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snes9x/crosshairs.cpp
Brandon Wright 5f56cadafb Use a license stub everywhere. 
This points to the full license in the root directory.
2018-11-15 17:31:39 -06:00

512 lines
11 KiB
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/*****************************************************************************\
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
This file is licensed under the Snes9x License.
For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/
#ifdef HAVE_LIBPNG
#include <png.h>
#endif
#include "port.h"
#include "crosshairs.h"
static const char *crosshairs[32] =
{
"` " // Crosshair 0 (no image)
" "
" "
" "
" "
" "
" "
" "
" "
" "
" "
" "
" "
" "
" ",
"` " // Crosshair 1 (the classic small dot)
" "
" "
" "
" "
" "
" "
" #. "
" "
" "
" "
" "
" "
" "
" ",
"` " // Crosshair 2 (a standard cross)
" "
" "
" "
" .#. "
" .#. "
" ...#... "
" ####### "
" ...#... "
" .#. "
" .#. "
" "
" "
" "
" ",
"` .#. " // Crosshair 3 (a standard cross)
" .#. "
" .#. "
" .#. "
" .#. "
" .#. "
".......#......."
"###############"
".......#......."
" .#. "
" .#. "
" .#. "
" .#. "
" .#. "
" .#. ",
"` " // Crosshair 4 (an X)
" "
" "
" . . "
" .#. .#. "
" .#. .#. "
" .#.#. "
" .#. "
" .#.#. "
" .#. .#. "
" .#. .#. "
" . . "
" "
" "
" ",
"`. . " // Crosshair 5 (an X)
".#. .#."
" .#. .#. "
" .#. .#. "
" .#. .#. "
" .#. .#. "
" .#.#. "
" .#. "
" .#.#. "
" .#. .#. "
" .#. .#. "
" .#. .#. "
" .#. .#. "
".#. .#."
" . . ",
"` " // Crosshair 6 (a combo)
" "
" "
" "
" # . # "
" # . # "
" #.# "
" ...#... "
" #.# "
" # . # "
" # . # "
" "
" "
" "
" ",
"` . " // Crosshair 7 (a combo)
" # . # "
" # . # "
" # . # "
" # . # "
" # . # "
" #.# "
".......#......."
" #.# "
" # . # "
" # . # "
" # . # "
" # . # "
" # . # "
" . ",
"` # " // Crosshair 8 (a diamond cross)
" #.# "
" # . # "
" # . # "
" # . # "
" # . # "
" # . # "
"#......#......#"
" # . # "
" # . # "
" # . # "
" # . # "
" # . # "
" #.# "
" # ",
"` ### " // Crosshair 9 (a circle cross)
" ## . ## "
" # . # "
" # . # "
" # . # "
" # . # "
"# . #"
"#......#......#"
"# . #"
" # . # "
" # . # "
" # . # "
" # . # "
" ## . ## "
" ### ",
"` .#. " // Crosshair 10 (a square cross)
" .#. "
" .#. "
" ....#.... "
" .#######. "
" .# #. "
"....# #...."
"##### #####"
"....# #...."
" .# #. "
" .#######. "
" ....#.... "
" .#. "
" .#. "
" .#. ",
"` .#. " // Crosshair 11 (an interrupted cross)
" .#. "
" .#. "
" .#. "
" .#. "
" "
"..... ....."
"##### #####"
"..... ....."
" "
" .#. "
" .#. "
" .#. "
" .#. "
" .#. ",
"`. . " // Crosshair 12 (an interrupted X)
".#. .#."
" .#. .#. "
" .#. .#. "
" .#. .#. "
" "
" "
" "
" "
" "
" .#. .#. "
" .#. .#. "
" .#. .#. "
".#. .#."
" . . ",
"` . " // Crosshair 13 (an interrupted combo)
" # . # "
" # . # "
" # . # "
" # . # "
" "
" "
"..... ....."
" "
" "
" # . # "
" # . # "
" # . # "
" # . # "
" . ",
"`#### #### " // Crosshair 14
"#.... ....#"
"#. .#"
"#. .#"
"#. .#"
" # "
" # "
" ##### "
" # "
" # "
"#. .#"
"#. .#"
"#. .#"
"#.... ....#"
" #### #### ",
"` .# #. " // Crosshair 15
" .# #. "
" .# #. "
"....# #...."
"##### #####"
" "
" "
" "
" "
" "
"##### #####"
"....# #...."
