lumberFarm

local currentDirection = nil

function getCurrentDirection()
    local blockStatus, blockData = turtle.inspect()
    if (blockStatus == false)
    then
        local tp1X, tp1Y, tp1Z = gps.locate()
        turtle.forward()
        local tp2X, tp2Y, tp2Z = gps.locate()
        turtle.back()

        if (tp1X == tp2X)
        then
            if (tp1Z < tp2Z)
            then
                currentDirection = "South"
            else
                currentDirection = "North"
            end
        else
            if (tp1X < tp2X)
            then
                currentDirection = "East"
            else
                currentDirection = "West"
            end
        end
    else
        turnLeft()
        getCurrentDirection()
    end
end

function turnLeft()
    if (currentDirection == "North")
    then
        currentDirection = "West"
    elseif (currentDirection == "West")
    then
        currentDirection = "South"
    elseif (currentDirection == "South")
    then
        currentDirection = "East"
    else
        currentDirection = "North"
    end
    turtle.turnLeft()
end

function turnRight()
    if (currentDirection == "North")
    then
        currentDirection = "East"
    elseif (currentDirection == "East")
    then
        currentDirection = "South"
    elseif (currentDirection == "South")
    then
        currentDirection = "West"
    else
        currentDirection = "North"
    end
    turtle.turnRight()
end

function gotoPoint(dp, aboveTree)
    dpX = dp.x
    if (aboveTree ~= nil)
    then
        dpY = dp.y  + 1
    else
        dpY = dp.y
    end
    dpZ = dp.z
    local clX, clY, clZ = gps.locate()

    while (clY ~= dpY)
    do
        if (clY > dpY)
        then
            turtle.down()
        else
            turtle.up()
        end
        clX, clY, clZ = gps.locate()
    end

    while (clX ~= dpX)
    do
        if (clX > dpX)
        then
            while (currentDirection ~= "West")
            do
                turnLeft()
            end
        else
            while (currentDirection ~= "East")
            do
                turnLeft()
            end
        end
        turtle.forward()
        clX, clY, clZ = gps.locate()
    end

    while (clZ ~= dpZ)
    do
        if (clZ > dpZ)
        then
            while (currentDirection ~= "North")
            do
                turnLeft()
            end
        else
            while (currentDirection ~= "South")
            do
                turnLeft()
            end
        end
        turtle.forward()
        clX, clY, clZ = gps.locate()
    end
end

local home = {
    x = -1437,
    y = -50,
    z = -399
}

local startingPoints = {
    {
        x = -1438,
        y = -50,
        z = -399
    },
    {
        x = -1438,
        y = -56,
        z = -398
    },
    {
        x = -1438,
        y = -56,
        z = -388
    },
    {
        x = -1440,
        y = -56,
        z = -388
    },
    {
        x = -1440,
        y = -56,
        z = -382
    },
    {
        x = -1440,
        y = -56,
        z = -377
    },
    {
        x = -1444,
        y = -56,
        z = -376
    },
    {
        x = -1445,
        y = -56,
        z = -380
    },
    {
        x = -1445,
        y = -56,
        z = -385
    },
    {
        x = -1449,
        y = -56,
        z = -386
    },
    {
        x = -1450,
        y = -56,
        z = -382
    },
    {
        x = -1450,
        y = -56,
        z = -377
    },
    {
        x = -1455,
        y = -56,
        z = -377
    },
    {
        x = -1455,
        y = -56,
        z = -380
    },
    {
        x = -1455,
        y = -56,
        z = -385
    },
    {
        x = -1460,
        y = -56,
        z = -382
    },
    {
        x = -1460,
        y = -56,
        z = -377
    },
    {
        x = -1464,
        y = -56,
        z = -376
    },
    {
        x = -1465,
        y = -56,
        z = -380
    },
    {
        x = -1465,
        y = -56,
        z = -385
    }
}

local trees = {
    {
        x = -1440,
        y = -57,
        z = -387
    },
    {
        x = -1440,
        y = -57,
        z = -382
    },
    {
        x = -1440,
        y = -57,
        z = -377
    },
    {
        x = -1444,
        y = -57,
        z = -376
    },
    {
        x = -1445,
        y = -57,
        z = -380
    },
    {
        x = -1445,
        y = -57,
        z = -385
    },
    {
        x = -1449,
        y = -57,
        z = -386
    },
    {
        x = -1450,
        y = -57,
        z = -382
    },
    {
        x = -1450,
        y = -57,
        z = -377
    },
    {
        x = -1455,
        y = -57,
        z = -377
    },
    {
        x = -1455,
        y = -57,
        z = -380
    },
    {
        x = -1455,
        y = -57,
        z = -385
    },
    {
        x = -1459,
        y = -57,
        z = -386
    },
    {
        x = -1460,
        y = -57,
        z = -382
    },
    {
        x = -1460,
        y = -57,
        z = -377
    },
    {
        x = -1464,
        y = -57,
        z = -376
    },
    {
        x = -1465,
        y = -57,
        z = -380
    },
    {
        x = -1465,
        y = -57,
        z = -385
    }
}

getCurrentDirection()
gotoPoint(startingPoints[1])
gotoPoint(startingPoints[2])
gotoPoint(startingPoints[3])
gotoPoint(startingPoints[4])
gotoPoint(trees[1])

local startingPointIndex = 4
local treeIndex = 2
while (treeIndex <= #trees)
do
    shell.run("./lumber")
    getCurrentDirection()
    gotoPoint(startingPoints[startingPointIndex])
    gotoPoint(startingPoints[startingPointIndex + 1])
    gotoPoint(trees[treeIndex])

    startingPointIndex = startingPointIndex + 1
    treeIndex = treeIndex + 1
end

shell.run("./lumber")
getCurrentDirection()