CMyListener Class Reference

My contact listener.

#include <ContactListener.h>

Inheritance diagram for CMyListener:

Collaboration diagram for CMyListener:

Public Member Functions
void	PreSolve (b2Contact *, const b2Manifold *)
	Presolve function.

Private Member Functions
UINT	Count (eSprite)
	Count number of bodies that have sprite type t.
float	GetSpeed (const b2Vec2 &)
	Get the collision speed.

Private Attributes
b2Body *	m_pBodyA = nullptr
	Pointer to body A.
b2Body *	m_pBodyB = nullptr
	Pointer to body B.

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!

Member Function Documentation

Count()

UINT CMyListener::Count ( eSprite t )

private

Count the number of bodies out of *m_pBodyA and *m_pBodyB that have objects have a given sprite type. Returns 0, 1, or 2, of course.

Parameters

t	Sprite Type.

Returns

Number of *m_pBodyA and *m_pBodyB that have type t.

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GetSpeed()

float CMyListener::GetSpeed ( const b2Vec2 & p )

private

Collision speed is proportional to the magnitude of the relative velocity.

Parameters

p	World point.

Returns

Collision speed in Physics World units.

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PreSolve()

void CMyListener::PreSolve	(	b2Contact *	pContact,
		const b2Manifold *	pManifold )

New Presolve function that renders a colored star at each contact point and plays the appropriate sound, depending on what type of objects are contacting. Box2D will run this before performing relaxation.

Parameters

pContact	Pointer to the contact.
pManifold	Pointer to the old contact manifold as it was before this contact.

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