using UnityEngine;
using UnityEngine.UI;

public class NewMonoBehaviourScript : MonoBehaviour
{
    
    private GridLayoutGroup _gridLayoutGroup;
    private RectTransform _rectTransform;
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        _gridLayoutGroup = GetComponent<GridLayoutGroup>();
        _rectTransform = GetComponent<RectTransform>();
    }

    // Update is called once per frame
    void Update()
    {
        var max = 
            (_rectTransform.rect.width / (_gridLayoutGroup.cellSize.x+_gridLayoutGroup.spacing.x))  * 
            (_rectTransform.rect.height / _gridLayoutGroup.cellSize.y+_gridLayoutGroup.spacing.y);
        var current = transform.childCount;

        if (current / max >= 0.8f)
        {
            _gridLayoutGroup.cellSize = new Vector2(_gridLayoutGroup.cellSize.x * 0.9f, _gridLayoutGroup.cellSize.y * 0.9f);
        }
    }
}