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#2547 SDL: Jerky cursor movement

closed-fixed
Torbjörn Andersson
Graphics (902)
5
2006-05-12
2006-03-23
Torbjörn Andersson
No

Since the backend no longer is responsible for
redrawing the cursor whenever it moves, cursor movement
has become noticeable jerky in some cases.

Some engines call updateScreen() often enough that I
don't notice any difference. In some, it's barely
noticeable. The one where it's really noticeable is the
SCUMM engine.

Discussion

  • Torbjörn Andersson

    Torbjörn Andersson - 2006-03-23
    • assigned_to: nobody --> fingolfin
     

  • Max Horn

    Max Horn - 2006-04-03
    • summary: Jerky cursor movement --> SDL: Jerky cursor movement
     

  • Torbjörn Andersson

    Torbjörn Andersson - 2006-04-11

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    Another example is the menu bar at the top of the screen in
    Lure of the Temptress. Currently, it seems to only call
    updateScreen() when the state of a menu changes, so if you
    pull down one menu, and then move the mouse, the cursor will
    remain frozen, until all of a sudden it jumps to the next
    menu or menu item.

     

  • Torbjörn Andersson

    Torbjörn Andersson - 2006-04-18

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    The jury is still out on which is the proper solution, but I
    have added extra updateScreen() calls in some engines as a
    temporary solution, at least.

    Engines I have modified: lure, queen, SCUMM,
    sword1
    Engines which didn't need modification: cine, gob, kyra,
    SAGA, sword2
    Engines which may need modification: simon, sky

    Both simon and sky are fairly smooth already, so I've taken
    care of the worst offenders.

     

  • Max Horn

    Max Horn - 2006-05-12
    • assigned_to: fingolfin --> eriktorbjorn
     

  • Max Horn

    Max Horn - 2006-05-12

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    Well, if this works to your satisfaction now, feel free to close this item :-)

     

  • Torbjörn Andersson

    Torbjörn Andersson - 2006-05-12
    • status: open --> closed-fixed
     

  • Torbjörn Andersson

    Torbjörn Andersson - 2006-05-12

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    Thanks for reminding me. Since Kirben fixed the Simon engine
    (most noticeably in The Feeble Files), everything looks
    smooth to me.