/// <summary>
/// 初始化状态机
/// </summary>
public void InitFSM()
{
fsm = new FSMSystem();
PatrolState patrolState = new PatrolState(this.gameObject.transform.position, this.gameObject);
patrolState.AddTransition(Transition.SawPlayer, StateID.Chase);
patrolState.SetNavAgent(navAgent);
ChaseState chaseState = new ChaseState(this.gameObject);
chaseState.AddTransition(Transition.LostPlayer, StateID.Patrol);
chaseState.SetNavAgent(navAgent);
this.transform.GetComponent <SphereCollider>().enabled = true;
fsm.AddState(patrolState);
fsm.AddState(chaseState);
fsm.Start(StateID.Patrol);
}