mojira.dev
MC-1669

Possible to walk through two perpendicular anvils at the corner where they meet.

Only tested in SMP.

What I expected to happen was...:
Running against an anvil (actually to jump on it 😃)

What actually happened was...:
I was pushed back and forward while running forward.

Steps to Reproduce:
1. Place an anvil (in front of a wall)
2. run against it.
3. Be pushed back. (Looks laggy and a bit like suffocating in the anvil).

Explanation of the bug in this video: http://www.youtube.com/watch?v=y1kon5Wax8I&feature=youtu.be

Related issues

MC-1888 When walking into a anvil character or screen spazing out MC-2263 Anvil: Cannot strafe along the front or run diagonally against MC-2560 Walking though anvils MC-2890 Walking into anvil MC-3978 Anvil - hitbox/collision problem MC-4850 Anvil on half slab MC-4898 Glitchy Anvil hitbox MC-5257 Anvil MC-7281 Hitbox of an anvil is different between the server and the client MC-7468 Anvil colision bug while flying/falling MC-7629 Hitboxes of blocks with orientation dependend placement are broken. MC-10076 Walking around anvil edges MC-17386 Anvil bug: When you go to close to anvil, it's kinda sticks u to it. MC-25541 Able to walk through non-parallel anvils! MC-26000 Walk through anvil MC-30924 anvil collision box error MC-36424 Anvils/chest(any non-block entity) collision server-check bugs(Netty?) MC-47359 Anvil clipping bug MC-55327 Players and mobs can clip through anvils by "rubbing" against them MC-58498 Anvils are glitchy MC-66595 Anvils are glitchy MC-70934 Walking between two anvils causes you to get inside of them. MC-72226 Possible to walk IN anvils MC-72495 Anvil Door MC-79300 Walking through anvils

Attachments

Comments

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Tested in Multiplayer there (1.4.3 pre-release)

Bug comfirmed : collision bug when running into the anvil (little knockback)
collision bug when : force walking into the anvil, then moving left or right -> being stuck with a spazzing knock back until we stop moving in that direction

Solo mode : seems to have no bug with collision.

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Same thing happens for me on my Linux server with an OSX and Windows client. (1.4.3 Pre-release)

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This will also happen in 1.4.4 pre-release.
Comfirmed.

kumasasa

Confirmed in Multiplayer, not happening in Singleplayer

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I have seen this bug when walking into any non-solid block. Fences and doors can do the same thing.

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I also have this problem, you'll start vibrate when walking into the long sides of them. So you can't pass by it walking against the long sides of them.

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Confirmed in snapshot: 13w07a Multi-player.

shufboyardee

1.5 as well.

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I believe I have found a serious issue related to this bug. A quick search through the issue tracker revealed my worst fears: Anvils can be decorporealized at will. I have uploaded a series of four images describing the process.

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Confirmed in 1.5 release and snapshot 13w11a.

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Confirmed in 1.5.1 tough

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Confirmed in 1.5.1, just tried it out on my flat world.

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I think this is caused by unsynced width of anvil block in singleplayer and server files. Thus, playing in SP is ok, but server thinks that anvil is wider than client knows, pushing player back when updating his position. So the fix would probably be changing anvil's hitbox in server files.

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This needs to be updated for 1.6.2 as it is still an issue.

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Anvil and chest have exactly same hitbox bug.
Confirmed in 1.6.2 both with anvil and a chest.

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Still happens in 1.7.2. Just make a simple cube hitbox like the old fence had.

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Verified still happens on 1.7.4.

shufboyardee

does this still happen in SMP in the 1.8 snapshots?

kumasasa

in 14w08a the push back effect is gone, but can still walk through anvils as shown in the screenshots, but that's maybe another issue.

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The four screenshots I originally posted are invalid. The real cause is looking at an anvil facing the other direction, not turning. The hitboxes of all anvils is set to the last one you looked at. The same thing happens with double chests, but the difference isn't big enough to let you pass through completely, which if I'm not mistaken, makes this issue a duplicate.

Sonicwave

Still an issue in 1.8.1-pre2.

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Still happening in 1.8.2-pre1

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Why is this not a duplicate of MC-1635?

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I believe this is a duplicate of MC-1635.

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(Unassigned)

Confirmed

Minecraft 1.4.3, Minecraft 1.4.5, Minecraft 1.4.6, Minecraft 1.4.7, Snapshot 13w02a, ..., Minecraft 14w20b, Minecraft 1.8, Minecraft 1.8.1-pre3, Minecraft 1.8.1, Minecraft 1.8.2-pre1

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