using System.Collections.Generic;
using UnityEngine;

public class CastleMageSkill : UnitSkill
{
    [Header("小型魔爆参数")]
    [Min(0.1f)]
    public float explosionRadius = 1.8f;

    [Min(0f)]
    public float explosionDamage = 85f;

    public override void ReleaseSkill()
    {
        GameObject target = unit.Target;
        UnitTeam myTeam = unit.GetComponent<UnitTeam>();
        if (target == null || myTeam == null)
        {
            return;
        }

        Vector3 center = target.transform.position;
        float radiusSquared = explosionRadius * explosionRadius;
        HashSet<UnitBase> hitUnits = new HashSet<UnitBase>();

        foreach (UnitTeam opponentTeam in GameObject.FindObjectsOfType<UnitTeam>())
        {
            GameObject opponent = opponentTeam.gameObject;
            if (opponent == null
                || opponent.transform.root == unit.transform.root
                || !myTeam.IsEnemy(opponent))
            {
                continue;
            }

            Vector3 offset = opponent.transform.position - center;
            offset.y = 0f;
            if (offset.sqrMagnitude > radiusSquared)
            {
                continue;
            }

            UnitBase targetUnit = opponent.GetComponentInParent<UnitBase>();
            if (targetUnit != null && hitUnits.Add(targetUnit))
            {
                targetUnit.ReceiveDamage(explosionDamage, unit.gameObject);
            }
        }
    }
}