The Bug:
Minecarts that occupy the same space maintain their momentum.
Steps to Reproduce:
Build the setup as shown in the provided attachment below.
Place around seven minecarts on the rail above the diamond block.
Break the emerald block and watch the minecarts closely.
Take note as to whether or not minecarts that occupy the same space maintain their momentum.
Observed Behavior:
The minecarts maintain their momentum, although they are not being pushed by anything but themselves.
Expected Behavior:
Minecarts that occupy the same space would not maintain their momentum.
Linked issues
is duplicated by 57
MC-6565
Minecarts can travel without tracks
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MC-6841
Minecarts enter within themselfs and starts moving indepently
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MC-6853
You can place minecarts inside each other
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MC-7787
Minecarts bug. carts group together and dont stop when derailed
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MC-8268
TNT Minecarts go on infinitely if multiple minecarts are pushed.
Resolved
MC-8558
Non_Stoping Minecarts
Resolved
MC-10241
Ridin a minecart to the void
Resolved
MC-13712
Minecart to infinity... and beyond
Resolved
MC-14562
Minecarts go forever when stacked on eachother
Resolved
MC-14955
Minecarts on the same track when pushed glide across any block
Resolved
MC-15178
Multiple Minecarts which stick together leave the rail but still drive
Resolved
MC-15362
ALL Mine Carts Glitch
Resolved
MC-15601
minecarts
Resolved
MC-16026
Hopper Cart not stopping at unpowered Powered Rails.
Resolved
MC-17934
minecrarts are going to the infinite without rail
Resolved
MC-18266
Minecarts can be made to move accross land with no rails or propoltion.
Resolved
MC-73313
Minecarts don't stop at the end of the railroad
Resolved
MC-78210
Minecart bug
Resolved
MC-82557
This bug allows a "Merged Minecart" to shoot of a minecart track and ride indefinitely off of minecart rails and through water.
Resolved
MC-87829
Sound glitch of minecarts
Resolved
MC-107269
Minecart bug
Resolved
MC-108799
Sliding Carts.
Resolved
MC-110248
Minecarts gliding forever
Resolved
MC-110523
Minecart Command Blocks Think They Are on a Rail when They Aren't
Resolved
MC-112284
Minecart(or minecart with chest) bug
Resolved
MC-113244
Minecart stack glitch
Resolved
MC-118797
minecarts riding without rails
Resolved
MC-119730
Minecart booster
Resolved
MC-120318
If you put around 8+ minecarts on a rail and push them they will go on forever unless hitting an obstruction.
Resolved
MC-138257
kinda funny tat mine cart glitch
Resolved
MC-138399
When stacking minecarts in 18w43c and pushing them off the track the continue perpetually in a random direction without stopping.
Resolved
MC-139520
Bug with minecarts
Resolved
MC-145779
When pushed by player, multiple Minecarts inside of each other will cause them to continue moving, even when not on rail
Resolved
MC-152267
when eney type of minecart is tp,ed to a location that push of in a direction and if nuthing is bloking then, eg. hill or hole, thay will travel infenetly
Resolved
MC-160751
offrail minecart cramming bug
Resolved
MC-161234
Minecarts continue without track.
Resolved
MC-162934
so giant momentum building minecart glich
Resolved
MC-167909
Minecarts that do not need rails, are steerable in 8 directions, and never lose momentum.
Resolved
MC-169920
Minecarts moving without rails
Resolved
MC-174160
TnT Minecart Bug
Resolved
MC-177028
Vulnerability report on minecarts (all minecarts have this vulnerability)
Resolved
MC-180845
The minecart is superimposed on a rail and can glide on a flat infinite.
Resolved
MC-182172
No Track, Minecart
Resolved
MC-200510
Minecart
Resolved
MC-204798
Infinite moving minecarts
Resolved
MC-208061
TNT Minecart moves indefinitely without rail
Resolved
MC-208828
minecraft drives by them self's
Resolved
MC-222464
Wagons to infinity
Resolved
MC-226618
You can make minecarts go on forever without them on a rail
Resolved
MC-231871
broken wagons
Resolved
MC-233322
The motion of stacked minecarts grows very fast and finally become infinite.
