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A note about the progress of the switchover to custom scenery support
(A note a about a recent taxidraw bug fix.) |
(A note about the progress of the switchover to custom scenery support) |
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For example, see the ground network for EHAM, which is found in <tt>data/Airports/AI/EHAM/parking.xml</tt>. See the end of this page for a small | For example, see the ground network for EHAM, which is found in <tt>data/Airports/AI/EHAM/parking.xml</tt>. See the end of this page for a small | ||
excerpt from this file. It should be noted that current development work is planned that aims to move these files from the base package to the scenery repository, so that ground network information and the physical layout of the airport can be updated in parallel. Once this is done, the new location / name for the file will be [fg-scenery]/Airports/[ICAO1]/[ICAO2]/[ICA03]/[ICAO].groundnet.xml. Here [ICAO] stands for the 4 letter ICAO code of the airport in question, and [ICAO1], [ICAO2], and [ICAO3] for the first to third letter of this code. This | excerpt from this file. It should be noted that current development work is planned that aims to move these files from the base package to the scenery repository, so that ground network information and the physical layout of the airport can be updated in parallel. Once this is done, the new location / name for the file will be [fg-scenery]/Airports/[ICAO1]/[ICAO2]/[ICA03]/[ICAO].groundnet.xml. Here [ICAO] stands for the 4 letter ICAO code of the airport in question, and [ICAO1], [ICAO2], and [ICAO3] for the first to third letter of this code. | ||
'''NOTE:''' Taxidraw versions with a build date of Feb. 1st, or later, 2009 support the new naming convention. To make use of this new functionality, make sure to set the FlightGear scenery directory in TaxiDraw (tab 4 in the preferences menu). The directory specified here should be the top level directory, i.e. the one that contains the "Airports", "Objects", and "Terrain" subdirectory. | |||
In addition, FlightGear cvs of approximately the same date also has support for reading the ground networks from the scenery directory. This feature is not enabled by default. To enable, make sure the property /sim/traffic-manager/use-custom-scenery-data is set to true. This can be done by editing preferences.xml or specifying this property on the command line. | |||
== A technical perspective == | == A technical perspective == | ||
A ground network file consists of 4 major sections. The first section is optional, although recent | A ground network file consists of 4 major sections. The first section is optional, although recent versions of TaxiDraw add this section automatically. This section contains a list of all the radio frequencies for the airport in question. FlightGear currently (as of 1.9.0) uses these frequencies to display some ATC messages. As of FlightGear 1.9.0, only startup approval requests are implemented. You can "hear" these by tuning to the first ground frequency listed in the frequencies section. | ||
The second section of the file contains the parameters of the airport's parking | The second section of the file contains the parameters of the airport's parking | ||