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.
Related issues
is duplicated by
MC-6565
Minecarts can travel without tracks
MC-6841
Minecarts enter within themselfs and starts moving indepently
MC-6853
You can place minecarts inside each other
MC-7787
Minecarts bug. carts group together and dont stop when derailed
MC-8268
TNT Minecarts go on infinitely if multiple minecarts are pushed.
MC-8558
Non_Stoping Minecarts
MC-10241
Ridin a minecart to the void
MC-13712
Minecart to infinity... and beyond
MC-14562
Minecarts go forever when stacked on eachother
MC-14955
Minecarts on the same track when pushed glide across any block
MC-15178
Multiple Minecarts which stick together leave the rail but still drive
MC-15362
ALL Mine Carts Glitch
MC-15601
minecarts
MC-16026
Hopper Cart not stopping at unpowered Powered Rails.
MC-17934
minecrarts are going to the infinite without rail
MC-18266
Minecarts can be made to move accross land with no rails or propoltion.
MC-73313
Minecarts don't stop at the end of the railroad
MC-78210
Minecart bug
MC-82557
This bug allows a "Merged Minecart" to shoot of a minecart track and ride indefinitely off of minecart rails and through water.
MC-87829
Sound glitch of minecarts
MC-107269
Minecart bug
MC-108799
Sliding Carts.
MC-110248
Minecarts gliding forever
MC-110523
Minecart Command Blocks Think They Are on a Rail when They Aren't
MC-112284
Minecart(or minecart with chest) bug
MC-113244
Minecart stack glitch
MC-118797
minecarts riding without rails
MC-119730
Minecart booster
MC-120318
If you put around 8+ minecarts on a rail and push them they will go on forever unless hitting an obstruction.
MC-138257
kinda funny tat mine cart glitch
MC-138399
When stacking minecarts in 18w43c and pushing them off the track the continue perpetually in a random direction without stopping.
MC-139520
Bug with minecarts
MC-145779
When pushed by player, multiple Minecarts inside of each other will cause them to continue moving, even when not on rail
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
MC-160751
offrail minecart cramming bug
MC-161234
Minecarts continue without track.
MC-162934
so giant momentum building minecart glich
MC-167909
Minecarts that do not need rails, are steerable in 8 directions, and never lose momentum.
MC-169920
Minecarts moving without rails
MC-174160
TnT Minecart Bug
MC-177028
Vulnerability report on minecarts (all minecarts have this vulnerability)
MC-180845
The minecart is superimposed on a rail and can glide on a flat infinite.
MC-182172
No Track, Minecart
MC-200510
Minecart
MC-204798
Infinite moving minecarts
MC-208061
TNT Minecart moves indefinitely without rail
MC-208828
minecraft drives by them self's
MC-222464
Wagons to infinity
MC-226618
You can make minecarts go on forever without them on a rail
MC-231871
broken wagons
MC-233322
The motion of stacked minecarts grows very fast and finally become infinite.
MC-235417
Tnt Bug on Detector rails
MC-236030
Flying pig minecart
MC-258399
Minecart plays sound even when out of rail
MC-275620
Minecart bug
MC-275775
Stacked Minecarts dont stop
MC-296142
Minecart bug
relates to
Attachments
Comments
migrated
migrated
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.
migrated
This bug has been around for a LONG time.
migrated
Is this still a concern on Minecraft 1.4.4 Pre-Release? If so, please update the version affected.
migrated
Can you replicate this issue in latest version of the minecraft? If so, can you please update the ticket?
migrated
Easily reproducible in 13w01b and any other version :/
migrated
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).
migrated
Maybe adding a little jitter to the entity ejection code?
migrated
Confirmed in 13w07a
pizza2004
Can we get a confirmation of whether this happens in 13w10a and an update to the affected versions?
migrated
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.
tonkku107
This is a wierd bug, but is it useful?
migrated
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.
migrated
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.
migrated
When I did it, they had little momentum when pushed and actualy gained momentum.
migrated
I think this should stay a future
migrated
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!
GoodKingFilms
Still in 1.7.2
Can a Mod update the affected versions? Thanks.
