using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class Move : MonoBehaviour,IPointerDownHandler, IPointerUpHandler
{
    public Camera camera;
    
    public int direction; // 方向 1:上 2:下 3:左 4:右
    private bool isMoving=false;
    public BoxCollider boxCollider;
    private Vector3 minBounds;
    private Vector3 maxBounds;
    private float rotationY = 0.0f; // Y轴旋转角度

    // 接近目标
    public List<GameObject> targets; // 目标物体
    
    void Start()
    {
        // 计算边界
        minBounds = boxCollider.bounds.min;
        maxBounds = boxCollider.bounds.max;
    }
    void Update()
    {
        // 如果正在移动，向前移动摄像机
        if (direction==1 && isMoving && camera != null)
        {
            if (targets!= null && targets.Count > 0)
            {
                foreach (GameObject target in targets)
                {
                    float distance = Vector3.Distance(camera.transform.position, target.transform.position);
                    if (distance < 0.5f)
                    {
                        
                    }

                }
            }

            Vector3 newPosition= camera.transform.forward * 2f * Time.deltaTime+camera.transform.position;
            // 限制物体位置在边界内
            newPosition.x = Mathf.Clamp(newPosition.x, minBounds.x, maxBounds.x);
            newPosition.z = Mathf.Clamp(newPosition.z, minBounds.z, maxBounds.z);

            camera.transform.position = newPosition;
        }
        if (direction==2 && isMoving && camera != null)
        {
            
            Vector3 newPosition= camera.transform.forward * -2f * Time.deltaTime+camera.transform.position;
            // 限制物体位置在边界内
            newPosition.x = Mathf.Clamp(newPosition.x, minBounds.x, maxBounds.x);
            newPosition.z = Mathf.Clamp(newPosition.z, minBounds.z, maxBounds.z);

            camera.transform.position = newPosition;
        }
        if (direction==3 && isMoving && camera != null)
        {
            
            Vector3 newPosition= camera.transform.right * -2f * Time.deltaTime+camera.transform.position;
            // 限制物体位置在边界内
            newPosition.x = Mathf.Clamp(newPosition.x, minBounds.x, maxBounds.x);
            newPosition.z = Mathf.Clamp(newPosition.z, minBounds.z, maxBounds.z);

            camera.transform.position = newPosition;
        }
        if (direction==4 && isMoving && camera != null)
        {
            
            Vector3 newPosition= camera.transform.right * 2f * Time.deltaTime+camera.transform.position;
            // 限制物体位置在边界内
            newPosition.x = Mathf.Clamp(newPosition.x, minBounds.x, maxBounds.x);
            newPosition.z = Mathf.Clamp(newPosition.z, minBounds.z, maxBounds.z);
            camera.transform.position = newPosition;
        }
        if (direction==5 && isMoving && camera != null)
        {
            camera.transform.Rotate(Vector3.up, 50f * Time.deltaTime);
        }
        if (direction==6 && isMoving && camera != null)
        {
            camera.transform.Rotate(Vector3.up, -50f * Time.deltaTime);
        }
        
        // 检测右键是否被按下
        if (Input.GetMouseButton(0)) // 1表示右键
        {
            // 获取鼠标移动的增量
            float mouseX = Input.GetAxis("Mouse X");
            rotationY = camera.transform.localEulerAngles.y;
            // 计算旋转
            rotationY += mouseX * 1f;

            // 应用旋转到摄像头
            camera.transform.localRotation = Quaternion.Euler(0, rotationY, 0);
        }
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        isMoving = true;
        gameObject.GetComponent<Image>().color = new Color(1, 1, 1, 1f);
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        isMoving = false;
        gameObject.GetComponent<Image>().color = new Color(1, 1, 1, 0.2f);
    }
}