[MC-196556] When projectiles (such as arrows and tridents) move too fast, they can't be teleported by portals and end gateways

Type: Bug
Resolution: Fixed
Fix Version/s: 24w33a, 24w36a
Affects Version/s: 1.16.1, (106)
1.16.2 Pre-release 1, 1.16.2 Release Candidate 1, 1.16.2 Release Candidate 2, 1.16.2, 1.16.3, 1.16.4 Pre-release 1, 1.16.4 Release Candidate 1, 1.16.4, 20w45a, 20w46a, 20w51a, 21w03a, 1.16.5, 21w05a, 21w05b, 21w06a, 21w07a, 21w11a, 1.17 Pre-release 2, 1.17 Pre-release 5, 1.17 Release Candidate 1, 1.17.1 Release Candidate 1, 1.17.1, 21w37a, 21w40a, 21w42a, 21w43a, 1.18 Pre-release 5, 1.18, 1.18.1 Release Candidate 1, 1.18.2, 22w15a, 1.19, 1.19.1 Release Candidate 2, 1.19.1 Release Candidate 3, 1.19.1, 1.19.2 Release Candidate 1, 1.19.2, 22w42a, 1.19.3 Release Candidate 1, 1.19.3 Release Candidate 3, 1.19.3, 23w04a, 23w06a, 1.19.4 Release Candidate 1, 1.19.4 Release Candidate 3, 1.19.4, 23w16a, 23w17a, 23w18a, 1.20 Pre-release 1, 1.20 Pre-release 2, 1.20 Pre-release 3, 1.20 Pre-release 4, 1.20 Pre-release 5, 1.20 Pre-release 6, 1.20 Pre-release 7, 1.20 Release Candidate 1, 1.20, 1.20.1 Release Candidate 1, 1.20.1, 23w31a, 23w32a, 23w33a, 23w35a, 1.20.2 Pre-release 2, 1.20.2 Release Candidate 1, 1.20.2, 23w40a, 23w41a, 23w42a, 23w43b, 23w44a, 23w45a, 23w46a, 1.20.3 Pre-Release 2, 1.20.3 Release Candidate 1, 1.20.4, 23w51b, 24w03b, 24w04a, 24w05b, 24w06a, 24w07a, 24w09a, 24w11a, 24w12a, 24w13a, 24w14a, 1.20.5 Pre-Release 1, 1.20.5 Pre-Release 3, 1.20.5 Release Candidate 2, 1.20.5, 1.20.6 Release Candidate 1, 1.20.6, 24w18a, 24w21b, 1.21 Pre-Release 1, 1.21 Pre-Release 2, 1.21 Pre-Release 3, 1.21 Pre-Release 4, 1.21 Release Candidate 1, 1.21, 24w33a, 1.21.1, 24w34a
Labels:
None

Confirmation Status:
Confirmed
Category:

Projectiles
Mojang Priority:
Normal
Area:
Platform

The bug

When the arrows, tridents and projectiles rate of fire is too fast, it can't be teleported by the portal, end gateway and nether portal.

Code analysis

Code analysis by lovexyn0827 can be found in this comment.

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2020-07-30_19.26.53.png
688 kB
30/Jul/20 1:28 PM
2020-07-30_19.27.17.png
835 kB
30/Jul/20 1:28 PM
2020-07-30_19.27.39.png
836 kB
30/Jul/20 1:28 PM
2020-07-30_19.26.44.png
940 kB
30/Jul/20 1:28 PM
2020-07-30_19.27.07.png
2.27 MB
30/Jul/20 1:28 PM
2020-07-30_19.27.29.png
2.56 MB
30/Jul/20 1:28 PM
MC-196556.mp4
6.71 MB
20/Feb/21 5:03 PM
2024-08-16_20.42.22.png
1020 kB
16/Aug/24 2:42 PM
2024-08-16_20.42.19.png
1.13 MB
16/Aug/24 2:42 PM

is duplicated by

MC-240353 Projectiles thrown through end portal are not teleported to the end.

