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Weather: Difference between revisions
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Update auto-starting advanced weather for modern FlightGear using the qt-launcher. Cleanup.
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m (Update auto-starting advanced weather for modern FlightGear using the qt-launcher. Cleanup.) |
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More quirks: | More quirks: | ||
* The weather scenarios that describe the {{Wikipedia|air mass|airmasses}} around your starting position, like reading a {{Wikipedia|Weather map|weather map}} around a position | * The ''actual weather simulation'' is the weather scenarios that describe the {{Wikipedia|air mass|airmasses}} around your starting position, like reading a {{Wikipedia|Weather map|weather map}} around a position. These are what people intuitively expect coming into a simulation, and what should be normally used.The weather changes as you move, or with time. Weather simulations are driven by terrain shape and surface materials, as well as other things like sunlight. Enable ''Weather > Advanced settings > Terrain presampling'' and ''terrain effects'' (may cause slowdown in extremely old CPUs). The results of each scenario depend on the terrain around you. Simulated scenarios: core high pressure region (fair weather), high pressure region, border of a high pressure region, border of a low pressure region, low pressure region, and warm sector. You can tell which ones these are as ''Weather > Advanced settings > Tile selection'' is automatically set to ''realistic weather''. | ||
* "''Live data''" (live METAR) is not a simulation. No live weather service is - at any location you get weather belonging to one time of day, one day, one season, one long-term weather pattern like drought. Simulate another time of day, and it's wrong. Rare weather is unlikely when you fly. METAR data is also lacking and imperfect. | * "''Live data''" (live METAR) is not a simulation. No live weather service is - at any location you get weather belonging to one time of day, one day, one season, one long-term weather pattern like drought. Simulate another time of day, and it's wrong. Rare weather is unlikely when you fly. METAR data is also lacking and imperfect. | ||
* You can press "''Apply''" to get a new set of values for randomised properties. Atmosphere state is very complex. There are many different possibilities for scenarios that describe airmasses around you. There are way more properties than is presented in the UI, or can be presented without people accidentally making physically impossible combinations. These properties are randomised at each time AW starts. | * You can press "''Apply''" to get a new set of values for randomised properties. Atmosphere state is very complex. There are many different possibilities for scenarios that describe airmasses around you. There are way more properties than is presented in the UI, or can be presented without people accidentally making physically impossible combinations. These properties are randomised at each time AW starts. | ||
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=== Autostarting Advanced Weather === | === Autostarting Advanced Weather === | ||
In modern FlightGear Advanced Weather can be specified at start up [[FlightGear Qt launcher]] > Settings > Environment > Advanced Weather Modelling. You may also select a start up scenario, but as of 2020.3.11 LTS, you need to use the in-sim menu for other options (Nov 2021). See [[command line options]] if you are starting from the command-line - a list of options set by the launcher is available. | |||
In older era FlightGear: use <tt>--prop:/local-weather/autostart=1</tt> and then check the property in the Nasal init code using <tt>getprop("/local-weather/autostart")</tt>, if it's true, invoke the same routines as the dialog's ok/apply buttons (see the corresponding bindings), and you'll end up with a fully optional autostart-feature. To retain the setting, set the <tt>userarchive</tt> attribute to true. Yes, it's not straightforward. | |||
=== More on Advanced Weather === | === More on Advanced Weather === | ||