Dwarf Fortress Bug Tracker - Dwarf Fortress
View Issue Details
IDProjectCategoryView StatusDate SubmittedLast Update
0005996Dwarf FortressDwarf Mode -- Transport/Haulingpublic2012-06-08 21:282015-08-31 09:49
ReporterUnHerpers 
Assigned To 
PrioritylowSeverityminorReproducibilityhave not tried
StatusnewResolutionopen 
PlatformOSOS Version
Product Version0.34.11 
Target VersionFixed in Version 
Summary0005996: Minecarts can teleport through walls.
DescriptionWhen a minecart at high speed hits a wall while there is a hole below the minecart it will not hit the wall and instead reappear a few tiles tiles past the wall. If there are more walls where the cart should reappear it will be lodged inside one of them.
Steps To ReproduceFrom the side it looks like this:
\
 \
  \___ #
      ||
Additional InformationSome research was done into it here: http://www.bay12forums.com/smf/index.php?topic=109460.msg3306610#msg3306610 [^]
Tagsminecarts
Relationships
related to 0005970new  Creature goes through solid wall when at high speed 
parent of 0009057new  Minecart crash causes contents to teleport through solid rock 
related to 0006068new  Minecarts falling onto a floor injure creatures directly below the floor 
related to 0006224new  Minecart collisions with creatures sometimes create impassable tiles. 
related to 0007444resolved Toady One Sparring dwarves (and other creatures) can knock each other through walls with charge attacks 
Not all the children of this issue are yet resolved or closed.
Attached Files
Issue History
Date ModifiedUsernameFieldChange
2012-06-08 21:28UnHerpersNew Issue
2012-06-09 12:33UnHerpersTag Attached: minecarts
2012-06-10 19:31UnHerpersNote Added: 0022951
2012-06-10 20:49QuietustNote Added: 0022952
2012-06-10 21:15FootkerchiefRelationship addedrelated to 0005970
2012-06-11 00:39RhenayaNote Added: 0022953
2013-11-01 08:17FootkerchiefRelationship addedrelated to 0006068
2014-01-25 18:13FootkerchiefRelationship addedrelated to 0006224
2014-01-25 18:13FootkerchiefTag Attached: Fixed in 0.34.12?
2014-07-07 22:23FootkerchiefTag RenamedFixed in 0.34.12? => Fixed in 0.40.01?
2015-08-31 09:48lethosorRelationship addedparent of 0009057
2015-08-31 09:49lethosorTag Detached: Fixed in 0.40.01?
2018-04-14 14:33lethosorRelationship addedrelated to 0007444

Notes
(0022951)
UnHerpers   
2012-06-10 19:31   
In trying to get around this problem I found that it only actually seems to work with fortifications. But the thread linked in Additional Information claims it works with walls as well.
(0022952)
Quietust   
2012-06-10 20:49   
What's most likely happening is that the minecart is moving so quickly that a single frame is enough for it to traverse multiple tiles, and it isn't verifying that the tiles between the start and end position are passable.
(0022953)
Rhenaya   
2012-06-11 00:39   
obviously it gets so fast it transcends into a wave form and learn quantum tunneling ... as you cant observe it within that one frame and only at start and end point :x