if Global_state.thread == nil then
		-- we're rendering the file picker
		-- compute_layout reuses nodes and so it fills in x,y for us
		for _,button in ipairs(Global_state.file_picker) do
			if in_rect(button, x,y) then
				open_thread(button.data[1].data)
				A()
				break
			end
		end
		return
	end

	if Global_state.thread == nil then
		-- do nothing; everything happens on release
		return
	end

	-- buttons at the HUD level can use the buttons.lua abstraction

	-- other buttons need manual handling
	if Global_state.thread == nil then
		-- we're rendering the file picker
		-- compute_layout reuses nodes and so it fills in x,y for us
		for _,button in ipairs(Global_state.file_picker) do
			if in_rect(button, x,y) then
				open_thread(button.data[1].data)
				A()
				break
			end
		end
	end