/// <summary>
/// 执行转换
/// </summary>
/// <param name="trans">转换条件</param>
public void PerformTransition(Transition trans)
{
if (trans == Transition.NullTransition)
{
Debug.LogError("敌人状态 要执行的转换条件为空" + trans);
return;
}
StateID nextStateID = _currentState.GetOutputState(trans);
if (nextStateID == StateID.NullState)
{
Debug.LogError("敌人状态 要执行的转换状态为空" + CurrentState);
return;
}
foreach (EnemyFSMState fsmState in _states)
{
if (fsmState.StateID == nextStateID)
{
_currentState.DoBeforeLeaving();
//Debug.Log("状态转出"+_currentState.StateID);
_currentState = fsmState;
//Debug.Log("状态转入"+_currentState.StateID);
_currentState.DoBeforeEntering();
return;
}
}
}
private void OnTriggerExit2D(Collider2D other)
{
if (other.CompareTag("Player"))
{
currentState = EnemyFSMState.MOVE;
}
}
public void AddState(EnemyFSMState state)
{
if (_states == null)
{
_states = new List <EnemyFSMState>();
}
if (state == null)
{
Debug.LogError("要添加的状态为空");
return;
}
if (_states.Count == 0)
{
_states.Add(state);
_currentState = state;
_currentState.DoBeforeEntering();
return;
}
foreach (EnemyFSMState fsmState in _states)
{
if (fsmState.StateID == state.StateID)
{
Debug.Log("要添加的状态ID" + state.StateID + "已添加");
return;
}
}
_states.Add(state);
}
/// <summary>
/// This method places new states inside the FSM,
/// or prints an ERROR message if the state was already inside the List.
/// First state added is also the initial state.
/// </summary>
public void AddState(EnemyFSMState s)
{
// Check for Null reference before deleting
if (s == null)
{
Debug.LogError("EnemyFSM ERROR: Null reference is not allowed");
}
// First State inserted is also the Initial state,
// the state the machine is in when the simulation begins
if (states.Count == 0)
{
states.Add(s);
currentState = s;
currentStateID = s.ID;
return;
}
// Add the state to the List if it's not inside it
foreach (EnemyFSMState state in states)
{
if (state.ID == s.ID)
{
Debug.LogError("EnemyFSM ERROR: Impossible to add state " + s.ID.ToString() +
" because state has already been added");
return;
}
}
states.Add(s);
}
private void OnCollisionEnter2D(Collision2D col)
{
if (col.gameObject.CompareTag("Player"))
{
timeWaitedSinceAttack = 0;
Attack();
currentState = EnemyFSMState.WAIT;
}
}
void Wait()
{
timeWaited += Time.deltaTime;
if (timeWaited > waitTime)
{
currentState = EnemyFSMState.MOVE;
timeWaited = 0f;
}
}
void Follow()
{
if (enemyMovement == true)
{
transform.position = Vector3.MoveTowards(transform.position, target, speed * Time.deltaTime);
}
if (dist > visionRadious)
{
currentState = EnemyFSMState.MOVE;
}
}
void ChangePath()
{
currentPathNode++;
if (currentPathNode >= path.Length)
{
currentPathNode = 0;
}
if (dist <= visionRadious)
{
currentState = EnemyFSMState.FOLLOW;
}
else
{
currentState = EnemyFSMState.WAIT;
}
}
void Move()
{
if (enemyMovement == true)
{
this.transform.position = Vector3.MoveTowards(this.transform.position, path[currentPathNode].position, speed * Time.deltaTime);
}
if (dist <= visionRadious)
{
currentState = EnemyFSMState.FOLLOW;
}
else if (Vector3.Distance(this.transform.position, path[currentPathNode].position) < 0.001f)
{
currentState = EnemyFSMState.CHANGE_PATH;
}
}
void Follow()
{
if (enemyMovement == true)
{
transform.position = Vector3.MoveTowards(transform.position, target, speed * Time.deltaTime);
}
Vector3 diff = target - transform.position;
if (Mathf.Abs(diff.x) > Mathf.Abs(diff.y))
{
if (diff.x > 0)
{
anim.Play("Bat_Idle");
}
else
{
anim.Play("Bat_Idle");
}
}
else
{
if (diff.y > 0)
{
anim.Play("Bat_Back");
}
else
{
anim.Play("Bat_Idle");
}
}
if (dist > visionRadious)
{
currentState = EnemyFSMState.MOVE;
}
}
/// <summary>
/// This method tries to change the state the FSM is in based on
/// the current state and the transition passed. If current state
/// doesn't have a target state for the transition passed,
/// an ERROR message is printed.
/// </summary>
public void PerformTransition(EnemyTransition trans)
{
// Check for NullTransition before changing the current state
if (trans == EnemyTransition.NullTransition)
{
Debug.LogError("EnemyFSM ERROR: NullTransition is not allowed for a real transition");
return;
}
// Check if the currentState has the transition passed as argument
EnemyStateID id = currentState.GetOutputState(trans);
if (id == EnemyStateID.NullStateID)
{
Debug.LogError("EnemyFSM ERROR: State " + currentStateID.ToString() + " does not have a target state " +
" for transition " + trans.ToString());
return;
}
// Update the currentStateID and currentState
currentStateID = id;
foreach (EnemyFSMState state in states)
{
if (state.ID == currentStateID)
{
// Do the post processing of the state before setting the new one
currentState.DoBeforeLeaving();
currentState = state;
// Reset the state to its desired condition before it can reason or act
currentState.DoBeforeEntering();
break;
}
}
} // PerformTransition()
