Danro/Assets/Scripts/UI/LevelButton.cs

using UnityEngine;
using UnityEngine.UI;
using TMPro;

using RR.Game2D.Core.Managers;

namespace RR.Common.UI
{
    public class LevelButton : MonoBehaviour
    {
        [SerializeField] private TextMeshProUGUI title;
        [SerializeField] private Button button;

        private int _world;
        private int _stage;

        public void Setup(
            string levelSceneName,
            int levelWorld,
            int levelStage,
            Selectable onUp = null,
            Selectable onDown = null,
            Selectable onLeft = null,
            Selectable onRight = null
            )
        {
            _world = levelWorld;
            _stage = levelStage;
            if (title) title.text = levelSceneName; // "1-3, 1-1 и т.д."
            
            if (!button)
            {
                button = GetComponentInChildren<Button>();
                if (!button)
                {
                    Debug.LogError($"[LevelButton] Button component is missing on {gameObject.name}!");
                    return;
                }
            }
            
            button.interactable = true;
            button.onClick.RemoveAllListeners();
            button.onClick.AddListener(OnClick);
            
            // Настройка навигации, если передан хотя бы один параметр
            if (onUp == null && onDown == null && onLeft == null && onRight == null) return;
            Navigation nav = button.navigation;
            nav.mode = Navigation.Mode.Explicit;
            if (onUp != null) nav.selectOnUp = onUp;
            if (onDown != null) nav.selectOnDown = onDown;
            if (onLeft != null) nav.selectOnLeft = onLeft;
            if (onRight != null) nav.selectOnRight = onRight;
            button.navigation = nav;
        }

        public void SetColor(Color newColor)
        {
            ColorBlock newColors = button.colors;
            newColors.normalColor = Darken(newColor, 0.65f);
            newColors.highlightedColor = Darken(newColor, 0.90f);
            newColors.selectedColor = newColor;
            newColors.pressedColor = Darken(newColor, 0.80f);
            button.colors = newColors;
        }

        private void OnClick()
        {
            GameManager.Instance.LoadLevel(_world, _stage);
        }

        private static Color Darken(Color c, float factor)
            => new Color(c.r * factor, c.g * factor, c.b * factor, c.a);
    }
}