CNewtonsCradle Class Reference

Newton's cradle. More...

#include <NewtonsCradle.h>

Inheritance diagram for CNewtonsCradle:

Public Member Functions
	CNewtonsCradle (float, UINT)
	Constructor. More...
	~CNewtonsCradle ()
	Denstructor. More...
void	DeliverImpulse (UINT)
	Deliver impulse. More...
void	move ()
	Swivel Isaac Newton's eyeballs. More...
void	DrawIsaac ()
	Draw Isaac Newton.

Private Member Functions
b2Body *	CreateBall (float, float)
	Create a ball. More...
b2Body *	CreateCradle (float, float)
	Create the cradle. More...

Private Attributes
std::vector< b2Body * >	m_stdBallList
	Pointers to Physics World bodies of the balls.
CSirIsaacNewton *	m_pIsaac = nullptr
	Isaac Newton caricature.

Additional Inherited Members
Static Protected Attributes inherited from CCommon
static b2World *	m_pPhysicsWorld = nullptr
	Pointer to Box2D Physics World.
static CRenderer *	m_pRenderer = nullptr
	Pointer to the renderer.
static CObjectManager *	m_pObjectManager = nullptr
	Pointer to the object manager.
static CWindmill *	m_pWindmill = nullptr
	Pointer to windmill.
static CGear *	m_pGear = nullptr
	Pointer to gear system.
static CNautilusGear *	m_pNautilusGear = nullptr
	Pointer to Nautilus gear system.
static CRackAndPinion *	m_pRackAndPinion = nullptr
	Pointer to rack-and-pinion.
static CCar *	m_pCar = nullptr
	Pointer to car.
static CRamp *	m_pRamp = nullptr
	Pointer to ramp.
static CNewtonsCradle *	m_pNewtonsCradle = nullptr
	Pointer to Newton's Cradle.
static CPulley *	m_pPulley = nullptr
	Pointer to pulley system.
static eLevel	m_eCurLevel = eLevel::Windmill
	Current level.

Detailed Description

Newton's cradle.

Newton's Cradle has a bunch of balls on strings hanging from a cradle. It's a common executive toy. For those in the know, it demonstrates the conservation of momentum and energy in collisions.

Constructor & Destructor Documentation

CNewtonsCradle()

CNewtonsCradle::CNewtonsCradle	(	float	x,
		UINT	n
	)

Constructor.

Create the cradle, the balls, the distance joints connecting the former to the latter, and the line objects that represent them. The balls are created in left-to-right order.

Parameters

x	X coordinate of the center of the cradle in Physics World.
n	Number of balls required.

~CNewtonsCradle()

CNewtonsCradle::~CNewtonsCradle

(

)

Denstructor.

Destructor.

Member Function Documentation

CreateBall()

b2Body * CNewtonsCradle::CreateBall ( float  x, float  y  )

private

Create a ball.

Create a ball bearing object and Physics World body.

Parameters

x	X coordinate in Physics World units.
y	Y coordinate in Physics World units.

CreateCradle()

b2Body * CNewtonsCradle::CreateCradle ( float  x, float  y  )

private

Create the cradle.

The cradle except for the bar at the top of the cradle.

Parameters

x	X coordinate in Physics World units.
y	Y coordinate in Physics World units.

DeliverImpulse()

void CNewtonsCradle::DeliverImpulse

(

UINT

n

)

Deliver impulse.

Deliver an impulse to the n leftmost balls. This function assumes that the balls were created in left-to-right order.

Parameters

n	Number of balls that get the impulse.

move()

void CNewtonsCradle::move

(

)

Swivel Isaac Newton's eyeballs.

Move Isaac Newton's eyeballs seivel in the direction of the last ball in the ball list, which is hopefully the rightmost one.