grfcodec1

Usage

Options

-?

Display the help message.

-e

Encode a GRF file. The GRF‐file to pass is the file where to encode to. The source of the GRF‐file, i.e. the .nfo, will be looked for in sprites/GRF‐file.nfo. All graphics files will be searched for relative from the location of the GRF‐file.

-d

Decode a GRF file. The GRF‐file to pass is the file to decode. The result will be in sprites/GRF‐file.nfo and sprites/GRF‐file.png.

-s

Silences the progress output in interactive mode

-v

Display the version.

Options for decoding:

-w num

Write spritesheets files with the given width (default 800, minimum 16)

-h num

Split spritesheets when they reach this height (default no limit, minimum 16)

-b num

Organize sprites in boxes of this size (default 16)

-o ssf

Sets the format of generated spritesheets. See -o ? for a list.

-p pal

Use this palette instead of the default. See -p ? for a list.

-t

Disable decoding of plain text characters as strings.

-x

Disable production of unquoted escape sequences.

-xx

Disable production of both quoted and unquoted escape sequences.

This has the side effect of producing a version 6 .nfo, instead of a version 7 .nfo.

-X

List sprite numbers in the image file in hex.

Options for encoding:

-c

Crop extraneous transparent blue from real sprites

-u

Save uncompressed data (probably not a good idea)

-q

Suppress warning messages

-g num

Create a GRF file with the given container version. Valid versions are 1 and 2, where the latter allows bigger sprites, larger sounds, and multiple zoom levels and bit depths for the sprites.

-n

Try both compression algorithms and use the most efficient. This might cause trouble when loading the NewGRF in TTDPatch.

Options for both encoding and decoding:

-m num

Apply colour translation to all sprites except character‐glyphs.

-M num

Apply colour translation to all sprites.

If both of these are specified, only the last is obeyed. -m ? or -M ? for a list of colour translations.