Question

我是XNA的新手，在网上发现了一个使用它制作类似游戏的教程。我正在阅读教程但是我收到错误，即使它是完全相同的代码。这是我的Game1.cs *代码：

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;

namespace WindowsGame1
{
    /// <summary>
    /// This is the main type for your game
    /// </summary>
    public class Game1 : Microsoft.Xna.Framework.Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        Paddle paddle;
        Rectangle screenBounds;

        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
            screenBounds = new Rectangle(
            0,
            0,
            graphics.PreferredBackBufferWidth,
            graphics.PreferredBackBufferHeight);
        }

        /// <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()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);
            Texture2D tempTexture = Content.Load<Texture2D>("paddle");
            paddle = new Paddle(tempTexture, screenBounds);
        }

        /// <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();
            paddle.Update();
            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();
            paddle.Draw(spriteBatch);
            spriteBatch.End();
            base.Draw(gameTime);
        }

    }
}

我也有这个课程

using System.Text;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
namespace BreakingOut
{
 class Paddle
 {
 Vector2 position;
 Vector2 motion;
 float paddleSpeed = 8f;
 KeyboardState keyboardState;
 GamePadState gamePadState;
 Texture2D texture;
     Rectangle screenBounds;
 public Paddle(Texture2D texture, Rectangle screenBounds)
 {
 this.texture = texture;
 this.screenBounds = screenBounds;
 SetInStartPosition();
 }
 public void Update()
 {
 motion = Vector2.Zero;
 keyboardState = Keyboard.GetState();
 gamePadState = GamePad.GetState(PlayerIndex.One);
 if (keyboardState.IsKeyDown(Keys.Left))
 motion.X = -1;
 if (keyboardState.IsKeyDown(Keys.Right))
 motion.X = 1;
 if (gamePadState.ThumbSticks.Left.X < -.5f)
 motion.X = -1;
 if (gamePadState.ThumbSticks.Left.X > .5f)
 motion.X = 1;
 motion.X *= paddleSpeed;
 position += motion;
 LockPaddle();
 }
 private void LockPaddle()
 {
 if (position.X < 0)
 position.X = 0;
 if (position.X + texture.Width > screenBounds.Width)
 position.X = screenBounds.Width - texture.Width;
 }
 public void SetInStartPosition()
 {
 position.X = (screenBounds.Width - texture.Width) / 2;
 position.Y = screenBounds.Height - texture.Height - 5;
 }
 public void Draw(SpriteBatch spriteBatch)
 {
 spriteBatch.Draw(texture, position, Color.White);
 }
 public Rectangle GetBounds()
 {
 return new Rectangle(
 (int)position.X, 
 (int)position.Y, 
 texture.Width,
 texture.Height);
 }
 }
}

到目前为止这个代码只是用于创建用户可以移动的桨。我还有一个正确加载的桨的图像。这是它产生的错误：

The type or namespace name 'Paddle' could not be found (are you missing a using directive or an assembly reference?)

这是产生此错误的部分：

Paddle paddle;

我已经完成了教程所说的内容，并且它适用于任何制作教程的人。非常感谢任何帮助，如果您需要更多信息，请问。谢谢。

Answer 1

Paddle课程位于＆＃34; BreakingOut＆＃34;命名空间，在您的Game1类中未引用。

所以你可以使用BreakingOut＆＃34;添加＆＃34;在Game1类之前，或者更改Paddle的命名空间。

选项1看起来像这样：

using Microsoft.Xna.Framework.Media;

using BreakingOut;     // Add the namespace of the object!!!!!

namespace WindowsGame1

选项2将是：

using Microsoft.Xna.Framework.Input;
namespace WindowsGame1    // Change the namespace of your object!!!!!
{
 class Paddle
 {

Answer 2

您需要对Paddle类命名空间的引用，但如果Paddle类在同一项目中，则只需将命名空间重命名为WindowsGame1。

Answer 3

正如Jason struckholf所说，改变桨类的命名空间使用此代码

using System.Text;
   using Microsoft.Xna.Framework;
   using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
namespace  WindowsGame1
{
 class Paddle
 {
 Vector2 position;
 Vector2 motion;
 float paddleSpeed = 8f;
 KeyboardState keyboardState;
 GamePadState gamePadState;
 Texture2D texture;
     Rectangle screenBounds;
 public Paddle(Texture2D texture, Rectangle screenBounds)
 {
 this.texture = texture;
 this.screenBounds = screenBounds;
 SetInStartPosition();
 }
 public void Update()
 {
 motion = Vector2.Zero;
 keyboardState = Keyboard.GetState();
 gamePadState = GamePad.GetState(PlayerIndex.One);
 if (keyboardState.IsKeyDown(Keys.Left))
 motion.X = -1;
 if (keyboardState.IsKeyDown(Keys.Right))
 motion.X = 1;
 if (gamePadState.ThumbSticks.Left.X < -.5f)
 motion.X = -1;
 if (gamePadState.ThumbSticks.Left.X > .5f)
 motion.X = 1;
 motion.X *= paddleSpeed;
 position += motion;
 LockPaddle();
 }
 private void LockPaddle()
 {
 if (position.X < 0)
 position.X = 0;
 if (position.X + texture.Width > screenBounds.Width)
 position.X = screenBounds.Width - texture.Width;
 }
 public void SetInStartPosition()
 {
 position.X = (screenBounds.Width - texture.Width) / 2;
 position.Y = screenBounds.Height - texture.Height - 5;
 }
 public void Draw(SpriteBatch spriteBatch)
 {
 spriteBatch.Draw(texture, position, Color.White);
 }
 public Rectangle GetBounds()
 {
 return new Rectangle(
 (int)position.X, 
 (int)position.Y, 
 texture.Width,
 texture.Height);
 }
 }
}

我在一些基本的XNA 4.0代码中有错误

3 个答案: