df::Grid Class Reference

Public Member Functions
	Grid ()
	~Grid ()
void	setDimensions (int new_width, int new_height)
int	getHeight () const
int	getWidth () const
int	insertObject (Object *p_o)
int	removeObject (Object *p_o)
Cell	positionToCell (Vector where) const
std::set< Cell >	positionToCells (Object *p_o, Vector where) const
ObjectList	getCollisions (Object *p_o, Vector where) const
int	updatePosition (Object *p_o, Vector where)
ObjectList	getObjects (Cell cell) const
std::string	toString () const
int	startUp ()
void	shutDown ()
void	printLog () const

Private Attributes
ObjectList **	m_p_grid
ObjectList	m_out_of_bounds
int	m_num_cols
int	m_num_rows
int	m_width
int	m_height

Constructor & Destructor Documentation

Grid()

df::Grid::Grid

(

)

Constructor.

~Grid()

df::Grid::~Grid

(

)

Destructor.

Member Function Documentation

getCollisions()

ObjectList df::Grid::getCollisions	(	Object *	p_o,
		Vector	where
	)		const

Return all Objects that collide at given location.

List is empty if none.

getHeight()

int df::Grid::getHeight

(

)

const

Get height.

getObjects()

ObjectList df::Grid::getObjects

(

Cell

cell

)

const

Get Objects in a given Cell.

getWidth()

int df::Grid::getWidth

(

)

const

Get width.

insertObject()

int df::Grid::insertObject

(

Object *

p_o

)

Insert Object into grid.

Return 0 if ok, else -1.

positionToCell()

Cell df::Grid::positionToCell

(

Vector

where

)

const

Return Cell (x,y) for given location.

positionToCells()

std::set< Cell > df::Grid::positionToCells	(	Object *	p_o,
		Vector	where
	)		const

Return list of Cells for given Object at given location.

Out of bounds cell is (-1, -1).

printLog()

void df::Grid::printLog

(

)

const

Print grid cell count to logfile.

removeObject()

int df::Grid::removeObject

(

Object *

p_o

)

Remove Object from grid.

Return 0 if ok, else -1.

setDimensions()

void df::Grid::setDimensions	(	int	new_width,
		int	new_height
	)

Set dimensions. Deletes and re-creates grid.

shutDown()

void df::Grid::shutDown

(

)

Shutdown (delete grid).

startUp()

int df::Grid::startUp

(

)

Startup (create grid).

Return 0 if ok, else -1.

toString()

std::string df::Grid::toString

(

)

const

Return grid as string.

updatePosition()

int df::Grid::updatePosition	(	Object *	p_o,
		Vector	where
	)

Move Object from old position, add to new position.

Return 0 if ok, else -1.

Member Data Documentation

m_height

int df::Grid::m_height

private

Grid cell height.

m_num_cols

int df::Grid::m_num_cols

private

Number of columns in grid.

m_num_rows

int df::Grid::m_num_rows

private

Number of rows in grid.

m_out_of_bounds

ObjectList df::Grid::m_out_of_bounds

private

All out of bounds objects.

m_p_grid

ObjectList** df::Grid::m_p_grid

private

The grid.

m_width

int df::Grid::m_width

private

Grid cell width.