Extra tools

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Extra tools are available for running some non-gaming-related tasks, like map optimization by mappers, or debugging and testing by developers. These tools must be run from command-line interface (e.g. Command Prompt on Windows or Terminal on Linux) either by adding their containing directory to the PATH variable or by running directly from the containing directory.

Getting the extra tools

These tools are not provided in the binary DDNet game in the Downloads page. Having that said, extra tools mapping-related can be download for different platforms in the Downloads page, under the name "Graphics Tools".

These and other extra tools (listed below) can be found on the DDNet source code under src/tools directory.

List of extra tools

See below the list and description of the tools.

config_retrieve

 config_retrieve map_file

Retrieves configuration embedded in a DDNet map file map_file and stores it in a DDNet map configuration file with same filename (e.g. "Kobra 4.map" returns "Kobra 4.cfg")

Available since: DDNet 9.0

config_store

 config_store map_file

Stores configuration from a map's configuration file into the map_file. Both configuration and map files must have the same filename in the same directory, otherwise the operation will fail.

If there is no difference between the configuration to stored and the configuration embedded in the map, then operation will be canceled with message configs coincide, not updating map.

Available since: DDNet 9.0

crapnet

 crapnet

Tests connection by setting a client–server connection locally and running ping between them. Reports dropped packets with message dropped packet and successes with cfg = number, where number varies from 0 to 2.

dilate

 dilate image_file1 [image_file2 ... ]

It is a graphics tool, mainly useful for mappers. It takes care of transparent areas to prevent black/white outlines around your images ingame, therefore avoiding blending and mipmap issues. See Edge padding for more info.

Note this works only in RGBA image files. So, it will not work for, for instance, in JPEG files.

dummy_map

 dummy_map

Creates a dummy, small empty map to be used to start a server. See [1] for more info.

fake_server

 fake_server

Creates a fake server for testing.

map_convert_07

 map_convert_07 src_map_file dest_map_file

Makes dest_map_file compatible with Teeworlds version 7.x that otherwise it would be compatible only with Teeworlds version 6.x. If successfully, it creates a valid 07-compatible destination map; otherwise, it returns one of the following:

  • an usage message if incorrect arguments are provided
  • failed to open source map if an error happens when opening the source map
  • failed to open destination map if an error happens when opening the destination map
  • error loading storage if failed to open storage for some reason
  • failed to open image file if error happens on opening PNG image
  • invalid image format if incorrectly formatted PNG.

Available since: DDNet 12.9

map_diff

 map_diff map_file1 map_file2

Compares two map files, reporting one of the follow:

  • no diff output, meaning the maps are the same
  • different layer numbers, if one map has more layers than another
  • different tile layers, if the number of layers is the same, but at least one layer is different
  • lastly, the index and flags positions that differ.

If there is no difference between maps, returns 0; otherwise, returns 1.

map_extract

 map_extract map_file [directory]

Extracts contents from map_file into the directory. If optional argument directory is not provided, extracts to the current directory.

map_optimize

 map_optimize source_map_filepath [dest_map_filepath]

Optimizes the map file in the source_map_filepath given (see how it works) and stores the output in the given dest_map_filepath; if dest_map_filepath is unset, output path defaults to out/source_map_filename.map, stripping the path and the extension of the source file.

Note the name of the embedded images optimized is changed from originalname to originalname_cut_newSHA256 (where newSHA256 is the new sha256 of the embedded optimized image). It is renamed is to make clear it was optimized because this tool will make changes in the mapres used by the map file.

If failed to open source or target file, returns -1.

Available since: DDNet 15.5.4

map_replace_image

 map_replace_image map_file1 map_file2 imagename image_file

Replaces the image imagename currently inside the map filename map_file1 with the image filepath image_file, and save into the map filename map_file2.map.

Please note:

  • Both map filenames must be relative to user default DDNet folder
  • New image filepath can be absolute, or relative to the current directory

map_resave

 map_resave map_file image_file

Updates the map file map_file.map with the provided file image_file.

The error status 255 is returned if 1) a number of arguments different from 2 is provided, 2) if the map_file.map is not valid, or 3) if image_file is not a valid image file (e.g. it is a text file); otherwise, return 0.

packetgen

 packetgen

Generates and sends network packets to 127.0.0.1:8303 (localhost, in default server port) to test communication with a local server instance.

unicode_confusables

 unicode_confusables string1 string2

Compares string1 with string2 and report if they are "confusable", i.e. if the characters are "equal" and could cause confusion. For this to work, the characters with accents or other things around them are considered the "confusable" with the base character. Therefore, aa and are confusable (á was considered as a), while aa and ab are not.

If they are confusable, it returns not_confusable=0, otherwise, returns not_confusable=1.

Available since: DDNet version 10.3.5

New in DDNet version 12.9: Unicode 12.0 support and the tool name was renamed from confusables to unicode_confusables.

uuid

 uuid name

Prints uuid for the provided name.

The uuid system was implemented to be easily extended by independent authors without collisions, something that the old system – with increasing integers – did not allow. This works for engine and game messages, snapshot items and events.

Exits with error status 255 if name is not provided.

Available since: DDNet 10.6.1