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MC-263118

Could diagonally go through a solid block with enough speed on both X and Z axis.

Summary:

Could diagonally go through a solid block with enough speed on both X and Z axis.

(etc. throwing a riptide 3 trident, flying with elytra, have very high level speed effect)

Steps to reproduce:

A easy reproduce method:

1.Build a 1 block wide pillar with any solid blocks.

2. /weather rain and get a riptide 3 trident.

3.Stand at the same position as in the video.

4.Facing at the same direction as in the video.

5.Throw the trident.

Observed Results:

You will go through the pillar.

Expected results:

You will collide with it.

Notes:

Affects any versions 1.8+(maybe earlier) in Java Edition.

Also affects Bedrock Edition.

Analysis:

This is because Minecraft don't detect collision directly, instead, the game detect collision on axes(Y→X→Z or Y→Z→X), when your X and Z speed are both fast enough, the game will consider that you bypassed the block, so you "go through" the block.

Attachments

Comments 5

i can confirm this issue

I think the expected result is slipping to the left or right.

Related to MC-133573 and MC-248738.

Additionally, here is a command to position yourself in the same spot shown in the video (With the y-coordinate left vague):

/execute in minecraft:overworld run tp @s 1001.35 ~ 1001.36 135.00 -4.04

Not relate to the two bugs.

This is because Minecraft don't detect collision directly, instead, the game detect collision on axes(Y→X→Z or Y→Z→X), when your X and Z speed are both fast enough, the game will consider that you bypassed the block, so you "go through" the block.

(Elytra and high-level speed effect could also cause this issue)

Changed the title to "Could diagonally go through a solid block with enough speed on both X and Z axis", because all methods that can get a speed >32 blocks per second on both X and Z axis could cause this issue.

COMETC2021A1

(Unassigned)

Community Consensus

Platform

Normal

Collision, Player

player

1.19.4, 1.20 Release Candidate 1, 1.20, 1.20.2, 1.20.3 Pre-Release 4, ..., 1.21, 1.21.1, 24w33a, 1.21.2, 1.21.3

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