity.x = -moveSpeed;
                        if (bodyTrans.localScale.x < 0)
                        {
                            Turn();
                        }
                    }
                    velocity.y = 0;
                    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);
                    }
                    if (RotLerpTime < 1)
                    {
                        RotLerpTime += RotLerpSpeed * Time.deltaTime;
                        transform.rotation = Quaternion.Lerp(transform.rotation, targetQt, RotLerpTime);
                    }
                    else
                    {
                        transform.rotation = targetQt;
                    }
                    rb.velocity = velocity;
                    AdjustHeight();
                }
                break;
            case CharacterState.Rush:
                if (isAttack)
                {
                    if (pastAttackTime >= attackController.attackInterval)
                    {
                        Attack_march();
                    }
                    else
                    {
                        ChangeState(CharacterState.Idle);
                    }
                }
                else
                {
                    if (!foot.TrigGround && !canFly)
                    {
                        if (rb.velocity.y > 0)
                        {
                            ChangeState(CharacterState.Rise);
                            break;
                        }
                        else
                        {
                            ChangeState(CharacterState.Attack);
                            break;
                        }
                    }
                    if (leftDir.x < 0.3f && leftDir.x > -0.3f)
                    {
                        ChangeState(CharacterState.Idle);
                        break;
                    }
                    if (leftDir.x > 0.3f)
                    {
                        //rb.velocity += Vector3.right * moveAcc * Time.deltaTime;
                        rb.velocity = Vector3.right * runSpeed;
                        //if (rb.velocity.x > maxMoveSpeed)
                        //{
                        //    rb.velocity = new Vector3(maxMoveSpeed, rb.velocity.y, rb.velocity.z);
                        //}
                        if (bodyTrans.localScale.x > 0)
                        {
                            Turn();
                        }
                    }
                    else if (leftDir.x < -0.3f)
                    {
                        //rb.velocity -= Vector3.right * moveAcc * Time.deltaTime;
                        rb.velocity = Vector3.left * runSpeed;
                        //if (rb.velocity.x < -maxMoveSpeed)
                        //{
                        //    rb.velocity = new Vector3(-maxMoveSpeed, rb.velocity.y, rb.velocity.z);
                        //}
                        if (bodyTrans.localScale.x < 0)
                        {
                            Turn();
                        }
                    }
                    //AdjustHeight();
                }
                break;
            case CharacterState.Rise:
                if (isAdjustHeight == 1)
                {
                    AdjustHeight();
                    if (!foot.haveGravity)
                    {
                        targetQt = Quaternion.Euler(transform.rotation.eulerAngles.x, transform.rotation.eulerAngles.y, platformRotZ);
                    }
                    if (RotLerpTime < 1)
                    {
                        RotLerpTime += RotLerpSpeed * Time.deltaTime;
                        transform.rotation = Quaternion.Lerp(transform.rotation, targetQt, RotLerpTime);
                    }
                    else
                    {
                        transform.rotation = targetQt;
                    }
                }
                else if (isAdjustHeight == 2)
                {
                    ChangeState(CharacterState.Idle);
                    isAdjustHeight = 0;
                }
                else
                {
                    if (rb.velocity.y <= 0)
                    {
                        ChangeState(CharacterState.Fall);
                        break;
                    }
                    rb.velocity += Vector3.up * extraRiseGravity * Time.deltaTime;
                }
                break;
            case CharacterState.Fall:
                if (foot.TrigGround || canFly)
                {
                    ChangeState(CharacterState.Idle);
                    break;
                }
                velocity.y += extraFallGravity * Time.deltaTime;
                if (leftDir.x > 0.3f)
                {
                    velocity.x = moveSpeed;
                    if (bodyTrans.localScale.x > 0)
                    {
                        Turn();
                    }
                }
                else if (leftDir.x < -0.3f)
                {
                    velocity.x = -moveSpeed;
                    if (bodyTrans.localScale.x < 0)
                    {
                        Turn();
                    }
                }

