CObject Class Reference

The game object. More...

#include <Object.h>

Inheritance diagram for CObject:

Collaboration diagram for CObject:

Public Member Functions
	CObject (eSprite, b2Body *)
	Constructor.
	~CObject ()
	Destructor.
void	draw ()
	Draw object in Render World.
void	MakeCollisionSound ()
	Make collision sound, if appropriate.
const bool	CrateBelow (float) const
	Crate is below a given height.
const eSprite	GetSpriteType () const
	Get sprite type.

Private Attributes
b2Body *	m_pBody = nullptr
	Physics World body.
b2Vec2	m_b2vOldV
	Old velocity vector, needed to infer collisions.

Additional Inherited Members
Static Protected Attributes inherited from CCommon
static b2World *	m_pPhysicsWorld = nullptr
	Pointer to Box2D Physics World.
static CBox2DRenderer *	m_pRenderer = nullptr
	Pointer to Render World.
static CObjectManager *	m_pObjectManager = nullptr
	Pointer to object manager.
static Sage::CParticleEngine2D *	m_pParticleEngine = nullptr
	Pointer to particle engine.
static eDrawMode	m_eDrawMode = eDrawMode::Sprites
	Draw mode.
static bool	m_bEasterEgg = false
	Easter egg!

Detailed Description

Game objects are responsible for remembering information about themselves, in particular, their representations in Render World and Physics World.

Constructor & Destructor Documentation

CObject()

CObject::CObject	(	eSprite	t,
		b2Body *	b )

This constructor assumes that a Physics World body has already been created for this object. It then has responsibility for deleting it in its destructor.

Parameters

t	Sprite type.
b	Pointer to Physics World body.

~CObject()

CObject::~CObject

(

)

This destructor assumes that Box2D hasn't been shut down yet.

Member Function Documentation

CrateBelow()

const bool CObject::CrateBelow

(

float

h

)

const

If this is a crate, is it below a given height? We only care about crates, so we return true for everything else.

Parameters

h	Height in Render World units.

Returns

true if this is not a crate, or has no body, or is below height h.

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draw()

void CObject::draw

(

)

Draw in Render World. Position and orientation must be gotten from Physics World.

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GetSpriteType()

const eSprite CObject::GetSpriteType

(

)

const

Reader function for sprite type.

Returns

Sprite type.

MakeCollisionSound()

void CObject::MakeCollisionSound

(

)

Kluge collision sounds by querying Physics World to see whether the object's velocity has changed. If the length squared of the change in velocity vector is larger than some arbitrarily chosen value, then conclude that a collision must have occurred, so make a sound.

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