PuppyClient/Assets/Resources/VoiceAndManu/MenuController.cs

using System;
using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UIElements;

/* 本文件控制游戏右侧的菜单按键逻辑
 * 左侧的菜单按键逻辑
 */

public class MenuController : MonoBehaviour
{
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    private VisualElement mainMenu, dogIcon, dogList;
    private List<VisualElement> subMenu = new();
    //private bool isSubMenuShow = false;
    private GameObject uiPlaceholder;       // Manu会控制其他子菜单显示和隐藏，因此所有子菜单都必须挂载在UI Placeholder下
    private GameObject vamUI;      // vamUI = Voice and Manu UI; 
    private GameObject shoppingUI, statusUI, warehouseUI;       // 对应点击菜单后展开的几个子菜单
    private List<Label> dogNames = new();

    private static bool isMenuShowed = false;        // 右侧子菜单是否展开
    private static DateTime menuShowTime;        // 菜单展开时间

    void OnEnable()
    {
        // 找到需要控制的其他子菜单
        uiPlaceholder = GameObject.Find("UI Placeholder");
        vamUI = uiPlaceholder.transform.Find("VoiceAndMenu").gameObject;
        shoppingUI = uiPlaceholder.transform.Find("ShoppingUI").gameObject;
        statusUI = uiPlaceholder.transform.Find("Status").gameObject;
        warehouseUI = uiPlaceholder.transform.Find("Warehouse").gameObject;

        // 找到当前菜单下的项目
        var root = GetComponent<UIDocument>().rootVisualElement;
        var menuArea = root.Q<VisualElement>("menuArea");
        mainMenu = menuArea.Q<VisualElement>("mainMenu");
        var home = menuArea.Q<VisualElement>("home");
        subMenu.Add(home);
        var playground = menuArea.Q<VisualElement>("playground");
        subMenu.Add(playground);
        var shop = menuArea.Q<VisualElement>("shop");
        subMenu.Add(shop);
        var warehouse = menuArea.Q<VisualElement>("warehouse");
        subMenu.Add(warehouse);
        var cameraBtn = menuArea.Q<VisualElement>("camera");
        subMenu.Add(cameraBtn);
        var status = menuArea.Q<VisualElement>("status");
        subMenu.Add(status);
        

        mainMenu.RegisterCallback<ClickEvent>(e => MainMenuClick(e));
        // root加载完成后，所有element算出位置后再进行计算
        root.RegisterCallback<GeometryChangedEvent>(e => OnMainMenuClickGeometryChanged(e));

        // 绑定按键点击事件
        playground.RegisterCallback<ClickEvent>(e => PlayGroundClick(e));
        shop.RegisterCallback<ClickEvent>(e => ShopClick(e));
        warehouse.RegisterCallback<ClickEvent>(e => WarehouseClick(e));
        status.RegisterCallback<ClickEvent>(e => StatusClick(e));
        cameraBtn.RegisterCallback<ClickEvent>(e => CameraClick(e));

        //var root = GetComponent<UIDocument>().rootVisualElement;
        dogIcon = root.Q<VisualElement>("dogMenu").Q<VisualElement>("dogIcon");
        dogList = root.Q<VisualElement>("dogMenu").Q<VisualElement>("dogList");

        DogNameInit();      // 初始化狗的名字，这里当菜单重新激活后再次加载

        dogIcon.RegisterCallback<ClickEvent>(e => DogIconClick(e));

    }

    private void Start()
    {
        DogNameInit();      // 初始化狗的名字，首次加载
    }

    private void OnDisable()
    {
        subMenu.Clear();       // 因为启动时候调用OnEable数据会被重复加载
    }

    // Update is called once per frame
    void FixedUpdate()
    {
        CollapseMenuCheck();        // 定时收起菜单
        ScaleDogName();         // 放大缩小选中狗的名字
    }

    #region 右侧按键控制
    Vector2 CalcPosition(Vector2 curPosition, float angle, float distance)
    {
        float radians = angle * Mathf.Deg2Rad;
        float x = curPosition.x + distance * Mathf.Cos(radians);
        float y = curPosition.y - distance * Mathf.Sin(radians);
        Vector2 newPosition = new Vector2(x, y);
        return new Vector2(x, y);
    }

    // 初始化所有按键的位置
    void InitialSubMenu()
    {
        foreach (var subMenu in subMenu)
        {
            subMenu.style.left = mainMenu.resolvedStyle.left;
            subMenu.style.top = mainMenu.resolvedStyle.top;
            subMenu.visible = false;
        }
    }

