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Howto:Write simple scripts in Nasal: Difference between revisions
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Robot: Cosmetic changes
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Such a script should ideally be very generic so that it can be reused easily; but the script here is deliberately kept as simple as possible. | Such a script should ideally be very generic so that it can be reused easily; but the script here is deliberately kept as simple as possible. | ||
===Creating the nasal file=== | === Creating the nasal file === | ||
As with many other things in FG, nasal functions can live in many different places. Here, however, we're going to create a "Systems" directory under the Main fokker50 directory. Later, other files might be added to this directory; an electrical system, functions to control other cockpit indicators, etc. | As with many other things in FG, nasal functions can live in many different places. Here, however, we're going to create a "Systems" directory under the Main fokker50 directory. Later, other files might be added to this directory; an electrical system, functions to control other cockpit indicators, etc. | ||
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<pre>}</pre> | <pre>}</pre> | ||
===Including the nasal file in the -set file=== | === Including the nasal file in the -set file === | ||
To make sure our aircraft "knows" about this nasal file, we will need to add a section to the main aircraft -set.xml (in this case, fokker50-set.xml of course). | To make sure our aircraft "knows" about this nasal file, we will need to add a section to the main aircraft -set.xml (in this case, fokker50-set.xml of course). | ||
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<pre>fokker50.convertTemp();</pre> and press execute. (The "fokker50" part comes from the entry we made in the -set xml file) | <pre>fokker50.convertTemp();</pre> and press execute. (The "fokker50" part comes from the entry we made in the -set xml file) | ||
[[ | [[File:nasal_console.jpg]] | ||
You can see in the property browser (file/browse internal properties) that we now have a new egt property for the first engine (/engines/engine), with the value in degC - success! | You can see in the property browser (file/browse internal properties) that we now have a new egt property for the first engine (/engines/engine), with the value in degC - success! | ||
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This listens for the fdm-initialized property to be set (this will happen when the sim has started up), and starts our convertTemp function when that happens. | This listens for the fdm-initialized property to be set (this will happen when the sim has started up), and starts our convertTemp function when that happens. | ||
===Finishing up=== | === Finishing up === | ||
As an "exercise for the reader" (I always hate those!) you should make the script also convert the temperature values for the second engine. | As an "exercise for the reader" (I always hate those!) you should make the script also convert the temperature values for the second engine. | ||