0005477: Pathfinding issues when digging Ramp downwards

Notes
(0020792) Logical2u (manager) 2012-02-27 06:10 edited on: 2012-02-27 06:15	I'm looking at your diagram, and it seems like you created an unpathable arrangement. Ramps require more space to work properly than stairs. I'll try and sketch a two layer arrangement for you here. `# - wall + - floor V ^ down, up ramp Layer 2 ##### ##+V. ##### Layer 1 ##### ###^+ #####` This is valid - the ramp needs to connect two passable areas on two different z-levels, and the ramp only allows travel in straight lines - not all possible directions like stairs. If a ramp is connected to a wall on the west, then dwarves can only change z-levels from east to west. `# - wall + - floor V ^ down, up ramp Layer 2 ##### ###V+ ##### Layer 1 ##### ###^+ #####` This isn't - the dwarf goes onto the ramp from Layer 1, and can't keep going in a straight line along the ramp from his initial path to get to layer 2, so he can't go anywhere using the ramp. Does this explain your behaviour?

(0020794) Footkerchief (manager) 2012-02-27 06:30	Also, the wiki has a diagram: http://dwarffortresswiki.org/index.php/DF2012:Ramp#Movement_Using_Ramps [^]

(0020804) zaak (reporter) 2012-02-27 15:11	Im not sure. I have made ramps in DF before using straight line Ramp starts: LVL1 ##### ####V ####V ##### LVL2 ########## ####^++++V ####^++++V ########## LVL3 ############### #########^++++V #########^++++V ############### Problem here is that the Ramp i made: goes like this LVL1 ########## #########V #########V ########## LVL2 ########## ####V++++^ ####V++++^ ########## LVL3: ########## ####^++++V ####^++++V ########## LVL4: ########## ####V++++^ ####V++++^ ########## LVL5: ################## ####^+++++++++++++ ####^+++++++++++++ ################## Minerdwarf stuck on lvl 5, unable to get out starving :( And craftdwarf/Masondwarf, can not collect stone from lvl5 Is it the back and forth movement causing this issue with the ramps?!

(0020805) Rafal99 (reporter) 2012-02-27 15:23	To climb up a ramp there must be: 1. A wall on the same Z-level as ramp next to the ramp. 2. Walkable space above the wall. In our example on level 5: -There are walls on left side of the ramp, but have no walkable space above -There is walkable space above ramp on the right side but has no wall below So your ramps can't be used and it is working as intended. From the side view your ramps would look like that: LVL4: #### _____ LVL5: ####\_____ Hope you get the idea.

Issue History
Date Modified	Username	Field	Change
2012-02-27 02:19	zaak	New Issue
2012-02-27 06:10	Logical2u	Note Added: 0020792
2012-02-27 06:11	Logical2u	Tag Attached: AWAITING UPDATE
2012-02-27 06:15	Logical2u	Note Edited: 0020792	View Revisions
2012-02-27 06:30	Footkerchief	Note Added: 0020794
2012-02-27 15:11	zaak	Note Added: 0020804
2012-02-27 15:23	Rafal99	Note Added: 0020805
2012-02-27 15:24	Rafal99	Tag Attached: CLOSE THIS
2012-02-27 17:04	Footkerchief	Relationship added	duplicate of 0001765
2012-02-27 17:04	Footkerchief	Status	new => resolved
2012-02-27 17:04	Footkerchief	Resolution	open => duplicate
2012-02-27 17:04	Footkerchief	Assigned To	=> Footkerchief
2012-02-27 17:07	Rafal99	Tag Detached: CLOSE THIS
2012-03-05 15:52	Logical2u	Tag Detached: AWAITING UPDATE