LedgeSnap_Example.cs

private bool CheckForLedgeHangStart()
    {
        if (m_controller.CollisionState.HasLedge())
        {
            // Ensure we can't grab a ledge within a 20th of a second after the last time we let go of one,
            // so we don't end up sticking to the same ledge.
            if (m_velocity.y < 0f && Time.time - m_lastLedgeGrabEndTime > 0.2f)
            {
                // Ensure that we're close enough to the top of the ledge.
                int wholeBlock = Mathf.RoundToInt(transform.position.y);
                float delta = transform.position.y - wholeBlock;

                Debug.Log(string.Format("curYTransform {0} floored: {1} delta: {2}", transform.position.y, wholeBlock, delta));

                if (delta < 0.05f)
                {
                    // Figure out how much X snap we need to move them to make them on the very edge.
                    wholeBlock = Mathf.RoundToInt(transform.position.x);
                    float xDelta = transform.position.x - wholeBlock;

                    m_controller.Move(new Vector3(-xDelta, -delta, 0f));
                    m_jumpCount = 1;
                    m_velocity = Vector3.zero;
                    m_state = MovementStates.Ledge_Hanging;
                    return true;
                }
            }
        }


        return false;
    }