| Type: | Bug | ||
| Reporter: | [Mod] Michael Wobst | Assignee: | Unassigned |
| Resolution: | Works As Intended | Votes: | 47 |
| Labels: | ice, slime_block | ||
| Attachments: |
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| Issue Links: |
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| Confirmation Status: | Confirmed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Category: |
Block states, Hitboxes, Player
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| Description |
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Place some slabs on an ice/slime block and walk on them. You will have a strange slippy/sticky walking behavior like you would be directly on the ice/slime block. Also works with End Portal Frames and other blocks not being as tall as a full block (Soul Sand, chests, stairs, ...). |
| Comments |
| Comment by Draco Silverwing [ 03/Jun/20 ] |
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I included the relevant code way back in 2013 (I have no reason to believe that it has substantially changed since). The code floors the player's position values to integers, then subtracts 1 from Y. This works fine if the player is standing anywhere within the XY bounds of the block, and directly on top of it, but as soon as the player is any amount above the block (including jumping and flying) the results change. I at the time suggested subtracting 1/16th (instead of 1), then flooring, which will always result in the same block if the player is walking on top of a half slab or similar, and would also work for carpets (which are 1/16th thick). Using a smaller value (eg. epsilon) further minimizes the amount above the block could be and get the wrong block (although there are few blocks in Minecraft that do not have size deltas less than 1/16th, only a pressure plate (depressed) does, but it doesn't have collision). |
| Comment by Aaron Rhodes [ 03/Jun/20 ] |
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Considering you don't even have physical contact with those blocks yet their properties (which rely on physical contact) still apply, it's a no-brainer that it was a bug to begin with. The only reason I can see for this being intended is if the code is set to detect a player in the block space above those blocks, as opposed to being physically on top of the block itself. In that sense the code would be working exactly as it was designed to, despite it not being an intuitive or reasonable design. |
| Comment by Kroppeb [ 08/May/20 ] |
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According to |
| Comment by _zombiehunter [ 13/Feb/20 ] |
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Wow, took you guys a veeery loooong time to decide this is WAI. But still, good to know this is a feature now |
| Comment by Jeremy [ 09/Jan/20 ] |
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Should be 'won't fix' in my opinion. This bug allows greater player creativity since you can place slabs on ice rather than having ice itself aid in ice based speed tunnels. Doesn't allow for anything more, and is a quirk that adds to the possibilities in the game. |
| Comment by RedCMD [ 06/Jul/19 ] |
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related to |
| Comment by Matt S [ 06/Jul/19 ] |
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Affects 1.14.3 Occurs on Farmland and Grass Path as well. |
| Comment by Henrik D. [ 17/May/19 ] |
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I think this bug is actually kind of a feature, because you can use it so widely e.g. for superspeed sprinting tunnels through the nether. It would be a shame if this gets fixed, even though it makes no sense that you could slip on half slabs if there is ice under them. |
| Comment by Connor Steppie [ 12/Dec/18 ] |
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Affects 18w50a |
| Comment by Connor Steppie [ 05/Dec/18 ] |
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Affects 18w49a |
| Comment by Connor Steppie [ 30/Nov/18 ] |
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Affects 18w48b, can I request ownership of the ticket? |
| Comment by Connor Steppie [ 29/Nov/18 ] |
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Affects 18w48a |
| Comment by Connor Steppie [ 25/Nov/18 ] |
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Affects 18w47a and 18w47b |
| Comment by Connor Steppie [ 18/Nov/18 ] |
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Affects 18w46a |
| Comment by Florian CUNY [ 24/Aug/18 ] |
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Affect 1.13.1 |
| Comment by Matthew [ 23/Jun/18 ] |
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Can confirm in 1.13-pre3. |
| Comment by [Helper] Lord_Quadrato [ 25/Apr/18 ] |
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Affects 18w16a |
| Comment by [Mod] bemoty [ 09/Aug/17 ] |
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Can confirm for 1.12.1. |
| Comment by [Mod] Sonicwave [ 22/May/17 ] |
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Confirmed for 1.12-pre5. |
| Comment by user33 [ 28/Apr/17 ] |
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Confirmed for 17w17b |
| Comment by null (Inactive) [ 23/Jun/16 ] |
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Confirmed for 1.10.2. |
| Comment by null (Inactive) [ 22/Jun/16 ] |
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Confirmed for 1.10.1. |
| Comment by null (Inactive) [ 07/Jun/16 ] |
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Confirmed for 1.10-pre2. |
| Comment by null (Inactive) [ 03/Jun/16 ] |
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Confirmed for 1.10-pre1. |
| Comment by null (Inactive) [ 26/May/16 ] |
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Confirmed for 16w21b. |
| Comment by null (Inactive) [ 25/May/16 ] |
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Confirmed for 16w21a. |
| Comment by null (Inactive) [ 18/May/16 ] |
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Confirmed for 16w20a. |
| Comment by null (Inactive) [ 11/May/16 ] |
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Confirmed for 1.9.4. |
| Comment by null (Inactive) [ 05/May/16 ] |
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Confirmed for 1.9.3-pre3. |
| Comment by James (inactive) [ 15/Mar/16 ] |
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Confirmed for 1.9.1-pre3. |
| Comment by Erik [ 25/Feb/16 ] |
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Confirmed for 1.9-pre3 |
| Comment by user-f2760 (Inactive) [ 12/Feb/16 ] |
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jerrykim306: The tracker wasn't available untill 1.4, older versions cannot be added as they don't exist on the tracker and onlycurrent versions can be selected |
| Comment by Ashley5478 [ 12/Feb/16 ] |
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This bug was affected minecraft version 1.0.0 or older. |
| Comment by Commander Sealand [ 02/Dec/15 ] |
