using System;
using System.Data;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
//武器伤害面板的计算方式 damage = (strAddition + level) * Character.str  + (dexAddtion + level) * Character.dex
//  +   basicDamage * level
public abstract class Weapon : MonoBehaviour
{
    Character self;
    List<Character> enemiesInRange = new List<Character>();
    List<Character> destroyedEnemies = new List<Character>();
    //补正
    public float strAddition = 1.0f;
    public float dexAddtion = 3.0f;
    //基础伤害
    public int basicDamage = 9;
    //对强韧度造成的伤害
    public int poiseDamgage = 1;
    //攻击消耗的行动点数
    public int movementCost = 3;
    //武器等级
    public int level = 0;
    public bool valid = true;
    public int manaCovery = 0;
    //武器描述
    public string description;
    public string weaponName;
    public void SetRotation(Vector2 direction)
    {
        if(direction == Vector2.up)
        transform.localEulerAngles = new Vector3(0,0,180);
        if(direction == Vector2.right)
        transform.localEulerAngles = new Vector3(0,0,90);
        if(direction == Vector2.down)
        transform.localEulerAngles = new Vector3(0,0,0);
        if(direction == Vector2.left)
        transform.localEulerAngles = new Vector3(0,0,-90);
    }
    protected void Awake()
    {
        self = transform.parent.parent.GetComponent<Character>();
        Revise();
    }
    public void Attack()
    {
        if (enemiesInRange != null && enemiesInRange.Count > 0)               // **** 若攻击范围内无敌人则不能进行攻击
        {
            if(self.GetCurrentMovement() >= movementCost)
            {
                self.ChangeMana(manaCovery);
                self.ChangeMovement(-movementCost);
                RaycastHit2D hit = Physics2D.Raycast(self.transform.position,Vector2.up,1.0f,LayerMask.GetMask("Cells"));
                Cell currentCell = hit.collider.GetComponent<Cell>();
                if(currentCell.damage > 0)
                    self.ChangeHealth(-currentCell.damage);
                ApplyAttack();
            }
            else
                self.OutOfMovement();
        }
    }
    //关闭显示攻击范围
    protected void OnTriggerExit2D(Collider2D other)
    {
        if(other.gameObject.layer == 8)
        {
            Cell cell = other.gameObject.GetComponent<Cell>();
            cell.SetMask(false);
            if(cell.currentCharacter != null && self.groupNumber != cell.currentCharacter.groupNumber)
                enemiesInRange.Remove(cell.currentCharacter);
        }
    }
    protected void OnTriggerEnter2D(Collider2D other)
    {
        if(other.gameObject.layer == 8)
        {
            Cell cell = other.gameObject.GetComponent<Cell>();
            if(cell.currentCharacter != null && self.groupNumber != cell.currentCharacter.groupNumber)
                enemiesInRange.Add(cell.currentCharacter);
        }
    }
    protected void OnTriggerStay2D(Collider2D other)
    {
        //武器有不同的攻击范围，选中角色时，可显示武器的攻击范围。
        //显示攻击范围
        if(other.gameObject.layer == 8)
        {
            other.gameObject.GetComponent<Cell>().SetMask(true);
        }
    }
    //攻击功能
    protected void ApplyAttack()
    {
        foreach (var enemy in enemiesInRange)
        {
            enemy.ChangeHealth(GameSettlement.DamageSettlement(this,self,enemy));
            enemy.ChangePoise(-poiseDamgage);
            if(enemy.GetCurrentHealth() == 0)
            {
                destroyedEnemies.Add(enemy);
                if(self.GetExecute())
                {
                    self.ChangeHealth(10);
                    self.ChangeMana(5);
                }
            }
            self.buffManager.ApplyActiveSpecial(enemy);
            enemy.buffManager.ApplyPassiveSpecial(self);
        }
        foreach (var enemy in destroyedEnemies)
        {
            enemiesInRange.Remove(enemy);
        }
        destroyedEnemies.Clear();
    }
    public abstract void LevelUp(Character character);
    protected abstract void Revise();
    public abstract int CheckLevelUpCost();
}