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#5468 SCI: SQ4: Player moves back when going north from the 1st screen

SCI: Space Quest 4
closed-fixed
M. Kiewitz
Also occurs in the original (171) Script bugs (494)
5
2015-04-25
2010-10-21
Diffuse
No

ScummVM version:
ScummVM 1.3.0svn53670 (Oct 21 2010 20:05:43)
Features compiled in: Vorbis FLAC MP3 RGB zLib FluidSynth Theora

Bug details:
On the first game screen, if you try to go up one screen, you get to the screen, but the player automatically returns to the first screen.
This also occurs on the Latex Babes planet, if you go two screens left, one down and up again - you get stuck in the bottom of the screen and if you try to move the game moves you one screen down.
I attached a save game for the second scenario.
I tested the first scenario under DosBox and it doesn't happen there.

Discussion

  • Diffuse

    Diffuse - 2010-10-21

    Latex Babes Planet save

     
    sq4-1.020

  • Diffuse

    Diffuse - 2010-10-21
    • summary: Player can't move to certain areas --> Player can't move to certain areas in SQ4
     

  • Diffuse

    Diffuse - 2010-10-21

    Game details: english cd dos
    Platform: Win32

    encountered this on 1.2 version, tested later with daily build.

     

  • digitall

    digitall - 2010-10-21
    • assigned_to: nobody --> waltervn
     

  • digitall

    digitall - 2010-10-21

    This is a known bug in pathfinding. It occurs in DOSBox, but only with cycles=max. See :
    http://wiki.scummvm.org/index.php/SCI/Bugs#Space_Quest_4

     

  • Max Horn

    Max Horn - 2010-10-22
    • summary: Player can't move to certain areas in SQ4 --> SQ4: Player can't move to certain areas
     

  • Filippos Karapetis

    Filippos Karapetis - 2010-10-28
    • summary: SQ4: Player can't move to certain areas --> SQ4: Player moves back when going north from the 1st screen
     

  • Filippos Karapetis

    Filippos Karapetis - 2010-10-31

    Note that this does not occur when cranking the speed slider all the way up, for some odd reason

     

  • Filippos Karapetis

    Filippos Karapetis - 2010-11-15

    This is a bug with the original game scripts, and is timer related. It occurs in the original as well. As mentioned, it is resolved when cranking the speed slider all the way up in ScummVM.

    Two workarounds for this: either put the speed slider to its maximum setting, or go right, up, left (or left, up, right) to access that screen

    Closing this then

     

  • Filippos Karapetis

    Filippos Karapetis - 2010-11-15
    • assigned_to: waltervn --> thebluegr
    • labels: 415216 --> Also occurs in the original
    • status: open --> closed-later
     

  • M. Kiewitz

    M. Kiewitz - 2015-04-25
    • summary: SQ4: Player moves back when going north from the 1st screen --> SCI: SQ4: Player moves back when going north from the 1st screen
     

  • M. Kiewitz

    M. Kiewitz - 2015-04-25

    added a script patch in commit f4ce7851f849f37851831c3888337feb532425ca, which fixes the issue.

     

  • M. Kiewitz

    M. Kiewitz - 2015-04-25
    • labels: Also occurs in the original --> Also occurs in the original, Script bugs
    • status: closed-later --> closed-fixed
    • assigned_to: Filippos Karapetis --> M. Kiewitz