Throw.UpdateTrajectory C# (CSharp) Method

    void UpdateTrajectory()
    {
        Vector2 position = transform.position;
        Vector2 nextPosition = position;

        Vector2 velocity = force;
        if(player.getDirection())
        {
            velocity.x = Mathf.Abs(velocity.x);
        }else
            velocity.x = -Mathf.Abs(velocity.x);

        int i = 0;
        do
        {
            //Debug.Log(i + " " + velocity);
            points.Add(new Vector3(position.x, position.y, z));
            nextPosition += velocity * timeSeg + 0.5f * Physics2D.gravity * timeSeg * timeSeg;
            // Raycast for collision
            RaycastHit2D hit = Physics2D.Linecast(position, nextPosition, mask);
            if (hit)
            {
                Vector2 point = hit.point;
                points.Add(new Vector3(point.x, point.y, z));
                drawLine();
                return;
            }
            position = nextPosition;

            velocity += Physics2D.gravity * timeSeg;
        } while (++i < maxVerts/* && !collision*/);

        drawLine();
    }