我如何在自己的课堂中绘制一个精灵？ [英] How can I draw a sprite in it's own class?

问题描述

我试图和一位朋友一起编写游戏，我对如何绘制精灵感到困惑。

 命名空间SweetGeorgiaBrown 
 {
 ///< ;总结> 
 ///这是您游戏的主要类型
 ///< / summary> 
 public class Game1：Microsoft.Xna.Framework.Game 
 {
 enum GameStates {TitleScreen，Overworld，Menu，Battle，GameOver}; 
 GameStates gameState = GameStates.Battle; 
 GraphicsDeviceManager图形; 
 SpriteBatch spriteBatch; 
 Texture2D dinoTex; 
 Texture2D alienTex; 
 Texture2D robotTex; 
 Texture2D eroboTex; 
 SpriteFont基本; 
 
 
 private Vector2 textLocation = new Vector2（20，20）; 
 public Game1（）
 {
 graphics = new GraphicsDeviceManager（this）; 
 Content.RootDirectory =Content; 
 
 
} 
 
 public class Health 
 {
 public static int dinoHP = 300; 
 public static int alienHP = 200; 
 public static int robotHP = 100; 
} 
 
 ///< summary> 
 ///允许游戏在开始运行之前执行它需要的任何初始化。 
 ///这是它可以查询任何所需服务并加载任何非图形
 ///相关内容的地方。调用base.Initialize将枚举任何组件
 ///并初始化它们。 
 ///< / summary> 
 protected override void Initialize（）
 {
 // TODO：在这里添加初始化逻辑
 
 base.Initialize（）; 
} 
 
 ///< summary> 
 /// LoadContent将在每个游戏中调用一次，并且是加载
 ///所有内容的地方。 
 ///< / summary> 
 protected override void LoadContent（）
 {
 //创建一个新的SpriteBatch，可以用来绘制纹理。 
 spriteBatch =新的SpriteBatch（GraphicsDevice）; 
 dinoTex = Content.Load< Texture2D>（@Sprites\dino\dinoFrontOvwld）; 
 alienTex = Content.Load< Texture2D>（@Sprites\\alien\alienFrontOvwld）; 
 robotTex = Content.Load< Texture2D>（@Sprites \robot \robotFrontOvwld）; 
 eroboTex = Content.Load< Texture2D>（@Sprites \robo1\robo1OvwldFront）; 
 
 basic = Content.Load< SpriteFont>（@Fonts \Basic）; 
 // TODO：使用this.Content在这里加载您的游戏内容
} 
 
 ///< summary> 
 /// UnloadContent将在每场比赛中调用一次，并且是卸载
 ///全部内容的地方。 
 ///< / summary> 
 protected override void UnloadContent（）
 {
 // TODO：在此处卸载任何非ContentManager内容
} 
 
 ///< summary> 
 ///允许游戏运行逻辑，比如更新世界，
 ///检查冲突，收集输入和播放音频。 
 ///< / summary> 
 ///< param name =gameTime>提供时间值的快照。< / param> 
 protected override void Update（GameTime gameTime）
 {
 //允许游戏退出
 if（GamePad.GetState（PlayerIndex.One）.Buttons.Back == ButtonState。按下）
 this.Exit（）; 
 
 $ b $ // TODO：在这里添加更新逻辑
 switch（gameState）
 {
 case GameStates.Battle：
 break; 
} 
 base.Update（gameTime）; 
} 
 
 ///< summary> 
 ///当游戏应该绘制时，这被调用。 
 ///< / summary> 
 ///< param name =gameTime>提供时间值的快照。< / param> 
 protected override void Draw（GameTime gameTime）
 {
 GraphicsDevice.Clear（Color.CornflowerBlue）; 
 spriteBatch.Begin（）; 
 $ b $ // TODO：在这里添加绘图代码
 if（（gameState == GameStates.Battle））
 {
 spriteBatch.DrawString（
 basic ，
ASDFASDFADFASDFA，textLocation，Color.Black）; 
 spriteBatch.Draw（
 dinoTex，textLocation，Color.White）; 
} 
 spriteBatch.End（）; 
 base.Draw（gameTime）; 
} 
} 
  

}

在我的Game1代码中，我可以成功在屏幕上绘制该精灵和文本。但是，我想在另一个课堂上绘制一个精灵，但我完全不知道应该放在那里。

在另一个类中，我希望我可以做一些简单的事情，比如：

sprite.Draw（/ /这里应该是x和y的精灵所在的坐标，纹理的名称），这就是它，但它似乎只是不这样工作。有人知道我可以怎么做吗？ 解决方案

它的确如此。将您的精灵特定代码解压缩到类似于以下内容的类中：

  public Sprite（）
 {
 
 $ b公共无效更新（GameTime gameTime）
 {
} 
 
 public void Draw（SpriteBatch spriteBatch）
 {
 
 $ / code> 

然后在你的game1类中，你可以调用



  Sprite.Update（gameTime）; 
  

