MC-53445Dismounting minecarts in negative X or Z coords can kill a player
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.
Environment
Windows 7, Java 7 x64
Linked Issues
Attachments1
Created Issue:
Dismounting minecarts in negative X or Z coords can kill a player
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:
InMC-36482ElNounch 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.Environment
Windows 7, Java 7 x64
Attachments1
duplicates
Just tested on most current snapshot, issue still exists.
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.
Since the snapshots are focusing more on bug fixes... can this one please get some attention?
Confirmed for 14w31a.
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?
Reopened, thanks
Just confirmed for 15w38b
I think this one is fixed after testing on 15w43b.