mirror of
https://github.com/libretro/snes9x.git
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512 lines
11 KiB
C++
512 lines
11 KiB
C++
/*****************************************************************************\
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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This file is licensed under the Snes9x License.
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For further information, consult the LICENSE file in the root directory.
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\*****************************************************************************/
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#ifdef HAVE_LIBPNG
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#include <png.h>
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#endif
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#include "port.h"
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#include "crosshairs.h"
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static const char *crosshairs[32] =
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{
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"` " // Crosshair 0 (no image)
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" "
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" "
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" "
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" "
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" "
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" "
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" "
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" "
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" "
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" "
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" "
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" "
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" "
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" ",
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"` " // Crosshair 1 (the classic small dot)
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" "
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" "
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" "
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" "
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" "
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" "
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" #. "
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" "
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" "
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" "
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" "
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" "
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" "
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" ",
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"` " // Crosshair 2 (a standard cross)
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" "
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" "
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" "
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" .#. "
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" .#. "
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" ...#... "
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" ####### "
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" ...#... "
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" .#. "
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" .#. "
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" "
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" "
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" "
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" ",
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"` .#. " // Crosshair 3 (a standard cross)
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" .#. "
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" .#. "
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" .#. "
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" .#. "
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" .#. "
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".......#......."
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"###############"
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".......#......."
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" .#. "
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" .#. "
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" .#. "
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" .#. "
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" .#. "
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" .#. ",
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"` " // Crosshair 4 (an X)
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" "
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" "
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" . . "
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" .#. .#. "
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" .#. .#. "
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" .#.#. "
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" .#. "
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" .#.#. "
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" .#. .#. "
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" .#. .#. "
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" . . "
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" "
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" "
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" ",
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"`. . " // Crosshair 5 (an X)
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".#. .#."
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" .#. .#. "
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" .#. .#. "
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" .#. .#. "
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" .#. .#. "
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" .#.#. "
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" .#. "
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" .#.#. "
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" .#. .#. "
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" .#. .#. "
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" .#. .#. "
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" .#. .#. "
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".#. .#."
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" . . ",
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"` " // Crosshair 6 (a combo)
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" "
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" "
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" "
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" # . # "
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" # . # "
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" #.# "
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" ...#... "
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" #.# "
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" # . # "
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" # . # "
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" "
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" "
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" "
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" ",
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"` . " // Crosshair 7 (a combo)
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" #.# "
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".......#......."
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" #.# "
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" . ",
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"` # " // Crosshair 8 (a diamond cross)
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" #.# "
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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"#......#......#"
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" #.# "
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" # ",
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"` ### " // Crosshair 9 (a circle cross)
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" ## . ## "
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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"# . #"
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"#......#......#"
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"# . #"
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" ## . ## "
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" ### ",
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"` .#. " // Crosshair 10 (a square cross)
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" .#. "
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" .#. "
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" ....#.... "
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" .#######. "
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" .# #. "
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"....# #...."
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"##### #####"
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"....# #...."
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" .# #. "
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" .#######. "
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" ....#.... "
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" .#. "
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" .#. "
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" .#. ",
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"` .#. " // Crosshair 11 (an interrupted cross)
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" .#. "
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" .#. "
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" .#. "
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" .#. "
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" "
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"..... ....."
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"##### #####"
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"..... ....."
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" "
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" .#. "
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" .#. "
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" .#. "
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" .#. "
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" .#. ",
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"`. . " // Crosshair 12 (an interrupted X)
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".#. .#."
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" .#. .#. "
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" .#. .#. "
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" .#. .#. "
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" "
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" "
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" "
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" "
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" "
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" .#. .#. "
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" .#. .#. "
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" .#. .#. "
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".#. .#."
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" . . ",
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"` . " // Crosshair 13 (an interrupted combo)
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" "
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" "
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"..... ....."
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" "
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" "
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" # . # "
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" # . # "
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" # . # "
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" # . # "
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" . ",
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"`#### #### " // Crosshair 14
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"#.... ....#"
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"#. .#"
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"#. .#"
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"#. .#"
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" # "
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" # "
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" ##### "
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" # "
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" # "
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"#. .#"
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"#. .#"
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"#. .#"
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"#.... ....#"
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" #### #### ",
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"` .# #. " // Crosshair 15
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" .# #. "
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" .# #. "
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"....# #...."
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"##### #####"
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" "
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" "
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" "
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" "
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" "
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"##### #####"
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"....# #...."
