In negative X or Z locations, dismounting a minecart on a track next to a ledge, or on a 1 wide track can cause a player to dismount over an air block. This issue is similar to MC-36482, however the fix put in place making the dismount radius smaller doesn't fix the potential to harm players.
Example of the issue:
https://www.youtube.com/watch?v=hEWbUOhESBs
(Note, this was recorded in the previous snapshot, but I've since tested it on the most current)
Steps to reproduce:
Move to an X and/or Z position that is negative and make a 1 wide North-South and a 1 wide East-west rail suspended in the air. Leaving the minecart (Depending on your location) will leave you falling from the air to whatever is below.
Attached a screenshot to show exactly where the dismount locations are (The redstone blocks indicate where the player dismounts)
Finally:
In MC-36482 ElNounch explained the problem and the fix by flooring the values, and I've had someone make said changes to his vanilla minecraft, and the minecarts in -x and -z were no longer deadly.
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Just tested on most current snapshot, issue still exists.
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This error stems from the assumption that numerical truncation in Java is equivalent to flooring (it isn't). Until this is sorted, make your suspended Nether/End rails 3+ blocks wide for sure.
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Since the snapshots are focusing more on bug fixes... can this one please get some attention? 😃
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Confirmed for 14w31a.
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Just verified the issue still exists.
As a note: Dan Shemp (In the comments) built me a custom minecraft server.jar with a fix to the function that calculates where a player dismounts, as detailed by ElNounch in MC-36482, and it is working perfectly for my server.
How can we get some attention to this small, annoying and lethal bug? 🙂
galaxy_2alex
Reopened, thanks
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Just confirmed for 15w38b
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I think this one is fixed after testing on 15w43b.