                rb.velocity = velocity;
                break;
            case CharacterState.Attack:
                attackController.JudgeTriggerOnOff();
                if (attackController.attackTime <= 0)
                {
                    isAttack = GetAttack();
                    if (isAttack)
                    {
                        isConAttack = true;
                    }
                    ChangeState(CharacterState.Idle);
                    break;
                }
                if (!foot.haveGravity)
                {
                    targetQt = Quaternion.Euler(transform.rotation.eulerAngles.x, transform.rotation.eulerAngles.y, platformRotZ);
                }
                if (RotLerpTime < 1)
                {
                    RotLerpTime += RotLerpSpeed * Time.deltaTime;
                    transform.rotation = Quaternion.Lerp(transform.rotation, targetQt, RotLerpTime);
                }
                else
                {
                    transform.rotation = targetQt;
                }
                break;
            case CharacterState.Die:
                dieKeepTime -= Time.deltaTime;
                if (dieKeepTime <= 0)
                {
                    if (killer!=null && killer.GetComponent<Demonic>())
                    {
                        SoldierType st = killer.GetComponent<Demonic>().soldierType;
                        SoldierEXP.expInstance.AddEXP(st, (int)(exp * LevelSelect.EXPRatio + 0.5f));
                    }
                    if (dieEffect)
                    {
                        PoolManager.Instantiate(dieEffect, transform.position);
                    }
                    GameManager gameManager = GameManager.instance;
                    if (gameManager.gameType == GameType.GameEnd)
                    {
                        GameObject fx = PoolManager.Instantiate(gameManager.dropGoldFX);
                        fx.transform.position = transform.position;
                        GameObject injuryNum =  PoolManager.Instantiate(gameManager.dropGoldText);
                        injuryNum.transform.position = new Vector3(
                            transform.position.x + injuryNumPos_march.x + Random.Range(-injuryNumRandom_march.x / 2f, injuryNumRandom_march.x / 2f),
                            transform.position.y + injuryNumPos_march.y + Random.Range(-injuryNumRandom_march.y / 2f, injuryNumRandom_march.y / 2f),
                            transform.position.z);
                        TextMeshProUGUI text = injuryNum.GetComponentInChildren<TextMeshProUGUI>();
                        text.text = $"+{gameManager.enemyGoldDrop}";
                    }
                    gameObject.SetActive(false);
                    break;
                }
                break;
            case CharacterState.HitStun:
                hitFeedbackSystem.HitStunUpdate();
                break;
            case CharacterState.SpecialStatus_Float:
                attributeStatus.SpecialStateEffect(SpecialState.FloatState);
                break;
            case CharacterState.SpecialStatus_BlowUp:
                attributeStatus.SpecialStateEffect(SpecialState.BlownUp);
                break;
            case CharacterState.SpecialStatus_ShotDown:
                attributeStatus.SpecialStateEffect(SpecialState.ShotDown);
                break;
            case CharacterState.SpecialStatus_Weak:
                attributeStatus.SpecialStateEffect(SpecialState.Weak);
                break;
           
            default:
                break;
        }
    }

    public override void ChangeState(CharacterState newState)
    {
        if (state == newState || newState == CharacterState.FramePause)
        {
            state = newState;
            return;
        }
        //Debug.Log("从" + state + "转向" + newState);
        switch (state)
        {
            case CharacterState.Idle:
                //transform.rotation = Quaternion.Euler(Vector3.zero);
                break;
            case CharacterState.Run:
                rb.velocity = Vector3.zero;
                //transform.rotation = Quaternion.Euler(Vector3.zero);
                break;
            case CharacterState.Rush:
                rb.velocity = Vector3.zero;
                break;
            case CharacterState.Rise:
                if (!canFly)
                {
                    bodyCollider.SetActive(true);
                }
                break;
            case CharacterState.Fall:
                rb.velocity = Vector3.zero;
                break;
            //case CharacterState.Hurt:
            //    break;
            case CharacterState.Attack:
                attackController.isAttackTriggerOn = false;
                attackController.curAttackMethod.attackTrigger.gameObject.SetActive(false);
                break;
            case CharacterState.Die:
                isDie = false;
                break;
            case CharacterState.FramePause:
                state = newState;
                return;
            default:
                break;
        }
        CharacterState oldState = state;
        state = newState;
        switch (newState)
        {
            case CharacterState.Idle:
                if (!isConAttack || attackController.attackInterval > 0)
                {
                    ani.Play(AnimatorHash.ANIMATOR_idle, 0, 0);
                }
                rb.velocity = Vector3.zero;
                break;
            case CharacterState.Run:
                ani.Play(AnimatorHash.ANIMATOR_walk, 0, 0);
                break;
            case CharacterState.Rush:
                ani.Play(AnimatorHash.ANIMATOR_rush, 0, 0);
                break;
            case CharacterState.Fall:
                ani.Play(AnimatorHash.ANIMATOR_fall, 0, 0);
                break;
            case CharacterState.Attack:
                break;
            case CharacterState.Rise:
                nowCanFly = canFly;
                break;
            case CharacterState.Die:
                ani.Play(AnimatorHash.ANIMATOR_die, 0, 0);
                isDie = true;
                dieKeepTime = totalDieKeepTime;
                if(GameManager.instance.gameType != GameType.GameEnd)
                {
                    DropSouls();
                }
                break;
            default:
                break;
        }
    }

