Corner stairs have a gap in the hitbox
When stairs are placed in a Z-shape with 2 corner stairs next to each other, placing blocks on/next to the corner stairs behaves inconsistently.
It's hard to explain in words - just look at the pictures.
Linked Issues
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MC-7223Corner stairs, at some angles, have the wrong hit boxDuplicateMC-7395Click through corner stairsDuplicateMC-7598Stair Placing BugDuplicateMC-7608You can place Blocks behind stairsDuplicateMC-8682Can place stairs through corner stairsDuplicateMC-13365You can build and break through corner stairs.DuplicateMC-15132Can not place on back face of stairs. DuplicateMC-31034Incorrect HitboxesDuplicateMC-77981Corner stairs have no hitboxDuplicateMC-85452Incorrect placing of blocks on corner stairs.DuplicateMC-90563No Updating Stair HitboxDuplicateMC-2227Corner stairs have incorrect hitboxesDuplicate
MCPE-119845
Created Issue:
stair placement issue when placing by clicking on corner stair
When stairs are placed in a Z-shape with 2 corner stairs next to each other, placing blocks on/next to the corner stairs behaves inconsistently.
It's hard to explain in words - just look at the pictures.
Attachments4
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![[Mod] CubeTheThird](../../../data/assets/gravatar/cubethethird.jpeg){kind=small}
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stair placement issue when placing by clicking on corner stairCorner stairs have a gap in the hitbox
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Was a bug, got fixed in 1.9, see MC-1307
This is a repost of MC-1307 for Bedrock Minecraft.
The glitch
Stairs always keep the same hitbox even when being attached to the outside or inside of a corner. For inside corner stairs, there will be a gap in its hitbox, allowing players to interact with the world and projectiles to fly through the stair's model box. For outside corner stairs, there will be an extra hitbox, denying players from interacting with the world and projectiles from flying next to the block.
Steps to Reproduce (inside corner stair)
- Place a stair (this is stair A)
- Walk to the space just left of stair A
- While not moving, place another stair on the opposite side of stair A (this is stair B)
- Walk behind stair A and stop before going past stair B
- Break the block directly beneath you
- Aim at the top right corner of stair B
Here, the player cannot interact with the block. Shooting an arrow in this state will make the arrow go through the stair model.
Steps to Reproduce (outside corner stair)
- Place a stair (this is stair A)
- Walk to the space just right of stair A
- Face towards stair A
- Look down, jump, and place another stair (this is stair B)
- Walk backwards 1 block and break the block beneath you
- Aim above the left side of stair B's model
Here, the player can interact with the block. Shooting an arrow in this state will make the arrow stop in the air.
Original Description
So I've notice if you look through the empty parts of stairs there's no hit box for the stairs so you can click a chest or a whatever. But on the stairs that wrap around a corner only one side has no hit box and the other does. I've left some pictures where you can see the hit box of the stairs on one side and another where I'm selecting the chest.
I can confirm this, if you place stairs on this construction, they appear on another place than that you pointed at!
This only happens if you're occupying the space where the stair is intended to go.
This does indeed only happen with stairs though.
(Adapting part of my comment from
MC-15132to here; note, this issue affects more than just placing other stair blocks: )The crosshair (aiming) raytracing is done with the "real" stairs, not the visuals of the stairs. The aimed stairs block can be placed in two orientations which both produce the same visual result.
Screenshot 'stairs_orientations.png' shows the two orientations: the upper placement (after adding a stairs block to the corner) shows the issue, while the lower placement will not.
First I thought this is a minor bug, but then I realized that this can be used to shoot arrows through a visually solid stairs (near the corner). I think the real bug here is that the stair's raytracer method uses only the block's data to figure the shape of the block, instead of the visual shape based also on the neighbor blocks' data. As the raytracer is used for multiple things, it might be good to improve it; doing that would automatically fix all the use cases at once.
Affects 1.6.4.
It still happens in 14w28b as you can see in video.
Valid as of 14w32d
it's because you can hit trough the added corner, see attached screenshots
confirmed for 15w34d
can the title be changed so it is more clear what the issue is?
Fixed in 15w45a.