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

public class MercuryDeath : MonoBehaviour
{
    [Header("Текстури")]
    public Texture2D mercury100;
    public Texture2D mercury70;
    public Texture2D mercury50;
    public Texture2D mercury30;
    public Texture2D mercury0;

    [Header("Мертва планета")]
    public Texture2D deadTexture;

    [Range(0f, 1f)]
    public float exosphereLevel = 1f;

    private Renderer planetRenderer;
    private Material mat;
    private float prevLevel = -1f;

    void Start()
    {
        planetRenderer = GetComponent<Renderer>();
        if (planetRenderer == null)
            planetRenderer = GetComponentInChildren<Renderer>();
        if (planetRenderer != null)
            mat = planetRenderer.material;
    }

    public void ResetTexture()
    {
        exosphereLevel = 1f;
        prevLevel = -1f;
        if (mat != null && mercury100 != null)
            mat.SetTexture("_BaseMap", mercury100);
    }

    void Update()
    {
        if (mat == null) return;
        if (Mathf.Approximately(exosphereLevel, prevLevel)) return;
        prevLevel = exosphereLevel;
        UpdateTexture();
    }

    void UpdateTexture()
    {
        Texture2D tex = exosphereLevel <= 0f ? deadTexture : GetTexture(exosphereLevel);
        if (tex != null)
            mat.SetTexture("_BaseMap", tex);
    }

    Texture2D GetTexture(float level)
    {
        if (level >= 0.7f) return mercury100;
        else if (level >= 0.5f) return mercury70;
        else if (level >= 0.3f) return mercury50;
        else if (level > 0f) return mercury30;
        else return mercury0;
    }

}