TileMap Class Reference

Define the tilemap functions and variables. More...

#include <TileMap.hpp>

Inheritance diagram for TileMap:

Collaboration diagram for TileMap:

Public Member Functions
	TileMap (std::string tileSheetFileName, int rows, int cols, int _TileWidth, int _TileHeight, int _TileWindowWidth, int _TileWindowHeight, int _mapX, int _mapY, SDL_Renderer *ren)
	Constructor. More...
	~TileMap ()
	Destructor. More...
void	GenerateSimpleMap (const char *const filePath)
	Read the data in local tile sheet and call SetTile(). More...
void	PrintMap ()
	Output the value in m_Tiles into console. More...
void	SetTile (int x, int y, int type)
	Set type of each tile. More...
void	UpdateTile (int x, int y, int type)
	Update the type of a specified tile. More...
int	GetTileType (int x, int y)
	Get the type of a specified tile. More...
int	CheckCollidable (int x, int y)
	Determines whether the given tile is a collidable tile. More...
int *	GetTileArr ()
	Get the array which stores the whole tilemap. More...
void	Render (SDL_Renderer *ren, Camera *camera)
	Render something to the active viewport. More...
void	SetupTileMap ()
	Set the value of all the tiles to -1. More...
void	SaveTileMap (const char *const filePath)
	Save current tilemap to local file. More...
void	addTile (int srcRow, int srcCol, int destRow, int destCol)
	Change the type of a specifed tile. More...
int	GetBeneathGround (int x, int y)
	Given enemy pos, return the landable tile pos. More...
int	RayCast (int x1, int y1, int x2, int y2)
	Create a raycast to detect player's position. More...
int	fastDist (int dx, int dy)
	fastly approximate how many tiles there are between 2 tiles. ref: https://stackoverflow.com/questions/7913511/distance-approximation More...
bool	CheckWalkable (int x, int y, int movingRight)
	check if the given tile is walkable More...
Position	generateRandomDungeon ()
	generate a random dungeon with the BSP Map Generator More...
void	autoTiling ()
	automatically redraw the tile map to make the whole map look nicer More...
void	autoTileGrid (int x, int y)
	look at the 3*3 area around the current grid to determine the proper tile to draw More...
Public Member Functions inherited from Component
	Component ()
	~Component ()

Detailed Description

Define the tilemap functions and variables.

This class offers functions to initialize, update as well as download the whole map.

Constructor & Destructor Documentation

TileMap()

TileMap::TileMap	(	std::string	tileSheetFileName,
		int	rows,
		int	cols,
		int	_TileWidth,
		int	_TileHeight,
		int	_TileWindowWidth,
		int	_TileWindowHeight,
		int	_mapX,
		int	_mapY,
		SDL_Renderer *	ren
	)

Constructor.

Parameters

tileSheetFileName	The name of the source file which stores the tile sheet.
rows	How many rows are in the tile sheet.
cols	How many columns are in the tile sheet.
_TileWidth	Each tile's width in pixel in source file.
_TileHeight	Each tile's height in pixel in source file.
_TileWindowWidth	Each tile's width in pixel in game.
_TileWindowHeight	Each tile's height in pixel in game.
_mapX	Total cols of tiles in the current map.
_mapY	Total rows of tiles in the current map.
ren	Reference to SDL renderer.

~TileMap()

TileMap::~TileMap

(

)

Destructor.

Member Function Documentation

addTile()

void TileMap::addTile	(	int	srcRow,
		int	srcCol,
		int	destRow,
		int	destCol
	)

Change the type of a specifed tile.

Change the type of a specified tile based on the selected tile. This function only works in Tilemap editor page.

Parameters

srcRow	The number of rows of the selected tile.
srcCol	The number of columns of the selected tile.
destRow	The number of rows of the tile you want to modify.
destCol	The number of columns of the tile you want to modify.

autoTileGrid()

void TileMap::autoTileGrid	(	int	x,
		int	y
	)

look at the 3*3 area around the current grid to determine the proper tile to draw

autoTiling()

void TileMap::autoTiling

(

)

automatically redraw the tile map to make the whole map look nicer

CheckCollidable()

int TileMap::CheckCollidable	(	int	x,
		int	y
	)

Determines whether the given tile is a collidable tile.

CheckWalkable()

bool TileMap::CheckWalkable	(	int	x,
		int	y,
		int	movingRight
	)

check if the given tile is walkable

fastDist()

int TileMap::fastDist	(	int	dx,
		int	dy
	)

fastly approximate how many tiles there are between 2 tiles. ref: https://stackoverflow.com/questions/7913511/distance-approximation

Parameters

dx	X-coordinate difference.
dy	Y-coordinate difference.

generateRandomDungeon()

Position TileMap::generateRandomDungeon

(

)

generate a random dungeon with the BSP Map Generator

Returns

the start position of the dungeon

GenerateSimpleMap()

void TileMap::GenerateSimpleMap

(

const char *const

filePath

)

Read the data in local tile sheet and call SetTile().

Parameters

filePath

The file name of the local tile sheet.

GetBeneathGround()

int TileMap::GetBeneathGround	(	int	x,
		int	y
	)

Given enemy pos, return the landable tile pos.

Check the tile under the character.

Parameters

x	The number of rows of the tile based on player's position.
y	The number of columns of the tile based on player's position..

Returns

The first tile under the player.

GetTileArr()

int * TileMap::GetTileArr

(

)

Get the array which stores the whole tilemap.

Returns

A pointer of an array.

GetTileType()

int TileMap::GetTileType	(	int	x,
		int	y
	)

Get the type of a specified tile.

Parameters

x	The number of columns of this tile.
y	The number of rows of this tile.

Returns

The type of this tile.

PrintMap()

void TileMap::PrintMap

(

)

Output the value in m_Tiles into console.

RayCast()

int TileMap::RayCast	(	int	x1,
		int	y1,
		int	x2,
		int	y2
	)

Create a raycast to detect player's position.

Check is p(x1, y1) could see p(x2, y2)

Parameters

x1	X-coordinate of this enemy.
y1	Y-coordinate of this enemy.
x2	X-coordinate of the player.
y2	Y-coordinate of the player.

Returns

The distance between this enemy and the player.

Render()

void TileMap::Render	(	SDL_Renderer *	ren,
		Camera *	camera
	)

Render something to the active viewport.

Parameters

ren	Reference to SDL renderer
camera	Reference to Camera

SaveTileMap()

void TileMap::SaveTileMap

(

const char *const

filePath

)

Save current tilemap to local file.

Parameters

filePath

Reference to the target file name of this tilemap.

SetTile()

void TileMap::SetTile	(	int	x,
		int	y,
		int	type
	)

Set type of each tile.

Parameters

x	The number of columns of the current tile.
y	The number of rows of the current tile.
type	The type of the current tile.

SetupTileMap()

void TileMap::SetupTileMap

(

)

Set the value of all the tiles to -1.

UpdateTile()

void TileMap::UpdateTile	(	int	x,
		int	y,
		int	type
	)

Update the type of a specified tile.

Parameters

x	The number of columns of this tile.
y	The number of rows of this tile.
type	The new type of this tile.