119 lines
2.2 KiB
Plaintext
119 lines
2.2 KiB
Plaintext
.TH DPIC 1
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.SH NAME
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dpic, todpic \- Doom picture decoder and encoder
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.SH SYNOPSIS
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.B dpic
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[
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.B -f
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] [
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.B -p
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.I palette
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] [
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.I pic
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]
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.PP
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.B todpic
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[
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.B -fw
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] [
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.B -b
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.I bgcol
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] [
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.B -p
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.I palette
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] [
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.I image
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]
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.SH DESCRIPTION
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.I Dpic
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reads a doom picture formatted image (default standard input),
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converts it to a Plan 9
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.IR image (6)
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and writes it to standard out.
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.I Todpic
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does the opposite transformation.
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.PP
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A color palette is needed for the process;
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its location is set to
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.B /mnt/wad/playpal
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by default.
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This may be overridden with the
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.B -p
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command line option.
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Both programs also accept an
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.B -f
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flag to indicate processing a doom 64x64 flat picture.
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.PP
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When encoding a doom picture,
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x and y offsets are set to the input's top left corner coordinates.
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The
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.B -w
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flag sets the offsets so as to center the picture when drawn by the doom engine,
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which is useful for wall patches.
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The
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.B -b
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option sets the RGB24 color to signal transparent pixels,
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.L 0x00FFFF
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by default.
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.SH EXAMPLES
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Create a patch
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.I WAD
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(see
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.IR wadfs (4))
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replacing a sky texture.
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First, create a 256x128 image, mirror it, and convert it for use with
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.IR tweak (1).
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.IP
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.EX
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% png -9t tuttleglenda.png \\
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| resample -x 128 -y 128 \\
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| crop -r 0 0 256 128 \\
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| rotate -l \\
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| iconv -c m8 > tuttlesky
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.EE
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.PP
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Next, use
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.IR tweak (1)
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to tile the 128x128 picture.
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Then, mount an
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.I IWAD
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containing the base color palette, convert to a doom picture,
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create a patch
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.IR WAD ,
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then launch doom using it.
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.IP
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.EX
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% games/wadfs /sys/games/lib/doom/doom2.wad
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createfile SW18_7: file already exists
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% games/wadfs -m /mnt/new
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% games/todpic tuttlesky > /mnt/new/rsky1
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% cp /mnt/new/WAD tuttle.wad
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% games/doom -file tuttle.wad
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.EE
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.PP
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Create a crude catclock weapon sprite.
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.IP
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.EX
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% games/wadfs /sys/games/lib/doom/doom2.wad
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createfile SW18_7: file already exists
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% mkdir /mnt/new/s
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adding end marker S_END
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% cp /mnt/wad/s/* /mnt/new/s/
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% crop -r 0 0 114 120 -t -120 -60 catclock.bit \\
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| games/todpic -b 0xffffff > /mnt/new/s/punga0
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% games/doom -file /mnt/new/WAD
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.EE
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.SH SOURCE
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.B /sys/src/games/dpic.c
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.br
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.B /sys/src/games/todpic.c
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.SH "SEE ALSO"
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.IR games (1),
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.IR tweak (1),
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.IR wadfs (4)
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.SH HISTORY
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.I Dpic
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and
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.I todpic
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first appeared in 9front (July, 2018).
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