Unity Navigation 사용법, NavMesh, NavAgent

    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            RaycastHit hit;
            if (Physics.Raycast(camera.ScreenPointToRay(Input.mousePosition), out hit))
            {
                SetDestination(hit.point);
            }
        }
        Move();
    }

    private void SetDestination(Vector3 dest)
    {
        destination = dest;
        isMove = true;
        SetAnimation(ANIMATION_QUADRUPED_WALK);
    }

    private void Move()
    {
        if (isMove)
        {
            var dir = destination - transform.position;
            transform.forward = dir; // 바라보는 방향
            transform.position += dir.normalized * Time.deltaTime * 5f;
        }
        if (Vector3.Distance(transform.position, destination) <= 1f)
        {
            isMove = false;
            SetAnimation(ANIMATION_IDLE_C);
        }
    }

    private void SetAnimation(int what)
    {
        animator.SetInteger("animation", what);
    }

agent.updateRotation = false; // 캐릭터가 보는 방향을 내가 직접 지정해 줄거니까 굳이 로테이션을 바꿀 필요 없음
    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            RaycastHit hit;
            if (Physics.Raycast(camera.ScreenPointToRay(Input.mousePosition), out hit))
            {
                SetDestination(hit.point);
            }
        }
        LookMoveDirection();
    }

    private void SetDestination(Vector3 dest)
    {
        destination = dest;
        agent.SetDestination(destination);
        isMove = true;
        SetAnimation(ANIMATION_QUADRUPED_WALK);
    }

    private void LookMoveDirection()
    {
        if (isMove)
        {
            if (agent.velocity.magnitude == 0f)
            {
                isMove = false;
                SetAnimation(ANIMATION_IDLE_C);
                return;
            }

            var dir = new Vector3(agent.steeringTarget.x, transform.position.y, agent.steeringTarget.z) - transform.position;
            transform.forward = dir;
        }
    }

    private void SetAnimation(int what)
    {
        animator.SetInteger("animation", what);
    }