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Confirmed for 15w49a |
| Comment by user-f2760 (Inactive) [ 25/Nov/15 ] |
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No, it's not, else this would've been resolved back during 1.4 development, give me 1 reason why this would bs intended |
| Comment by Anomonous Anomonous [ 25/Nov/15 ] |
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Probably Intended |
| Comment by [Mod] redstonehelper [ 22/Nov/15 ] |
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I guess there's multiple ways these problems can be looked at (and fixed). Reopening. |
| Comment by Draco Silverwing [ 22/Nov/15 ] |
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They are NOT caused by the same basic issue. This one is caused by the incorrect order of operations (floor, then -1, rather than -1, then ceil). That issue is caused by the use of a single point check rather than checking all four corners of the player's hitbox. |
| Comment by KingSupernova [ 22/Nov/15 ] |
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While there could be 2 different fixes, they are both caused by the same basic issue. It would probably make more sense to combine them, then if one is fixed without the other just reopen the one that wasn't fixed. |
| Comment by Anon Ymus [ 21/Nov/15 ] |
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I would argue that they are slightly different; |
| Comment by [Mod] redstonehelper [ 21/Nov/15 ] |
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Resolved |
| Comment by KingSupernova [ 21/Nov/15 ] |
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Relates to |
| Comment by Commander Sealand [ 21/Nov/15 ] |
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Confirmed in 15w47c. In addition to ice & slimeblocks, packed ice will also cause strange behavior. |
| Comment by Swekob [ 25/Oct/15 ] |
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Confirmed for 15w43c. |
| Comment by [Mod] Michael Wobst [ 15/Oct/15 ] |
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Thanks. Will take care of this ticket. |
| Comment by [Mod] redstonehelper [ 15/Oct/15 ] |
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Original reporter is inactive, giving ticket to miwob. |
| Comment by [Mod] Michael Wobst [ 15/Oct/15 ] |
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Still in 15w42a and below |
| Comment by [Mod] Michael Wobst [ 16/Sep/15 ] |
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Still in 15w38a and below |
| Comment by [Mod] Michael Wobst [ 30/Jul/15 ] |
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Still an issue in 15w31a, 15w31b |
| Comment by [Mod] Michael Wobst [ 27/Nov/14 ] |
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Still an issue in Minecraft 1.8.1 |
| Comment by [Mod] Michael Wobst [ 14/Oct/14 ] |
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Still an issue in Minecraft 1.8-pre3 and 1.8 |
| Comment by [Mod] Michael Wobst [ 26/Aug/14 ] |
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Still an issue in 1.8-pre1 and 1.8-pre2 |
| Comment by [Mod] Michael Wobst [ 06/Aug/14 ] |
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Still an issue in 14w32a |
| Comment by [Mod] Ezekiel (ezfe) [ 02/Aug/14 ] |
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Please do not mark unreleased versions as affected. You do not have access to this yet. |
| Comment by [Mod] Michael Wobst [ 29/Jul/14 ] |
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Confirmed for 14w30a, 14w30b, 14w30c |
| Comment by [Mod] Michael Wobst [ 20/Jul/14 ] |
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Confirmed for 14w29b |
| Comment by [Mod] Michael Wobst [ 09/Jul/14 ] |
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Confirmed for 14w27b |
| Comment by Draco Silverwing [ 23/May/14 ] |
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"Open" and "Closed: Won't Fix" aren't the same thing. |
| Comment by kasamikona [ 23/May/14 ] |
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guys give up already... this has been in the game since 1.4.2 and it's nearly 1.8 already. i think mojang have unofficially decided to keep this in. perhaps we will see confirmation some time soon. |
| Comment by Marcono1234 [ 23/May/14 ] |
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Confirmed for 14w21b |
| Comment by Draco Silverwing [ 24/May/13 ] |
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Louis: that rapid jumping behavior with trapdoors was fixed around 1.4 I think. I had a parkour type map that used it and had to update it to remove that particular jump. |
| Comment by MegaScience [ 24/May/13 ] |
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Actually, while I agree this probably shouldn't be possible, it does make a difference to put something above it. I've seen people put trap doors above ice to create smaller space. When jumping rapidly while sprinting through it, you go even faster than just having ice. Just pointing that out. |
| Comment by Draco Silverwing [ 25/Mar/13 ] |
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See |
| Comment by _zombiehunter [ 08/Mar/13 ] |
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I reported it because it's a bug. It's entirely up to Mojang if they fix this bug or turn it into a feature. |
| Comment by Corgano Wade [ 07/Mar/13 ] |
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Why did you have to post this? It is awesome for making ice runs |
| Comment by _zombiehunter [ 21/Nov/12 ] |
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@Anon Ymus: |
| Comment by Anon Ymus [ 21/Nov/12 ] |
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Also, it is possible to slide as if you were on ice when standing on the edge of a half-slab next to ice. (see screenshot) |
| Comment by Rolf Campbell [ 19/Nov/12 ] |
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This was a single-player game. |
| Comment by sciguyryan [ 19/Nov/12 ] |
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Ice speedways. Plain and simple. They are a good feature. |
| Comment by Matt Sowden (resba) [ 19/Nov/12 ] |
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Hello! Please provide additional information, so we can better help with your problem:
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| Comment by Rolf Campbell [ 19/Nov/12 ] |
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I don't know what uses sciguyryan is talking about. All I know is that when I built a slab-road across an icy lake, I slip around on the slabs. I think this should be fixed. |
| Comment by sciguyryan [ 31/Oct/12 ] |
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This may or may not be a bug and either way it probably shouldn't be fixed given the number of uses that have come up for this feature since the reintroduction of silk touch on ice. Just like BUD switches it would be rather unfortunate to have this removed. |