[Freeciv-Dev] (PR#2982) iso-view FOW drawing bug

["Jason Short" <jdorje@xxxxxxxxxxxxxxxxxxxxx>]

[jdorje - Mon Feb  3 07:18:41 2003]:

> Sometimes when drawing is done in iso-view, the fog-of-war is not updated.
> 
> Typically this occurrs when a unit enters a fogged area.  Clearly the
> area is no longer fogged, but this is not immediately updated.  Instead
> the unit itself is drawn.  This means parts of the surrounding tiles are
> drawn, and these are unfogged.  The end result is that the area is still
> fogged, but the box around the unit is unfogged.
> 
> This is difficult to reproduce.  Occasionally it happens with the GTK
> client at the very beginning of a game.  With a lot of buffering of the
> drawing, it seems it can happen all the time.

Now since there are no spurious redraws in center_tile_mapcanvas, it
always happens.  The redraw needs to be done somewhere else.

jason