[CF-Devel] Client display issues

[crossfire-devel-admin at archives.real-time.com]

I assume everyone is aware of the client display issues, but I haven't
seen anything posted here, so I'll outline the problem as I've observed
it:

I'm using the gtk client with a fairly large view of the map (19x19),
though I suspect that neither of those points are terribly relevant to
the bug.  I have fog-of-war enabled, which probably is relevant.

Anyway, the problem is that when something is on the screen when you
last saw the square, and the square becomes visible again, it is still
displayed there even if it isn't really there anymore.  This is most
common with area-effect spells and monsters.  The simplest way to
demonstrate this is to use some spell like burning hands in one
direction and then run in the opposite direction while the fire is still
on-screen.  Wait briefly for the fire to die, and more back--you'll see
it still there.

There are several ways to get the display to correct itself:

1)  Sometimes moving over the square resets it.  (It's funny to then see
pieces of multi-square monsters left.)

2)  Other things moving over the square (monsters, spells, etc.)
sometimes resets it.

3)  Moving so that the square is on your screen but blocked by a wall
will result in it being reset when you see it directly.

The last point leads me to suspect that the client is setting a bit to
indicate that a map cell needs new information, but it isn't setting it
when a square becomes off-screen.

--PC



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