m = peripheral.wrap("front")
c = peripheral.wrap("right")
facing = c.getFacing()
x = 0
y = 0
canMove = false

function canMove()
    if turtle.detect() then
        return false
    else
        return true
    end
end
function move()
    if canMove() then
        turtle.forward()
        if facing == 0 then
            y = y -1
        end
        if facing == 1 then
            x = x +1
        end
        if facing == 2 then
            y = y +1
        end
        if facing == 3 then
            x = x -1
        end
    end
    print("x = "..x.." y = "..y.."")
end
--the turning fuction
function face(f)
    facing = c.getFacing()
    while facing ~= f do
        turtle.turnLeft()
        facing = c.getFacing()
    end
end
-- move to function
function goto(goX,goY)
--turn at portal

    if x ==0 and y == 0 and facing~= 2 then
        face(2)
    end

    --get out of middle
    function leaveMiddle()
        if goY ~= y or goX ~= x then
            if x ~=0 or x ~= 6 and y ~= 15 then
                if goX == 6 then
                    face(3)
                else
                    face(1)
                end
            end
            while x ~= goX do
                move()
            end
        end
    end
    -- goto right side
    if goY ~= y or goX ~= x then
        if goX == 6 and x ~= 6 then
            if y ~= 3 or y ~= 15 then
                if  y > 9 then
                    face(2)
                    while y ~= 15 do
                        move()
                    end
                end
                if y < 9 and y > 3 then
                    face(0)
                    while y ~= 3 do
                        move()
                    end
                end
                if y < 3 then
                    face(3)
                    while y < 3 do
                        move()
                    end
                end
            end
        end
    end
    if goY > y and goY ~= y then
        face(2)
    else
    if goY < y and goY ~= y then
        face(0)
    end
    while y ~= goY do
        move()
    end
end

function getBookOne()
    goto(1,1)
end
getBookOne()