CultivateImmortal/Assets/Scripts/GameScene/UI/LowerPanel.cs

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

public class LowerPanel : BasePanel
{
    //按钮颜色，黄色
    private string imgColor1 = "#FF9F00";
    //按钮字体颜色,褐色
    private string txtColor1 = "#A89500";
    //暗蓝
    private string txtColor2 = "#255746";

    public Button btnFight;
    public Button btnPerson;
    public Button btnBag;
    public Button btnWorld;

    public TextMeshProUGUI txtFight;
    public TextMeshProUGUI txtPerson;
    public TextMeshProUGUI txtBag;
    public TextMeshProUGUI txtWorld;

    //选择的按钮
    private Button btnChoose;
    //选择的文字
    private TextMeshProUGUI txtChoose;

    //已选择的界面
    private BasePanel choosePanel;

    public override void Init()
    {
        //刚进游戏，按钮和文字选择为战斗
        btnChoose = btnFight;
        txtChoose = txtFight;

        //战斗按钮
        btnFight.onClick.AddListener(() =>
        {
            HidePanel(choosePanel);
            SetColor(btnFight, txtFight);
            UIManager.Instance.ShowPanel<BattlePanel>(E_UILayer.Bottom);
            if (UIManager.Instance.GetPanel<TopPanel>() == null)
            {
                UIManager.Instance.ShowPanel<TopPanel>(E_UILayer.System);
            }
            choosePanel = null;
        });
        //人物按钮
        btnPerson.onClick.AddListener(() =>
        {
            if (UIManager.Instance.GetPanel<UserPanel>() == null)
            {
                HidePanel(choosePanel);
                SetColor(btnPerson, txtPerson);
                UIManager.Instance.ShowPanel<UserPanel>(E_UILayer.Middle);
                
                if (UIManager.Instance.GetPanel<TopPanel>() == null)
                {
                    UIManager.Instance.ShowPanel<TopPanel>(E_UILayer.System);
                }
                choosePanel = UIManager.Instance.GetPanel<UserPanel>();
            }
        });
        //背包按钮
        btnBag.onClick.AddListener(() =>
        {
            if (UIManager.Instance.GetPanel<BagPanel>() == null)
            {
                HidePanel(choosePanel);
                SetColor(btnBag, txtBag);
                UIManager.Instance.ShowPanel<BagPanel>(E_UILayer.Middle);
                if (UIManager.Instance.GetPanel<TopPanel>()!=null)
                {
                    UIManager.Instance.HidePanel<TopPanel>();
                }
                choosePanel = UIManager.Instance.GetPanel<BagPanel>();
            }
        });
        //世界按钮
        btnWorld.onClick.AddListener(() =>
        {
            if (UIManager.Instance.GetPanel<WorldPanel>() == null)
            {
                HidePanel(choosePanel);
                SetColor(btnWorld, txtWorld);
                UIManager.Instance.ShowPanel<WorldPanel>(E_UILayer.Middle);
                if (UIManager.Instance.GetPanel<TopPanel>() != null)
                {
                    UIManager.Instance.HidePanel<TopPanel>();
                }
                choosePanel = UIManager.Instance.GetPanel<WorldPanel>();
            }
        });
    }

    /// <summary>
    /// 按钮点击改变按钮的颜色
    /// </summary>
    /// <param name="btn"></param>
    /// <param name="txt"></param>
    public void SetColor(Button btn, TextMeshProUGUI txt)
    {
        Color imgColor, txtColor;
        //设置颜色前先把上一次的按钮颜色重置
        if (btnChoose!=null&&txtChoose!=null)
        {
            btnChoose.image.color = Color.white;
            if (ColorUtility.TryParseHtmlString(txtColor2, out txtColor))
            {
                txtChoose.color = txtColor;
            }
        }

        //然后设置此次点击的按钮颜色
        if (ColorUtility.TryParseHtmlString(imgColor1, out imgColor))
        {
            btn.image.color = imgColor;
            if (ColorUtility.TryParseHtmlString(txtColor1, out txtColor))
            {
                txt.color = txtColor;

            }
        }

        //设置为新的按钮，方便下一次重置颜色
        btnChoose = btn;
        txtChoose = txt;
    }

    //隐藏面板
    private void HidePanel(BasePanel choosePanel)
    {
        //当选择为空时，返回
        if (choosePanel == null)
        {
            return;
        }
        switch (choosePanel)
        {
            case UserPanel:
                UIManager.Instance.HidePanel<UserPanel>();
                break;
            case BagPanel:
                UIManager.Instance.HidePanel<BagPanel>();
                break;
            case WorldPanel:
                UIManager.Instance.HidePanel<WorldPanel>();
                break;
        }
    }
}