Resolved

MC-272622 Ender pearls thrown into end gateways occasionally fail to teleport the player or, when they succeed, occasionally cause very heavy memory usage

Resolved

MC-272780 Ender pearls can sometimes pass through nether portal blocks without crossing through dimensions

Resolved

MC-272835 Ender pearls thrown through the gates of Hell may not teleport

Resolved

MC-272836 Sometimes, ender pearls passing through a nether portal will pass through the portal instead of being teleported to the nether

Resolved

MC-272998 Using an ender pearl to teleport through an End portal does not work consistently

Resolved

relates to

MC-2110 Projectiles shot at a Nether Portal appear behind it before disappearing to The Nether

Reopened

MC-156579 Creative players can fly through portals when going quickly enough using elytra or Riptide trident

Resolved

MC-172031 Throwing an ender pearl into a Nether or End portal often has no effect

Resolved

MC-191947 Entities that tick in nether portal for one gametick don't get sent to the nether

Resolved

MC-196897 Entities that move (Velocity) into a nether portal don't get sent to the nether in the same gametick

Resolved

MC-92875 Collisionless blocks ignore entities with high velocity

Resolved

MC-272559 Players cannot traverse dimensions when throwing ender pearls into portals while riding entities

Resolved

MC-272782 Sometimes ender pearls can pass through portals but not land until the player loads the chunks near the portal

Resolved

MC-275638 It is still possible to go through portals without being teleported when going quickly enough by throwing riptide tridents

Resolved

MC-276016 Throwing an ender pearl into the exit portal sometimes sends you to the world spawn point

Resolved

testing discovered

MC-96007 Arrows, trident, projectiles, splash and lingering potions can't be teleported from directly above the end portal, end gateway and nether portal

Resolved

(1 is duplicated by, 10 relates to, 1 testing discovered)

[Mod] Les3awe added a comment - 16/Aug/24 2:43 PM

Still in the 24w33a.

[Mod] Les3awe added a comment - 16/Aug/24 2:43 PM Still in the 24w33a.

lovexyn0827 added a comment - 26/Jan/22 11:28 AM - edited

This is why it happens:

In Minecraft 1.16.1 and earlier versions, thrown projects checks if the OUTLINE shapes of blocks, to find potential collisions and chances to be teleported ("hit" a nether_portal block, for example)(See ThrowableProjectile.tick()). A portal has its non-empty OUTLINE shapes though it has no collision box which can stop regular entity movement, so thrown projectiles can always detect if it can be teleported no matter how high their velocity is.

But in 1.16.2-pre1, something was changed. The OUTLINE shape get no longer used in collision checks, instead, the COLLIDER shape has been used since then (See ThrowableProjectile.tick() & ProjectileUtil.getHitResult()). However, portals has empty COLLIDER shapes, so the teleporting check became dead code. And entities only stays in some seperated points, thus if the velocity of a thrown projectile entity is greater than 1 bloch per tick, it may pass through the portal if it failed to be teleported in the Entity.handleNetherPortal() method.

Suggestions to solve it:

The change may be intended to fix ~~MC-73884~~, simply changing it back is not a good idea. But a addional ray trace may be introduced when the speed of the entity is higher than 1 block pre tick, just like what falling_blocks of concrete powder do.

lovexyn0827 added a comment - 26/Jan/22 11:28 AM - edited This is why it happens: In Minecraft 1.16.1 and earlier versions, thrown projects checks if the OUTLINE shapes of blocks, to find potential collisions and chances to be teleported ("hit" a nether_portal block, for example) (See ThrowableProjectile.tick()) . A portal has its non-empty OUTLINE shapes though it has no collision box which can stop regular entity movement, so thrown projectiles can always detect if it can be teleported no matter how high their velocity is. But in 1.16.2-pre1, something was changed. The OUTLINE shape get no longer used in collision checks, instead, the COLLIDER shape has been used since then ( See ThrowableProjectile.tick() & ProjectileUtil.getHitResult() ). However, portals has empty COLLIDER shapes, so the teleporting check became dead code. And entities only stays in some seperated points, thus if the velocity of a thrown projectile entity is greater than 1 bloch per tick, it may pass through the portal if it failed to be teleported in the Entity.handleNetherPortal() method. Suggestions to solve it: The change may be intended to fix MC-73884 , simply changing it back is not a good idea. But a addional ray trace may be introduced when the speed of the entity is higher than 1 block pre tick, just like what falling_blocks of concrete powder do.

[Mod] ampolive added a comment - 24/Oct/21 2:41 AM

Can confirm in 21w42a.

[Mod] ampolive added a comment - 24/Oct/21 2:41 AM Can confirm in 21w42a.

