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PostPosted: Sun Jun 24, 2018 6:13 pm 
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Space Squid

Joined: Sat Nov 08, 2014 3:44 pm
Posts: 66
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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PostPosted: Sun Jun 24, 2018 6:31 pm 
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Vacuum Dragon
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Joined: Mon Apr 10, 2017 4:25 pm
Posts: 655
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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PostPosted: Sun Jun 24, 2018 8:36 pm 
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AI Lead, Programmer
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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.

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PostPosted: Mon Jun 25, 2018 12:10 am 
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Space Kraken

Joined: Tue May 16, 2017 3:42 am
Posts: 109
Location: Catalonia, France, Europe, Earth, Sol, Orion Arm, Milky Way, Virgo Cluster
Dilvish wrote:
The interactions are all specified here.

Thanks for the link, but there's something I don't understand here -
Code:
# 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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PostPosted: Mon Jun 25, 2018 2:57 am 
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AI Lead, Programmer
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Joined: Sat Sep 22, 2012 6:25 pm
Posts: 4683
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.

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