mobilefurnace

--Mining turtle carries around a furnace and makes its own charcoal

logs = turtle.getItemCount(1) --Place logs in first slot
planks = turtle.getItemCount(2) --Place planks/fuel in second slot

function insertWood() --Turtle at top of furnace, puts wood and fuel in and moves down
    turtle.select(1)
    turtle.dropDown()
    for i=1,2 do
        turtle.turnRight()
    end
    turtle.forward()
    for i=1,2 do
        turtle.down()
        turtle.turnLeft()
    end
    turtle.forward()
    turtle.select(2)
    turtle.dropUp()
end

function returnHome() --Turtle returns to top of furnace
    turtle.forward()
    for i=1,2 do
        turtle.up()
        turtle.turnLeft()
    end
    turtle.forward()
    for i=1,2 do
        turtle.turnLeft()
    end
end

function placeFurnace() --Places furnace from slot 4, make sure it has 2
    turtle.up()
    if turtle.detect() then
        turtle.back()
        turtle.back()
    end
    turtle.select(4)
    turtle.place()
    turtle.up()
    turtle.forward()
    turtle.turnLeft()
    turtle.turnLeft()
end

function mineFurnace() --Mines the furnace from the top
    turtle.select(4)
    if turtle.compareDown() then
        turtle.digDown()
    end
    while not turtle.detectDown() do
        turtle.down()
    end
end

--Main code

placeFurnace()
print(logs.." logs. "..planks.." planks.")
insertWood()
sleep(logs * 10 + 15) --Sleeps long enough for the wood to become charcoal
turtle.suckUp()
turtle.transferTo(16)
returnHome()
mineFurnace()