[http://sourceforge.net/p/ufoai/bugs/2092 Item 2092] imported from sourceforge.net tracker on 2013-01-28 19:18:54

ver: svn trunk rev. 23997

system: Linux 2.6.28-gentoo-r2 #15 PREEMPT i686 AMD Athlon(tm) XP 1800+ AuthenticAMD GNU/Linux

reproducible: always in campain

steps to reproduce:
1. Start new campain (I tried Very Easy, Standard, Hard, Very Hard).
2. Skip intro.
3. Create HQ, build bases, buy interceptors and equip them with weapons/armors/electronics.
4. Try to intercept UFO flying nearing your base, or try to send Firebird to any ground mission.
5. [BUG] regadless distance to target (even for less than SAM missle range) after several seconds of flying your ship returned to base with message "<aircraft_type> is low on fuel and return to base".
6. Don&#039;t know how to avoid this, I can do research, produce, equip, but I cann&#039;t perform any ground/air mission cause aircraft return to base immedeately regadless distance to target.

Cann&#039;t attach ufoconsole.log cause it bigger than 256kb, tell me if it need, I&#039;ll attach it as several files.

===== Comments Ported from Sourceforge =====

====== geever (2009-04-11 12:07:09) ======

Please attach a savegame.

-geever
====== expii (2009-04-12 18:58:59) ======

save game with SAM missile range ground mission
====== expii (2009-04-12 19:00:02) ======

I&#039;ve attached save game with described bug
====== geever (2009-04-13 08:47:27) ======

I can&#039;t reproduce it here with the savegame either. The dropship reaches the mission. However I see the messages you got about it. Strange... need more info.

Linux 2.6.18-6-k7 #1 SMP Sat Dec 27 10:04:42 UTC 2008 i686 GNU/Linux (Debian Etch)

-geever
====== expii (2009-04-13 09:42:02) ======

What additional info I have to post? SDL libs version, sys libs version or something else?

Food for thought: I spent some time to force Firebird to reach mission (just retargeting it each time it wanna return to base) and start ground mission. But in my first turn after I moved two of my soldiers, I was returned to geoscape screen and game crashed. Unfortunately I didn&#039;t make screenshots, saves or logging. In a few days I&#039;ll have enough time to repeat this long procedure and give you all necessary.
====== geever (2009-04-13 19:55:15) ======

I meant we should find out what happens there. It would be nice if you could debug it. As I said I couldn&#039;t reproduce it.

-geever
====== geever (2009-04-13 19:56:53) ======

Oh, the other problem in battle must be another bug and if I&#039;m right it&#039;s already solved.

-geever
====== expii (2009-04-18 13:43:39) ======

rev. 24084: cann&#039;t reproduce bug, all is ok :)
====== geever (2009-04-18 22:41:09) ======

Closin&#039; then.

-geever
====== ronin-sage (2010-06-27 19:19:26) ======

I&#039;m experiencing the same issue.

Linux 2.6.35-rc3
UFO:AI 2.3
====== geever (2010-06-27 22:53:57) ======

Managed to get some debug info:
Stiletto I...distance: 0.000000...max_distance: 148.167511 (pos: 101.194153, 24.897717)
Stiletto I...distance: 2.252526...max_distance: 148.167511 (pos: 101.194153, 24.897717)
Stiletto I...distance: 0.000000...max_distance: 148.152496 (pos: 101.178024, 24.894541)
Stiletto I...distance: 2.250839...max_distance: 148.152496 (pos: 101.178024, 24.894541)
Stiletto I...distance: 0.000000...max_distance: 148.137497 (pos: 101.161888, 24.891401)
Stiletto I...distance: 2.249235...max_distance: 148.137497 (pos: 101.161888, 24.891401)
Stiletto I...distance: 0.000000...max_distance: 148.120010 (pos: 101.143051, 24.887775)
Stiletto I...distance: 2.247538...max_distance: 148.120010 (pos: 101.143051, 24.887775)
Stiletto I...distance: nan...max_distance: 148.105011 (pos: 101.126892, 24.884712)
Stiletto I...distance: 2.246205...max_distance: 148.105011 (pos: 101.126892, 24.884712)

in some not too rare cases GetDistanceOnGlobe returns nan. Behavior after this is unpredictable...

-geever
====== geever (2010-06-27 23:34:57) ======

I have a patch, I&#039;ll ask you ronin-sage to test it tomorrow. (I don&#039;t have the bug, I cannot prove the fix)

-geever
====== geever (2010-06-28 19:21:10) ======

test-patch
====== geever (2010-06-28 20:32:12) ======

Alienfood confirmed the patch. Committed into r30741 (trunk), r30742 (branch_2.3).

-geever
====== sf-robot (2010-07-13 02:20:06) ======

This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).