Miner.lua

function digUpDown()
    -- Dig up
    if turtle.detectUp() then
        turtle.digUp()
    end
    -- Dig down
    if turtle.detectDown() then
        turtle.digDown()
    end
end
function digAndMove()
    if turtle.detect() then
        turtle.dig()
    end
    digUpDown()
    turtle.forward()
end
function placeTorch(forward)
    turtle.select(2)
    if forward == true then
        if turtle.detect() then
            turtle.dig()
        end
        turtle.place()
    else
        if turtle.detectDown() then
            turtle.digDown()
        end
        turtle.placeDown()
    end
end
function mineAdjacent(torch, torchSide)
    digAndMove()

    turtle.turnLeft()
    digAndMove()
    if torch == true and torchSide == 3 then
        placeTorch(false)
    end
    digAndMove()
    if torch == true and torchSide == 1 then
        placeTorch(true)
    end
    turtle.turnRight()
    digAndMove()
    turtle.turnRight()
    digAndMove()
    digAndMove()
    digUpDown()
    if torch == true and torchSide == 0 then
        placeTorch(true)
    end
    turtle.turnLeft()
end
-- Command Line Arguments
tArg = {...}
local len = 0
local torchSide = 0 -- 0=left 1=right 3=under 4=nothing
if #tArg == 0 then
    print("Slot #1 Coal, Slot #2 Torch")
    print("Torches on right side default")
    print("Input Mining Dimension")
    len = io.read()
else
    if #tArg >= 1 then
        len = tonumber(tArg[1])
    end
    if #tArg >= 2 then
        torchSide = tonumber(tArg[2])
    end
end
local coalUsed = 1;
turtle.select(1)
turtle.refuel(1)
for i=1, len do
    print("Mining adjacent!")
    if i % 2 == 0 then
        mineAdjacent(true, torchSide)
    else
        mineAdjacent(false, 0)
    end
    if turtle.getFuelLevel() == 1 then
        print("Refueling")
        turtle.select(1)
        turtle.refuel(4)
        coalUsed = coalUsed + 1
    end
end
print("Total coal spent: ", coalUsed)