Book Image

Panda3D 1.6 Game Engine Beginner's Guide

Book Image

Panda3D 1.6 Game Engine Beginner's Guide

Overview of this book

Panda3D is a game engine, a framework for 3D rendering and game development for Python and C++ programs. It includes graphics, audio, I/O, collision detection, and other abilities relevant to the creation of 3D games. Also, Panda3D is Open Source and free for any purpose, including commercial ventures. This book will enable you to create finished, marketable computer games using Panda3D and other entirely open-source tools and then sell those games without paying a cent for licensing. Panda3D 1.6 Game Engine Beginner's Guide follows a logical progression from a zero start through the game development process all the way to a finished, packaged installer. Packed with examples and detailed tutorials in every section, it teaches the reader through first-hand experience. These tutorials are followed by explanations that describe what happened in the tutorial and why. You will start by setting up a workspace, and then move on to the basics of starting up Panda3D. From there, you will begin adding objects like a level and a character to the world inside Panda3D. Then the book will teach you to put the game's player in control by adding change over time and response to user input. Then you will learn how to make it possible for objects in the world to interact with each other by using collision detection and beautify your game with Panda3D's built-in filters, shaders, and texturing. Finally, you will add an interface, audio, and package it all up for the customer.
Table of Contents (22 chapters)
Panda3D 1.6 Game Engine
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – creating a preloader to load models


Let's get a feel for how this works by creating a preloader to load our models before the game starts.

  1. Create a blank new file in Notepad++. Save it as PreloaderClass_01.py. Then, add these two import lines to the top of the file:

    from direct.gui.DirectGui import *
    from pandac.PandaModules import *
  2. It would be easy to just have the preloader load the models and be done with it, but that wouldn't be any different than having a black screen when the game loads. We'd accomplish nothing. We need our preloader to show the loading progress, and that means we need to create some GUI elements. Add in the class definition and __init__ method, and have them look like this:

    class Preloader:
      def __init__(self, fonts):
        self.createGraphics(fonts)
  3. Next, we'll add in that createGraphics method we just made a call to. We're going to do this in one big shot because the method is going to look very similar to the methods we used to create the HUD components...