using System.Net.Mime;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using TMPro;                                // **

public class Character : MonoBehaviour
{
    //角色等级
    int level = 1;
    //角色ID
    int id = 0;
    //角色阵营序列号
    public int groupNumber;
    //角色可加点属性
    int str = 1;
    int dex = 1;
    int san = 1;
    int inte = 1;
    int def = 1;
    int vig = 1;
    //角色衍生属性
    int maxHealth;
    int maxPoise;
    int maxMovement ;
    int currentHealth;
    int currentMovement;
    int currentPoise;
    //调用其他类
    WeaponManager weaponManager;
    CharacterUIManager characterUIManager;
    MovementBar movementBar;
    GameObject currentWeaponObject;
    Weapon currentWeapon;
    GameManager gameManager;
    Animator animator;
    Vector2 lookDirection = new Vector2(1, 0);                                      // **   初始化lookDirection

    //初始化
    void Start()
    {
        animator = GetComponent<Animator>();
        gameManager = GameObject.Find("GameManager").GetComponent<GameManager>();
        //初始化角色战斗属性
        maxMovement = (int)(dex * 2 + san * 2 + 8);
        maxHealth = 10 + vig * 10;
        maxPoise = (int)(str * 4 + vig * 2);
        currentMovement = maxMovement;
        currentHealth = maxHealth;
        currentPoise = maxPoise;
        //初始化角色UI
        characterUIManager = transform.GetChild(1).GetComponent<CharacterUIManager>();
        movementBar = transform.GetChild(1).GetChild(2).GetComponent<MovementBar>();
        characterUIManager.ChangePoints(0, 1.0f, 0);
        characterUIManager.ChangePoints(0, 1.0f, 1);
        movementBar.ChangeMovement(0, currentMovement, 1);
        //初始化角色位置
        RaycastHit2D hit = Physics2D.Raycast(transform.position,Vector2.up,1.0f,LayerMask.GetMask("Cells"));
        hit.collider.GetComponent<Cell>().SetOccupied(true);
        hit.collider.GetComponent<Cell>().SetCurrentCharacter(this);
        //初始化角色武器
        weaponManager = transform.GetChild(0).GetComponent<WeaponManager>();
    }
    //鼠标点击角色
    private void OnMouseDown()
    {
        if(gameManager.GetSelected() != null)
            gameManager.GetSelected().Cancel();
        if(currentMovement >= 0)
            Selected();
    }
    //选中角色
    public void Selected()
    {
        if(gameManager.currentGroup != groupNumber || currentMovement < 1)
            return;
        animator.SetFloat("selected", 1);
        gameManager.SetSelected(gameObject.GetComponent<Character>());
        if(!gameManager.GetExploreMode())
        {
            weaponManager.SetCurrnetWeaponActive(true);
            movementBar.SetMovementActive(true);
        }
    }
    //取消选中角色
    public void Cancel()
    {
        animator.SetFloat("selected", 0);
        gameManager.SetSelected(null);
        weaponManager.SetCurrnetWeaponActive(false);
        if(!gameManager.GetExploreMode())
            movementBar.SetMovementActive(false);
    }
    //移动角色
    public void Move(Vector2 deviation)
    {
        //角色朝向
        Turn(deviation);
        //判断角色是否能够前进
        Vector2 temp = new Vector2(deviation.x + transform.position.x, deviation.y + transform.position.y);
        RaycastHit2D[] hits = Physics2D.RaycastAll(transform.position,deviation,1.0f,LayerMask.GetMask("Cells"));
        if(hits.Length <= 1)
        {
            Debug.Log("Not Accessed");
        }
        else
        {
            Cell currentCell = hits[0].collider.GetComponent<Cell>();
            Cell cell = hits[1].collider.GetComponent<Cell>();
            if(cell.GetOccupied())    Debug.Log("Not Accessed");
            else if(temp.x == cell.transform.position.x && temp.y == cell.transform.position.y)
            {
                //判断行动点数是否够用
                if(currentMovement >= cell.cost)
                {
                    if(!gameManager.GetExploreMode())
                        ChangeMovement(-cell.cost);
                    //改变棋子所占用的单元格
                    transform.position = cell.transform.position;
                    currentCell.SetOccupied(false);
                    currentCell.SetCurrentCharacter(null);
                    cell.SetCurrentCharacter(this);
                    cell.SetOccupied(true);
                }
                else
                {
                    OutOfMovement();
                }
                //陷阱地形对角色造成伤害
                if(cell.damage > 0)
                    ChangeHealth(-cell.damage);
            }
        }
    }
    //调节生命值，在血量减少或回复时调用
    public void ChangeHealth(int amount)
    {
        currentHealth = Mathf.Clamp(currentHealth + amount, 0 ,maxHealth);
        characterUIManager.ChangePoints(amount,currentHealth / (float)maxHealth, 0);     //生命值改变后血条显示改变
    }
    //调节韧性点数
    public void ChangePoise(int amount)
    {
        currentPoise = Mathf.Clamp(currentPoise + amount, 0 ,maxPoise);
        characterUIManager.ChangePoints(amount,currentPoise / (float)maxPoise, 1);   //韧性值改变后韧性条显示改变
