Databases
StackOverflow2013
Postsdbo
POXNA soundEffect is null in when loaded in main class and called in another class
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POXNA soundEffect is null in when loaded in main class and called in another class
    primarykey
    data
    text
    <p>I have loaded a sound effect file into the main class in xna, but when I try to run it in another class I am given this error</p> <blockquote> <p>{"Object reference not set to an instance of an object."}</p> </blockquote> <p>I am new to XNA classes so I do not really understand them. Any help as soon as possible is greatly appreciated.</p> <p>this is part of the main class </p> <pre><code>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 BreakingOut { /// &lt;summary&gt; /// This is the main type for your game /// &lt;/summary&gt; public class Game1 : Microsoft.Xna.Framework.Game { GraphicsDeviceManager graphics; SpriteBatch spriteBatch; Ball ball; Paddle paddle; Rectangle screenRectangle; bool is1P = true; int lives = 3; Texture2D startButtonTexture; Vector2 buttonVec; Texture2D exitButtonTexture; Vector2 button2Vec; int bricksWide = 10; int bricksHigh = 7; Texture2D brickImage; Brick[,] bricks; //rec for menu Texture2D menuTexture; Rectangle menuRec = new Rectangle(0, 0, 960, 640); //rec for pause Texture2D pauseTexture; Rectangle pauseRec = new Rectangle(0, 0, 960, 640); //lose Texture2D loseTexture; Rectangle loseRec = new Rectangle(0, 0, 960, 640); Texture2D winTexture; Rectangle winRec = new Rectangle(0, 0, 960, 640); //sound effects public SoundEffect BallHitSE; SoundEffect WallHitSE; SoundEffect StartSE; //BGM Song menuMusic; Song gameMusic; bool isGameMusicPlaying = false; bool isMenuMusicPlaying = false; float pauseTimer; float exitTimer; float muteTimer; float SEmuteTimer; //public int brickCount = 70; SpriteFont font; Vector2 mousePos; enum gameStates { MENU, GAME1P, LOSE, PAUSE, WIN, } gameStates currentState = gameStates.MENU; gameStates prevState = gameStates.MENU; public Game1() { graphics = new GraphicsDeviceManager(this); Content.RootDirectory = "Content"; IsMouseVisible = true; graphics.PreferredBackBufferWidth = 960; graphics.PreferredBackBufferHeight = 640; screenRectangle = new Rectangle( 0, 0, graphics.PreferredBackBufferWidth, graphics.PreferredBackBufferHeight); } /// &lt;summary&gt; /// 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. /// &lt;/summary&gt; protected override void Initialize() { // TODO: Add your initialization logic here base.Initialize(); } /// &lt;summary&gt; /// LoadContent will be called once per game and is the place to load /// all of your content. /// &lt;/summary&gt; protected override void LoadContent() { // Create a new SpriteBatch, which can be used to draw textures. spriteBatch = new SpriteBatch(GraphicsDevice); Texture2D tempTexture = Content.Load&lt;Texture2D&gt;("paddle"); paddle = new Paddle(tempTexture, screenRectangle); BallHitSE = Content.Load&lt;SoundEffect&gt;("BallHit"); WallHitSE = Content.Load&lt;SoundEffect&gt;("WallHit2"); StartSE = Content.Load&lt;SoundEffect&gt;("Start"); gameMusic = Content.Load&lt;Song&gt;("gameMusic"); menuMusic = Content.Load&lt;Song&gt;("menuMusic"); </code></pre> <p>This is the Ball class</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.Xna.Framework.Audio; using Microsoft.Xna.Framework; using Microsoft.Xna.Framework.Graphics; namespace BreakingOut { class Ball { Vector2 motion; Vector2 position; Rectangle bounds; bool collided; public int brickCount = 70; const float ballStartSpeed = 6.4f; public float ballSpeed; Texture2D texture; Rectangle screenBounds; SoundEffect BallHitSE; //BallHitSE = new SoundEffect public Rectangle Bounds { get { bounds.X = (int)position.X; bounds.Y = (int)position.Y; return bounds; } } public Ball(Texture2D texture, Rectangle screenBounds) { bounds = new Rectangle(0, 0, texture.Width, texture.Height); this.texture = texture; this.screenBounds = screenBounds; //Different things we tried //BallHitSE = Content.Load&lt;SoundEffect&gt;("BallHit"); //BallHitSE = new soundeffect(what goes in here?); //BallHitSE = Content.Manager.Load("path") } public void Update() { collided = false; position += motion * ballSpeed; ballSpeed += 0.001f; CheckWallCollision(); } public void CheckWallCollision() { if (position.X &lt; 0) { position.X = 0; motion.X *= -1; //if (BallHitSE != null) //{ BallHitSE.Play(); //} } if (position.X + texture.Width &gt; screenBounds.Width) { position.X = screenBounds.Width - texture.Width; motion.X *= -1; //if (BallHitSE != null) //{ BallHitSE.Play(); //} } if (position.Y &lt; 0) { position.Y = 0; motion.Y *= -1; //if (BallHitSE != null) //{ BallHitSE.Play(); //} } } public void SetInStartPosition(Rectangle paddleLocation) { Random rand = new Random(); motion = new Vector2(rand.Next(2, 6), -rand.Next(2, 6)); motion.Normalize(); ballSpeed = ballStartSpeed; position.Y = paddleLocation.Y - texture.Height; position.X = paddleLocation.X + (paddleLocation.Width - texture.Width) / 2; } public bool OffBottom() { if (position.Y &gt; screenBounds.Height) return true; return false; } public void PaddleCollision(Rectangle paddleLocation) { Rectangle ballLocation = new Rectangle( (int)position.X, (int)position.Y, texture.Width, texture.Height); if (paddleLocation.Intersects(ballLocation)) { position.Y = paddleLocation.Y - texture.Height; motion.Y *= -1; } } public void Deflection(Brick brick) { if (!collided) { motion.Y *= -1; collided = true; brickCount -= 1; } } public void Draw(SpriteBatch spriteBatch) { spriteBatch.Draw(texture, position, Color.White); for (int i = 1; i &lt; 10; i++) { var drawPosition = position - (i * motion * 3); var colour = Color.Lerp(Color.White, Color.Transparent, i * (20 / 100f)); spriteBatch.Draw(texture, drawPosition, colour); } } } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USEvan
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POXNA soundEffect is null in when loaded in main class and called in another class
      1. This table or related slice is empty.
      1. VTUpMod
    1. COColton has the answer for you, but I think you should at first try to get a general idea of how classes work in C#.
      singulars
      1. POXNA soundEffect is null in when loaded in main class and called in another class
      1. USKai Hartmann
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload