using UnityEngine;

/// <summary>
/// 单位阵营标记：用阵营 ID 替代 Unity Tag 判断敌我关系。
/// 支持 PVP：客户端只需设置 GameManager.LocalPlayerTeamId，所有单位的敌我判断自动正确。
/// </summary>
public class UnitTeam : MonoBehaviour
{
    [Header("阵营 ID")]
    [Tooltip("0 = 玩家1阵营，1 = 玩家2阵营，2+ = 其他阵营")]
    public int teamId = 0;

    /// <summary>
    /// 判断目标是否为敌人（不同阵营）
    /// </summary>
    public bool IsEnemy(GameObject other)
    {
        if (other == null) return false;
        
        var otherTeam = other.GetComponent<UnitTeam>();
        if (otherTeam == null) return false;
        
        return otherTeam.teamId != this.teamId;
    }

    /// <summary>
    /// 判断目标是否为友军（相同阵营）
    /// </summary>
    public bool IsFriendly(GameObject other)
    {
        if (other == null) return false;
        
        var otherTeam = other.GetComponent<UnitTeam>();
        if (otherTeam == null) return false;
        
        return otherTeam.teamId == this.teamId;
    }

    /// <summary>
    /// 判断是否属于本地玩家阵营
    /// </summary>
    public bool IsLocalPlayerTeam()
    {
        if (GameManager.Instance == null) return teamId == 0;
        return teamId == GameManager.Instance.LocalPlayerTeamId;
    }
}