    public void DropSouls()
    {
        int dropSoulNum = Random.Range(dropSoulMin, dropSoulMax + 1);
        if (dropSoulNum > 1)
        {
            for (int i = 0; i < dropSoulNum; i++)
            {
                float angleInterval = dropSoulAngle / (float)(dropSoulNum - 1);
                float angle = 90 + ((float)i - (float)(dropSoulNum - 1) / 2) * angleInterval;
                angle = angle / 180 * Mathf.PI;
                GameObject soulObj = PoolManager.Instantiate(soulPrefab, transform.position);
                Vector3 dir = new Vector3(Mathf.Cos(angle), Mathf.Sin(angle), 0);
                Soul soul = soulObj.GetComponent<Soul>();
                soul.Burst(dir * soulStartSpeed);
                soul.type = type;
            }
        }
        else
        {
            int randomInt = Random.Range(0, 100);
            if (randomInt >= dropProbability)
            {
                return;
            }
            GameObject soulObj = PoolManager.Instantiate(soulPrefab, transform.position);
            Vector3 dir = Vector3.up;
            Soul soul = soulObj.GetComponent<Soul>();
            soul.Burst(dir * soulStartSpeed);
            soul.type = type;
        }
    }

    public void Jump()
    {
        SetUpSpeed(jumpSpeed);
        ani.Play(AnimatorHash.ANIMATOR_jump, 0, 0);
    }

    public void SetUpSpeed(float speed)
    {
        ChangeState(CharacterState.Rise);
        Vector3 velocity = rb.velocity;
        Vector3 leftDir = GetMoveDir();
        if (leftDir.x > 0.3f)
        {
            if (bodyTrans.localScale.x > 0)
            {
                Turn();
            }
        }
        else if (leftDir.x < -0.3f)
        {
            if (bodyTrans.localScale.x < 0)
            {
                Turn();
            }
        }
        velocity.y = speed;
        rb.velocity = velocity;
        //animalAni.SetInteger("state", (int)PlayerState.Rise);
    }

    public void ChangeSearchState(SearchState newState)
    {
        switch (searchState)
        {
            case SearchState.NoTarget:
                break;
            case SearchState.InSearchScope:
                break;
            case SearchState.InAttackScope:
                break;
            default:
                break;
        }
        searchState = newState;
        switch (searchState)
        {
            case SearchState.NoTarget:
                Character character0 = PlayersInput.instance[0];
                if (character0 && character0.attackController.beTargetCharacter.Exists(t => t == this))
                {
                    character0.attackController.beTargetCharacter.Remove(this);
                }
                targetCharacter = null;
                break;
            case SearchState.InSearchScope:
                break;
            case SearchState.InAttackScope:
                break;
            default:
                break;
        }
    }

    public bool SearchTarget()
    {
        targetCharacter = searchTrigger.GetMinDisTarget(attackController.targetTypes, attackController.curAttackMethod.canHitFly, attackController.curAttackMethod.searchMode);

        if (targetCharacter != null)
        {
            Character character0 = PlayersInput.instance[0];
            Character character1 = PlayersInput.instance[1];
            if (targetCharacter == character0
                && !character0.attackController.beTargetCharacter.Exists(t => t == this))
            {
                character0.attackController.beTargetCharacter.Add(this);
            }
            if (targetCharacter == character1
                && !character1.attackController.beTargetCharacter.Exists(t => t == this))
            {
                character1.attackController.beTargetCharacter.Add(this);
            }
            return true;
        }
        else
        {
            return false;
        }
    }

