public IEnumerator LostVit()
    {
        while (true)
        {
            float curSpeed = fpc.RunSpeed;
            yield return(new WaitForSeconds(1));

            if (fpc.PlayerState == PlayerState.RUN)
            {
                if (this.vit >= 4)
                {
                    this.vit -= 4;
                }
                else
                {
                    this.vit = 0;
                    if (curSpeed != walkSpeed)
                    {
                        ResetSpeed();
                    }
                }
                playerInfoPanel.UpdateVit(this.vit / totalVit);
            }
        }
    }