mojira.dev
MC-214963

Mineshaft generation is non-deterministic

Occasionally, mineshafts are cut off at chunk borders. However, this can not be consistently reproduced; sometimes the generated parts don't generate at all.

To reproduce

Example 1

Seed: -5237585497757630354

Coordinates: 907 6 681
This one block wide part of the mineshaft will sometimes generate, and sometimes it won't.

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Example 2

Seed: -7729344434077138248

Coordinates: 217 -50 -471
This spawner will sometimes generate, and sometimes it won't.

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Coordinates: 196 -51 -468
This part of the mineshaft will sometimes generate, and sometimes it won't.

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(more examples, see screenshots)

Linked issues

Attachments

Comments

KingSheepMC
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Can confirm

violine1101

Can confirm. However the mineshaft parts sometimes generate differently compared to the screenshots or not at all. That's part of a bigger problem, and probably also the cause of this issue: mineshaft parts are generated non-deterministicly.

Cultist_O

As generation has changed dramatically since this report, I'm not confident in my ability to test for it in newer versions. It may or may not have been fixed.

Brevort

This was an issue before 21w06a. I found a glitched mineshaft in chunks generated in 21w05b as well as 21w15a. So this is not an issue in the increased world height only.

muzikbike

I am not sure if this is an example of this bug. If it is, however, consider it confirmed for 21w40a.

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Avoma

I can confirm that this issue is still present in 21w44a. Here is some information as to where you can go about seeing this problem.

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Version: 21w44a
Seed: -7123216856550990646
Coordinates: /execute in minecraft:overworld run tp @s -201843.85 -0.78 394.97 -136.04 40.13
Moesh

Split this bug into two bugs, this part is fixed.

MC-241651

Cultist_O

(Unassigned)

Confirmed

Important

Structures, World generation

mineshaft, mojang_internal_2

21w06a, 21w13a, 21w44a

1.18 Pre-release 1

Retrieved