Monitor Program

COORDS = {
	{8, 5}, 	-- Engine 1
	{8, 13}, 	-- Engine 2
	{8, 21}, 	-- Engine 3
	{38, 5}, 	-- Engine 4
	{38, 13}, 	-- Engine 5
	{38, 21} 	-- Engine 6
}

ENGINE_STATUSES = {
	false,
	false,
	false,
	false,
	false,
	false
}

ALTERNATOR_STATUSES = {
	false,
	false,
	false,
	false,
	false,
	false
}


function printCentered(text)
	local maxw, maxh = monitor.getSize() --screen dimensions
	local curx, cury = monitor.getCursorPos() --cursor pos
	monitor.setCursorPos((maxw-#text)/2,cury) --set it to the point where write will make the text centred
	monitor.write(text) --write the text
end

function startingEngineMessage(nbEngine, isStarting)
	local onofftxt = ""
	if isStarting then
		onofftxt = "on"
	else
		onofftxt = "off"
	end
	monitor.setCursorPos(0, 26)
	monitor.setTextColor(colors.yellow)
	printCentered("Turning "..onofftxt.." Engine "..nbEngine.."...")
end

function processClick(x, y)
	print("Click at x :"..x.." and y : "..y)
	local maxw, maxh = monitor.getSize() --screen dimensions
	local ton = "Turn ON"
	local toff = "Turn OFF"
	-- Check if clicked for Engine 1
	if (y == COORDS[1][2] + 2 and x < maxw / 2) then
		print("Focused Engine 1 !")
		if (x >= COORDS[1][1] and x <= COORDS[1][1] + #ton + 1) then
			print("Turn ON")
			modem.transmit(3, 2, "turn_on")
			startingEngineMessage("1", true)
		else
			print("Turn OFF")
			modem.transmit(3, 2, "turn_off")
			startingEngineMessage("1", false)
		end
	end

	-- Check if clicked for Engine 2
	if (y == COORDS[2][2] + 2 and x < maxw / 2) then
		print("Focused Engine 2 !")
		if (x >= COORDS[2][1] and x <= COORDS[2][1] + #ton + 1) then
			print("Turn ON")
			modem.transmit(4, 2, "turn_on")
			startingEngineMessage("2", true)
		else
			print("Turn OFF")
			modem.transmit(4, 2, "turn_off")
			startingEngineMessage("2", false)
		end
	end

	-- Check if clicked for Engine 3
	if (y == COORDS[3][2] + 2 and x < maxw / 2) then
		print("Focused Engine 3 !")
		if (x >= COORDS[3][1] and x <= COORDS[3][1] + #ton + 1) then
			print("Turn ON")
			modem.transmit(5, 2, "turn_on")
			startingEngineMessage("3", true)
		else
			print("Turn OFF")
			modem.transmit(5, 2, "turn_off")
			startingEngineMessage("3", false)
		end
	end

	-- Check if clicked for Engine 4
	if (y == COORDS[4][2] + 2 and x > maxw / 2) then
		print("Focused Engine 4 !")
		if (x >= COORDS[4][1] and x <= COORDS[4][1] + #ton + 1) then
			print("Turn ON")
			modem.transmit(6, 2, "turn_on")
			startingEngineMessage("4", true)
		else
			print("Turn OFF")
			modem.transmit(6, 2, "turn_off")
			startingEngineMessage("4", false)
		end
	end

	-- Check if clicked for Engine 5
	if (y == COORDS[5][2] + 2 and x > maxw / 2) then
		print("Focused Engine 5 !")
		if (x >= COORDS[5][1] and x <= COORDS[5][1] + #ton + 1) then
			print("Turn ON")
			modem.transmit(7, 2, "turn_on")
			startingEngineMessage("5", true)
		else
			print("Turn OFF")
			modem.transmit(7, 2, "turn_off")
			startingEngineMessage("5", false)
		end
	end

