mining program

local tArgs = {...}
if #tArgs == 3 then
local x = tonumber(tArgs[1])
local y = tonumber(tArgs[2])
local z = tonumber(tArgs[3])
local looper = 2
local fuel = math.ceil((y*x+2*z)/80)
local rift = false

function enderplace()
        while not turtle.place() do
                turtle.dig()
        end
end

function infFuel()
        turtle.select(16)
        enderplace()
        turtle.select(1)
        turtle.suck(64)
        turtle.refuel()
        turtle.select(16)
        turtle.dig()
        turtle.select(1)
end

function feedme()
        turtle.select(16)
        enderplace()
        turtle.select(1)
        turtle.suck()
        turtle.refuel(fuel)
        turtle.select(16)
        turtle.dig()
        turtle.select(1)
 end

function empty()
        for i = 1 , 14 do
                turtle.select(i)
                turtle.drop()
        end
end

function tunnel()
    for i = 1 , x-1 do
      turtle.dig()
        while not turtle.forward() do
           turtle.dig()
        end
    end
end

function turn()
        turtle.digUp()
        turtle.turnLeft()
        turtle.turnLeft()
        while not turtle.up() do
                turtle.digUp()
        end
end

function turnDown()
        turtle.digDown()
        turtle.down()
        turtle.turnLeft()
        turtle.turnLeft()
end

function transition()
        turtle.turnRight()
        while not turtle.forward() do
                turtle.dig()
        end
        turtle.turnRight()
end

function odd()
    turtle.turnLeft()
    while not turtle.forward() do
        turtle.dig()
    end
    turtle.turnLeft()
end

function even()
    turtle.turnRight()
    while not turtle.forward() do
        turtle.dig()
    end
    turtle.turnRight()
end

function infinite()
print("infinite distance selected")
    turtle.turnRight()
   while looper == 2 do
    infFuel()
        for i = 1 , 52 do
            for t = 1 , y-1 do
                if math.fmod(i,2) == 0 then
                        tunnel()
                        turnDown()
                    else
                        tunnel()
                        turn()
                    end
                end
        tunnel()
                if rift == false then
                        if math.fmod(y,2) == 0 then
                            even()
                            else
                            odd()
                        end
                        rift = true
                    else
                rift = false
                        transition()
                turtle.dig()
                turtle.select(15)
                enderplace()
                empty()
                turtle.select(15)
                turtle.dig()
                turtle.select(1)
            end
    end
  end
end

function limit()
print("limited distance selected")
turtle.turnRight()
  feedme()
        for i = 1 , z do
                for t = 1 , y-1 do
                        if math.fmod(i,2) == 0 then
                            tunnel()
                            turnDown()
                        else
                            tunnel()
                            turn()
                        end
                    end
                    tunnel()
                    if rift == false then
                        if math.fmod(y,2) == 0 then
                            even()
                            else
                            odd()
                        end
                        rift = true
                    else
                    rift = false
                    transition()
                    turtle.dig()
                    turtle.select(15)
                    enderplace()
                    empty()
                    turtle.select(15)
                    turtle.dig()
                    turtle.select(1)
                end
        end
end

-- main program starts here

if z==0 then
    infinite()
    else
    limit()
    end
else
print("please insert a width height and distance after the command")
print("distance of 0 gives infinite distance")
print("place an enderchest with charcoal in it in slot 16")
print("place an enderchest to your sorting system in slot 15")
end