int draw_img = visible(vicon, x, y);
int draw_win = view_win && viewing == vicon ? 1 : 0;
if( !draw_img && !draw_win ) return 0;
int draw_img = visible(vicon, x, y);
int draw_win = view_win && viewing == vicon ? 1 : 0;
if( !draw_img && !draw_win ) return 0;