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Learn how to make improvements to the Sprite class that was introduced in an earlier lesson.

Revised: Mon May 09 17:04:23 CDT 2016

This page is part of a Book titled XNA Game Studio .

Table of Contents

Preface

This module is one in a collection of modules designed primarily for teaching GAME 1343 Game and Simulation Programming I at Austin Community College in Austin, TX. These modules are intended tosupplement and not to replace the textbook.

An earlier module titled Getting Started provided information on how to get started programming with Microsoft's XNA Game Studio.

Viewing tip

I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the Figuresand Listings while you are reading about them.

Figures

  • Figure 1 . Screen shot of the running program.

Listings

  • Listing 1 . Beginning of the Sprite class.
  • Listing 2 . The first three property accessor methods.
  • Listing 3 . The property accessor method for Speed.
  • Listing 4 . The constructor for the Sprite class.
  • Listing 5 . The SetImage method.
  • Listing 6 . Beginning of the Move method.
  • Listing 7 . Add the direction vector to the position vector.
  • Listing 8 . Process a collision with an edge of the game window.
  • Listing 9 . Beginning of the method named NewDirection.
  • Listing 10 . Compute components of a new direction vector.
  • Listing 11 . The Sprite.Draw method.
  • Listing 12 . Beginning of the Game1 class.
  • Listing 13 . The modified constructor.
  • Listing 14 . Beginning of the overridden LoadContent method.
  • Listing 15 . Instantiate and set properties on the power pills and the UFOs.
  • Listing 16 . The private DirectionVector method.
  • Listing 17 . Tell the sprites to move.
  • Listing 18 . The overridden Game.Draw method.
  • Listing 19 . The class named Sprite for the project named XNA0128Proj.
  • Listing 20 . The class named Game1 for the project named XNA0128Proj.

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Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
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