Z Front

--// turtle-slot [1] Item
--// turtle-slot [2] Coal
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--CODE-------------------------------------------------------------------------------------------------------------------
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--Start height
    local args = {...}
    a = 89-1           --Height
    b = args[1]             --Mining Time

--Startcheck: Fuel-------------------------------------------------------------------------------------------------------
function Start()
    while turtle.getFuelLevel()<(2*a+1000) do
                turtle.select(2)
        turtle.digDown()
        turtle.placeDown()
        turtle.suckDown()
        shell.run("refuel all")
        turtle.select(2)
        turtle.digDown()
        end
end

--Items to Ender-Chest---------------------------------------------------------------------------------------------------
function Item()
        turtle.select(1)
        turtle.placeDown()
        for i=3,16,1 do
                turtle.select(i)
                turtle.dropDown()
        sleep(0.5)
        end
        turtle.select(1)
        turtle.digDown()
end

--Mining actions---------------------------------------------------------------------------------------------------------
function forward()
    while turtle.forward()==false do
        sleep(0.5)
    end
end

function up()
    while turtle.up()==false do
        sleep(0.5)
    end
end

--Mining Forms-----------------------------------------------------------------------------------------------------------
function Mine()
    Start()
    turtle.digDown()
    turtle.turnRight()
    turtle.dig()
    turtle.turnLeft()
    turtle.dig()
    turtle.turnLeft()
    turtle.dig()
    while turtle.down()==true do
        turtle.digDown()
        turtle.dig()
        turtle.turnRight()
        turtle.dig()
        turtle.turnRight()
        turtle.dig()
        turtle.down()
        turtle.digDown()
        turtle.dig()
        turtle.turnLeft()
        turtle.dig()
        turtle.turnLeft()
        turtle.dig()
    end
    turtle.turnRight()
    for p=1,a,1 do
        up()
    end
    Item()
end

function Next()
    up()
    for i=1,4,1 do
        forward()
    end
    turtle.digDown()
    turtle.down()
end

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--Actions----------------------------------------------------------------------------------------------------------------
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for t=1,b,1 do
    for k=1,4,1 do
        Mine()
        Next()
    end
end