[MC-3149] Mobs do not realize that they can move between fence posts next to nether brick fence. Created: 16/Nov/12  Updated: 12/Jun/16  Resolved: 01/Nov/15

Status: Resolved
Project: Minecraft: Java Edition
Component/s: None
Affects Version/s: Minecraft 1.4.4, Minecraft 1.4.7, Minecraft 1.5, Minecraft 1.5.2, Minecraft 1.6.2, Minecraft 1.6.4, Minecraft 13w38b, Minecraft 13w38c, Minecraft 13w39a, Minecraft 14w32b, Minecraft 1.8, Minecraft 1.8.1-pre3
Fix Version/s: None

Type: Bug
Reporter: Liam Fallon Assignee: Unassigned
Resolution: Duplicate Votes: 2
Labels: AI, fence, hitbox, hostiles, mob, netherbrick

Attachments: PNG File 2012-11-15_16.52.45.png     PNG File 2013-09-26_19.01.15.png    
Issue Links:
Duplicate
duplicates MC-21109 Pathfinding is fundamentally flawed (... Resolved
CHK:
Confirmation Status: Confirmed

 Description   

Mobs can't walk through a wall of nether brick and normal fences, like players can.

1. Build a cage like the one shown.
2. Spawn zombies
3. Stand inside, and the zombies will NOT be able to reach you.



 Comments   
Comment by Samuel Shank [ 08/Aug/14 ]

confirmed for 14w32b

Comment by Paul Smith [ 14/Feb/14 ]

This is a concern for all mobs with the updated pathfinding AI, even in the latest 14w06b snapshot, and since ALL mobs will have this AI, you can go into the nether surrounded by 4 fence posts and no zombie pigmen will corss the gaps.

Comment by Galaxy_2Alex [ 21/Jan/14 ]

Is this still a concern in the current Minecraft version 1.7.4 / Launcher version 1.3.8 or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Comment by Kyle Cuthbert [ 27/Sep/13 ]

Confirmed for 13w39a, screenshot attached

Comment by [Mod] CubeTheThird [ 26/Sep/13 ]

Is this still a concern in the current Minecraft version 1.6.4 / Launcher version 1.2.5 ? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Comment by Kyle Cuthbert [ 11/Jan/13 ]

the same is true of a corridor of glass panes and iron bars, or a single wide corridor with open trapdoors, or doors considered "closed" but yet running alongside the corridor.

more testing reveals that if you set the same sort of idea up with an open row of blocks in the middle, (so the path is functionally two wide) iron golems do not realize that they can make it

Spiders and cave spiders DO come through any of these setups, probably because they can see through walls

It is also worth noting that if you push them in-between with water, they are smart enough to move out (but not continue down the corridor)

Comment by [Mod] CubeTheThird [ 20/Nov/12 ]

Can confirm. Not sure if intended though...

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