Book Image

jMonkeyEngine 3.0 : Beginner's Guide

Book Image

jMonkeyEngine 3.0 : Beginner's Guide

Overview of this book

jMonkeyEngine 3.0 is a powerful set of free Java libraries that allows you to unlock your imagination, create 3D games and stunning graphics. Using jMonkeyEngine's library of time-tested methods, this book will allow you to unlock its potential and make the creation of beautiful interactive 3D environments a breeze."jMonkeyEngine 3.0 Beginner's Guide" teaches aspiring game developers how to build modern 3D games with Java. This primer on 3D programming is packed with best practices, tips and tricks and loads of example code. Progressing from elementary concepts to advanced effects, budding game developers will have their first game up and running by the end of this book.From basic concepts and project creation to building a complex 3D Game, you will learn to layout 3D scenes, make them interactive and add various multi-media effects.You will find answers to common questions including best practices and approaches, how game characters can act and interact, how to simulate solid walls and physical forces, how to take it online to play over a network and much more.From Zero to Hero, start your journey to make your game idea a reality.
Table of Contents (20 chapters)
jMonkeyEngine 3.0 Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – saving and loading .j3o files


Right-clicking a model in the SDK is not the only way to create j3o files. Another common situation is that you want to save the current scene when the player quits, and restore the game when the player restarts the application.

You can use com.jme3.export.binary.BinaryExporter to create j3o files, and the com.jme3.asset.plugins.FileLocator to register custom directories as AssetManager root directories. Switch over to your BasicGame project in the jMonkeyEngine SDK again.

  1. Make a copy of LoadModel.java and name the class SaveModel.java. Remember to also refactor the first line of the main() method to:

    SaveModel app = new SaveModel();
  2. Keep the light source. Replace the model loading code in the simpleInitApp() method with the following code snippet. It loads your j3o file from the assets/Models directory and moves the model to a random position:

    Spatial mymodel = assetManager.loadModel(
        "Models/MyModel/mymodel.j3o");
    mymodel.move(
        FastMath...