0008253: Dwarf removing construction gets "creature swapped" onto construction tile, removes floor beneath his feet - Dwarf Fortress Bug Tracker

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ID

Project

Category

View Status

Date Submitted

Last Update

0008253

Dwarf Fortress

Dwarf Mode -- Jobs, Building Construction and Destruction

public

2014-09-06 18:41

2015-03-26 12:34

Reporter

Loci

Assigned To

Priority

normal

Severity

minor

Reproducibility

sometimes

Status

new

Resolution

open

Platform

OS

OS Version

Product Version

0.40.11

Target Version

Fixed in Version

Summary

0008253: Dwarf removing construction gets "creature swapped" onto construction tile, removes floor beneath his feet

Description

A dwarf removing a walkable construction can be "creature swapped" onto the construction he is removing. If this happens, he will happily finish removing the construction and potentially plummet to his doom.

Steps To Reproduce

build a 1-tile wide span of floor tiles
order a middle tile removed
use station orders to march military dwarves back and forth across the span until the removing dwarf ends up on the tile being removed

Additional Information

("Creature swapping" is when a creature in tile A moves into tile B and a creature occupying tile B is automatically relocated to tile A. Creature swapping occurs more frequently with animals and visiting creatures, however fortress dwarves will occasionally swap tiles as well.)

Tags

Relationships

related to	0003371	new		Non-fliers end up on top of walls (swapped positions with flying pets etc?)
has duplicate	0008671	resolved	Dwarfu	Dwarves will deconstruct floors under (themselves/neighboring dwarves?) causing them to fall
related to	0007976	new		Minecarts suddenly 'inaccessible' while being guided
related to	0008845	new		Caravan dwarves stuck in one-tile-wide corridor, trying to precede each other.

Notes
(0030006) smjjames (reporter) 2014-09-06 20:31	This is a really old bug that goes back to 40D at least, maybe older. Also related is that they'll remove a construction while another dwarf is standing on it and sometimes (as is often the case for stairs), they'll stand right on the stair they're removing, causing them to fall.

(0030019) Loci (manager) 2014-09-07 12:18 edited on: 2014-09-07 12:19	@smjjames: Some of those details are outdated. Dwarves will cancel removal if another dwarf is standing on the tile (though there appears to be a timing window where the tile will still be removed right after another dwarf moves to it). The fact that they don't cancel when they are the ones standing on the construction becomes all the more buggy in comparison. The stair removal problem, however, still applies.

(0030023) smjjames (reporter) 2014-09-07 12:59	It's entirely possible that I've been observing the 'creature swap' issue.

Issue History
Date Modified	Username	Field	Change
2014-09-06 18:41	Loci	New Issue
2014-09-06 20:31	smjjames	Note Added: 0030006
2014-09-07 01:01	Footkerchief	Relationship added	related to 0003371
2014-09-07 12:18	Loci	Note Added: 0030019
2014-09-07 12:19	Loci	Note Edited: 0030019	View Revisions
2014-09-07 12:59	smjjames	Note Added: 0030023
2015-01-09 06:29	Footkerchief	Relationship added	related to 0008671
2015-03-26 12:34	Loci	Tag Attached: creature swap
2015-03-29 07:56	Footkerchief	Relationship added	related to 0007976
2015-03-29 07:56	Footkerchief	Relationship added	related to 0008845
2016-05-11 21:54	Dwarfu	Relationship replaced	has duplicate 0008671
2016-05-11 21:54	Dwarfu	Issue Monitored: Detros

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