" .# #. "
" .# #. "
" .# #. ",
"` # " // Crosshair 16
" # "
" # "
" ....#.... "
" . # . "
" . # . "
" . # . "
"###############"
" . # . "
" . # . "
" . # . "
" ....#.... "
" # "
" # "
" # ",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
};
bool S9xLoadCrosshairFile (int idx, const char *filename)
{
if (idx < 1 || idx > 31)
return (false);
char *s = (char *) calloc(15 * 15 + 1, sizeof(char));
if (s == NULL)
{
fprintf(stderr, "S9xLoadCrosshairFile: malloc error while reading ");
perror(filename);
return (false);
}
FILE *fp = fopen(filename, "rb");
if (fp == NULL)
{
fprintf(stderr, "S9xLoadCrosshairFile: Couldn't open ");
perror(filename);
free(s);
return (false);
}
size_t l = fread(s, 1, 8, fp);
if (l != 8)
{
fprintf(stderr, "S9xLoadCrosshairFile: File is too short!\n");
free(s);
fclose(fp);
return (false);
}
#ifdef HAVE_LIBPNG
png_structp png_ptr;
png_infop info_ptr;
if (!png_sig_cmp((png_byte *) s, 0, 8))
{
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png_ptr)
{
free(s);
fclose(fp);
return (false);
}
info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr)
{
png_destroy_read_struct(&png_ptr, (png_infopp) NULL, (png_infopp) NULL);
free(s);
fclose(fp);
return (false);
}
png_init_io(png_ptr, fp);
png_set_sig_bytes(png_ptr, 8);
png_read_info(png_ptr, info_ptr);
png_uint_32 width, height;
int bit_depth, color_type;
png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, NULL, NULL, NULL);
if (color_type != PNG_COLOR_TYPE_PALETTE)
{
fprintf(stderr, "S9xLoadCrosshairFile: Input PNG is not a palettized image!\n");
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
free(s);
fclose(fp);
return (false);
}
if (bit_depth == 16)
png_set_strip_16(png_ptr);
if (width != 15 || height != 15)
{
fprintf(stderr, "S9xLoadCrosshairFile: Expecting a 15x15 PNG\n");
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
free(s);
fclose(fp);
return (false);
}
png_color *pngpal;
png_byte *trans;
int num_palette = 0, num_trans = 0;
int transcol = -1, fgcol = -1, bgcol = -1;
png_get_PLTE(png_ptr, info_ptr, &pngpal, &num_palette);
png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans, NULL);
if (num_palette != 3 || num_trans != 1)
{
fprintf(stderr, "S9xLoadCrosshairFile: Expecting a 3-color PNG with 1 trasnparent color\n");
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
free(s);
fclose(fp);
return (false);
}
for (int i = 0; i < 3; i++)
{
if (trans[0] == i)
transcol = i;
else
if (pngpal[i].red == 0 && pngpal[i].green == 0 && pngpal[i].blue == 0)
bgcol = i;
else
if (pngpal[i].red == 255 && pngpal[i].green == 255 && pngpal[i].blue == 255)
fgcol = i;
}
if (transcol < 0 || fgcol < 0 || bgcol < 0)
{
fprintf(stderr, "S9xLoadCrosshairFile: PNG must have 3 colors: white (fg), black (bg), and transparent.\n");
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
free(s);
fclose(fp);
return (false);
}
png_set_packing(png_ptr);
png_read_update_info(png_ptr, info_ptr);
png_byte *row_pointer = new png_byte[png_get_rowbytes(png_ptr, info_ptr)];
for (int r = 0; r < 15 * 15; r += 15)
{
png_read_row(png_ptr, row_pointer, NULL);
for (int i = 0; i < 15; i++)
{
if (row_pointer[i] == transcol)
s[r + i] = ' ';
else
if (row_pointer[i] == fgcol)
s[r + i] = '#';
else
if (row_pointer[i] == bgcol)
s[r + i] = '.';
else
{
fprintf(stderr, "S9xLoadCrosshairFile: WTF? This was supposed to be a 3-color PNG!\n");
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
free(s);
fclose(fp);
return (false);
}
}
}
s[15 * 15] = 0;
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
}
else
#endif
{
l = fread(s + 8, 1, 15 - 8, fp);
if (l != 15 - 8)
{
fprintf(stderr, "S9xLoadCrosshairFile: File is too short!\n");
free(s);
fclose(fp);
return (false);
}
if (getc(fp) != '\n')
{
fprintf(stderr, "S9xLoadCrosshairFile: Invalid file format! (note: PNG support is not available)\n");
free(s);
fclose(fp);
return (false);
}
for (int r = 1; r < 15; r++)
{
l = fread(s + r * 15, 1, 15, fp);
if (l != 15)
{
fprintf(stderr, "S9xLoadCrosshairFile: File is too short! (note: PNG support is not available)\n");
free(s);
fclose(fp);
return (false);
}
if (getc(fp) != '\n')
{
fprintf(stderr, "S9xLoadCrosshairFile: Invalid file format! (note: PNG support is not available)\n");
free(s);
fclose(fp);
return (false);
}
}
for (int i = 0; i < 15 * 15; i++)
{
if (s[i] != ' ' && s[i] != '#' && s[i] != '.')
{
fprintf(stderr, "S9xLoadCrosshairFile: Invalid file format! (note: PNG support is not available)\n");
free(s);
fclose(fp);
return (false);
}
}
}
fclose(fp);
if (crosshairs[idx] != NULL && crosshairs[idx][0] != '`')
free((void *) crosshairs[idx]);
crosshairs[idx] = s;
return (true);
}
const char * S9xGetCrosshair (int idx)
{
if (idx < 0 || idx > 31)
return (NULL);
return (crosshairs[idx]);
}
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