[Klonan] Resource generation ignores frequence values less than 0.17 but works at higher values

[fienxjox]

When attempting to generate a surface with very low ores, you can set the richness parameter in map_gen_settings.autoplace_controls to arbitrary low numbers (such as 0.001) and the game handles them correctly (making lower and lower richness patches until they evaporate), however attempting to alter frequency to a value less than 0.17 (but higher than "none") and the game ignores the value and seems to use a floor of 0.17.

Steps to reproduce - first generate a map (recommend no biters for this test) and expand out to some size to get a view, grab screenshot manually of the map. Use minimum frequency settings for resources

Code: Select all

/c game.speed = 10
/c game.forces.player.chart(game.player.surface, {{x = -2000, y = -2000}, {x = 2000, y = 2000}})

then we generate a new surface with what should be 5% values

Code: Select all

/c local map_gen_settings = game.surfaces["nauvis"].map_gen_settings
map_gen_settings.autoplace_controls["coal"] = {frequency=.05,size=1,richness=.05}
map_gen_settings.autoplace_controls["copper-ore"] = {frequency=.05,size=1,richness=.05}
map_gen_settings.autoplace_controls["iron-ore"] = {frequency=.05,size=1,richness=.05}
map_gen_settings.autoplace_controls["stone"] = {frequency=.05,size=1,richness=.05}
map_gen_settings.autoplace_controls["uranium-ore"] = {frequency=.05,size=1,richness=.05}
game.create_surface( "RePainter", map_gen_settings )
game.player.teleport({0, 0},"RePainter")

Grab another screenshot and compare, you get the same results.

Map exchange string used in my test

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DfAdGZhADpOoLUAzCgyRqiFEQWsABHNzMDAjwwZ5B+qaYCAAEq637<<
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Starting map with sliders at 17%, as low as they go for resources

17pct.PNG (994.69 KiB) Viewed 3327 times

New surface with settings changed to 5% - note the frequency does not change but richness does

5pct.PNG (990.16 KiB) Viewed 3327 times

To show this is inconsistent, the logic does work if you go higher than 17% - here's a 300% using exactly the same code which does work

300pct.PNG (1.05 MiB) Viewed 3327 times

[Klonan]

Thanks for the report,

Its fixed for the next release, some screenshots:

factorio-run_2021-03-07_19-43-59.png (261.39 KiB) Viewed 3266 times

factorio-run_2021-03-07_19-42-31.png (258.53 KiB) Viewed 3266 times

factorio-run_2021-03-07_19-41-44.png (257.78 KiB) Viewed 3266 times

factorio-run_2021-03-07_19-40-51.png (258.01 KiB) Viewed 3266 times

factorio-run_2021-03-07_19-39-55.png (260.15 KiB) Viewed 3266 times

[NotRexButCaesar]

Wasn’t this a “not a bug” only a month or two ago? Or am I just imagining things? I would have bet that there was some developer somewhere saying that you weren’t supposed to set the values lower than 17%.

[Klonan]

Unfortunately I have to keep this bugfix for another day,
I thought changing it would not affect older save games, but it turns out it does, I was mistaken when I thought the noise programs were saved in the save games,
So the fix would result if broken resource patches on the edge of the map, as well as changing resources on currently known seeds.

So, for now I will put this in minor issues

[fienxjox]

Any chance this could be considered for 1.2?

[quyxkh]

But map seeds are saved. Couldn't this have been (and couldn't it still be) fixed by marking map seeds and having the code use the old noise for the unmarked ones?

[Atraps003]

Will this be fixed in 2.0?