using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
using System.Linq;

/// <summary>
/// 先民足迹控制类
/// </summary>
public class XMZJ : MonoBehaviour
{
    public static XMZJ Instance;

    private void Awake()
    {
        Instance = this;
    }

    /// <summary>
    /// 需要隐藏的对象
    /// </summary>
    public GameObject[] objsToHide;

    /// <summary>
    /// 返回按钮
    /// </summary>
    public GameObject objReturn;

    /// <summary>
    /// 天空盒子，主场景及先民足迹天空盒
    /// </summary>
    public Material[] skyboxs;

    /// <summary>
    /// 当前先民足迹的索引，默认为0（主场景）
    /// </summary>
    int currentXMZJIndex;

    /// <summary>
    /// 先民的足迹场景名称前缀
    /// </summary>
    string xmzjScenePre = "XMZJ_Scene";

    /// <summary>
    /// 返回主场景
    /// </summary>
    public void ReturnToMain()
    {
        foreach (var obj in objsToHide)
        {
            obj.SetActive(true);
        }

        objReturn.SetActive(false);
        RenderSettings.skybox = skyboxs[0];
        SceneLoader.Instance.SetCameraPosition(new Vector3(20, 0.515f, 48), new Vector3(0, -10, 0));

        BundleLoader.Instance.UnLoadCurrentScene();

        currentXMZJIndex = 0;
    }

    /// <summary>
    /// 加载先民的足迹场景
    /// </summary>
    /// <param name="index">场景索引</param>
    public void LoadXMZJ(int index)
    {
        if (currentXMZJIndex != index)
        {
            BaseController.CanControl = false;
            currentXMZJIndex = index;
            string sceneName = xmzjScenePre + currentXMZJIndex;
            BundleLoader.Instance.LoadScene(Application.isEditor ? sceneName + "_win" : sceneName, sceneName, XMZJLoaded);
        }
    }

    /// <summary>
    /// 加载结束后的事件处理
    /// </summary>
    void XMZJLoaded()
    {
        // 设置天空盒
        RenderSettings.skybox = skyboxs[currentXMZJIndex];

        foreach (var obj in objsToHide)
        {
            obj.SetActive(false);
        }
        objReturn.SetActive(true);
        

        // 卸载旧场景资源
        BundleLoader.Instance.UnLoadOldScene();

        SetCameraPosition();

        SceneManager.SetActiveScene(SceneManager.GetSceneByName(xmzjScenePre + currentXMZJIndex));

        BaseController.CanControl = true;
    }

    /// <summary>
    /// 设置摄像机在先民足迹场景中的默认位置
    /// </summary>
    void SetCameraPosition()
    {
        GameObject objSP = GameObject.Find("StartPosition" + currentXMZJIndex);
        if (objSP != null)
        {
            CommonData.MainCamera.gameObject.SetActive(false);
            CommonData.MainCamera.transform.position = objSP.transform.position;
            CommonData.MainCamera.transform.rotation = objSP.transform.rotation;
            CommonData.MainCamera.gameObject.SetActive(true);
        }
    }
}