// never redraw single tiles, always redraw the whole field
// (redrawing single tiles up to a certain threshold was faster on old,
// now legacy graphics, but slows things down on modern graphics now)
+ // UPDATE: this is now globally defined by value of REDRAWTILES_THRESHOLD
if (redraw_mask & REDRAW_TILES)
redraw_mask |= REDRAW_FIELD;
#endif