expand2x.cpp File Reference

#include <stdlib.h>
#include <expand2x.h>

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Functions
static int	calc_pattern (char ch, char **layout, int i, int j, int xsize, int ysize)
char **	expand2x (char **layout, int xsize, int ysize)
static void	expand_door (char **newlayout, int i, int j, char **layout, int xsize, int ysize)
static void	expand_misc (char **newlayout, int i, int j, char **layout)
static void	expand_wall (char **newlayout, int i, int j, char **layout, int xsize, int ysize)

Detailed Description

Expands a layout by 2x in each dimension.

H. S. Teoh

Definition in file expand2x.cpp.

Function Documentation

calc_pattern()

static int calc_pattern ( char  ch, char **  layout, int  i, int  j, int  xsize, int  ysize  )

static

Returns a bitmap that represents which squares on the right and bottom edges of a square (i,j) match the given character.

Parameters

ch	character to look for.
layout	map.
i
j	spot where to look.
xsize
ysize	layout size.

Returns

combination of the following values:

• 1 means match on (i+1, j).
• 2 means match on (i, j+1).
• 4 means match on (i+1, j+1).

Definition at line 121 of file expand2x.cpp.

Referenced by expand_door(), and expand_wall().

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expand2x()

char** expand2x	(	char **	layout,
		int	xsize,
		int	ysize
	)

Expands the layout be a factor 2. Doors and walls are taken care of.

Parameters

layout	layout to expand. Memory is free()d at the end, so pointer becomes invalid.
xsize
ysize	layout size.

Returns

new layout. Must be free()d by caller.

Definition at line 43 of file expand2x.cpp.

References expand_door(), expand_misc(), and expand_wall().

Referenced by layoutgen().

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expand_door()

static void expand_door ( char **  newlayout, int  i, int  j, char **  layout, int  xsize, int  ysize  )

static

Expand a door. This function will try to sensibly connect doors so that they meet up with adjacent walls. Note that it will also presumptuously delete (ignore) doors that it doesn't know how to correctly expand.

Parameters

newlayout	expanded layout.
i
j	coordinates of door to expand in non expanded layout.
layout	non expanded layout.
xsize
ysize	size of non expanded layout.

Definition at line 199 of file expand2x.cpp.

References calc_pattern().

Referenced by expand2x().

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expand_misc()

static void expand_misc ( char **  newlayout, int  i, int  j, char **  layout  )

static

Copy the old tile X into the new one at location (i*2, j*2) and fill up the rest of the 2x2 result with 0: X —> X 0 0 0

Parameters

newlayout	map layout.
i
j	spot to expand.
layout	map layout.

Definition at line 94 of file expand2x.cpp.

Referenced by expand2x().

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expand_wall()

static void expand_wall ( char **  newlayout, int  i, int  j, char **  layout, int  xsize, int  ysize  )

static

Expand a wall. This function will try to sensibly connect the resulting wall to adjacent wall squares, so that the result won't have disconnected walls.

Parameters

newlayout	map layout.
i
j	coordinates of wall to expand in non expanded layout.
layout	current (non expanded) layout.
xsize
ysize	sizes of layout.

Definition at line 156 of file expand2x.cpp.

References calc_pattern().

Referenced by expand2x().

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