Nasal scripting language

FlightGear offers a very powerful functional scripting language called Nasal, which supports reading and writing of internal FlightGear properties, accessing internal data via extension functions, creating GUI dialogs and much more. Please see the right navigation bar to get additional information.

# to be saved in [[$FG_ROOT]]/Nasal/hello.nas
  print( "Hello World!" );

Nasal scripting
What is Nasal? Success stories Nasal FAQ Features Nasal Snippets Nasal Style Guide Howto:Syntax highlighting for Nasal
Getting started
Nasal for C++ programmers The Nasal Console Creating new Nasal scripts Nasal Hello World Howto:Create a new Nasal module Using Nasal functions Nasal Variables Nasal Namespaces Namespace and Methods Nasal Namespaces in-depth Nasal Conditionals Nasal Loops Howto:Use vectors and foreach loops to write shorter code Howto:Start using vectors and hashes in Nasal Nasal library functions OOP Introduction Object Oriented Programming with Nasal Exception handling with Nasal Using listeners and signals with Nasal List of Nasal extension functions List of Nasal modules in $FG_ROOT Developing and debugging Nasal code Nasal Flightplan
Advanced Tutorials
Nasal Meta-Programming A GPX flight logger in Nasal Howto:Making HTTP Requests from Nasal Howto:Transmit properties over MP Howto:Terrain sampling in Nasal Howto:Create a new system in Nasal Howto:Load a Nasal file at runtime Howto:Control the route manager in Nasal Howto:Get a number of elevation offsets for a number of objects Howto:Nasal in scenery object XML files Howto:Create animation XML files from Nasal Howto:Port I/O from Nasal Howto:Continuation-passing style programming in Nasal Howto:Start worker threads using listeners in Nasal Howto:Developing a DSL interpreter in Nasal

Nasal Internals:
Howto: Extend Nasal Improving Nasal How the Nasal GC works How to add a new binary operator to Nasal Currently Work in Progress: How the Nasal VM works How the Nasal Code Generator works How the Nasal Parser works How the Nasal Subsystem works

References