50 lines
1.8 KiB
Plaintext
50 lines
1.8 KiB
Plaintext
@LAZYGLOBAL OFF.
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run once "lib/orbital_equations".
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run once "lib/node".
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function change_orbit {
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//
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// Change current orbit. Set parameter to -1 to maintain the current value (TODO: all of this)
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//
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parameter inclination is ORBIT:inclination. // vertical tilt of the orbit with respect to the equator
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parameter eccentricity is ORBIT:eccentricity. // how circular the orbit is (e=0 circular)
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parameter periapsis is ORBIT:periapsis. // lowest point in the orbit
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parameter lan is 0. // longitude of ascending node; the longitude where the orbit crosses the equator northwards
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parameter argument_of_periapsis is ORBIT:argumentofperiapsis. // the angle from the ascending node to the periapsis, measured in the direction of motion
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print inclination.
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print eccentricity.
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print periapsis.
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print lan.
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print argument_of_periapsis.
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}
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function circularize {
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//
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// Circularize orbit at the given target.
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//
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parameter target.
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parameter eta. // eta to target
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local node is NODE(TIME:SECONDS + eta, 0, 0, 0).
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// Prograde burn magnitude is the difference between the required velocity to achieve circular orbit at target's altitude and our actual velocity at the target
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local required_velocity is orbital_velocity_circular(target).
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set node:prograde to required_velocity - velocityat(SHIP, TIME:seconds + eta):orbit:mag.
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add node.
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execute_burn(node).
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}
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function circularize_at_apoapsis {
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print "Circularizing at apoapsis".
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return circularize(APOAPSIS, ETA:APOAPSIS).
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}
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function circularize_at_periapsis {
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print "Circularizing at periapsis".
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return circularize(PERIAPSIS, ETA:PERIAPSIS).
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}
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