	-- Check if clicked for Engine 6
	if (y == COORDS[6][2] + 2 and x > maxw / 2) then
		print("Focused Engine 6 !")
		if (x >= COORDS[6][1] and x <= COORDS[6][1] + #ton + 1) then
			print("Turn ON")
			modem.transmit(8, 2, "turn_on")
			startingEngineMessage("6", true)
		else
			print("Turn OFF")
			modem.transmit(8, 2, "turn_off")
			startingEngineMessage("6", false)
		end
	end


end

function shutdownMonitor()
	os.reboot()
end


function wait ( time )
  local timer = os.startTimer(time)
  while true do
    local event = {os.pullEvent()}
    if (event[1] == "timer" and event[2] == timer) then
		break
    elseif event[1] == "monitor_touch" then
		processClick(event[3], event[4]) -- a custom function in which you would deal with received events
	elseif event[1] == "modem_message" then
		local mess = event[5]
		print("Got modem message "..mess)
		if mess == "shutdown_monitor" then
			shutdownMonitor()
			break
		end
	end
  end
end

function displayWheel(switch, x, y, nb_engine)
	if ENGINE_STATUSES[nb_engine] then
		if ALTERNATOR_STATUSES[nb_engine] then
			monitor.setTextColor(colors.orange)
		else
			monitor.setTextColor(colors.green)
		end
	else
		monitor.setTextColor(colors.red)
	end

	monitor.setCursorPos(x - 6, y - 1)
	monitor.write(" ___ ")
	monitor.setCursorPos(x - 6, y)
	if (switch and ENGINE_STATUSES[nb_engine]) then
		monitor.write("\/ I \\")
	else
		monitor.write("\/\\ \/\\")
	end

	monitor.setCursorPos(x - 6, y + 1)
	if (switch and ENGINE_STATUSES[nb_engine]) then
		monitor.write("|-O-|")
	else
		monitor.write("| O |")
	end

	monitor.setCursorPos(x - 6, y + 2)
	if (switch and ENGINE_STATUSES[nb_engine]) then
		monitor.write("\\_I_\/")
	else
		monitor.write("\\\/_\\\/")
	end

end

function displayEngineSection(nbEngine, startX, startY)
	monitor.setCursorPos(startX, startY)
	monitor.setTextColor(colors.yellow)
	monitor.write("Engine #"..nbEngine)

	monitor.setCursorPos(startX, startY + 1)
	monitor.write("Status : ")
	monitor.setCursorPos(startX + 9, startY + 1)
	if(ENGINE_STATUSES[nbEngine]) then
		monitor.write("ON ")
	else
		monitor.write("OFF")
	end

	monitor.setCursorPos(startX, startY + 2)
	monitor.setTextColor(colors.green)
	monitor.write("Turn ON")

	monitor.setCursorPos(startX + 9, startY + 2)
	monitor.setTextColor(colors.red)
	monitor.write("Turn OFF")
end

function getEngineStatuses()
	-- Send request
	modem.transmit(9, 2, "get_engine_status_request")

	-- Wait for response
	local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")
	if message[1]=="get_engine_status_response" then
		if ENGINE_STATUSES[1] ~= message[2] then
			monitor.setCursorPos(0, 26)
			monitor.clearLine()
		end
		ENGINE_STATUSES[1] = message[2]

		if ENGINE_STATUSES[2] ~= message[3] then
			monitor.setCursorPos(0, 26)
			monitor.clearLine()
		end
		ENGINE_STATUSES[2] = message[3]

		if ENGINE_STATUSES[3] ~= message[4] then
			monitor.setCursorPos(0, 26)
			monitor.clearLine()
		end
		ENGINE_STATUSES[3] = message[4]

		if ENGINE_STATUSES[4] ~= message[5] then
			monitor.setCursorPos(0, 26)
			monitor.clearLine()
		end
		ENGINE_STATUSES[4] = message[5]

		if ENGINE_STATUSES[5] ~= message[6] then
			monitor.setCursorPos(0, 26)
			monitor.clearLine()
		end
		ENGINE_STATUSES[5] = message[6]

		if ENGINE_STATUSES[6] ~= redstone.getInput("right") then
			monitor.setCursorPos(0, 26)
			monitor.clearLine()
		end
		ENGINE_STATUSES[6] = redstone.getInput("right")
	end
end

function getAlternatorStatuses()
	-- Send request
	modem.transmit(10, 2, "get_alternator_status_request")