Resolved
MC-235417
Tnt Bug on Detector rails
Resolved
MC-236030
Flying pig minecart
Resolved
MC-258399
Minecart plays sound even when out of rail
Resolved
MC-275620
Minecart bug
Resolved
MC-275775
Stacked Minecarts dont stop
Resolved
MC-296142
Minecart bug
Resolved
relates to 3
Attachments
Comments 120
Is this still a concern on Minecraft 1.4.4 Pre-Release? If so, please update the version affected.
Can you replicate this issue in latest version of the minecraft? If so, can you please update the ticket?
How is decreasing the hitbox going to fix it? The hit boxen is too small on the minecart in the first place. The way to fix is this to apply some error margin in the equation around the borders of the hitbox(also correct the hitbox).
Can we get a confirmation of whether this happens in 13w10a and an update to the affected versions?
The glitch everyone is seeing is the exact same that made boosters work way back when, when the one cart's mesh intersected the other cart's mesh, causing the physics engine to accelerate both carts.
This happens all the way up to 13w18c, I hadn't known this was found before.
That's it, I'm never posting bugs again lol, always being duplicated...
ALSO, easier way to do it: Place ONE track, spawn many carts on it, touch carts.
You don't need a ramp, you can just stack minecarts on a one block track, then push them off. If are pushed off a high tower, they will gently float down, slower, and more horizontal then a regular minecart.
I dont want this to go cuz i wall doing this on a really high extreme mountin in the snapshot and it flew of the mountin with me in it and i started to glide foward and slowly decend a i was going in a directions fast and slowly decending and i was bossted up by the minecarts slowly falling off but when they did they pushed me up.
so basically this is one of the only planes without mods in minecraft!
Is this still a concern in the latest Minecraft version 14w30c? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
Confirmed in 14w30c. It is harder to place them, but it's possible to summon the minecarts on the rail and push them.
Still doable in 1.8.1-pre2 via dropping the minecarts from above, they'll stack and when stacked they'll push themselves until blocked by an obstacle.
I suggest marking this as related to MC-103933.
I suggest a discussion be brought up on whether this qualifies as as Works As Intended (or unsolfable, if such a resolution type exists) - as this is the second oldest unresolved bug report, and the oldest unassigned one.
Why the unsolvable/WAI explanation? Minecarts behave as entities, as all other mobs do: if they encounter a force pushing on them, they push away to avoid having huge amounts contained in the same space. Of course, this could be bothersome to some, but how would such a thing be fixed? Enabling cramming on minecarts? You could potentially end up with large numbers of minecarts stuck together on the ground, virtually inseparable save for destroying each and every one- they would be an excellent source of lag, along with a long host of other reasons as to why this mechanic is necessary in their functionality.
Thoughts?
If it was just collision, it would push one Minecart in one direction and the other one in the opposite direction. This behavior is so counter-intuitive that's its definitely not WAI. That something is not assigned to someone doesn't mean too much, it's mainly an information for the person it's assigned to. It basically says: You are the one who would have to fix it. It says nothing about if they try to fix it the next week or so, just that no other developer tries it, because it's not their special fields.
Same, they seem to be splitting off instead of moving as one. Might be fixed, but I'm not super experienced with minecarts...
This has been a long lasting problem. I have also encountered this whilst playing 1.5 and 1.6
I've noticed that in my redstone world, I have a piston bolt and when I put a lot of minecarts on the first rail and activate the piston bolt, for one it will make a ton of noise, but the minecarts will do this.
Recently I have found that stacked minecarts has a infinite motion, making them behaves so strange.I think that may be produced buy the pushment between the minecarts.
When I tested this with about 150 minecarts, pushed them, logged out of the world and re-logged, they started going into the opposite direction because the Motion overflowed into negative infinity.
I'd like to request ownership of this ticket since the current reporter has been inactive for over a year. I'm willing to keep this ticket updated and will continue to provide all of the necessary details.
Avoma
Since mine carts can push other mine carts, it would cause an infinite momentum if they are inside each other. One will push the other, and the one pushed will push the other, etc. This can possibly be fixed if they decrease the hit box of their mine carts.