UMVCL7——MVP基本实例

MVP基本实例

还是和上一章相同的UI需求

假设我们有一个主面板，它的各个UI控件需要的效果如下

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有一个选角面板，它的各个UI控件需要的效果如下

​​

该UI的MVC的代码逻辑如下：

Model层

直接使用MVC那一章的Model代码即可

View层

相比MVC的那一章，这里的View层代码不一定需要再提供更新控件显示的方法了，只需要管理控件即可
更新控件的实现交给Presenter(主持人)层脚本实现

MVP_MainView.cs

using UnityEngine;
using UnityEngine.UI;

public class MVP_MainView : MonoBehaviour
{
    public Text txtName;
    public Text txtLev;
    public Text txtMoney;
    public Text txtGem;
    public Text txtPower;

    public Button btnRole;

    //更新方法是可选的
    //因为接下来 你可以到P层脚本里面通过访问控件去修改

    //public void UpdateInfo(string name, int lev, int money, int gem, int power)
    //{
    //    txtName.text = name;
    //    txtLev.text = "LV." + lev.ToString();
    //    txtMoney.text = money.ToString();
    //    txtGem.text = gem.ToString();
    //    txtPower.text = power.ToString();
    //}
}

MVP_RoleView.cs

using UnityEngine;
using UnityEngine.UI;

public class MVP_RoleView : MonoBehaviour
{
    public Text txtLev;
    public Text txtHp;
    public Text txtAtk;
    public Text txtDef;
    public Text txtCrit;
    public Text txtMiss;
    public Text txtLuck;

    public Button btnClose;
    public Button btnLevUp;

    //更新方法是可选的
    //因为接下来 你可以到P层脚本里面通过访问控件去修改
}

Presenter层

相比于MVC的Controller层，Presenter层脚本自己实现了对View层的UI控件的更新，
这也意味着Model层的数据不需要再传入View层让View层更新
因此，Presenter层切断了View层和Model层的关系，而是由Presenter层读取Model层数据再为View层更新控件

MainPresenter.cs

using UnityEngine;

public class MainPresenter : MonoBehaviour
{
    private static MainPresenter presenter = null;
    public static MainPresenter Instance => presenter;

    //在Presenter中得到界面
    private MVP_MainView mainView;

    private void Start()
    {
        mainView = GetComponent<MVP_MainView>();
        //不需要执行View的UpdateInfo，直接执行自己的方法
        UpdateInfo(PlayerModel.Instance);
        PlayerModel.Instance.AddEventListener(UpdateInfo);
        //界面事件的监听，来处理对应的业务逻辑
        mainView.btnRole.onClick.AddListener(() =>
        {
            //显示角色面板
            RolePresenter.ShowMe();
        });
    }

    private void OnDestroy()
    {
        PlayerModel.Instance.RemoveEventListener(UpdateInfo);
    }

    private void UpdateInfo(PlayerModel player)
    {
        //以前这里是把数据M传到V中去更新，现在全部由P来做，这就断绝了M和V的来往
        if (mainView != null)
        {
            mainView.txtName.text = player.Name;
            mainView.txtLev.text = "LV." + player.Level;
            mainView.txtMoney.text = player.Money.ToString();
            mainView.txtGem.text = player.Gem.ToString();
            mainView.txtPower.text = player.Power.ToString();
        }
    }

    public static void ShowMe()
    {
        if (presenter == null)
        {
            //实例化面板对象
            GameObject res = Resources.Load<GameObject>("UI/MainPanel");
            GameObject obj = Instantiate(res);
            obj.transform.SetParent(GameObject.Find("Canvas").transform, false);
            presenter = obj.GetComponent<MainPresenter>();
        }
        presenter.gameObject.SetActive(true);
    }

    public static void HideMe()
    {
        if (presenter != null)
            presenter.gameObject.SetActive(false);
    }
}

RolePresenter.cs

using UnityEngine;

public class RolePresenter : MonoBehaviour
{
    private MVP_RoleView roleView;

    private static RolePresenter presenter = null;

    public static RolePresenter Presenter => presenter;

    void Start()
    {
        roleView = GetComponent<MVP_RoleView>();
        //不需要执行View的UpdateInfo，直接执行自己的方法
        UpdateInfo(PlayerModel.Instance);
        PlayerModel.Instance.AddEventListener(UpdateInfo);
        roleView.btnClose.onClick.AddListener(() =>
        {
            HideMe();
        });
        roleView.btnLevUp.onClick.AddListener(() =>
        {
            PlayerModel.Instance.LevelUp();
        });
    }

    private void OnDestroy()
    {
        PlayerModel.Instance.RemoveEventListener(UpdateInfo);
    }

    private void UpdateInfo(PlayerModel player)
    {
        if (roleView != null)
        {
            //以前这里是把数据M传到V中去更新，现在全部由P来做，这就断绝了M和V的来往
            roleView.txtLev.text = "LV." + player.Level;
            roleView.txtHp.text = player.Hp.ToString();
            roleView.txtAtk.text = player.Atk.ToString();
            roleView.txtDef.text = player.Def.ToString();
            roleView.txtCrit.text = player.Crit.ToString();
            roleView.txtMiss.text = player.Miss.ToString();
            roleView.txtLuck.text = player.Luck.ToString();
        }
    }

    public static void ShowMe()
    {
        if (presenter == null)
        {
            //实例化面板对象
            GameObject res = Resources.Load<GameObject>("UI/RolePanel");
            GameObject obj = Instantiate(res);
            obj.transform.SetParent(GameObject.Find("Canvas").transform, false);
            presenter = obj.GetComponent<RolePresenter>();
        }
        presenter.gameObject.SetActive(true);
    }

    public static void HideMe()
    {
        if (presenter != null)
            presenter.gameObject.SetActive(false);
    }
}