mojira.dev
MC-140755

Fish have poor collision detection, causes "crowding"

Resolved
Works As Intended
17

I've made an aquarium and a couple ornamental ponds, and I've noticed that sooner or later, schools of fish get stuck near a wall. It seems that one fish fails to notice that it's pressed up against a solid block, and all the fish schooling with it just follow suit. Pufferfish are less prone to it since they don't school, but I've noticed one of them doing it at least once. Other aquatic mobs appear to be unaffected.

Linked issues

is duplicated by 1

Attachments

2018-12-08_04.41.23.png image-2023-07-17-22-54-02-498.png

Comments 16

I've noticed a similar problem. I made an open ocean aquarium with iron bars and we eventually all the fish are pressed against the bars, refusing to be dissuaded from their desired course. 

Can confirm for 20w11a, may be the same bug as MC-148996

In 20w12a

In 1.16 Pre 3

Can confirm in 20w51a.

6 more comments

Can this still be reproduced in 1.19.2?

I'm still experiencing the same issue in 1.19.3 JE.

I am seeing this issue in 1.19.4 Java

happens in 1.20.1 Java, please fix

I'm also having this issue in 1.20.1 Java

They all flock and stay in the corners of the pool

[media]

It's only the tropical fish who do this, the Cod fish I have swims around normally

Harmony Wood

(Unassigned)

Community Consensus

Mob behaviour

Minecraft 1.13.2, Minecraft 18w49a, Minecraft 1.14 Pre-Release 5, Minecraft 1.14.2, 1.14.4, ..., 1.17, 1.18.1, 1.19.3, 1.19.4, 1.20.1

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