CObjectManager Class Reference

The object manager. More...

#include <ObjectManager.h>

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Public Member Functions
	~CObjectManager ()
	Destructor.
void	Clear ()
	Reset to initial conditions.
void	Move ()
	Move all objects.
void	Draw ()
	Draw all objects.
void	DeliverImpulse (float)
	Apply impulse to the current bodies.
void	CreateBody ()
	Create a pair of bodies.
CPoint *	create (eSprite, const Vector2 &, float)
	Create a point.
CSpring *	create (eSprite, CPoint *, CPoint *, float)
	Create a spring.
void	Relax (UINT)
	Gauss-Seidel relaxation.

Private Attributes
std::vector< CPoint * >	m_stdPt
	Point list.
std::vector< CSpring * >	m_stdSpr
	Spring list.
CBody *	m_pCurBody0 = nullptr
	The first body.
CBody *	m_pCurBody1 = nullptr
	The second body.

Additional Inherited Members
Static Protected Attributes inherited from CCommon
static Sage::CSpriteRenderer *	m_pRenderer = nullptr
	Pointer to the renderer.
static CObjectManager *	m_pObjectManager = nullptr
	Pointer to the object manager.
static eBody	m_eCurrentBody = (eBody)0
	Current body type.

Detailed Description

A collection of all of the game objects. Note that while bodies maintain a local list of pointers to their points and springs so that draw order can be maintained, the object manager keeps lists of pointers to all of the points and springs from all of the bodies so it can easily move the points and perform Gauss-Seidel relaxation on the springs. Those operations do not depend upon whether those points and springs are in bodies.

Constructor & Destructor Documentation

~CObjectManager()

CObjectManager::~CObjectManager

(

)

Call CObjectManager::clear to delete everything.

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Member Function Documentation

Clear()

void CObjectManager::Clear

(

)

Clear all points from the point list and springs from the spring list, then delete the current bodies.

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create() [1/2]

CPoint * CObjectManager::create	(	eSprite	t,
		const Vector2 &	v,
		float	r )

Create a point and append it to the point list.

Parameters

t	Sprite type.
v	Position.
r	Restitution.

Returns

Pointer to the created point.

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create() [2/2]

CSpring * CObjectManager::create	(	eSprite	t,
		CPoint *	v0,
		CPoint *	v1,
		float	r )

Create a spring and append it to the spring list.

Parameters

t	Sprite type.
v0	Point at one end of spring.
v1	Point at other end of spring.
r	Restitution.

Returns

Pointer to the created spring.

CreateBody()

void CObjectManager::CreateBody

(

)

Create a pair of bodies, one springy and one sticky, except for the case of the ragdoll in which we only create one body. Gets the body type from m_eCurrentBody.

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DeliverImpulse()

void CObjectManager::DeliverImpulse

(

float

m

)

Deliver an impulse to the two current bodies.

Parameters

m	Impulse magnitude.

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Draw()

void CObjectManager::Draw

(

)

Draw the current bodies using Painter's Algorithm. The background is drawn first, then bodies are asked to draw themselves in the order in which they were created. That is, they are drawn from back to front. We could draw the balls and springs from the point and spring lists, but that would very probably mess up the draw order. We have to make sure that each body's points and springs are drawn more or less together.

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Move()

void CObjectManager::Move

(

)

Move the points in the point list and perform Gauss-Seidel relaxation on the springs in the spring list.

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Relax()

void CObjectManager::Relax

(

UINT

n

)

Perform some iterations of Gauss-Seidel relaxation on the springs in the spring list.

Parameters

n	Number of iterations to perform.

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