[Mod] ampolive added a comment - 16/Jul/21 2:07 AM

Can confirm in 1.17.1.

[Mod] ampolive added a comment - 16/Jul/21 2:07 AM Can confirm in 1.17.1.

[Mod] Avoma added a comment - 22/Mar/21 3:59 PM

Can confirm in 21w11a.

[Mod] Avoma added a comment - 22/Mar/21 3:59 PM Can confirm in 21w11a.

[Mod] Avoma added a comment - 20/Feb/21 5:03 PM - edited

Can confirm in 21w07a. Video attached.

[Mod] Avoma added a comment - 20/Feb/21 5:03 PM - edited Can confirm in 21w07a. Video attached.

[Mod] Avoma added a comment - 11/Feb/21 6:32 PM

Can confirm in 21w06a.

[Mod] Avoma added a comment - 11/Feb/21 6:32 PM Can confirm in 21w06a.

[Mod] Avoma added a comment - 04/Feb/21 8:39 PM

Can confirm in 21w05b.

[Mod] Avoma added a comment - 04/Feb/21 8:39 PM Can confirm in 21w05b.

[Mod] Avoma added a comment - 04/Feb/21 4:29 PM

Can confirm in 21w05a.

[Mod] Avoma added a comment - 04/Feb/21 4:29 PM Can confirm in 21w05a.

[Mod] Avoma added a comment - 24/Jan/21 8:50 PM - edited

Can confirm in 21w03a.

[Mod] Avoma added a comment - 24/Jan/21 8:50 PM - edited Can confirm in 21w03a.

Assignee:: [Mojang] SHugoh

Reporter:: [Mod] Les3awe

Votes:: 19 Vote for this issue

Watchers:: 12 Start watching this issue

Created:: 30/Jul/20 1:24 PM

Updated:: 29/Aug/24 4:51 PM

Resolved:: 29/Aug/24 4:51 PM

CHK:: 30/Jul/20 6:28 PM

Details

Description

The bug

Code analysis

Attachments

Attachments

Issue Links

Activity

Collapse comment: [Mod] Les3awe added a comment - 16/Aug/24 2:43 PM

Expand comment: [Mod] Les3awe added a comment - 16/Aug/24 2:43 PM

Collapse comment: lovexyn0827 added a comment - 26/Jan/22 11:28 AM, Edited by lovexyn0827 - 23/Jan/23 2:30 AM

Expand comment: lovexyn0827 added a comment - 26/Jan/22 11:28 AM, Edited by lovexyn0827 - 23/Jan/23 2:30 AM

Collapse comment: [Mod] ampolive added a comment - 24/Oct/21 2:41 AM

Expand comment: [Mod] ampolive added a comment - 24/Oct/21 2:41 AM

Collapse comment: [Mod] ampolive added a comment - 16/Jul/21 2:07 AM

Expand comment: [Mod] ampolive added a comment - 16/Jul/21 2:07 AM

Collapse comment: [Mod] Avoma added a comment - 22/Mar/21 3:59 PM

Expand comment: [Mod] Avoma added a comment - 22/Mar/21 3:59 PM

Collapse comment: [Mod] Avoma added a comment - 20/Feb/21 5:03 PM, Edited by [Mod] Avoma - 20/Feb/21 5:03 PM

Expand comment: [Mod] Avoma added a comment - 20/Feb/21 5:03 PM, Edited by [Mod] Avoma - 20/Feb/21 5:03 PM

Collapse comment: [Mod] Avoma added a comment - 11/Feb/21 6:32 PM

Expand comment: [Mod] Avoma added a comment - 11/Feb/21 6:32 PM

Collapse comment: [Mod] Avoma added a comment - 04/Feb/21 8:39 PM

Expand comment: [Mod] Avoma added a comment - 04/Feb/21 8:39 PM

Collapse comment: [Mod] Avoma added a comment - 04/Feb/21 4:29 PM

Expand comment: [Mod] Avoma added a comment - 04/Feb/21 4:29 PM

Collapse comment: [Mod] Avoma added a comment - 24/Jan/21 8:50 PM, Edited by [Mod] Avoma - 04/Feb/21 4:29 PM

Expand comment: [Mod] Avoma added a comment - 24/Jan/21 8:50 PM, Edited by [Mod] Avoma - 04/Feb/21 4:29 PM

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