Galaxy age affects planet types?

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Magnate
Space Squid
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Joined: Sat Nov 08, 2014 3:44 pm

Galaxy age affects planet types?

#1 Post by Magnate » Sun Jun 24, 2018 6:13 pm

Apologies if this has been asked before, but do the galaxy age settings affect anything other than star types? Do you get, for example, more gas giants in young galaxies and more asteroid belts in ancient ones?

I am contemplating my first game as the Sly ...

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Oberlus
Small Juggernaut
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Re: Galaxy age affects planet types?

#2 Post by Oberlus » Sun Jun 24, 2018 6:31 pm

IIRC, it affects the star types:
youger galaxy<- blue, white, yellow, orange, red, neutron, black ->older galaxy.
And the number of nebulas:
younger galaxy<- more nebulas in empty systems, more non-empty systems ->older galaxy
Note that you'll get roughly the same number of non-empty systems in late game, once all nebulas have become planetary systems.

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Dilvish
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Re: Galaxy age affects planet types?

#3 Post by Dilvish » Sun Jun 24, 2018 8:36 pm

And since star types can affect planet size, galaxy age can indirectly affect frequency of asteroids and gas giants

The interactions are all specified here.
If I provided any code, scripts or other content here, it's released under GPL 2.0 and CC-BY-SA 3.0

Jaumito
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Location: Catalonia, France, Europe, Earth, Sol, Orion Arm, Milky Way, Virgo Cluster

Re: Galaxy age affects planet types?

#4 Post by Jaumito » Mon Jun 25, 2018 12:10 am

Dilvish wrote:The interactions are all specified here.
Thanks for the link, but there's something I don't understand here -

Code: Select all

# Note: A positive value for none, will mean a chance of empty systems
# of that type in game.  All star types with a zero or less chance for
# none will be forced to have at least one satellite.
STAR_TYPE_MOD_TO_PLANET_SIZE_DIST = {
#                           none  tiny  small  medium  large  huge  asteroids  gas giant
    fo.starType.blue:      (  0,    0,     0,      0,    -5,  -10,         0,         0),
    fo.starType.white:     (  0,    0,     0,      0,    -5,  -10,         0,         0),
    fo.starType.yellow:    (  0,    0,     0,      0,    -5,  -10,         0,         0),
    fo.starType.orange:    (  0,    0,     0,      0,    -5,  -10,         0,         0),
    fo.starType.red:       (  0,    0,     0,      0,    -5,  -10,         0,         0),
    fo.starType.neutron:   (  5,    0,     0,      0,    -5,  -10,        20,         0),
    fo.starType.blackHole: ( 30,    0,     0,     -5,   -10,  -15,        10,        -5),
    fo.starType.noStar:    ( 80,    0,     0,      0,   -10,  -15,         0,        10),
}
Yet, I still find stars in the [blue..red] range with zero satellites. Why?

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Dilvish
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Re: Galaxy age affects planet types?

#5 Post by Dilvish » Mon Jun 25, 2018 2:57 am

Jaumito wrote:Yet, I still find stars in the [blue..red] range with zero satellites. Why?
That comment is a bit incomplete. Note that the name of that structure begins with STAR_TYPE_ MOD ... It is a mod that gets combined with contributions from the other applicable tables, which for planet existence you can see here and for planet size see here.
If I provided any code, scripts or other content here, it's released under GPL 2.0 and CC-BY-SA 3.0

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