67 lines
1.2 KiB
GDScript3
67 lines
1.2 KiB
GDScript3
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extends RefCounted
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class_name _HistoryBuffer
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# Maps ticks (int) to arbitrary data
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var _buffer: Dictionary = {}
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func get_snapshot(tick: int):
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if _buffer.has(tick):
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return _buffer[tick]
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else:
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return null
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func set_snapshot(tick: int, data):
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_buffer[tick] = data
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func get_buffer() -> Dictionary:
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return _buffer
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func get_closest_tick(tick: int) -> int:
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if _buffer.has(tick):
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return tick
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if _buffer.is_empty():
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return -1
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var earliest_tick = _buffer.keys().min()
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if tick < earliest_tick:
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return earliest_tick
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var latest_tick = _buffer.keys().max()
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if tick > latest_tick:
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return latest_tick
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return _buffer.keys() \
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.filter(func (key): return key < tick) \
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.max()
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func get_history(tick: int):
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var closest_tick = get_closest_tick(tick)
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return _buffer.get(closest_tick)
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func trim(earliest_tick_to_keep: int):
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var ticks := _buffer.keys()
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for tick in ticks:
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if tick < earliest_tick_to_keep:
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_buffer.erase(tick)
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func clear():
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_buffer.clear()
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func size() -> int:
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return _buffer.size()
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func is_empty() -> bool:
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return _buffer.is_empty()
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func has(tick) -> bool:
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return _buffer.has(tick)
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func ticks() -> Array:
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return _buffer.keys()
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func erase(tick):
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_buffer.erase(tick)
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