fluid clearer

term.clear()
print("1: fuel\n2-16: blocks\n\nEnter x:")
x = read()
term.clear()
print("Enter y:")
y = read()
term.clear()

function refuel()
    local savedSlot = turtle.getSelectedSlot()
    turtle.select(1)

    while(not turtle.refuel(10))
    do
        write("Out of fuel! Place more fuel in slot 1 and press enter.")
        read()
        term
        .clear()
    end
    turtle.select(savedSlot)
end

function tryRefuel()
    if turtle.getFuelLevel() < 100 then refuel() end
end

function digForward()
    tryRefuel()

    while(turtle.detect())
    do
        turtle.dig()
    end

    turtle.forward()
end

function placeBlock()
    if turtle.detectDown() then return end

    local savedSlot = turtle.getSelectedSlot()
    blockSlot = 2
    turtle.select(blockSlot)

    while(not turtle.placeDown())
    do
        blockSlot = blockSlot+1
        if blockSlot == 17
        then
            write("Out of blocks! Place more blocks in slots 2-16 and press enter.")
            read()
            term.clear()
            blockSlot = 2
        end

        turtle.select(blockSlot)
    end

    turtle.select(savedSlot)
end

function line()
    placeBlock()
    for i = 1,x
    do
        digForward()
        placeBlock()
    end
end

function square()
    for i = 1,y/2
    do
        line()
        turtle.turnRight()
        digForward()
        turtle.turnRight()
        line()
        turtle.turnLeft()
        digForward()
        turtle.turnLeft()
    end
    line()
    turtle.turnLeft()
    turtle.turnLeft()
end

while(true)
do
    square()
    turtle.digDown()
    turtle.down()
end