StripMineV2

args = {...}
dist = args[1]
run = true
torchDistance = 1
currentDistance = 0
width = 1
placeTorches = true

turtle.select(14)
turtle.refuel()
turtle.select(1)

print("Welcome! Current fuel: ", turtle.getFuelLevel())
print("Enter the distance as an integer...")
maxDistance = io.read()
maxDistance = tonumber(maxDistance)
print("Enter torch distance as an integer...")
maxTorchDistance = io.read()
maxTorchDistance = tonumber(maxTorchDistance)
print("Enter width as an integer...")
maxWidth = io.read()
maxWidth = tonumber(maxWidth)


if maxTorchDistance == 0 then
    print("Okay, I won't place torches.")
    placeTorches = false
end

function placeTorch()
    if turtle.getItemCount(15) > 0 then
            if torchDistance >= maxTorchDistance then
                print("Setting Torch")
                turtle.select(15)
                print(turtle.place())
                turtle.select(1)
                torchDistance = 0
            else
                print("Not placing torch. " , torchDistance , "<" , maxTorchDistance)
            end
        else
            print("Warning: No torches!!")
        end
end

function digSide()
    for width = 1, maxWidth do
        print("Current Width: ", width)
        while turtle.detect() do
            turtle.dig()
        end
        turtle.forward()
        turtle.digUp()
        turtle.digDown()
    end
    for width = 1, maxWidth do
        turtle.back()
        if placeTorches and not torchAlreadyPlaced then
            placeTorch()
            torchAlreadyPlaced = true
        end
    end
    torchAlreadyPlaced = false
end

if turtle.getFuelLevel() < maxDistance*5 then
    print("WARNING: turtle may not have the fuel to move the entire distance required")
end

print("Starting mine")

while run do
    if turtle.getFuelLevel() <= 0 then
        print("NO FUEL. Stopping.")
        break
    end
    print("Distance: " , currentDistance)
    print("TorchDistance: " , torchDistance)

    print("Dig front side")
    while turtle.detect() do
        turtle.dig()
    end
    turtle.digUp()
    turtle.digDown()

    if maxWidth > 0 then
        print("Dig right side")
        turtle.turnRight()
        digSide()
        turtle.turnLeft()
    end

    if maxWidth > 0 then
        print("Dig left side")
        turtle.turnLeft()
        digSide()
        turtle.turnRight()
    end

    if turtle.getItemCount(13) > 0 then
        print("nearly full, chest dumping")
        turtle.select(16)
        turtle.placeDown()
        for a = 1, 14 do
            turtle.select(a)
            turtle.dropDown()
        end
        if turtle.getItemCount(16) < 0 then
            print("Out of chests!! Stopping")
            break
        end
        turtle.select(1)
    end

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

    currentDistance = currentDistance + 1
    torchDistance = torchDistance + 1

    if currentDistance >= maxDistance then
        print("Max distance of " , maxDistance , " reached. Stopping")
        run = false
    end
end