mine

local tArgs = {...}
local x = tArgs[1]
local y = tArgs[2]
local z = tArgs[3]
local fuel = ((y*x+2)*z)/80

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

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

function infEven()
   while z == 0 do
        for i = 1 , 28 do
            if turtle.getItemCount(10) == 0 then
                turtle.turnRight()
                for i = 1 , y-1 do
                    tunnel()
                    turn()
                end
                tunnel()
                turtle.turnRight()
                turtle.dig()
                turtle.forward()
                turtle.turnRight()
                for i = 1 , y-1 do
                    tunnel()
                    turnDown()
                end
                tunnel()
                transition()
            else
                turtle.dig()
                turtle.select(15)
                enderplace()
                empty()
                turtle.select(15)
                turtle.dig()
                turtle.select(1)
                end
            end
        end
   end
    turtle.select(16)
    enderplace()
    turtle.select(1)
    turtle.suck(64)
    turtle.refuel(64)
    turtle.select(16)
    turtle.dig()
    turtle.select(1)
end

function infOdd()
    while z == 0 do
        for i = 1 , 28 do
            if turtle.getItemCount(10) == 0 then
                turtle.turnRight()
                for i = 1 , y-1 do
                    tunnel()
                    turn()
                end
                tunnel()
                turtle.turnLeft()
                turtle.dig()
                turtle.forward()
                turtle.turnLeft()
                for i = 1 , y-1 do
                    tunnel()
                    turnDown()
                end
                tunnel()
                transition()
            else
                turtle.dig()
                turtle.select(15)
                enderplace()
                empty()
                turtle.select(15)
                turtle.dig()
                turtle.select(1)
                end
            end
        end
    end
end

function limitEven()
    feedme()
    for i = 1 , z/2 do
        if turtle.getItemCount(10) == 0 then
            turtle.turnRight()
            for i = 1 , y-1 do
                tunnel()
                turn()
            end
            tunnel()
            turtle.turnRight()
            turtle.dig()
            turtle.forward()
            turtle.turnRight()
            for i = 1 , y-1  do
                tunnel()
                turnDown()
            end
            tunnel()
            transition()
        else
            turtle.dig()
            turtle.select(15)
            enderplace()
            empty()
            turtle.select(15)
            turtle.dig()
            turtle.select(1)
            end
        end
    end
end

function limitOdd()
    feedme()
    for i = 1 , z/2 do
        if turtle.getItemCount(10) == 0 then
            turtle.turnRight()
            for i = 1 , y-1 do
                tunnel()
                turn()
            end
            tunnel()
            turtle.turnLeft()
            turtle.dig()
            turtle.forward()
            turtle.turnLeft()
            for i = 1 , y-1 do
                tunnel()
                turnDown()
            end
            tunnel()
            transition()
        else
            turtle.dig()
            turtle.select(15)
            enderplace()
            empty()
            turtle.select(15)
            turtle.dig()
            turtle.select(1)
            end
        end
    end
end

-- main program starts here

if z == 0 then
    if math.fmod(y,2) == 0 then
        infEven()
    else
        infOdd()
    end
else
    if math.fmod(y,2) == 0 then
        limitEven()
    else
        limitOdd()
    end
end