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"Orbits" places planets on concentric and coplanar orbits around the
sun.

== Overview ==
"Orbits" places planets on concentric and coplanar orbits around the
sun. It works as stand-alone OXP or in combination with other OXPs
which add planets to a system. I use it together with [[Far Sun OXP]] and
[[System Redux (Oolite)]]. Note, the installation order of your OXPs may be
relevant. If you have trouble to get it right you may want to let
Orbits emulate Farsun as well.

The OXP derives the layout of a planet system from the system
name. Therefore when you return to a system again the same number of
planets and the same orbits will be there. However, since "Orbits"
checks the game clock the planets will have move along their orbits a
little bit. (Hmm, I use a coordinate system which depends on the
positions of the sun, the main planet, and the witchpoint buoy and in
the previous sentence I assumed that those positions are
static. Nothing to worry about, we will not notice the difference
anyway, just don't ask the guys in the astro labs!

== Recommended OXPs ==
*to place stations on the planets (as secondary GalCop stations):
:[[Stations for Extra Planets]]
:[[Market Inquirer]]

*to place planet/moon names in the compass:
:[[Planetary Compass OXP]]

*for "traffic" on the planet's space lanes:
:[[DeepSpacePirates]]

=== See also ===
*Rescale of the sun-planet distance:
:[[Distant Suns]]
:[[Distant Stars OXP]]

*Rescale the Oolite System:
:[[Rescaling_experiment]] (work in progress)

== Notes and references ==
*https://en.wikipedia.org/wiki/Solar_System
*https://en.wikipedia.org/wiki/Apsis
*https://en.wikipedia.org/wiki/Interplanetary_medium

*https://en.wikipedia.org/wiki/Orbit
*https://en.wikipedia.org/wiki/Kepler_orbit
*https://en.wikipedia.org/wiki/Orbit_modeling

*https://theskylive.com/3dsolarsystem
*http://www.fourmilab.ch/cgi-bin/Solar
*https://in-the-sky.org/solarsystem.php

*Version: 1.2.1 - 01 Jul 2010
:Update of v1.2 for Oolite v1.74.x

== Readme notes included with Orbits v1.2 ==
*Author: Ebi
*Created on: 11 Jul 08
*version: 1.1

== The Dark Side ==
In the config folder you will find the file "script.js". It defines
some variables which determine the layout. You may want to play with
them:

this.MaxPlanets = 7;

"Orbits" can add planets to a system. I've defined seven planets in
the planetinfo.plist (see the Config directory). So the maximum value
is currently 7. If you want even more just extend
planetinfo.plist. Those planets are not textured, in combination with
System Redux you can reduce the maximum.

:this.Yr = 300;

"Orbits" calculates the distances between the sun and the planets by
scaling the vector [sun, planet]. It first calulates the orbital
periods and then by applying Kepler's law that scalar. The orbital
period is expressed as multiple of the days per year of the main
planet. This value is also use to add some pseudo randomness.
Increasing its value will give larger orbits, I guess.

:this.X0
:this.X1
:this.Y0
:this.Y1

The radius of a planet determines the distances to its neighbours. It
works like a charge which pushes bigger planets away. The idea is that
a big planet has attracted the bodies in its vicinity and no bodies
are left there. At startup "Orbits" assigns the "mass" Y1 to the
biggest and Y0 to the smallest planet and interpolates the other
values. You can overwrite the min/max radii by defining X0 and/or
X1. The resulting numbers are factors in the product used to calculate
the orbital periods. Bigger numbers produce biggers gaps.

:this.SpreadFactor = 3;

Adds space between the orbits in sparse system. "Orbits" multiplies
the orbital periods by SpreadFactor ^ (1 / (#planets - 1))

:this.RandomOffsetFactor = 0.1

Let t[i] be the orbital period of planet i. Then "Orbits" gets t[i+1]'
by multiplying Yr with the weights explained above and adding the
result to t[i]. After that it adds a pseudo random number in the range
[0, t[i+1]' * RandomOffsetFactor] to get the final t[i+1].

