[MC-8262] Airborne minecarts rapidly lose horizontal velocity Created: 24/Jan/13 Updated: 25/Mar/21 Resolved: 25/Mar/21 |
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| Status: | Resolved |
| Project: | Minecraft: Java Edition |
| Component/s: | None |
| Affects Version/s: | Snapshot 13w04a, Snapshot 13w09b, Snapshot 13w09c, Minecraft 1.5, Snapshot 13w11a, Minecraft 1.9, Minecraft 1.9.1 Pre-Release 3, Minecraft 1.10.2, Minecraft 16w38a, Minecraft 16w40a, Minecraft 16w41a, Minecraft 16w44a, Minecraft 1.11 Pre-Release 1, Minecraft 1.12.2, Minecraft 18w20c, Minecraft 1.13.1, 1.15.2, 20w21a, 1.16 Release Candidate 1, 1.16, 1.16.2 Pre-release 1, 1.16.2 Release Candidate 1, 1.16.3 Release Candidate 1, 1.16.3, 1.16.4, 20w45a, 20w46a, 20w48a, 20w49a, 20w51a, 21w03a, 21w05a, 21w05b, 21w06a, 21w07a, 21w08a, 21w08b, 21w10a, 21w11a |
| Fix Version/s: | None |
| Type: | Bug | ||
| Reporter: | Marty McFly | Assignee: | Unassigned |
| Resolution: | Works As Intended | Votes: | 20 |
| Labels: | air, horizontal, minecart, motion, velocity | ||
| Attachments: |
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| Confirmation Status: | Confirmed | ||||||||||||
| Category: |
Minecart
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| Description |
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What happens: What I think should happen: How to observe: Code analysis by marcono1234 can be found in this comment |
| Comments |
| Comment by [Mod] Avoma [ 04/Feb/21 ] |
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Can confirm in 21w05b. |
| Comment by Connor Steppie [ 26/Jan/21 ] |
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Relates to MC-8265 |
| Comment by Marty McFly [ 07/Nov/20 ] |
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Can I request ownership? |
| Comment by Marty McFly [ 05/Nov/20 ] |
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Affects 20w45a |
| Comment by Marty McFly [ 30/Jul/20 ] |
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Affects 1.16.2 Pre-release 1 |
| Comment by Marty McFly [ 19/Jun/20 ] |
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Affects 1.16 Release Candidate 1 |
| Comment by [Mod] j_p_smith [ 27/May/20 ] |
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Confirmed in 1.15.2 and 20w21a. |
| Comment by Kraif [ 05/Sep/18 ] |
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Confirmed for 1.13.1. |
| Comment by Marcono1234 [ 27/Sep/16 ] |
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Confirmed for
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| Comment by Galaxy_2Alex [ 26/Sep/16 ] |
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Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue. Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. It will be reopened as soon as the requested information has been delivered. |
| Comment by Marcono1234 [ 18/Mar/16 ] |
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Please link to this comment in the description The following is based on decompiled version of Minecraft 1.9 using MCP 9.24 beta. All method and class names are the names used in the decompiled version. The reason why this happens is very likely that the method net.minecraft.entity.item.EntityMinecart.moveDerailedMinecart() clamps the motion for all three axes to the "maximum speed" (0.4d). This means that it rapidly drops from about 1.1d on the power rail to 0.4d.The problem is that clamping the value between two fixed values makes little sense because the slowing down looks pretty strange then. Additionally the factor used to slow down the minecart could be changed from 0.949999988079071D to a higher value or could be made dependent from the current motion in relation to the maximum speed. Note: Changes to this method will break existing minecart tracks. |
| Comment by Marcono1234 [ 18/Mar/16 ] |
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Confirmed for
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| Comment by user-f2760 (Inactive) [ 17/Mar/16 ] |
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No response for over a year. |
| Comment by ggxl [ 28/Jun/14 ] |
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This may be related to the bug about players losing horizontal motion when shot out of a TNT cannon. |
| Comment by vilhalmer [ 28/Jan/13 ] |
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This has always been the case, and probably isn't really considered a bug per se, but it would be nice to see it changed. Especially now that we have TNT minecarts. |