Excavate Room

local args = {...}
height = args[1]
width = args[2]
length = args[3]
--length step 2
--hight step 3

local x=0
local y=0
local z=0

function dig()
        while turtle.detect() do
            turtle.dig()
            os.sleep(0.5)
        end
end
function digUp()
        while turtle.detectUp() do
            turtle.digUp()
            os.sleep(0.5)
        end
end
function up()
        while turtle.up()==false do
            turtle.digUp()
            os.sleep(0.5)
        end
end
function down()
        while turtle.down()==false do
            turtle.digDown()
            os.sleep(0.5)
        end
end
function forward()
    while turtle.forward()==false do
        os.sleep(1)
        dig()
    end
end
function clear()
    dig()
    forward()
    digUp()
    turtle.digDown()
end
-------------
for x=1,length,1 do
    z=0+height
    while z>0 do
        turtle.turnLeft()
        for y=1,width-1,1 do
            clear()
        end
        turtle.turnRight()
        turtle.turnRight()
        z=z-3
        if z>0 then
            up()
            up()
            up()
            digUp()
        end
        for y=1,width-1,1 do
            clear()
        end
        turtle.turnLeft()
        z=z-3
        if z>0 then
            up()
            up()
            up()
            digUp()
        end
    end
    z=0+height-3
    while z>0 do
        down()
        down()
        down()
        z=z-3
    end
    clear()
end