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" .# #. "
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" .# #. "
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" .# #. ",
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"` # " // Crosshair 16
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" # "
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" # "
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" ....#.... "
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" . # . "
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" . # . "
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" . # . "
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"###############"
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" . # . "
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" . # . "
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" . # . "
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" ....#.... "
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" # "
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" # "
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" # ",
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
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};
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bool S9xLoadCrosshairFile (int idx, const char *filename)
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{
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if (idx < 1 || idx > 31)
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return (false);
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char *s = (char *) calloc(15 * 15 + 1, sizeof(char));
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if (s == NULL)
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{
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fprintf(stderr, "S9xLoadCrosshairFile: malloc error while reading ");
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perror(filename);
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return (false);
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}
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FILE *fp = fopen(filename, "rb");
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if (fp == NULL)
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{
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fprintf(stderr, "S9xLoadCrosshairFile: Couldn't open ");
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perror(filename);
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free(s);
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return (false);
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}
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size_t l = fread(s, 1, 8, fp);
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if (l != 8)
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{
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fprintf(stderr, "S9xLoadCrosshairFile: File is too short!\n");
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free(s);
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fclose(fp);
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return (false);
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}
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#ifdef HAVE_LIBPNG
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png_structp png_ptr;
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png_infop info_ptr;
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if (!png_sig_cmp((png_byte *) s, 0, 8))
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{
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png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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if (!png_ptr)
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{
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free(s);
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fclose(fp);
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return (false);
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}
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info_ptr = png_create_info_struct(png_ptr);
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if (!info_ptr)
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{
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png_destroy_read_struct(&png_ptr, (png_infopp) NULL, (png_infopp) NULL);
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free(s);
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fclose(fp);
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return (false);
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}
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png_init_io(png_ptr, fp);
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png_set_sig_bytes(png_ptr, 8);
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png_read_info(png_ptr, info_ptr);
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png_uint_32 width, height;
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int bit_depth, color_type;
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png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, NULL, NULL, NULL);
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if (color_type != PNG_COLOR_TYPE_PALETTE)
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{
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fprintf(stderr, "S9xLoadCrosshairFile: Input PNG is not a palettized image!\n");
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png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
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free(s);
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fclose(fp);
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return (false);
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}
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if (bit_depth == 16)
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png_set_strip_16(png_ptr);
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if (width != 15 || height != 15)
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{
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fprintf(stderr, "S9xLoadCrosshairFile: Expecting a 15x15 PNG\n");
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png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
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free(s);
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fclose(fp);
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return (false);
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}
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png_color *pngpal;
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png_byte *trans;
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int num_palette = 0, num_trans = 0;
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int transcol = -1, fgcol = -1, bgcol = -1;
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png_get_PLTE(png_ptr, info_ptr, &pngpal, &num_palette);
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png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans, NULL);
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if (num_palette != 3 || num_trans != 1)
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{
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fprintf(stderr, "S9xLoadCrosshairFile: Expecting a 3-color PNG with 1 trasnparent color\n");
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png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
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free(s);
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fclose(fp);
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return (false);
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}
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for (int i = 0; i < 3; i++)
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{
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if (trans[0] == i)
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transcol = i;
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else
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if (pngpal[i].red == 0 && pngpal[i].green == 0 && pngpal[i].blue == 0)
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bgcol = i;
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else
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if (pngpal[i].red == 255 && pngpal[i].green == 255 && pngpal[i].blue == 255)
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fgcol = i;
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}
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if (transcol < 0 || fgcol < 0 || bgcol < 0)
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{
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fprintf(stderr, "S9xLoadCrosshairFile: PNG must have 3 colors: white (fg), black (bg), and transparent.\n");
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png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
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free(s);
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fclose(fp);
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return (false);
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}
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png_set_packing(png_ptr);
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png_read_update_info(png_ptr, info_ptr);
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png_byte *row_pointer = new png_byte[png_get_rowbytes(png_ptr, info_ptr)];
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for (int r = 0; r < 15 * 15; r += 15)
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{
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png_read_row(png_ptr, row_pointer, NULL);
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for (int i = 0; i < 15; i++)
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{
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if (row_pointer[i] == transcol)
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s[r + i] = ' ';
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else
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if (row_pointer[i] == fgcol)
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s[r + i] = '#';
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else
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if (row_pointer[i] == bgcol)
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s[r + i] = '.';
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else
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{
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fprintf(stderr, "S9xLoadCrosshairFile: WTF? This was supposed to be a 3-color PNG!\n");
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png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
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free(s);
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fclose(fp);
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return (false);
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}
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}
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}
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s[15 * 15] = 0;
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png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL);
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}
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else
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#endif
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{
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l = fread(s + 8, 1, 15 - 8, fp);
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if (l != 15 - 8)
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{
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fprintf(stderr, "S9xLoadCrosshairFile: File is too short!\n");
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free(s);
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fclose(fp);
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return (false);
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}
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if (getc(fp) != '\n')
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{
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fprintf(stderr, "S9xLoadCrosshairFile: Invalid file format! (note: PNG support is not available)\n");
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free(s);
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fclose(fp);
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return (false);
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}
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for (int r = 1; r < 15; r++)
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{
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l = fread(s + r * 15, 1, 15, fp);
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if (l != 15)
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{
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fprintf(stderr, "S9xLoadCrosshairFile: File is too short! (note: PNG support is not available)\n");
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free(s);
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fclose(fp);
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return (false);
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}
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if (getc(fp) != '\n')
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{
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fprintf(stderr, "S9xLoadCrosshairFile: Invalid file format! (note: PNG support is not available)\n");
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free(s);
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fclose(fp);
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return (false);
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}
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}
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for (int i = 0; i < 15 * 15; i++)
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{
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if (s[i] != ' ' && s[i] != '#' && s[i] != '.')
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{
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fprintf(stderr, "S9xLoadCrosshairFile: Invalid file format! (note: PNG support is not available)\n");
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free(s);
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fclose(fp);
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return (false);
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}
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}
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}
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fclose(fp);
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if (crosshairs[idx] != NULL && crosshairs[idx][0] != '`')
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free((void *) crosshairs[idx]);
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crosshairs[idx] = s;
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return (true);
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}
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const char * S9xGetCrosshair (int idx)
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{
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if (idx < 0 || idx > 31)
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return (NULL);
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return (crosshairs[idx]);
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}
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