mojira.dev
MC-48907

Blazes don't naturally swim upwards in water or lava

The bug

When not aggravated, blazes will sink to the bottom of water or lava instead of floating at the surface like most non-undead mobs. They are still able to fly upwards if hostile.

To reproduce

Spawn a blaze in water or lava while in Creative mode.

Code analysis

This appears to be because blazes don't add a FloatGoal in net.minecraft.world.entity.monster.Blaze.registerGoals(), unlike most non-undead mobs.

Linked issues

Attachments

Comments

Paul Smith

I tested this, it's true...

kumasasa

Confirmed.

Zakery Corbett

same applies to water. Blazes in the new snapshots will kill themselves in water because they don't try to get out of it.

kumasasa

This ticket has been marked as a duplicate of MC-49937, in favor of the more general or better information provided.

kumasasa

Reopening this ticket and separating from MC-49937 because the issue is still existing.

Kahless

Copying over this info since it seems useful:

Blazes used to float in water and lava in 1.7.10 and 14w05b, and no longer do in 1.8 as of 14w06b.

For reference, 14w06a is when all mobs got the new AI.

Tamás Márkus

Still confirmed in 1.8-pre3 with screenshot attached.

thilo77

still present in 1.8 release

Noproct

confirmed for 1.8

Daniel Bla

Is there a fix planed for 1.8.1?

Dlawso the Really Lucky Rabbit

If it was fixed for 1.8.1, this would've been resolved already.

Daniel Bla

Thats why i wrote "Planed". There is no Date yet for the release, thats why i have still the hope that mojang will fix that annoying bug.

EDIT//

Okay, it seems there will no fix for that. Too bad. But at least the sprint key is now in the right category, what a gamebreaking bug...

Sonicwave

Confirmed for 1.8.1-pre1.
Also the title could be changed to Blaze not swimming in water or lava since this happens in water too.

Kahless

Yup, they used to be able to swim in water in 1.7.
This might have something to do with their new AI, since they started doing social aggro (like zombie pigmen) in 1.8.

Ebidz

This is really annoying, built a double blaze grinder and when im about to test it, i figure out this bug exists...

Tamás Márkus

I can relate.

Sonicwave

Confirmed in 1.8.1.

Noproct

I confirm for 1.8.2 pre6

Noproct

Maybe useful info: Blazes are slowed down by lava when falling (they do not fall through lava like through air).

Isaac Shih

Still doesnt work in 1.8.8

Noproct

This is still an issue in 15w47c.

Noproct

This is still an issue in 15w50a.

Noproct

This is still an issue in 15w51b.

Noproct

Guess what. Still not fixed in 16w05b.

Tom Snoei

Still not fixed in 1.9. Dual Blaze farm still useless 😞

Tom Snoei

This is still not fixed in 1.9.4

Tom Snoei

Still an issue in 1.10.2

Sonicwave

Confirmed for 17w13a.

Sonicwave

Confirmed in 1.12.2 and 17w45a. This appears to be because the initEntityAI() method does not call this.tasks.addTask(1, new EntityAISwimming(this)); (unlike most mobs), which removes the "swimming in liquids" behavior.

Sonicwave

Confirmed for 18w05a.

Jennie Ivins

Can confirm for 18w14b.

Other mobs affected: bats, phantoms, and ghasts. They don't seem to know that they need to be above water to not die. Zombies don't swim up either, but I think that's related to the Drowned mob not this.

Jennie Ivins

Can confirm for 18w22a.

Non-undead mobs that won't swim up but should:

bats
blazes

Undead mobs that do swim up but shouldn't:

zombie horse (MC-129262)

Jennie Ivins

Can confirm for 18w45a.

Non-undead mobs that won't swim up but should:

Bats
Blazes
Endermites
Ghasts (can't actually tell if they are trying to swim up, or just flying around randomly)

Silverfish will swim to surface, but don't actually surface so they drown anyway. (MC-134755)

Avoma

Can confirm in 20w48a.

Avoma

Can confirm in 20w51a.

Avoma

Can confirm in 21w03a.

Avoma

Can confirm in 21w05b.

Avoma

Can confirm in 21w06a.

Avoma

Can confirm in 21w07a. Video attached.

Avoma

Can confirm in 21w11a.

Avoma

Can confirm in 21w14a.

Avoma

Can confirm in 21w17a.

Avoma

Can confirm in 1.17.

Avoma

Can confirm in 1.17.1.

Avoma

Can confirm in 1.18.1.

Avoma

Can confirm in 1.18.2 and 22w11a.

Avoma

Can confirm in 1.19.

Avoma

Can confirm in 1.19.2.

himazinn_Japan

Can confirm in 1.21.4.

Bernardo nouel

Sonicwave

(Unassigned)

Confirmed

Gameplay

Normal

Mob behaviour

Minecraft 14w08a, Minecraft 1.8-pre2, Minecraft 1.8-pre3, Minecraft 1.8, Minecraft 1.8.1-pre1, ..., 1.19.2, 1.20.1, 1.20.2, 1.20.4, 1.21

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