[Scummvm-tracker] [ScummVM :: Bugs] #15308: ULTIMA6: Pathfinding fails to detect some doors

[ScummVM :: Bugs]

#15308: ULTIMA6: Pathfinding fails to detect some doors
-----------------------------------------+----------------------------
Reporter:  PushmePullyu                  |      Owner:  (none)
    Type:  defect                        |     Status:  new
Priority:  normal                        |  Component:  Engine: Ultima
 Version:                                |   Keywords:
    Game:  Ultima VI: The False Prophet  |
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 Tested with e28c0d5e37a0d4e83c8ec08e28e12b4ea3f3e725 on Fedora Linux
 Workstation 40 x86_64

 When NPCs do pathfinding as part of their schedule, they fail to
 open/detect doors if all of the following conditions are true:
 1. the door is facing E/W
 2. it is closed and unlocked
 3. there is an adjacent object S of it

 This can be observed when Geoffrey is attempting to path from the castle's
 dining hall to his bed in the room S of it:
 The steel door at 312, 370, 0 will not be detected because there is a
 chest of drawers at 313, 371, 0 and consequently pathfinding will fail.

 To reproduce:
 1. Start scummvm with debug logging enabled
 2. Load attached enhanced-mode save
 3. Press space a few times so Geoffrey will attempt to path to his bed
 4. The following message will appear in the log:
  "actor 7 failed to find a path to 13f,171"

 The cause of the problem is an incorrect check in

 {{{
 engines/ultima/nuvie/pathfinder/u6_astar_path.cpp:
 }}}
 {{{
 sint32 U6AStarPath::step_cost(const MapCoord &c1, const MapCoord &c2)
 }}}
-- 
Ticket URL: <https://bugs.scummvm.org/ticket/15308>
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