Book Image

XNA 4 3D Game Development by Example: Beginner's Guide

By : Kurt Jaegers
Book Image

XNA 4 3D Game Development by Example: Beginner's Guide

By: Kurt Jaegers

Overview of this book

Move beyond the world of flat 2D-based game development and discover how to create your own exciting 3D games with Microsoft XNA 4.0. Create a 3D maze, fire shells at enemy tanks, and drive a rover on the surface of Mars while being attacked by alien saucers."XNA 4 3D Game Development by Example: Beginner's Guide" takes you step-by-step through the creation of three different 3D video games with Microsoft XNA 4.0. Learn by doing as you explore the worlds of 3D graphics and game design.This book takes a step-by-step approach to building 3D games with Microsoft XNA, describing each section of code in depth and explaining the topics and concepts covered in detail. From the basics of a 3D camera system to an introduction to writing DirectX shader code, the games in this book cover a wide variety of both 3D graphics and game design topics. Generate random mazes, load and animate 3D models, create particle-based explosions, and combine 2D and 3D techniques to build a user interface."XNA 4 3D Game Development by Example: Beginner's Guide" will give you the knowledge to bring your own 3D game creations to life.
Table of Contents (16 chapters)
XNA 4 3D Game Development by Example Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface

Time for action – player shots versus aliens


To implement how the player shots hit an alien craft, perform the following steps:

  1. 1. Add the CrashSaucer() method to the EnemySaucer class as follows:

    #region HelperMethods
    public void CrashSaucer()
    {
        curvePoints[1] = Position;
        curvePoints[2].Y = -80;
        curvePoints[2].Z = 0;
        curveProgress = 0.0f;
        curveDelta = 0.5f;
        pitch = MathHelper.ToRadians(20);
        roll = MathHelper.ToRadians(-20);
        IsDestroyed = true;
    }
    #endregion
  2. 2. Add the Collision Detection region to the ShotManager class as follows:

    #region Collision Detection
    public bool CheckPlayerShotHits(BoundingBox target)
    {
        foreach (PlayerShot shot in playerShots)
        {
            if (shot.IsActive)
            {
                if (target.Intersects(shot.Bounds))
                {
                    return true;
                }
            }
        }
    
        return false;
    }
    #endregion
  3. 3. In the Update() method of the MarsRunnerPlayScreen class, add the following code just after shotManager has been...