Turtle "Certus Miner"

term.clear()
term.setCursorPos(1,1)

print("Certus Miner v.1.0")
print("")
print("Certus Erz spawnt auf Höhe 12 bis 74")
print("Die Turtle gräbt ein 8x8 Loch nach unten")
print("Certus Erz wird ignoriert")
print("")
print("Drücken sie Enter...")
local temp = read()
term.clear()
term.setCursorPos(1,1)
print("Achtung!")
print("")
print("Slot 1 muss Certus Quartz Ore enthalten!")
print("Slot 2 muss Charged Certus Quartz Ore enthalten!")
print("Slot 3 muss Treibstoff enhalten!")
print("")
print("Wie tief graben?")

local length   = read()
local left     = length
local willDrop = false
local normCert = false
local charCert = false
local skipNext = false

function checkFuel()
    if turtle.getFuelLevel() < 15 then
        turtle.select(3)
        turtle.refuel()
    end
end

function digBlock()

    turtle.select(1)
    normCert = turtle.compare()
    turtle.select(2)
    charCert = turtle.compare()

    if (not normCert and not charCert) then

        --delay mining due to gravel possibly falling in front of turtle
        while turtle.detect() do

            turtle.dig()
            os.sleep(0.5)

        end

    else

        skip()

    end

end

function skip()

    turtle.select(1)
    normCert = turtle.compare()
    turtle.select(2)
    charCert = turtle.compare()

    while(normCert or charCert) do

        turtle.digDown()
        turtle.down()

        left = left-1

        os.sleep(0.5)

        turtle.select(1)
        normCert = turtle.compare()
        turtle.select(2)
        charCert = turtle.compare()

    end

    digBlock()

    skipNext = true
    status()

end

function status()
    print("[Slot 1] Certus Quartz Ore")
    print("[Slot 2] Charged Certus Quartz Ore")
    print("[Slot 3] Treibstoff")
    print("")
    print("Schichten uebrig : "..left)
    print("Treibstoff : "..turtle.getFuelLevel())

    if skipNext then

        print("")
        print("Die nächste Schicht wird doppelt gegraben!")

    end

end

function dropRoutine()
    willDrop = true

    for i=4,16 do
        if(turtle.getItemCount(i) == 0) then
            willDrop = false
        end
    end

    if(willDrop == true) then
        term.clear()
        term.setCursorPos(1,1)
        print("")
        print("Inventory full!")
        print("Starting Drop Sub-Routine")
        for i=4,16 do
            data = turtle.getItemDetail(i)
            turtle.select(i)
            if data then
                print("Item name: ", data.name)
                print("Item count: ", data.count)

                if(data.name == "minecraft:cobblestone") then
                    turtle.drop(data.count)
                    print("Dropped!")
                end
                if(data.name == "minecraft:dirt") then
                    turtle.drop(data.count)
                    print("Dropped!")
                end
                if(data.name == "minecraft:flint") then
                    turtle.drop(data.count)
                    print("Dropped!")
                end
                if(data.name == "minecraft:gravel") then
                    turtle.drop(data.count)
                    print("Dropped!")
                end
                if(data.name == "chisel:limestone") then
                    turtle.drop(data.count)
                    print("Dropped!")
                end
                if(data.name == "chisel:marble") then
                    turtle.drop(data.count)
                    print("Dropped!")
                end
                if(data.name == "minecraft:netherrack") then
                    turtle.drop(data.count)
                    print("Dropped!")
                end
            else
                print("Empty")
            end
        end

        for loop = 0, 11 do
            term.clear()
            term.setCursorPos(1,1)

            print("Moving Items up...")
            print("")

            print("Sub-Loop ", loop+1, "/ 13")
            for i = 4, 15 do

                turtle.select(i+1)
                data1 = turtle.getItemDetail(i)
                data2 = turtle.getItemDetail(i+1)

                if(not data1 and data2) then

                    turtle.transferTo(i)

                end

            end
        end
    end

    turtle.select(3)

end

function digLayer()

    for x=1,4 do

        for z=1,7 do

            digBlock()
            turtle.forward()

        end

        turtle.turnRight()
        digBlock()
        turtle.forward()
        turtle.turnRight()
        status()

        for z=1,7 do

            digBlock()
            turtle.forward()

        end

        if x < 4 then

            turtle.turnLeft()
            digBlock()
            turtle.forward()
            turtle.turnLeft()

            status()

        end

    end

    dropRoutine()

end

for i=1, length do

    term.clear()
    term.setCursorPos(1,1)
    checkFuel()
    status()
    digLayer()

    if not skipNext then

        turtle.digDown()
        turtle.down()

        left = left-1

    else

        skipNext = false

    end

    turtle.turnRight()

end

term.clear()
term.setCursorPos(1,1)
checkFuel()
status()
print("Fertig!")