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Runway Awareness and Advisory System: Difference between revisions
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Runway Awareness and Advisory System (view source)
Revision as of 09:30, 28 September 2014
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https://www.youtube.com/watch?feature=player_detailpage&v=0jkRhIMZAZo#t=171 | https://www.youtube.com/watch?feature=player_detailpage&v=0jkRhIMZAZo#t=171 | ||
== Aircraft == | |||
Currently RAAS is only used in the [https://github.com/dogsaysmoo/747-8i/ 747-8i]. | |||
{{tip|Complain to the developer of your favorite aircraft if you want it to support RAAS.}} | |||
== TODO == | == TODO == | ||
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</syntaxhighlight> | </syntaxhighlight> | ||
Add the file runway.nas to your aircraft's Nasal folder. The following example listens | Add the file runway.nas to your aircraft's Nasal folder. The following example listens to /gear/on-ground and overrides a number of properties of the takeoff_config object so that it can be used for large airliners. | ||
=== Functions === | |||
First, create a number of functions to format and print messages, and to execute certain actions when some signals are emitted: | |||
<syntaxhighlight lang="nasal"> | <syntaxhighlight lang="nasal"> | ||
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}; | }; | ||
</syntaxhighlight> | </syntaxhighlight> | ||
=== Connecting signals === | |||
Second, create configuration objects, override some of their parameters, and then connect the various functions to callbacks: | |||
<syntaxhighlight lang="nasal"> | <syntaxhighlight lang="nasal"> | ||
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landing_announcer.connect("landed-outside-runway", runway.make_betty_cb(nil, nil, stop_announcer)); | landing_announcer.connect("landed-outside-runway", runway.make_betty_cb(nil, nil, stop_announcer)); | ||
</syntaxhighlight> | </syntaxhighlight> | ||
=== Listeners === | |||
Finally, set up a listener to detect when the aircraft is on the ground and when it is airborne. Depending on this conditions, you need to start, stop, or change the modes of the announcers: | |||
<syntaxhighlight lang="nasal"> | <syntaxhighlight lang="nasal"> | ||
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{{tip|You might want to replace copilot_say().}} | {{tip|You might want to replace copilot_say().}} | ||
== Configuring the announcers == | |||
The configuration object takeoff_config has a number of properties with default values. These properties can be modified if you want to change when certain signals are emitted. For example, in the example of runway.nas above, distance_center_line_m and distance_edge_max_m where overridden for large airliners. The defaults are: | The configuration object takeoff_config has a number of properties with default values. These properties can be modified if you want to change when certain signals are emitted. For example, in the example of runway.nas above, distance_center_line_m and distance_edge_max_m where overridden for large airliners. The defaults are: | ||