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 ground collision system


This is going to be another long example, so let's pay close attention to each step and make sure we get everything right.

  1. To begin with, we're going to make some modifications to our Track class to prepare it. Open the TrackClassHero.py file in the Chapter06 folder and resave it as TrackClass_01.py.

  2. The first change to make is to remove the line that resets the track's position to 5 units lower.

  3. Once that is gone, add in these lines at the end of the class:

        self.gravity = 1
        self.groundCol = loader.loadModel("../Models/Ground.egg")
        self.groundCol.reparentTo(render)
        mask = BitMask32.range(1,3)
        mask.clearRange(2,1)
        self.groundCol.setCollideMask(mask)
  4. We also need an import to use BitMask. Add this line to the very top of the file:

    from pandac.PandaModules import *
  5. Resave the file again.

  6. The rest of the changes we need to make will be in the Cycle class, so open CycleClass_04.py up again.

  7. Our first addition will be to the end...