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spiel/spiel/triggers.py

46 lines
1.1 KiB
Python

from __future__ import annotations
from dataclasses import dataclass
from functools import cached_property
from time import monotonic
from typing import Iterator
@dataclass(frozen=True)
class Triggers:
times: tuple[float, ...]
now: float
def __post_init__(self) -> None:
if not self.times:
raise ValueError("times must not be empty")
if self.now < self.times[-1]:
raise ValueError(f"now {self.now} must be later than the last time {self.times[-1]}")
@classmethod
def new(self) -> Triggers:
now = monotonic()
return Triggers(now=now, times=(now,))
def __len__(self) -> int:
return len(self.times)
def __getitem__(self, idx: int) -> float:
return self.times[idx]
def __iter__(self) -> Iterator[float]:
return iter(self.times)
@cached_property
def time_since_last_trigger(self) -> float:
return self.now - self.times[-1]
@cached_property
def time_since_first_trigger(self) -> float:
return self.now - self.times[0]
@cached_property
def triggered(self) -> bool:
return len(self) > 1