Minecraft CC - etOS APP - Simple Strip Mine X

print("How far should I mine?")
local distance = tonumber(read())
local answers = {
    ["no"] = false,
    ["don't"] = false,
    ["dont"] = false,
    ["false"] = false,
    ["do not"] = false,
    ["yes"] = true,
    ["true"] = true,
    ["yeah"] = true,
    ["yea"] = true,
    ["ye"] = true,
    ["yeh"] = true,
    ["sure"] = true,
    ["fuck off"] = false,
}
local comeback = false
print("Should I come back?")
local answer = read()
if answers[answer] ~= nil then
    if answers[answer] then
        comeback = true
    else
        comeback = false
    end
else
    print("Sorry I didn't understand that, please simplify next time.")
    return
end

term.clear()
term.setCursorPos(0,0)

local blocksbroken = 0

local function dig()
    while not turtle.forward() do
        turtle.dig()
        blocksbroken = blocksbroken + 1
    end
end

local function selectBlocks()
    for i=1,16 do
        if turtle.getItemCount(i) > 0 and turtle.getSelectedSlot() ~= i then
            turtle.select(i)
        end
    end
end

for d=1,distance do
    dig()
    if not turtle.detectDown() then
        selectBlocks()
        turtle.placeDown()
    end
    term.clear()
    term.setCursorPos(0,0)
    print("Fuel Level: " .. turtle.getFuelLevel())
    print("Blocks Left: " .. (distance*2)-blocksbroken)
    turtle.digUp()
    blocksbroken = blocksbroken + 1
    term.clear()
    term.setCursorPos(0,0)
    print("Fuel Level: " .. turtle.getFuelLevel())
    print("Blocks Left: " .. (distance*2)-blocksbroken)
end
if comeback then
    turtle.turnLeft()
    turtle.turnLeft()
    for d=1,distance do
        repeat sleep(0.01) until turtle.forward()
    end
    turtle.turnRight()
    turtle.turnRight()
end