TreeFarm2.1

--Returns ID of block in front of turtle
function viewBlock()
    local success, data = turtle.inspect()

    if success then
        itemId = data.name
        print(itemId)
        return itemId
    end
end

--BasicWoodcutLoop
function cut()

    for i = 0,6 do
        turtle.digUp()
        turtle.up()
    end

    turtle.dig()
    turtle.forward()

    for i = 0,6 do
        turtle.digDown()
        turtle.down()
    end

    turtle.forward()

end


--Basic movement loop
function moveForward()

    for i = 0,5 do
        turtle.forward()
    end
end

function moveAround()
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
    turtle.forward()
    turtle.forward()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnRight()
end

--Turns and plants sapling
function plant()
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.place()
    turtle.turnLeft()
    turtle.turnLeft()
end

function detectCut()
    viewedBlock = viewBlock()
    if viewedBlock == "minecraft:spruce_log" then
        cut()
    else
        moveAround()
    end

end

--Cuts entire column of trees
function cutColumn()
    for i = 1,treesInColumn do
        detectCut()
        plant()
        if counter < timesToMove then
            moveForward()
            counter = counter + 1
        end
    end
    counter = 0
end

--Updates Faceinit value to current facing (True if facing initial direction, false if opposite)
function updateFacing()
    if faceInit == true then
        faceInit = false
        else
        faceInit = true
    end
end

--Moves between rows to cut the next one
function moveRows()
    if faceInit == true then
        turtle.turnRight()
    else
        turtle.turnLeft()
    end
    moveForward()
    if faceInit == true then
        turtle.turnRight()
    else
        turtle.turnLeft()
    end
    updateFacing()


end






--RunTime Loop
run = true
faceInit = true
treesInColumn = 6 -- UPDATE ME TO FIT SIZE OF TREE FARM
numOfColumns = 4 -- UPDATE ME TO FIT SIZE OF TREE FARM
timesToMove = treesInColumn - 1
counter = 0
blocksToReset = 18

while run == true do
    counter = 0
    counter2 = 0

    for i = 1,numOfColumns do
        cutColumn()
        counter2 = counter2 + 1

        if counter2 < numOfColumns then
            moveRows()
        else
            print("reset")
            turtle.turnRight()
            for i = 1,blocksToReset do
                turtle.forward()
            end

            turtle.down()
            turtle.down()
            turtle.select(1)
            for i = 1,16 do
                turtle.suckDown()
            end

            turtle.up()
            turtle.up()

            for num = 2,16 do
                turtle.select(num)
                turtle.drop()
            end

            turtle.turnRight()
            faceInit = true

        end
    end
    sleep(600)
   -- run = false
end