    }
    //调节行动点数
    public void ChangeMovement(int amount)
    {
        currentMovement += amount;
        movementBar.ChangeMovement(amount,currentMovement,currentMovement / (float)maxMovement);
    }
    //结束回合时重制角色行动点数
    public void ReSet()
    {
        if(currentPoise <= 0)
        {
            currentPoise = maxPoise;
            characterUIManager.ChangePoints(0, 1, 1);
            currentMovement = (int)(maxMovement * 0.5);
        }
        else
            currentMovement = maxMovement;
        ChangeMovement(0);
    }
    //获取当前行动点数
    public int GetCurrentMovement()
    {
        return currentMovement;
    }
    //获取当前生命值
    public int GetCurrentHealth()
    {
        return currentHealth;
    }
    //角色转向
    public void Turn(Vector2 direction)
    {
        lookDirection = direction;
        weaponManager.weapons[weaponManager.currentIndex].SetRotation(direction);
        animator.SetFloat("lookX", direction.x);
        animator.SetFloat("lookY", direction.y);
    }
    public void Dialogue()
    {
        Vector2 position = new Vector2(transform.position.x, transform.position.y);                  // **   以Vector2形式保存当前位置                                                                             // **
        RaycastHit2D hit = Physics2D.Raycast(position + Vector2.up * 0.2f,
        lookDirection, 1.5f,LayerMask.GetMask("NPC"));                                               // **   判断是否接触NPC
        if (hit.collider != null)                                                                    // **
        {                                                                                            // **
            NonPlayerCharacter character = hit.collider.GetComponent<NonPlayerCharacter>();          // **
            if (character != null)                                                                   // **
            {                                                                                        // **
                character.DisplayDialog();                                                           // **
            }                                                                                        // **                                                                                        // **
        }                                                                                            // **
    }
    //显示行动点不足                                                                                                // **
    public void OutOfMovement()
    {
        characterUIManager.OutOfMovement();
    }
    //切换武器
    public void GetNextWeapon()
    {
        weaponManager.weapons[weaponManager.currentIndex].gameObject.SetActive(false);
        weaponManager.currentIndex += 1;
        weaponManager.currentIndex %= 2;
        weaponManager.weapons[weaponManager.currentIndex].gameObject.SetActive(true);
        weaponManager.weapons[weaponManager.currentIndex].SetRotation(lookDirection);
    }
    private void OnDestroy()
    {
        //Debug.Log("OnDestroy was called");
        RaycastHit2D hit = Physics2D.Raycast(transform.position,Vector2.up,1.0f,LayerMask.GetMask("Cells"));
        hit.collider.GetComponent<Cell>().SetOccupied(false);
        gameManager.SearchPieces();
        gameManager.groupCount[groupNumber] -= 1;
        gameManager.SetExploreMode();
    }

    // **** 捡起物品
    public void Pickup()
    {
        Vector2 position = new Vector2(transform.position.x, transform.position.y);                  // ****   以Vector2形式保存当前位置                                                                             // **
        RaycastHit2D hit = Physics2D.Raycast(position + Vector2.up * 0.2f,
        lookDirection, 1.5f, LayerMask.GetMask("Item"));                                             // ****   判断是否接触物品
        if (hit.collider != null)                                                                    // ****
        {                                                                                            // ****
            ItemInMap item = hit.collider.GetComponent<ItemInMap>();                                 // ****
            if (item != null)                                                                        // ****
            {                                                                                        // ****
                item.AddNewItem();                                                                   // ****                                              
            }                                                                                        // ****                                                                                       // **
        }                                                                                            // ****
    }
}