TreeFarm + Charcoal Use

-- Request for Project: Always revert back to previous selected slot after changing it

x=14
z=16
CounterTrees = 0

function hugoCutTree()
    CounterTrees = CounterTrees + 1
    turtle.dig()
    turtle.forward()
    turtle.digDown()
    PlaceDownSafe(1)
    local counter = 0
    while turtle.detectUp() do
        turtle.digUp()
        if turtle.up() then counter = counter + 1 end
    end
    while counter > 0 do
        turtle.digDown()
        if turtle.down() then counter = counter - 1 end
    end
    PlaceDownSafe(1)
end

function PlaceDownSafe( Min )
    if turtle.getItemCount( 16 ) > Min then
        turtle.placeDown()
        return true
    else
        return false
    end
end

function TreeTile()
        turtle.forward()
        turtle.suckDown()
end
function CobbleTile()
    if turtle.detect() then hugoCutTree() else turtle.forward(); PlaceDownSafe(1) end
    turtle.suckDown()
end

function Tile()
    if TileSwitch == true then
        TreeTile()
        TileSwitch = false
    else
        CobbleTile()
        TileSwitch = true
    end
end

while true do
    --print("Let me chop chop trees!")
    --os.pullEvent("char")
    --print("CHOP CHOP nom nom nom....")
    TileSwitch = false
    statsCountTrees = {}
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.select(1)
    turtle.suck(64)
    turtle.refuel(64)
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.up()
    turtle.turnLeft()
    turtle.select(16) -- Careful!
    Tile()
    --TODO: Reful me, feed me, master! (CHECK)

    for i=1,z do
        for j=1,x do Tile() end

        if i < z then
            if i%2 == 0 then turtle.turnLeft() else turtle.turnRight() end
            Tile()
            if i%2 == 0 then turtle.turnLeft() else turtle.turnRight() end
        else
            Tile()
            if i%2 == 1 then turtle.turnLeft() else turtle.turnRight() end
            for j=1,z-1 do Tile() end
        end
    end

    turtle.down()
    turtle.turnLeft()
    turtle.turnLeft()
    for i=1,15 do
        turtle.select(i)
        turtle.dropDown()
    end
    turtle.select(16)
    term.clear()
    print("Finished, Master, chopped ", CounterTrees, " trees :)")
    statsCountTrees[table.maxn(statsCountTrees)+1] = CounterTrees
    CounterTrees = 0
    do
        local sum = 0
        local avg = 0
        for i,v in ipairs(statsCountTrees) do sum = sum + v end
        avg = sum / table.maxn(statsCountTrees)
        print("Statistics for you:")
        print("Total: ",sum)
        print("Average: ",avg)
        print("Fuel: ",turtle.getFuelLevel())
    end
    --print("")

    --print("Press anything to pause me in next 10sec...")
    --os.timer(10)
    --local event, param = os.pullEvent()
    --if param < "timer" then
        --print("Paused!!! Press anything to continue...")
        --os.pullEvent()
    --end
end