using UnityEngine;
using UnityEditor;
using System.Collections.Generic;

namespace BF
{
    public class SimpleAtlas : ScriptableObject
    {
        [SerializeField]
        List<Sprite> spriteList = new List<Sprite>();
        public bool AddSprite(Sprite sprite)
        {
            if (sprite == null)
            {
                return false;
            }
            spriteList.Add(sprite);
            return true;
        }

        public void RemoveSprite(Sprite sprite)
        {
            if (sprite == null)
            {
                return;
            }
            spriteList.Remove(sprite);
        }

        public void RemoveNullSprite()
        {
            EnsureWithoutNull();
        }

        public bool Contains(Sprite sprite)
        {
            return spriteList.Contains(sprite);
        }

        public void Clear()
        {
            spriteList.Clear();
        }

        public int GetCount()
        {
            return spriteList.Count;
        }

        void EnsureWithoutNull()
        {
            int count = spriteList.Count;
            for (int i = count - 1; i >= 0; i--)
            {
                if (spriteList[i] == null)
                {
                    spriteList.RemoveAt(i);
                }
            }
        }

        public Sprite GetSprite(int index)
        {
			if (index >= 0 && index < spriteList.Count)
			{
				return spriteList[index];
			}
			return null;
        }

		public List<Sprite> GetSpriteList()
		{
			return spriteList;
		}
    }
}