Name: 'The kOS Extension'
Author: 'quasy'

Made by Quasy — A modern, fully up-to-date VS Code language extension for kOS (Kerbal Operating System), the in-game scripting mod for Kerbal Space Program.

Features

Syntax Highlighting — Full coverage of all KerboScript keywords, operators, built-in variables, structures, functions, and constants
Language Configuration — Auto-closing brackets and quotes, correct comment toggling with Ctrl+/, smart indentation
Snippets — 35+ ready-to-use code snippets for common patterns

Snippet List

Prefix	Description
`lazyglobal`	`@lazyglobal off.` pragma
`set`	Set a variable
`lock`	Lock to an expression
`local` / `global`	Variable declarations
`function` / `func`	Function definition
`if` / `ifelse`	Conditionals
`until`	Until loop
`from`	From-step-do loop (for loop)
`for`	For-each over a list
`when` / `whenp`	When/Then triggers (one-shot and repeating)
`on`	On-change trigger
`wait` / `waituntil`	Wait commands
`print` / `printat`	Terminal output
`cls`	Clear screen
`log`	Log to file
`stage`	Activate next stage
`throttle`	Lock throttle
`steering` / `steerheading`	Lock steering
`unsteer`	Unlock steering
`waitstage`	Stage when ready
`execnode`	Execute next maneuver node
`ascent`	Basic gravity-turn ascent template
`pid`	PID controller setup
`vec`	Vector constructor
`latlng`	Geographic coordinates
`node` / `addnode`	Maneuver nodes
`list`	List with add
`lex`	Lexicon (dictionary)
`hud`	HUD text overlay
`vecdraw`	Draw a 3D vector arrow
`run`	Run another script
`orbitinfo`	Print orbit data
`visviva`	Vis-viva delta-V calculation
`const`	kOS physics constant
`runonce`	Run-once module guard

Language Support

What's highlighted

Keywords — set, lock, if, until, function, parameter, declare, local, global, etc.
Control flow — if, else, until, from/step/do, for/in, when/then, on, wait, return, break
Built-ins — ship, target, body, time, altitude, apoapsis, periapsis, throttle, steering, etc.
Direction constants — prograde, retrograde, radialin, radialout, normal, antinormal, up, north
Math functions — abs, sqrt, sin, cos, tan, arctan2, round, floor, ceiling, ln, log10, max, min, mod, random
Constructors — V(), R(), Q(), HEADING(), LATLNG(), NODE(), LIST(), LEXICON(), QUEUE(), STACK(), RANGE()
Operators — and, or, not, mod, =, <>, <=, >=, ^
Delegate syntax — funcname@
Suffix access — highlighting after : (e.g. ship:velocity:orbit:mag)
Numbers — integers, floats, scientific notation
Strings — double-quoted, with escape sequences
Comments — // line comments
Pragma — @lazyglobal off.