Jeuv
Confirmed in 14w02c.
migrated
confirmed in 14w10c
Ezekiel
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.
tonkku107
Confirmed in 14w30c. It is harder to place them, but it's possible to summon the minecarts on the rail and push them.
migrated
Still in 1.8
rydian
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.
migrated
Still in 1.8.1
migrated
Still in 1.8.2-pre1
migrated
Still in 1.8.4
migrated
Still in 1.8.6
migrated
Still in 1.8.5 & 1.8.6
migrated
Confirmed for Snapshot 15w31a
migrated
Confirmed for 15w45a
migrated
Confirmed for 15w46a
migrated
Confirmed for 15w47a
migrated
Confirmed for 15w47b
migrated
Confirmed for 15w49a
migrated
Confirmed for 1.8.8 and 1.8.9
migrated
Confirmed for 15w51b.
migrated
Confirmed for 16w02a.
migrated
Confirmed for 16w03a.
migrated
Confirmed for 1.9-pre1
migrated
Confirmed for 1.9-pre3
migrated
Confirmed for 1.9.0
migrated
Confirmed for 1.9.1-pre3.
migrated
Confirmed for 1.9.3-pre3.
migrated
Confirmed for 1.9.4.
migrated
Confirmed for 16w20a.
migrated
Confirmed for 16w21a.
migrated
Confirmed for 16w21b.
migrated
Confirmed for 1.10-pre1.
migrated
Confirmed for 1.10-pre2.
migrated
Confirmed for 1.10.
migrated
I suggest marking this as related to MC-103933.
migrated
Confirmed for 1.10.1.
migrated
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?
FaRo1
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.
JUE13
Confirmed for 1.12-pre7
muzikbike
Having difficulty reproducing this in 18w11a
pokechu22
Same, they seem to be splitting off instead of moving as one. Might be fixed, but I'm not super experienced with minecarts...
migrated
I can reproduce this in 18w30b.
pokechu22
Can you screenshot or upload the setup you're using?
[Mod] Neko
Affects 1.13.2, reopening.
migrated
This has been a long lasting problem. I have also encountered this whilst playing 1.5 and 1.6
migrated
confirmed in 1.14.4 pre release-5
migrated
19w40a
migrated
Confirmed for 19w41a.
jim123100
Confirmed for 19w45b
jim123100
Confirmed for 1.15 pre release-1
jim123100
Confirmed for 20w13b
migrated
This still happens on 20w13b (and 20w14infinity, but that’s a joke snapshot)
bluecrab2
Confirmed in 20w15a
migrated
Can confirm in 20w16a
TheGabro
can confirm 20w17a
migrated
Sorry to bother you but when I go to your site and click log and nothing happens
migrated
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.
numeritos
Affects 1.16 pre2
migrated
Confirmed in 1.16-pre5.
migrated
Confirmed in 1.16-pre7.
migrated
Affects 1.16 Release Candidate 1
[Mod] markderickson
Hi there!
Can confirm in 1.16.1.
pulpetti
In 20w29a!
[Mod] markderickson
Hi there!
I can confirm in snapshot 20w30a.
migrated
Confirmed for 20w45a
Avoma
Can confirm for 20w48a.
Avoma
Can confirm in 20w49a.
migrated
Can confirm in 1.16.4
AxeldeWater
sshhhhht, it's fun and useful 😉
But it's a bug, not gonna lie...
But a useful bug 😉😉😉
Avoma
Can confirm in 21w03a.
Avoma
Can confirm in 21w05a.
Avoma
Can confirm in 21w05b.
Avoma
Can confirm in 21w06a.
Avoma
Can confirm in 21w07a.
Avoma
Can confirm in 1.16.5.
Avoma
Can confirm in 21w08b.
Avoma
Can confirm in 21w11a.
Avoma
Can confirm in 21w13a.
Avoma
Can confirm in 21w14a.
Avoma
Can confirm in 21w15a.
Avoma
Can confirm in 21w17a.
migrated
Affects 1.17
ampolive
Can confirm in 1.17.1 Release Candidate 1.
lovexyn0827
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.
ampolive
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.
ampolive
Can confirm in 21w37a.
Avoma
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.
ampolive
Can confirm in 21w40a.
MMK21
Affects 1.18.1
migrated
Can confirm in 1.19.2
Brain81505
Can confirm in 23w03a
Brain81505
Can confirm in 23w04a
Brain81505
Can confirm in 23w06a
migrated
Can confirm in 1.20
Brain81505
Can confirm in 23w32a
migrated
In 1.20.2 Pre-Release 2
MMK21
Can confirm in 1.20.4
Brain81505
Can confirm in 23w10a
Apollo
Can confirm in 24w33a, Minecart Improvements experiments on or not.
Vortezz
Can confirm in 24w34a
Chilenderino
Can confirm 24w37a (minecart experiment make raplication harder)
Minecraft386882
Affects 1.21.4 release candidate 1.
Minecraft386882
Confirmed in 1.21.4 release candidate 2.
Minecraft386882
Confirmed in 1.21.4
Avoma