using UnityEngine;
using UnityEngine.UI;

namespace GameFramework
{
    /// <summary>
    /// 得分显示组件。
    /// 订阅 ScoreManager.onScoreChanged 事件，自动更新 Text。
    /// 挂到场景中带有 Text 组件的 Canvas 元素上即可。
    /// </summary>
    public class ScoreDisplay : MonoBehaviour
    {
        [SerializeField] Text scoreText;
        [SerializeField] string format = "{0}";

        void OnEnable()
        {
            ScoreManager.onScoreChanged += UpdateText;
        }

        void OnDisable()
        {
            ScoreManager.onScoreChanged -= UpdateText;
        }

        void Start()
        {
            if (scoreText == null)
                scoreText = GetComponent<Text>();
            if (ScoreManager.Instance != null)
                UpdateText(ScoreManager.Instance.CurrentScore);
            else
                UpdateText(0);
        }

        void UpdateText(int score)
        {
            if (scoreText != null)
                scoreText.text = string.Format(format, score);
        }
    }
}