These are user defined include files Included in double quotes - the path to find these has to be given at compile time. More...

Classes
class	callbacks_t
struct	settings_t
	Simulation settings. Some can be controlled in the GUI. More...
struct	sim_t
	the sim_t stores a string and object pointer to base_sim_t More...
struct	contact_point_t
	The contact_point_t stores contact point. More...
class	base_sim_t
	the base_sim_t class is used to simulate the Box2D world. inherited from the b2ContactListener. More...
class	dominos_t
	This is the class that sets up the Box2D simulation world Notice the public inheritance - why do we inherit the base_sim_t class? More...
Typedefs
typedef base_sim_t *	sim_create_fcn ()
	Why do we use a typedef? Creates a new datatype. sim_create_fcn() acts as a pointer datatype to base_sim_t class.
Variables
int32	test_index = 0
int32	test_selection = 0
int32	test_count = 0
cs296::sim_t *	entry
cs296::base_sim_t *	test
cs296::settings_t	settings
int32	width = 640
int32	height = 480
int32	frame_period = 16
int32	main_window
float	settings_hz = 60.0
float32	view_zoom = 1.0f
int	tx
int	ty
int	tw
int	th
bool	r_mouse_down
b2Vec2	lastp
sim_t *	sim = new sim_t("Dominos", dominos_t::create)
const int32	k_max_contact_points = 2048

Detailed Description

These are user defined include files Included in double quotes - the path to find these has to be given at compile time.

Notice the use of these pre-processor directives on top of each header file Why are they used?

The namespace protects the global variables and other names from clashes in scope. Read about the use of named and unnamed namespaces in C++ Figure out where all the datatypes used below are defined

This file defines all the callback functions our code needs. Why are they not members of a class? Can you make them into a class?

Callback functions are called when a event occurs due to the press of a key, mouse button, or a GUI element like a menu item is clicked or scroller is dragged. Some callbacks are triggered after a fixed intervals when a timer elapses. These are user defined include files Included in double quotes - the path to find these has to be given at compile time

GLUI is the library used for drawing the GUI Learn more about GLUI by reading the GLUI documentation Learn to use preprocessor diectives to make your code portable These are standard include files These are usually available at standard system paths like /usr/include Read about the use of include files in C++ Notice the use of extern. Why is it used here?