Turtle Army

--FjB3N2KX
shell.run('clear')
local Fuel = turtle.getFuelLevel()
print("Current Fuel Level " ..Fuel)
if Fuel<100 then
    turtle.refuel()
else
    print("What do you want to do ?" ,"\n", "1.Tunnel", "\n", "2.Clear Space", "\n", "3.Defined Space")
    local answer = io.read()


    local counter=0
    local direction = 0
    local widthcount=0


        if answer=="1" then

            while Fuel>0 do

                turtle.dig()
                turtle.digUp()
                turtle.turnLeft()
                turtle.dig()
                turtle.up()
                turtle.dig()
                turtle.turnRight()
                turtle.turnRight()
                turtle.dig()
                turtle.down()
                turtle.dig()
                turtle.turnLeft()
                turtle.forward(1)


                Fuel = turtle.getFuelLevel()
                if Fuel<500 then
                turtle.refuel()
                else
                Fuel = turtle.getFuelLevel()

                end
            end
        else
        if answer=="2" then
            while Fuel>0 do
                turtle.dig()
                turtle.forward(1)
                turtle.turnLeft()
                turtle.dig()
                turtle.digUp()
                turtle.up()
                turtle.dig()
                turtle.digUp()
                turtle.up()
                turtle.dig()
                turtle.turnRight()
                turtle.turnRight()
                turtle.dig()
                turtle.down()
                turtle.dig()
                turtle.down()
                turtle.dig()
                turtle.turnLeft()

                Fuel = turtle.getFuelLevel()
                if Fuel<500 then
                turtle.refuel()
                else
                Fuel = turtle.getFuelLevel()

                end
            end

        else
            if answer=="3" then

                    local countupheight = 0
                    local countdownheight=0
                    print("Enter length")
                    local length = io.read()
                    length = tonumber(length)
                    print("Enter width")
                    local width = io.read()
                    width=tonumber(width)
                    print("Enter height")
                    local height = io.read()
                    height=tonumber(height)
                if Fuel>0 then


                    while counter<length do
                        turtle.dig()
                        while countupheight<height do
                            turtle.digUp()
                            turtle.up()
                            countupheight = countupheight+1
                            print("up" .. countupheight)
                        end
                        countdownheight=countupheight
                        while countdownheight>0 do
                            turtle.down()
                            countdownheight=countdownheight-1
                            print("down" .. countdownheight)
                        end
                        counter = counter+1
                        countupheight=0
                        countdownheight=0
                        turtle.forward(1)
                        if counter==length then
                            if widthcount<width then
                                if direction==0 then
                                    turtle.turnRight()
                                    turtle.dig()
                                    turtle.forward(1)
                                    turtle.turnRight()
                                    direction=1
                                    counter=0
                                    widthcount = widthcount+1
                                else
                                    turtle.turnLeft()
                                    turtle.dig()
                                    turtle.forward()
                                    turtle.turnLeft()
                                    direction=0
                                    counter=0
                                    widthcount = widthcount+1
                                end
                            end
                        end
                    end
                else
                    Fuel = turtle.getFuelLevel()
                    if Fuel<500 then
                    turtle.refuel()
                    else
                    Fuel = turtle.getFuelLevel()
                    end
                end
            end
        end
    end
end