和

  Sprite.Draw（spriteBatch）; 
  

这应该有助于您开始。你是否尝试了一些方法，如果是的话，发布它们，我们可以看到它们出错的地方，或者你只是希望能够快速的复制和粘贴？

I'm trying to program a game with a friend, and I'm very confused as to how to draw sprites. I can draw code in my Game1 class, below.

namespace SweetGeorgiaBrown
{
    /// <summary>
/// This is the main type for your game
/// </summary>
public class Game1 : Microsoft.Xna.Framework.Game
{
            enum GameStates { TitleScreen, Overworld, Menu, Battle, GameOver };
    GameStates gameState = GameStates.Battle;
    GraphicsDeviceManager graphics;
    SpriteBatch spriteBatch;
    Texture2D dinoTex;
    Texture2D alienTex;
    Texture2D robotTex;
    Texture2D eroboTex;
    SpriteFont basic;


    private Vector2 textLocation = new Vector2(20, 20);
    public Game1()
    {
        graphics = new GraphicsDeviceManager(this);
        Content.RootDirectory = "Content";


    }

    public class Health
    {
        public static int dinoHP = 300;
        public static int alienHP = 200;
        public static int robotHP = 100;
    }

    /// <summary>
    /// Allows the game to perform any initialization it needs to before starting to run.
    /// This is where it can query for any required services and load any non-graphic
    /// related content.  Calling base.Initialize will enumerate through any components
    /// and initialize them as well.
    /// </summary>
    protected override void Initialize()
    {
        // TODO: Add your initialization logic here

        base.Initialize();
    }

    /// <summary>
    /// LoadContent will be called once per game and is the place to load
    /// all of your content.
    /// </summary>
    protected override void LoadContent()
    {
        // Create a new SpriteBatch, which can be used to draw textures.
        spriteBatch = new SpriteBatch(GraphicsDevice);
        dinoTex = Content.Load<Texture2D>(@"Sprites\dino\dinoFrontOvwld");
        alienTex = Content.Load<Texture2D>(@"Sprites\alien\alienFrontOvwld");
        robotTex = Content.Load<Texture2D>(@"Sprites\robot\robotFrontOvwld");
        eroboTex = Content.Load<Texture2D>(@"Sprites\robo1\robo1OvwldFront");

        basic = Content.Load<SpriteFont>(@"Fonts\Basic");
        // TODO: use this.Content to load your game content here
    }

    /// <summary>
    /// UnloadContent will be called once per game and is the place to unload
    /// all content.
    /// </summary>
    protected override void UnloadContent()
    {
        // TODO: Unload any non ContentManager content here
    }

    /// <summary>
    /// Allows the game to run logic such as updating the world,
    /// checking for collisions, gathering input, and playing audio.
    /// </summary>
    /// <param name="gameTime">Provides a snapshot of timing values.</param>
    protected override void Update(GameTime gameTime)
    {
        // Allows the game to exit
        if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
            this.Exit();


        // TODO: Add your update logic here
        switch (gameState)
        {
            case GameStates.Battle:
                break;
        }
        base.Update(gameTime);
    }

    /// <summary>
    /// This is called when the game should draw itself.
    /// </summary>
    /// <param name="gameTime">Provides a snapshot of timing values.</param>
    protected override void Draw(GameTime gameTime)
    {
        GraphicsDevice.Clear(Color.CornflowerBlue);
        spriteBatch.Begin();

        // TODO: Add your drawing code here
        if ((gameState == GameStates.Battle))
        {
            spriteBatch.DrawString(
                basic,
                "ASDFASDFADFASDFA ", textLocation, Color.Black);
            spriteBatch.Draw(
                dinoTex, textLocation, Color.White);
        }
        spriteBatch.End();
        base.Draw(gameTime);
    }
}

}

In my Game1 code, I can successfully draw that sprite and the text there on the screen. However, I want to draw a sprite in another class, but I have absolutely no idea what to put there.

In the other class, I wish I could just do something as simple as

sprite.Draw(//here would be x and y coords of where the sprite goes, name of the texture), and have that be it, but it seems to just not work that way. Does anyone know how I can go about doing this?

解决方案

It does indeed work like that. Extract your sprite specific code into a class that is structured something similar to:

public Sprite()
{
}

public void Update(GameTime gameTime)
{
}

public void Draw(SpriteBatch spriteBatch)
{
}

Then in your game1 class you can call

Sprite.Update(gameTime); 

and

Sprite.Draw(spriteBatch);

That should help you get started. Did you try some approaches yourself, if so post them and we can see where they went wrong, or are you just hoping for a quick answer you can copy and paste?

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