    public void OnSearchState()
    {
        switch (searchState)
        {
            case SearchState.NoTarget:
                if (SearchTarget())
                {
                    ChangeSearchState(SearchState.InSearchScope);
                    break;
                }
                //向玩家基地移动
                break;
            case SearchState.InSearchScope:
                if (!SearchTarget())
                {
                    targetCharacter = null;
                    ChangeSearchState(SearchState.NoTarget);
                    break;
                }
                attackDis = attackController.curAttackMethod.attackDistance + targetCharacter.beHitDistance;
                if (targetCharacter != null && Mathf.Abs(targetCharacter.transform.position.x - transform.position.x) <= attackDis)
                {
                    ChangeSearchState(SearchState.InAttackScope);
                    break;
                }
                break;
            case SearchState.InAttackScope:
                if (targetCharacter != null)
                {
                    //判断是否在射程夹角内
                    AttackController.AttackMethod am = attackController.curAttackMethod;
                    if (am.attackType == AttackController.AttackType.Shoot 
                        && attackController.curAttackMethod.attackInfo.attackMethod_Type == AttackMethod_Type.Attack_March)
                    {
                        Vector3 dir = targetCharacter.beSearchTrigger.transform.position - transform.position;
                        float angle = Vector3.Angle(dir, Vector3.left * bodyTrans.localScale.x);
                        if ((dir.y > 0 && angle > am.maxUpAngle) || (dir.y < 0 && angle > am.maxDownAngle))
                        {
                            ChangeSearchState(SearchState.NoTarget);
                        }
                    }
                    attackDis = attackController.curAttackMethod.attackDistance + targetCharacter.beHitDistance;
                    if (!targetCharacter.gameObject.activeInHierarchy || targetCharacter.isDie
                        || Mathf.Abs(targetCharacter.transform.position.x - transform.position.x) > attackDis)
                    {
                        ChangeSearchState(SearchState.NoTarget);
                    }
                }
                else
                {
                    ChangeSearchState(SearchState.NoTarget);
                }
                break;
            default:
                break;
        }
    }
    public void Attack_summon()
    {
        CheckTurn(GetMoveDir().x);
        attackController.Attack_summon();
        attackTarget = targetCharacter;
    }

    public virtual void Attack_march()
    {
        CheckTurn(GetMoveDir().x);
        attackController.Attack_march();
        if (curAttackID + 1 < len)
        {
            curAttackID += 1;
        }
        else if (attackController.curAttackMethod.attackInfo.attackMethod_Type == AttackMethod_Type.Attack_Summon)
        {
            curAttackID = 1;
        }
        else
        {
            curAttackID = 0;
        }
        attackTarget = targetCharacter;
        pastAttackTime = 0;
    }

    public void ChosePlayer()
    {
        float distance0 = Mathf.Infinity;
        float distance1 = Mathf.Infinity;
        PlayerController player0 = PlayersInput.instance[0];
        PlayerController player1 = PlayersInput.instance[1];
        if (player0 != null && !player0.isRevive)
        {
            distance0 = Mathf.Abs(player0.transform.position.x
                - transform.position.x);
        }
        if (player1 != null && !player1.isRevive)
        {
            distance1 = Mathf.Abs(player1.transform.position.x
                - transform.position.x);
        }
        if (distance0 == Mathf.Infinity && distance1 == Mathf.Infinity)
        {
            targetCharacter = null;
            return;
        }
        if (distance0 <= distance1)
        {
            targetCharacter = player0;
            if (!player0.attackController.beTargetCharacter.Exists(t => t == this))
            {
                player0.attackController.beTargetCharacter.Add(this);
            }

        }
        else
        {
            targetCharacter = player1;
            if (!player1.attackController.beTargetCharacter.Exists(t => t == this))
            {
                player1.attackController.beTargetCharacter.Add(this);
            }
        }
    }

    public override void BeHit(int damage)
    {
        base.BeHit(damage);
    }

    public override void BeHit(AttackController.AttackMethod attackMethod, Character attackFrom, int damage = -1)
    {
        base.BeHit(attackMethod, attackFrom, damage);
    }
}