开始和结束界面实现、RectHelper

开始界面

先新建一个Scene，命名为GameStart，在其中新建一个空对象，命名为UI。

在ViewController——UI文件夹中新建UIGameStart脚本，挂载在UI上。

using System;
using UnityEngine;
using UnityEngine.SceneManagement;

namespace ShootingEditor2D
{
    public class UIGameStart : MonoBehaviour
    {

        private readonly Lazy<GUIStyle> mLableStyle = new Lazy<GUIStyle>(() =>
        {
            return new GUIStyle(GUI.skin.label)
            {
                fontSize = 60,
                alignment = TextAnchor.MiddleCenter
            };
        });

        private readonly Lazy<GUIStyle> mButtonStyle = new Lazy<GUIStyle>(() =>
        {
            return new GUIStyle(GUI.skin.button)
            {
                fontSize = 40,
                alignment = TextAnchor.MiddleCenter
            };
        });

        private void OnGUI()
        {
            var labelWidth = 600f;
            var labelHeight = 100f;
            var labelSize = new Vector2(labelWidth, labelHeight);
            var labelPosition = new Vector2(Screen.width - labelWidth, Screen.height - labelHeight)*0.5f;
            var labelRect = new Rect(labelPosition, labelSize);
            GUI.Label(labelRect,"ShootingEditor2D",mLableStyle.Value);

            var buttonWidth = 300f;
            var buttonHeight = 100f;
            var buttonSize = new Vector2(buttonWidth, buttonHeight);
            var buttonPosition = new Vector2(Screen.width - buttonWidth, Screen.height - buttonHeight) * 0.5f + Vector2.up * 150f;
            var buttonRect = new Rect(buttonPosition, buttonSize);
            if (GUI.Button(buttonRect, "开始游戏", mButtonStyle.Value))
            {
                SceneManager.LoadSceneAsync("SampleScene");
            }
        }
    }
}

结束界面

先新建一个Scene，命名为GameOver，在其中新建一个空对象，命名为UI。

在ViewController——UI文件夹中新建UIGameOver脚本，挂载在UI上。

using System;
using UnityEngine;
using UnityEngine.SceneManagement;

namespace ShootingEditor2D
{
    public class UIGameOver : MonoBehaviour
    {

        private readonly Lazy<GUIStyle> mLableStyle = new Lazy<GUIStyle>(() =>
        {
            return new GUIStyle(GUI.skin.label)
            {
                fontSize = 60,
                alignment = TextAnchor.MiddleCenter
            };
        });

        private readonly Lazy<GUIStyle> mButtonStyle = new Lazy<GUIStyle>(() =>
        {
            return new GUIStyle(GUI.skin.button)
            {
                fontSize = 40,
                alignment = TextAnchor.MiddleCenter
            };
        });

        private void OnGUI()
        {
            var labelWidth = 600f;
            var labelHeight = 100f;
            var labelSize = new Vector2(labelWidth, labelHeight);
            var labelPosition = new Vector2(Screen.width - labelWidth, Screen.height - labelHeight)*0.5f;
            var labelRect = new Rect(labelPosition, labelSize);
            GUI.Label(labelRect,"游戏结束",mLableStyle.Value);

            var buttonWidth = 300f;
            var buttonHeight = 100f;
            var buttonSize = new Vector2(buttonWidth, buttonHeight);
            var buttonPosition = new Vector2(Screen.width - buttonWidth, Screen.height - buttonHeight) * 0.5f + Vector2.up * 150f;
            var buttonRect = new Rect(buttonPosition, buttonSize);
            if (GUI.Button(buttonRect, "回到首页", mButtonStyle.Value))
            {
                SceneManager.LoadSceneAsync("GameStart");
            }
        }
    }
}

将GameStart和GameOver场景都放在Build Settings里

修改UIGamePass脚本

//...
using UnityEngine.SceneManagement;

namespace ShootingEditor2D
{
    public class UIGamePass : MonoBehaviour
    {
        //...

        private void OnGUI()
        {
            //...
            if (GUI.Button(buttonRect, "返回首页", mButtonStyle.Value))
            {
                SceneManager.LoadSceneAsync("GameStart");
            }
        }
    }
}

触发结束界面

修改HurtPlayerCommand

using FrameWorkDesign;
using UnityEngine.SceneManagement;

namespace ShootingEditor2D
{
    public class HurtPlayerCommand : AbstractCommand
    {
        private readonly int mHurt;
        public HurtPlayerCommand(int hurt = 1)
        {
            mHurt = hurt;
        }
        protected override void OnExecute()
        {
            var playerModel = this.GetModel<IPlayerModel>();//
            playerModel.HP.Value -= mHurt;

            if (playerModel.HP.Value <= 0)
            {
                SceneManager.LoadSceneAsync("GameOver");
            }

        }
    }
}

这样游戏开始和结束界面就做好了。

注意游戏还没有做数据重置，重新开始的话生命值会降为负数

添加RectHelper工具层

设定一个工具，用来解决绘制IMGUI界面时初始代码量又多又重复的问题。

在Scripts文件夹内新建Utility文件夹，在其中新建RectHelper文件

using UnityEngine;

namespace ShootingEditor2D
{
    public static class RectHelper 
    {
        public static Rect RectForAnchorCenter(float x, float y, float width, float height)
        {
            var finalX = x - width*0.5f;
            var finalY = y - height*0.5f;
            return new Rect(finalX, finalY, width, height);
        }

        public static Rect RectForAnchorCenter(Vector2 pos,Vector2 size)
        {
            var finalPos = pos - size * 0.5f;
            return new Rect(finalPos, size);
        }
    }
}

静态类不能实现接口，这套框架的Utility层可以接入任何第三方插件和库，并不需要每个都继承IUtility并在Architecture注册

重构UIGameStart

using System;
using UnityEngine;
using UnityEngine.SceneManagement;

namespace ShootingEditor2D
{
    public class UIGameStart : MonoBehaviour
    {

        //...

        private void OnGUI()
        {
            
            var labelRect = RectHelper.RectForAnchorCenter(Screen.width * 0.5f,Screen.height * 0.5f,600f, 100f);
            GUI.Label(labelRect,"ShootingEditor2D",mLableStyle.Value);

            
            var buttonRect = RectHelper.RectForAnchorCenter(Screen.width * 0.5f, Screen.height * 0.5f + 150f, 300f, 100f);
            if (GUI.Button(buttonRect, "开始游戏", mButtonStyle.Value))
            {
                SceneManager.LoadSceneAsync("SampleScene");
            }
        }
    }
}

UIGameOver、UIGamePass都按照上面的代码重构即可，这里就不贴出代码了。