:this.FarsunMultiplier

The initialization order of OXPs seems unpredictable to me. If you are
using Farsun.OXP and you have the feeling the planets are too close to
the main planet or they are not orbiting around the sun then the
installation order is probably wrong. "Orbits" can emulate Farsun. If
nothing works set FarsunMultiplier to an appropriate value. Set it to
1 if you don't want a far sun. I'm using 6.

== Download ==
Orbits is ''not'' on the in-game [[Expansions Manager]]! There is no OXZ!

*[https://app.box.com/s/0xbwnuqpxunh8uvtppnv40mjnecdlkpz Orbits.oxp v1.6.0]
Download the zipped OXP, unzip it and place in your AddOns folder. Restart Oolite with the shift key held down until you see the spinning Cobra. If there are problems with any of this, see [[OXP]].

There are several other versions of OXPs in Rustem's Box which are designed to complement Orbits:
*Pop Tweaks for Orbits
*Oolite saves for test orb period
*SunKyota for Orbits
*Additional Planets SR tweaked for Orbits
*MicroGTorus
*PlanetaryCompass v.1.02
:Also Orbits versions 1.2.1, 1.3, 1.4 & 1.5

== License ==
No license visible, but Rustem ''did'' make this available to everybody through his Box account.
:Ebi (27/12/2009): "I have already prepared Orbits for the trunk version. This license stuff irritates me and therefore I haven't published Orbits yet"
*Authors (historic): Ebi and then Kaks
*Author (current): [[User:Rustem|Rustem]]

== Links ==
*[https://app.box.com/s/0xbwnuqpxunh8uvtppnv40mjnecdlkpz Download]
*[http://aegidian.org/bb/viewtopic.php?f=4&t=8216 (UPDATE) Orbits for 1.74.1] (2010-18)
*[http://www.aegidian.org/bb/viewtopic.php?f=4&t=7259 Orbits] (2009)
*[http://www.aegidian.org/bb/viewtopic.php?f=4&t=5622 Orbits.OXP - Sun and Lightsource Don't Line Up] (2009)
*[http://www.aegidian.org/bb/viewtopic.php?p=55053#p55053 Ebi's creation of Orbits] (2008)
*[[Planetary Systems]] - Stranger's version of this, part of his [[Strangers World]] suite of OXPs

== Gameplay and Balance Indicator ==
[[File:Tag-colour-green.png|right]]
Ambience OXPs tend not to change the difficulty ratings.

{{ambience-OXP}}{{mechanics-OXP}}

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@@ Line 138: / Line 138: @@
 No license visible, but Rustem ''did'' make this available to everybody through his Box account.
 :Ebi (27/12/2009): "I have already prepared Orbits for the trunk version. This license stuff irritates me and therefore I haven't published Orbits yet"
-*Authors (historic): Ebi and then Kaks
+*Authors (historic): Ebi and then [[User:Kaks‎|Kaks‎]]
 *Author (current): [[User:Rustem|Rustem]]

@@ Line 125: / Line 125: @@
 There are several other versions of OXPs in Rustem's Box which are designed to complement Orbits:
 *Oolite saves for test orb period
-*Additional Planets SR tweaked for Orbits
+*[[Additional Planets]] SR tweaked for Orbits
-*MicroGTorus
+*MicroGTorus - by Norby - 4 super-fast Torus drives for micro-gravitic conditions far from the sun (other goodies in there too)
-*PlanetaryCompass v.1.02
+*[[Planetary Compass OXP|Planetary Compass]] v.1.02 - by Thargoid
 :Also Orbits versions 1.2.1, 1.3, 1.4 & 1.5

Orbits - Revision history

Cholmondely: /* License */ Link!

Cholmondely: Added picture!

Cholmondely: /* Download */ Put in detail of Rustem's Boxed goodies

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