Function can_center_cloud

src/read.c:1079–1085

Callback for getpos_sethilite, also used in determining whether a scroll * should have its regular effects, or not because it was out of range. */

 * should have its regular effects, or not because it was out of range.
 */
staticfn boolean
can_center_cloud(coordxy x, coordxy y)
{
    if (!valid_cloud_pos(x, y))
        return FALSE;
    return (cansee(x, y) && distu(x, y) < 32);
}

staticfn void
display_stinking_cloud_positions(boolean on_off)