    // 点击主按键后所有子按键展开并显示
    void MainMenuClick(ClickEvent evt)
    {
        if (isMenuShowed)
        {
            MenuReset();
            return;
        }
        // curAngle 初始角度，angleDelta 2个子菜单之间角度，distance 弹出距离，showTimer 显示时间
        float curAngle = 75f;
        float angleDelta = 40f;
        float distance = 70f;
        //float showTimer = 3.0f;
        foreach (var subMenu in subMenu)
        {
            subMenu.visible = true;
            var newPosition = CalcPosition(mainMenu.layout.position, curAngle, distance);
            //subMenu.layout.position.Set(newPosition.x, newPosition.y);
            subMenu.style.left = newPosition.x;
            subMenu.style.top = newPosition.y;
            //if (subMenu.name == "home")
            //{
            //    Debug.Log(subMenu.name + " " + newPosition.x + " " + newPosition.y);
            //}
            curAngle += angleDelta;
        }
        mainMenu.transform.scale = new Vector2(0.8f, 0.8f);
        isMenuShowed = true;
        menuShowTime = DateTime.Now;
    }

    // 初始化后屏幕尺寸变化时候调用。在此处应用于第一次屏幕初始化完成。
    void OnMainMenuClickGeometryChanged(GeometryChangedEvent evt)
    {
        InitialSubMenu();
    }

    void MenuReset()
    {
        //yield return new WaitForSeconds(3.0f);
        mainMenu.transform.scale = new Vector2(1.0f, 1.0f);
        isMenuShowed = false;
        InitialSubMenu();
    }

    void PlayGroundClick(ClickEvent evt)
    {
        SceneManager.LoadScene("Playground", LoadSceneMode.Single);
    }

    void ShopClick(ClickEvent evt)
    {
        vamUI.SetActive(false);
        shoppingUI.SetActive(true);
    }

    void WarehouseClick(ClickEvent evt)
    {
        vamUI.SetActive(false);
        warehouseUI.SetActive(true);
    }

    void StatusClick(ClickEvent evt)
    {
        vamUI.SetActive(false);
        statusUI.SetActive(true);
    }

    void CameraClick(ClickEvent evt)
    {

    }

    // 菜单打开后收回菜单
    void CollapseMenuCheck()
    {
        if (isMenuShowed)
        {
            // 计算两个时间点之间的差值
            TimeSpan difference = DateTime.Now - menuShowTime;

            // 检查差值是否超过3秒
            if (difference.TotalSeconds > 3)
            {
                MenuReset();
            }
        }
    }
    #endregion

    void DogIconClick(ClickEvent e)
    {
        Debug.Log("DogIconClick");
        if (dogList.visible == false)
        {
            dogList.visible = true;
        }
        else
        {
            dogList.visible = false;
        }

    }


    #region 左侧菜单控制
    // 点击狗的名字时候处理
    void DogNameClick(ClickEvent e, int index)
    {
        GameData.focusDog = index;
        if (GameData.homeCamFocusDog == index)
        {
            // 重复点击狗的名字，恢复广角，所有狗的名字显示一样大小
            HomeController.dogCam.Priority = 1;
            HomeController.playerCam.Priority = 10;
            GameData.homeCamFocusDog = 100;     // 100表示不聚焦
            //dogNames[index].transform.scale = new Vector2(1f, 1f);

        }
        else
        {
            GameData.homeCamFocusDog = index;
            //dogNames[index].transform.scale = new Vector2(1.2f, 1.2f);
            HomeController.dogCam.m_LookAt = HomeController.dogsInScene[index].gameObject.transform;
            HomeController.dogCam.Priority = 10;
            HomeController.playerCam.Priority = 1;
            HomeController.lastCameraChange = DateTime.Now;
        }
        
        if (dogList.visible == true) { dogList.visible = false; }   
    }

    // 初始化狗的名字
    void DogNameInit()
    {
        dogNames.Clear();       // 清空Label列表
        foreach (Label child in dogList.Children())     // 寻找Label元素加入列表
        {
            dogNames.Add(child);
        }

        // 注入狗的名字，最多注入3只狗
        for (int i = 0; i < Math.Min(UserProperty.dogs.Count, 3); i++)
        {
            int index = i;
            dogNames[i].style.display = DisplayStyle.Flex;
            dogNames[i].text = UserProperty.dogs[i].dog_name;
            dogNames[i].RegisterCallback<ClickEvent>(e => DogNameClick(e, index));
        }
    }

    // 调整狗的名字大小
    void ScaleDogName()
    {

        for (int i = 0; i < UserProperty.dogs.Count; i++)
        {
            if (i == GameData.homeCamFocusDog)
            {
                dogNames[i].transform.scale = new Vector2(1.2f, 1.2f);
            }
            else
            {
                dogNames[i].transform.scale = new Vector2(1f, 1f);
            }
        }
    }
    #endregion
}

public static class MenuData
{
    public static bool isMenuShowed = false;
    public static DateTime menuShowTime;
}