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

public class ClickGruzCube2 : MonoBehaviour
{
    [SerializeField]
    private float z;
    private Vector3 startpos, endpos;// = new Vector3(-5.4f, 2.5f, 1.5f);
    private Coroutine coroutine, coroutine2;
    float cameraMoveCurTime, cameraMoveMaxTime = 1f;
    float scrollSpeed = 0.5f;
    Renderer rend;
    float eulerAngZ;
    [HideInInspector] public Manager manager;
    
    bool flag_rev;    
    public Texture2D SampleTexture;
    public Texture2D NormalTexture;

    private void Awake()
    {
        manager = GameObject.Find("Manager").GetComponent<Manager>();
        endpos =new Vector3(-5.4f, 2.5f,z);
        rend = GetComponent<Renderer>();
        rend.enabled = false;
        eulerAngZ = transform.localEulerAngles.z;
        RotationArrow(); 
        
        flag_rev = false;
        
    }
    void OnMouseEnter()
    {
        RotationArrow();
        rend.enabled = true;
        coroutine2 = StartCoroutine(GoToArrow());
    }
    void OnMouseExit()
    {
        rend.enabled = false;
        if (coroutine2 != null) StopCoroutine(coroutine2);
    }
    private void OnMouseDown()
    {
        if (manager.viewmode == 1) return;
        cameraMoveCurTime = 0;
        startpos = Camera.main.transform.position;
        coroutine = StartCoroutine(GoToCube());
    }
    IEnumerator GoToCube()
    {
        float d;
        while (cameraMoveCurTime < cameraMoveMaxTime)
        {
            cameraMoveCurTime += Time.deltaTime;
            d = cameraMoveCurTime / cameraMoveMaxTime;
            Camera.main.transform.position = Vector3.Lerp(startpos, endpos, d);
            yield return null; 
        }
        
    }
    void RotationArrow()
    {
        if (Camera.main.transform.localEulerAngles.y > -90 && Camera.main.transform.localEulerAngles.y < 90|| Camera.main.transform.localEulerAngles.y > 270)
        {            
            flag_rev = true;            
        }
        else
        {            
            flag_rev = false;            
        }

    }
    IEnumerator GoToArrow()
    {
        while (rend.enabled)
        {
            float offset = -Time.time * scrollSpeed;
            if (flag_rev)
            {
                rend.material.SetTexture("_MainTex", SampleTexture);
                rend.material.SetTextureOffset("_MainTex", new Vector2(-offset, 0)); 
            }

            else
            {
                rend.material.SetTexture("_MainTex", NormalTexture);
                rend.material.SetTextureOffset("_MainTex", new Vector2(offset, 0));
            }
                
            yield return null; 
        }
        
    }
    public void FixedUpdate()
    {
            if (Input.GetMouseButtonDown(0))
            {
                if (coroutine != null) StopCoroutine(coroutine);

            }
    }

}