Stability of each mapgen

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paramat
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Stability of each mapgen

by paramat » Sun Dec 24, 2017 16:44

'Official stability' means we will not alter the terrain shape (that includes the structure of caves) unless it is unavoidable as part of a bugfix.
For non-mgv6 mapgens the biome system is separate and defined by MTGame, and is not stable, however changes are likely to be subtle and the worst that can happen is a few straight-edged biomes.

Mgv6 has been officially stable since 2012. Since mgv6 biomes are hardcoded into the engine the biomes are also stable.

Mgv7 terrain has been officially stable since 0.4.16 when it was made the default mapgen, however the optional floatlands (disabled by default) are not stable yet, maybe they will be for 0.5.0.

Mgsinglenode is obviously officially stable.

Mgv5, mgflat, mgfractal, mgvalleys and mgcarpathian terrains are not officially stable.
Last edited by paramat on Mon Apr 16, 2018 19:17, edited 1 time in total.
 

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Re: Stability of each mapgen

by Wuzzy » Tue Dec 26, 2017 21:40

Thank you, this is interesting information, but how is this news? ;-)

Information like this needs to be written down in README files, documentation, etc. instead of scattering it in the forums.
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Re: Stability of each mapgen

by paramat » Mon Apr 16, 2018 19:20

Updated to clarify that only 3 mapgens are officially stable.
 

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Re: Stability of each mapgen

by v-rob » Tue Apr 17, 2018 00:09

I find it funny how mgv5 was made in 2011 and it isn't considered stable. :)

Singlenode is stable?! *Gasp!* :P
 

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Re: Stability of each mapgen

by rubenwardy » Tue Apr 17, 2018 00:10

v-rob wrote:I find it funny how mgv5 was made in 2011 and it isn't considered stable. :)

Singlenode is stable?! *Gasp!* :P


The v5 we have now was made much later, around 2015 or 16 I forget. The original v5 was removed.
 

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Re: Stability of each mapgen

by v-rob » Tue Apr 17, 2018 00:21

Yes, but it still uses the same noises (with a few modifications, I believe)
 

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Re: Stability of each mapgen

by twoelk » Tue Apr 17, 2018 14:14

v-rob wrote:Yes, but it still uses the same noises (with a few modifications, I believe)

rather, total rewrite to achieve the same effect
 

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Re: Stability of each mapgen

by Wuzzy » Tue Apr 17, 2018 19:36

What exactly are the differences between the historical mapgen v5 from 0.3 and the current mapgen v5?

So far the only obvious difference I know of is usage of the biome API.
I believe the terrain shape is mostly the same. But is it identical?
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Re: Stability of each mapgen

by paramat » Fri May 04, 2018 00:28

For mgv5:
Terrain surface shape is identical or as close as it can be. The eased 3D noise new mgv5 uses may create a slightly different shape to the original 3D noise implementation.
The 3D noise tunnels are identical in shape.
Old mgv5 only had these tunnels and had random water and lava sources added underground. New mgv5 doesn't have these sources, instead it adds the 'large caves' from mgv6, which often contain water or lava, these were considered a better way to include underground liquids.
Also there is an option (default enabled) for the giant caverns deep underground.

Of course, the biomes, ores and decorations are completely different.
 


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