private void Tick(float dt)
{
_isDispatching = true;
for (int index = 0; index < _listeners.Count; index++)
{
SchedulerEntry entry = _listeners[index];
var status = GetStatusInPending(entry.Handler);
if (status != SchedulerEntry.EntryStatus.ToDelete) //不是待移除状态才处理
{
entry.Update(dt);
}
}
_isDispatching = false;
//deal with pendings
int count = _pendings.Count;
for (int i = 0; i < count; ++i)
{
if (_pendings[i].Status == SchedulerEntry.EntryStatus.ToInsert)
{
_pendings[i].Status = SchedulerEntry.EntryStatus.Active;
_listeners.Add(_pendings[i]);
}
else if (_pendings[i].Status == SchedulerEntry.EntryStatus.ToDelete)
{
SafeRemoveListener(_pendings[i].Handler);
_pool.DisposeObject(_pendings[i]);
}
}
_pendings.Clear();
}
private SchedulerEntry.EntryStatus GetStatusInPending(ScheduleHandler handler)
{
SchedulerEntry.EntryStatus status = SchedulerEntry.EntryStatus.Idle;
int count = _pendings.Count;
SchedulerEntry entry = null;
for (int i = count - 1; i > -1; --i)
{
entry = _pendings [i];
if (entry.Handler == handler)
{
if (entry.Status == SchedulerEntry.EntryStatus.ToInsert)
{
status = SchedulerEntry.EntryStatus.ToInsert;
break;
}
else if (entry.Status == SchedulerEntry.EntryStatus.ToDelete)
{
status = SchedulerEntry.EntryStatus.ToDelete;
break;
}
}
}
return(status);
}
public bool HasListener(ScheduleHandler handler)
{
bool bRet = false;
for (int i = 0; i < _listeners.Count; i++)
{
SchedulerEntry entry = _listeners[i];
if (entry.Handler == handler)
{
bRet = true;
break;
}
}
// when dispatching,check the toInsert,toDelete
if (_isDispatching)
{
int count = _pendings.Count;
int insertTimes = 0;
for (int i = 0; i < count; ++i)
{
if (_pendings[i].Handler == handler)
{
if (_pendings[i].Status == SchedulerEntry.EntryStatus.ToInsert)
{
insertTimes++;
if (insertTimes > 1)
{
insertTimes = 1;
}
}
else if (_pendings[i].Status == SchedulerEntry.EntryStatus.ToDelete)
{
insertTimes--;
if (insertTimes < -1)
{
insertTimes = -1;
}
}
}
}
if (bRet && (insertTimes < 0))
{
bRet = false;
}
if (!bRet && (insertTimes > 0))
{
bRet = true;
}
}
return(bRet);
}
public void RemoveListener(ScheduleHandler handler)
{
if (_isDispatching)
{
SchedulerEntry entry = _pool.GetObject();
entry.Status = SchedulerEntry.EntryStatus.ToDelete;
entry.Handler = handler;
_pendings.Add(entry);
}
else
{
SafeRemoveListener(handler);
}
}
public void AddListener(ScheduleHandler handler, float interval = 0f)
{
if (HasListener(handler))
{
return;
}
SchedulerEntry entry = _pool.GetObject();
entry.Elapsed = 0;
entry.Interval = interval;
entry.Handler = handler;
if (!_isDispatching)
{
entry.Status = SchedulerEntry.EntryStatus.Active;
_listeners.Add(entry);
}
else
{
entry.Status = SchedulerEntry.EntryStatus.ToDelete;
_pendings.Add(entry);
}
}