问数组集初值问题

EN

using UnityEngine;
using UnityEngine.UI;

public class Hearts : MonoBehaviour
{

    public Sprite[] initialHeart;
    private int hearts;
    private int currentHearts;
    // Use this for initialization

    //Used for chaching Image so that you won't be doing GetComponent<Image>(); each time
    Image heartImage;

    void Start()
    {
        //Cache the Image once so that you won't be doing GetComponent<Image>(); each time
        heartImage = GetComponent<Image>();
        heartImage.sprite = initialHeart[0];
        hearts = initialHeart.Length;
        }

    // Update is called once per frame
    void Update()
    {
    }

    public bool TakeHeart()
    {
        if (hearts < 0)
        {
            return false;
        }

        if (currentHearts < (hearts - 1))
        {
            currentHearts += 1;
            heartImage.sprite = initialHeart[currentHearts];
            return true;
        }
        else
        {
            return false;
        }
    }

    public bool AddHeart()
    {
        if (currentHearts > 0)
        {
            currentHearts -= 1;
            heartImage.sprite = initialHeart[currentHearts];
            return true;
        }
        else
        {
            return false;

        }
    }
}

if (currentHearts <(hearts - 1))
{
currentHearts + = 1;
heartImage.sprite = initialHeart [currentHearts]; ;
return true;
}