如何克隆一个对象,然后选择一个随机位置,然后绘制它。
这是我为对象编写的代码:
public class Trash : ICloneable
{
private Texture2D _texture;
private float _rotation;
public Vector2 Position;
public Vector2 Origin;
public float RotationVelocity = 3f;
public float LinearVelocity = 4f;
public Trash(Texture2D texture)
{
_texture = texture;
}
public void Update()
{
// Do epic stuff here
}
public void Draw(SpriteBatch spriteBatch)
{
spriteBatch.Draw(_texture, Position, null, Color.White, _rotation, Origin, 1, SpriteEffects.None, 0f);
}
public object Clone()
{
return this.MemberwiseClone();
}这是我到目前为止在Game1.cs中的代码:
public class Game1 : Game
{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;
private SeaJam.Objects.Trash Trash;
public Game1()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
}
/// <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();
}
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
var texture = Content.Load<Texture2D>("Prototype");
Trash = new Objects.Trash(texture)
{
Position = new Vector2(100, 100),
Origin = new Vector2(texture.Width / 2, texture.Height - 25),
};
}
protected override void Update(GameTime gameTime)
{
Trash.Update();
base.Update(gameTime);
}
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.CornflowerBlue);
spriteBatch.Begin();
Trash.Draw(spriteBatch);
spriteBatch.End();
base.Draw(gameTime);
}
private void AddTrash()
{
var rnd = new System.Random();
var NewTrash = Trash.Clone();
}问题是,每当我试图在AddTrash()方法中为克隆提供一个随机位置时,我只会得到错误,例如"'object‘不包含' position’的定义,并且无法找到接受'object‘类型的第一个参数的可访问扩展方法'Position’(您是否缺少using指令或程序集引用?)“
发布于 2021-11-04 07:47:22
你的构造函数:
public Trash(Texture2D texture)
{
_texture = texture;
}需要使用所需的可变参数进行扩展。在本例中,它需要添加Position和Origin作为参数,然后将其作为值应用。
如下所示:
public Trash(Texture2D texture, Vector2 position, Vector2 origin)
{
_texture = texture;
Position = position;
Origin = origin;
}并改变在game1.cs中调用它的方式,它们需要类似于texture的工作方式
var texture = Content.Load<Texture2D>("Prototype");
var position = new Vector2(100, 100),
var origin = new Vector2(texture.Width / 2, texture.Height - 25),
Trash = new Objects.Trash(texture, position, origin);作为提示:保持字段名称的一致性,在一个字段中混合使用下划线和小写,而在另一个字段中混合使用大写将使人难以理解。尤其是当参数也需要与字段不同的名称时。我更喜欢将它们全部保留为第一个字母大写。
https://stackoverflow.com/questions/69833890
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