59 lines
1.8 KiB
GDScript3
59 lines
1.8 KiB
GDScript3
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static func take_last_with_time_(
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duration : float,
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scheduler : SchedulerBase = null
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) -> Callable:
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var take_last_with_time = func(source : Observable) -> Observable:
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# """Returns elements within the specified duration from the end
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# of the observable source sequence.
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#
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# Example:
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# >>> var res = take_last_with_time.call(source)
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#
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# This operator accumulates a queue with a length enough to store
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# elements received during the initial duration window. As more
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# elements are received, elements older than the specified
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# duration are taken from the queue and produced on the result
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# sequence. This causes elements to be delayed with duration.
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#
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# Args:
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# duration: Duration for taking elements from the end of the
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# sequence.
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#
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# Returns:
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# An observable sequence with the elements taken during the
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# specified duration from the end of the source sequence.
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# """
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var subscribe = func(
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observer : ObserverBase,
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scheduler_ : SchedulerBase = null
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) -> DisposableBase:
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var _scheduler : SchedulerBase
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if scheduler != null: _scheduler = scheduler
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elif scheduler_ != null: _scheduler = scheduler_
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else: _scheduler = SceneTreeTimeoutScheduler.singleton()
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var q : Array[Dictionary] = []
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var on_next = func(x):
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var now = _scheduler.now()
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q.append({"interval": now, "value": x})
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while not q.is_empty() and now - q[0]["interval"] >= duration:
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q.pop_front()
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var on_completed = func():
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var now = _scheduler.now()
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while not q.is_empty():
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var _next = q.pop_front()
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if now - _next["interval"] <= duration:
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observer.on_next(_next["value"])
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observer.on_completed()
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return source.subscribe(
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on_next, observer.on_error, on_completed,
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scheduler_
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)
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return Observable.new(subscribe)
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return take_last_with_time
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