kOS/lib/navigation.ks

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// functions for calculating steering values.
@lazyglobal off.
function GetPitch {
parameter v is SHIP:FACING:FOREVECTOR.
return 90 - vectorangle(SHIP:UP:FOREVECTOR, v).
}
function CreateCircularizationNode {
parameter usePeriapsis is false.
local target is SHIP:ORBIT:APOAPSIS.
local t is SHIP:ORBIT:ETA:APOAPSIS.
if usePeriapsis {
set target to SHIP:ORBIT:PERIAPSIS.
set t to SHIP:ORBIT:ETA:PERIAPSIS.
}
local n is Node(t, 0, 0, 0).
// move fast until we pass our target.
until (usePeriapsis and n:ORBIT:APOAPSIS < target) or n:ORBIT:PERIAPSIS > target {
set n:PROGRADE to n:PROGRADE + 1.
}
// now bring it back in real slow until we come back.
until (usePeriapsis and n:ORBIT:APOAPSIS > target) or n:ORBIT:PERIAPSIS < target {
set n:PROGRADE to n:PROGRADE - 0.01.
}
return n.
}