The bug
Sometimes randomly unable to place ladder while standing in the same block.
The cause
The issue is that ladders are solid, and the hitbox detection upon being placed accounts for when it's facing north (or when it's facing south?), regardless of what direction it's actually going to be facing when placed. (I did not look at the code, this assumption is just from lots of testing.)
This means not only can you wind up being unable to place a ladder due to occupying the space of the north- (or south?-) facing hitbox, but also being able to place a ladder when you're right up against the wall you're placing it on, due to not occupying the space of the north(/south?) hitbox.
Linked issues
is duplicated by 1
relates to 1
Attachments
Comments 9
I've had it happen very inconsistently on 14w11b. Screenshot of circumstances with F3: https://bugs.mojang.com/secure/attachment/60449/2014-03-26_00.20.32.png
Edit: Corrected version number.
Is this still an issue in the current Minecraft Snapshot 15w49b 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.
Yes, easily reproducible in latest snapshot (15w49b). Seems to be endemic to ladders as vines, torches etc are placed for sure.
This still happens in 1.10.2. The issue is that ladders are solid, and the hitbox detection upon being placed accounts for when it's facing north (or when it's facing south?), regardless of what direction it's actually going to be facing when placed. (I did not look at the code, this assumption is just from lots of testing.)
This means not only can you wind up being unable to place a ladder due to occupying the space of the north- (or south?-) facing hitbox, but also being able to place a ladder when you're right up against the wall you're placing it on, due to not occupying the space of the north(/south?) hitbox.
Can confirm in 13w06a. Could not recreate with vines and other attachable blocks - only ladders seem to behave that way.