	-- Wait for response
	local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")
	if message[1]=="get_alternator_status_response" then
		ALTERNATOR_STATUSES[1] = message[2]
		ALTERNATOR_STATUSES[2] = message[3]
		ALTERNATOR_STATUSES[3] = message[4]
		ALTERNATOR_STATUSES[4] = message[5]
		ALTERNATOR_STATUSES[5] = message[6]
		ALTERNATOR_STATUSES[6] = redstone.getInput("top")
	end
end

function clearMonitor()
	monitor.setCursorPos(0, 0)
	monitor.clearLine()
	monitor.setCursorPos(0, 1)
	monitor.clearLine()
	monitor.setCursorPos(0, 2)
	monitor.clearLine()
	monitor.setCursorPos(0, 3)
	monitor.clearLine()
	monitor.setCursorPos(0, 4)
	monitor.clearLine()
	monitor.setCursorPos(0, 5)
	monitor.clearLine()
	monitor.setCursorPos(0, 6)
	monitor.clearLine()
	monitor.setCursorPos(0, 7)
	monitor.clearLine()
	monitor.setCursorPos(0, 8)
	monitor.clearLine()
	monitor.setCursorPos(0, 9)
	monitor.clearLine()
	monitor.setCursorPos(0, 10)
	monitor.clearLine()
	monitor.setCursorPos(0, 11)
	monitor.clearLine()
	monitor.setCursorPos(0, 12)
	monitor.clearLine()
	monitor.setCursorPos(0, 13)
	monitor.clearLine()
	monitor.setCursorPos(0, 14)
	monitor.clearLine()
	monitor.setCursorPos(0, 15)
	monitor.clearLine()
	monitor.setCursorPos(0, 16)
	monitor.clearLine()
	monitor.setCursorPos(0, 17)
	monitor.clearLine()
	monitor.setCursorPos(0, 18)
	monitor.clearLine()
	monitor.setCursorPos(0, 19)
	monitor.clearLine()
	monitor.setCursorPos(0, 20)
	monitor.clearLine()
	monitor.setCursorPos(0, 21)
	monitor.clearLine()
	monitor.setCursorPos(0, 22)
	monitor.clearLine()
	monitor.setCursorPos(0, 23)
	monitor.clearLine()
	monitor.setCursorPos(0, 24)
	monitor.clearLine()
	monitor.setCursorPos(0, 25)
	monitor.clearLine()
end


function mainTerminalDisplay()
	monitor.setTextScale(1.5)
	local maxw, maxh = monitor.getSize() --screen dimensions

	local switch = false

	while true do
		getEngineStatuses()
		getAlternatorStatuses()
		clearMonitor()

		-- Display Title
		monitor.setCursorPos(1, 2)
		monitor.setTextColor(colors.white)
		printCentered("ENGINE CONTROL SCREEN")

		-- Display Engine sections
		displayEngineSection(1, COORDS[1][1], COORDS[1][2])
		displayWheel(switch, COORDS[1][1], COORDS[1][2], 1)

		displayEngineSection(2, COORDS[2][1], COORDS[2][2])
		displayWheel(switch, COORDS[2][1], COORDS[2][2], 2)

		displayEngineSection(3, COORDS[3][1], COORDS[3][2])
		displayWheel(switch, COORDS[3][1], COORDS[3][2], 3)

		displayEngineSection(4, COORDS[4][1], COORDS[4][2])
		displayWheel(switch, COORDS[4][1], COORDS[4][2], 4)

		displayEngineSection(5, COORDS[5][1], COORDS[5][2])
		displayWheel(switch, COORDS[5][1], COORDS[5][2], 5)

		displayEngineSection(6, COORDS[6][1], COORDS[6][2])
		displayWheel(switch, COORDS[6][1], COORDS[6][2], 6)

		switch = not switch
		wait(0.2)
	end
end

function getEvent()
    local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")

    print("I just received a message on channel: "..senderChannel)
    print("I should apparently reply on channel: "..replyChannel)
    print("The message was: "..message)
    if message=="launch_monitor" then
		mainTerminalDisplay()
	end
end

modem = peripheral.wrap("left")
monitor = peripheral.wrap("back")
monitor.clear()
modem.open(2)
getEvent()