Property browser: Difference between revisions

The [[FlightGear]] '''property browser''' is a dialog used to browse, in-simulator, through all properties (internal, runtime state variables in FlightGear). The property browser cannot only be used to inspect all sorts of internal variables at runtime, but it can also be used to change most variables easily. However, some properties are so called "tied" properties which are directly mapped to internal C++ variables, so that they cannot be modified otherwise.  

In addition, even some non-tied properties cannot be modified because they are by default constantly written/modified by another subsystem (in C++/Nasal space), possibly updating properties at frame rate, this applies for example to the frame rate counter, which is constantly updated by C++ code - so trying to set it from Nasal would be kind of pointless.

Certain properties are only read/applied during initialization/re-initialization (startup/reset) of the sim, while others require the corresponding subsystems to be reinitialized.

The property browser can be opened with / (forward slash) or through the [[menubar|menu]]: <tt>Debug > Browse Internal Properties</tt> (in older version: <tt>File > Browse Internal Properties</tt>).

Next, pop open the property browser in a live running copy of FlightGear.  Browse around to see the different data fields that are available. Just about everything interesting/useful is published in the property system. The browser allows you to inspect and even change values in the live running copy of FG.