sokoban.love/0118-overflowable_button

-- draw a button in the menu if possible
-- if not, stash it behind an overflow ('>>') button
overflowable_button = function(name, x, y, r, onpress1)
	local w = App.width(name)+10
	local x2, y2 = maybe_draw_overflow_button(x, y, w, r)
	if Overflow_button then
		-- overflow
		if not Show_overflow then
			return x, y
		else
			y = y2
		end
	end
	styled_button(name, x,y, onpress1)
	if Overflow_button then
		return x, y+Line_height
	else
		return x+w+10, y
	end
end