[Bug 21696] New: Civilisation2: round turns take very long time, if screen is focused on own cities

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=21696

           Summary: Civilisation2: round turns take very long time, if
                    screen is focused on own cities
           Product: Wine
           Version: 1.1.38
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: thomas.sachau at gmx.de


If you do start a round turn in Civilisation 2, all other computer players do
their turn. usually you only see the movement of units visible to you, so that
is quickly done. But it seems like there is either something wrong with wine or
Civ2 code, since it takes now very long, when you see your own cities on
screen. From the timing, it might be related to the amount of moves the
computer players do.

My thought is that the game thinks you can see all units and does the moves
slowly as it is done for visible units. But you dont see most enemy units, so
this is a bug, which creates a big slowdown.

Often it helps as a workaround, when you center the screen on some other part
of the screen, the roundturn is much faster, until the current screen moves to
your cities because of a seen movement. In this case, it becomes slow again.

Since i have WinXP in a VM, i can test the game there too and there it works as
expected: Fast roundturns, independent of screen content.

Time difference for bigger games:

-Windows XP: takes a few seconds
-wine: takes a few minutes

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