setNorth

function directionCheck()
    gpscords = {}
    turtle.equipLeft()
    alphaX, alphaY, alphaZ = gps.locate()
    turtle.equipLeft()
    turtle.dig()
    turtle.forward()
    turtle.equipLeft()
    betaX, betaY, betaZ = gps.locate()
    turtle.equipLeft()
    turtle.back()
    return alphaX, alphaY, alphaZ, betaX, betaY, betaZ
end
function pointNorth(newalphaX, newalphaY, newalphaZ, newbetaX, newbetaY, newbetaZ)
    alphaX = newalphaX
    alphaY = newalphaY
    alphaZ = newalphaZ
    betaX = newbetaX
    betaY = newbetaY
    betaZ = newbetaZ
    if betaX > alphaX then
        --positive x direction
    elseif betaX < alphaX then
        --negative x direction
        turtle.turnLeft()
        turtle.turnLeft()
    elseif betaZ > alphaZ then
        --positive z direction
        turtle.turnLeft()
    elseif betaZ < alphaZ then
        --negative z direction
        turtle.turnRight()
    end
end

function returnDirection(newalphaX, newalphaY, newalphaZ, newbetaX, newbetaY, newbetaZ)
    alphaX = newalphaX
    alphaY = newalphaY
    alphaZ = newalphaZ
    betaX = newbetaX
    betaY = newbetaY
    betaZ = newbetaZ
    if betaX > alphaX then
        --positive x direction
        return "north"
    elseif betaX < alphaX then
        --negative x direction
        return "south"
    elseif betaZ > alphaZ then
        --positive z direction
        return "west"
    elseif betaZ < alphaZ then
        --negative z direction
        return "east"
    end
end

function setDirection(direct)
    if direct == "north" then
        --positive x direction

    elseif direct == "south" then
        --negative x direction
        turtle.turnLeft()
        turtle.turnLeft()
    elseif direct == "west" then
        --positive z direction
        turtle.turnLeft()
    elseif direct == "east" then
        --negative z direction
        turtle.turnRight()
    end
end

function lookNorth()
    newalphaX, newalphaY, newalphaZ, newbetaX, newbetaY, newbetaZ = directionCheck()
    pointNorth(newalphaX, newalphaY, newalphaZ, newbetaX, newbetaY, newbetaZ)
end

function getDirection()
    alphaX, alphaY, alphaZ, betaX, betaY, betaZ = directionCheck()
    return returnDirection(alphaX, alphaY, alphaZ, betaX, betaY, betaZ)
end

function oppDirection(direct)
    if direct == "north" then
        return "south"
    elseif direct == "south" then
        return "north"
    elseif direct == "west" then
        return "east"
    elseif direct == "east" then
        return "west"
    end
end