GPS

local Modem = {}
local WirelessModemFound = false
local Cor

function SaveCor()

    local file = fs.open("/.Cor.Cor", "w")
    file.write(textutils.serialize(Cor))
    file.close()

end

if fs.exists("/.Cor.Cor") then

    Cor = {}
    local file = fs.open("/.Cor.Cor", "r")
    Cor = textutils.unserialize(file.readAll())
    file.close()

end

if term.isColor then

    term.clear()
    term.setCursorPos(1,1)
    print("Color Mode !!! ")

    local GPS_IMAGE = paintutils.loadImage('GPS_IMAGE.nfp')
    paintutils.drawImage(GPS_IMAGE, 1, 1) -- Change 1 and 1 to the co-ords of where you want the top corner of the image to be.

    local Pers = peripheral.getNames()

    for i,name in pairs(Pers) do

        for j,method in pairs(peripheral.getMethods(name)) do

            if (method == 'isWireless') then

                Modem = peripheral.wrap(name)

                if (Modem.isWireless()) then

                    WirelessModemFound = true

                    break

                else

                    Modem = {}

                end

            end

        end

        if (WirelessModemFound) then

            break

        end

    end

    if not(WirelessModemFound) then

        term.clear()
        term.setCursorPos(1,1)
        term.setBackgroundColor(colors.red)
        term.setTextColor(colors.black)
        print("No Wireless Modem Found !!! ")
        term.setBackgroundColor(colors.black)
        term.setTextColor(colors.white)
        error()

    else

        if not(Cor) then

            term.clear()
            paintutils.drawImage(GPS_IMAGE, 1, 1)
            term.setCursorPos(1,1)
            print("Give in cordinates? Y/N")

            local event, key, isheld = os.pullEvent("key")

            if key == keys.y then

                term.clear()
                paintutils.drawImage(GPS_IMAGE, 1, 1)
                term.setCursorPos(1,1)
                Cor = {}
                write("X corditnate: ")
                Cor.x = tonumber(read())
                write("Y corditnate: ")
                Cor.y = tonumber(read())
                write("Z corditnate: ")
                Cor.z = tonumber(read())
                SaveCor()
                term.clear()
                paintutils.drawImage(GPS_IMAGE, 1, 1)
                term.setCursorPos(1,1)
                shell.run("gps", "host", Cor.x, Cor.y, Cor.z)

            else

                Cor = {}
                term.clear()
                paintutils.drawImage(GPS_IMAGE, 1, 1)
                term.setCursorPos(1,1)
                shell.run("gps", "host", Cor.x, Cor.y, Cor.z)

            end

        else

            term.clear()
            paintutils.drawImage(GPS_IMAGE, 1, 1)
            term.setCursorPos(1,1)
            shell.run("gps", "host", Cor.x, Cor.y, Cor.z)

        end

    end

else

    term.clear()
    term.setCursorPos(1,1)
    print("Colorless Mode !!! ")

    local Pers = peripheral.getNames()

    for i,name in pairs(Pers) do

        for j,method in pairs(peripheral.getMethods(name)) do

            if (method == 'isWireless') then

                Modem = peripheral.wrap(name)

                if (Modem.isWireless()) then

                    WirelessModemFound = true

                    break

                else

                    Modem = {}

                end

            end

        end

        if (WirelessModemFound) then

            break

        end

    end

    if not(WirelessModemFound) then

        term.clear()
        term.setCursorPos(1,1)
        term.setBackgroundColor(colors.white)
        term.setTextColor(colors.black)
        print("No Wireless Modem Found !!! ")
        term.setBackgroundColor(colors.black)
        term.setTextColor(colors.white)
        error()

    else

        if not(Cor) then

            term.clear()
            term.setCursorPos(1,1)
            print("Give in cordinates? Y/N")

            local event, key, isheld = os.pullEvent("key")

            if key == keys.y then

                Cor = {}
                write("X corditnate: ")
                Cor.x = tonumber(read())
                write("Y corditnate: ")
                Cor.y = tonumber(read())
                write("Z corditnate: ")
                Cor.z = tonumber(read())
                SaveCor()
                term.clear()
                term.setCursorPos(1,1)
                shell.run("gps", "host", Cor.x, Cor.y, Cor.z)


            else

                Cor = {}
                term.clear()
                term.setCursorPos(1,1)
                shell.run("gps", "host", Cor.x, Cor.y, Cor.z)

            end

        else

            term.clear()
            term.setCursorPos(1,1)
            shell.run("gps", "host", Cor.x, Cor.y, Cor.z)

        end

    end

end