Turtle Miner 2.0

-- Script made by Oysi

local args = {...}

local x = tonumber(args[1]) or 1
local y = tonumber(args[2]) or 1
local z = tonumber(args[3]) or 1

function mineForward()
    if turtle.detect() then
        turtle.dig()
    end
    if not turtle.forward() then
        sleep(0.1)
        mineForward()
        return true
    end
end

function mineUp()
    if turtle.detectUp() then
        turtle.digUp()
    end
    if not turtle.up() then
        sleep(0.1)
        mineUp()
        return true
    end
end

function mineUpAndDown()
    local i = 0
    for k = 1, y - 1 do
        i = k
        if mineUp() then
            break
        end
    end
    for k = 1, i do
        turtle.down()
    end
end

function mineForwardProblem()
    local problem = mineForward()
    if not problem then
        mineUpAndDown()
    end
end

function turnLeft()
    repeat until turtle.turnLeft()
end

function turnRight()
    repeat until turtle.turnRight()
end

mineUpAndDown()
for i = 1, x do
    for j = 1, z - 1 do
        mineForwardProblem()
    end
    local f = i%2 == 0 and turnLeft or turnRight
    if i < x then
        f()
        mineForwardProblem()
        f()
    end
end
if x % 2 == 0 then
    turnRight()
    for i = 1, x - 1 do
        mineForward()
    end
    turnRight()
else
    turnLeft()
    for i = 1, x - 1 do
        mineForward()
    end
    turnLeft()
    for i = 1, z - 1 do
        mineForward()
    end
    turnLeft()
    turnLeft()
end