SnakeGame::Grid Class Reference

Public Member Functions
	Grid (const Dim &dim, const IPositionRandomizerPtr &randomizer=MakeShared< PositionRandomizer >())
Dim	dim () const
void	update (const TPositionPtr *links, CellType cellType)
void	update (const Position &position, CellType cellType)
bool	hitTest (const Position &position, CellType cellType) const
UE_NODISCARD bool	randomEmptyPosition (Position &position) const
void	printDebug ()

Static Public Member Functions
static Position	center (uint32 width, uint32 height)

Private Member Functions
void	initWalls ()
void	updateInternal (const Position &position, CellType cellType)
void	freeCellsByType (CellType cellType)
FORCEINLINE uint32	posToIndex (uint32 x, uint32 y) const
FORCEINLINE uint32	posToIndex (const Position &position) const

Private Attributes
const Dim	c_dim
TArray< CellType >	m_cells
TMap< CellType, TArray< uint32 > >	m_indByType
TSharedPtr< IPositionRandomizer >	m_positionRandomizer

Member Function Documentation

center()

static Position SnakeGame::Grid::center ( uint32  width, uint32  height  )

inlinestatic

Returns center position in grid (walls included)

Parameters

width
height

Returns

Position center of grid

dim()

Dim SnakeGame::Grid::dim ( ) const

inline

Returns grid dimensions including walls (width + 2; height + 2)

Returns

Dim grid dimensions

hitTest()

bool Grid::hitTest	(	const Position &	position,
		CellType	cellType
	)		const

Checks cell type in the given position

Parameters

position	position on the grid
cellType	type of the cell

Returns

bool if hit test was successfull

randomEmptyPosition()

bool Grid::randomEmptyPosition

(

Position &

position

)

const

Returns empty position by ref

Parameters

[out]

position

on the grid

Returns

bool true if empty position exists (if position doesn't exist then snake body fills whole grid)

update() [1/2]

void Grid::update	(	const Position &	position,
		CellType	cellType
	)

Update cell with a given cell type

Parameters

position	position on the grid to be updated
cellType	type of the cell

update() [2/2]

void Grid::update	(	const TPositionPtr *	links,
		CellType	cellType
	)

Update cells with a given cell type

Parameters

links	pointer to the position link
cellType	type of the cell

Member Data Documentation

m_indByType

TMap<CellType, TArray<uint32> > SnakeGame::Grid::m_indByType

private

Initial value:

= {
        {CellType::Snake, {}},  
        {CellType::Wall, {}},   
        {CellType::Food, {}},   
    }

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

• Source/SnakeGame/Core/Grid.h
• Source/SnakeGame/Core/Grid.cpp