Skip to Main Content
Android NDK Beginner`s Guide - Second Edition
book

Android NDK Beginner`s Guide - Second Edition

by Sylvain Ratabouil
April 2015
Beginner to intermediate content levelBeginner to intermediate
494 pages
10h 26m
English
Packt Publishing
Content preview from Android NDK Beginner`s Guide - Second Edition

Time for action – running Box2D physics engine

Let's rewrite the DroidBlaster physics engine with Box2D with the following steps:

  1. Open the jni/PhysicsManager.hpp header and insert the Box2D include file.

    Define a constant PHYSICS_SCALE to convert the body position from physics to game coordinates. Indeed, Box2D uses its own scale for a better precision.

    Then, replace PhysicsBody with a new structure, PhysicsCollision, that will indicate which bodies entered in collision, as shown in the following:

    #ifndef PACKT_PHYSICSMANAGER_HPP
    #define PACKT_PHYSICSMANAGER_HPP
    
    #include "GraphicsManager.hpp"
    #include "TimeManager.hpp"
    #include "Types.hpp"
    
    #include <Box2D/Box2D.h>
    #include <vector>
    
    #define PHYSICS_SCALE 32.0f
    
    struct PhysicsCollision {
        bool collide; ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Pro Android C++ with the NDK

Pro Android C++ with the NDK

Onur Cinar
Learning Embedded Android N Programming

Learning Embedded Android N Programming

Ivan Morgillo, Stefano Viola

Publisher Resources

ISBN: 9781783989645Supplemental Content