CollisionManager Class Reference

Collision Manager singleton class. More...

#include <CollisionManager.h>

List of all members.

Public Member Functions
bool	CheckCollision (PhysicsObject *discPhysics, PhysicsObject *colliderPhysics, double deltaTime)
bool	CheckCollision (PhysicsObject *discPhysics, RectangleCollider *colliderPhysics, double deltaTime)
bool	CheckCollision (float x1, float y1, float x2, float y2, float radius1, float radius2)
bool	CheckButtonCollision (float x1, float y1, float x2, float y2, int width, int height)
void	SolveCollision (PhysicsObject *discPhysics, PhysicsObject *colliderPhysics)
void	SolveCollision (PhysicsObject *discPhysics, RectangleCollider *colliderPhysics, bool hasCleared)
Static Public Member Functions
static CollisionManager *	Instance ()
static void	DestroyInstance ()
Protected Member Functions
	CollisionManager ()
	~CollisionManager ()
Protected Attributes
float	m_colliderImpulse
	Impulse the grid collider's impart upon discs.
Static Protected Attributes
static CollisionManager *	m_instance = 0
	Static CollisionManager instance which will be returned when the singleton's Instance() method is called.

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Detailed Description

Collision Manager singleton class.

Returns an instance of a collision manager, which is used to detect and solve collisions.

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Constructor & Destructor Documentation

CollisionManager::CollisionManager

(

)

[protected]

Constructor.

Creates a CollisionManager object. Protected as this is a singleton, which is created when Instance() is first called.

CollisionManager::~CollisionManager

(

)

[protected]

Destructor.

Destroys the CollisionManager object. Protected as this is a singleton, which should instead be deleted using DestroyInstance().

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Member Function Documentation

bool CollisionManager::CheckButtonCollision	(	float	x1,
		float	y1,
		float	x2,
		float	y2,
		int	width,
		int	height
	)

Check collision between point and rectangle.

Checks for a collision between a point and a rectangle.

Parameters:

[in]	x1	X position of the point.
[in]	y1	Y position of the point.
[in]	x2	X position of the rectangle (top left corner).
[in]	y2	Y position of the rectangle (top left corner).
[in]	width	Width of the rectangle.
[in]	height	Height of the rectangle.

Returns:

Bool representing whether the two objects are colliding.

bool CollisionManager::CheckCollision	(	PhysicsObject *	discPhysics,
		RectangleCollider *	colliderPhysics,
		double	deltaTime
	)

Check collision between a disc and a grid side collider.

Checks for a collision between a circular PhysicsObject and a rectangular PhysicsObject using the standard distance formula.

Parameters:

[in]	discPhysics	The disc's PhysicsObject.
[in]	colliderPhysics	The grid collider's PhysicsObject.
[in]	deltaTime	Time since the last update.

Returns:

Bool representing whether the two PhysicsObjects are colliding.

bool CollisionManager::CheckCollision	(	float	x1,
		float	y1,
		float	x2,
		float	y2,
		float	radius1,
		float	radius2
	)

Check collision between two circles.

Checks for a collision between a circles given their (x, y) positions and their radii.

Parameters:

[in]	x1	X position of the centre of the first circle.
[in]	y1	Y position of the centre of the first circle.
[in]	x2	X position of the centre of the second circle.
[in]	y2	Y position of the centre of the second circle.
[in]	radius1	Radius of the first circle.
[in]	radius2	Radius of the second circle.

Returns:

Bool representing whether the two PhysicsObjects are colliding.

bool CollisionManager::CheckCollision	(	PhysicsObject *	discPhysics,
		PhysicsObject *	colliderPhysics,
		double	deltaTime
	)

Check collision between a disc and a grid top collider.

Checks for a collision between two circular PhysicsObjects using the standard distance formula.

Parameters:

[in]	discPhysics	The disc's PhysicsObject.
[in]	colliderPhysics	The grid collider's PhysicsObject.
[in]	deltaTime	Time since the last update.

Returns:

Bool representing whether the two PhysicsObjects are colliding.

void CollisionManager::DestroyInstance

(

)

[static]

Delete this singleton.

Safely deletes the singleton instance and releases any memory it was using.

CollisionManager * CollisionManager::Instance

(

)

[static]

Return the static CollisionManager instance.

Returns a static instance of CollisionManager. If no CollisionManager instance exists, one is created.

Returns:

Static CollisionManager instance.

void CollisionManager::SolveCollision	(	PhysicsObject *	discPhysics,
		RectangleCollider *	colliderPhysics,
		bool	hasCleared
	)

Solve a collision between a disc and a grid side collider.

Solves the collision by giving the disc a new velocity, and translating it using a minimum translation vector so there is no further contact.

Parameters:

[in]	discPhysics	The disc's PhysicsObject.
[in]	colliderPhysics	The grid collider's PhysicsObject.
[in]	hasCleared	Has the disc cleared the top-left corner of the grid?

void CollisionManager::SolveCollision	(	PhysicsObject *	discPhysics,
		PhysicsObject *	colliderPhysics
	)

Solve a collision between a disc and a grid top collider.

Solves the collision by giving the disc a new velocity, and translating it using a minimum translation vector so there is no further contact. Modifies the amount of bounce the disc has based on the number of previous collisions.

Parameters:

[in]	discPhysics	The disc's PhysicsObject.
[in]	colliderPhysics	The grid collider's PhysicsObject.

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The documentation for this class was generated from the following files:

• C:/Marmalade/7.4/examples/GameTutorial/CPP/Stage2/source/CollisionManager.h
• C:/Marmalade/7.4/examples/GameTutorial/CPP/Stage2/source/CollisionManager.cpp