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https://github.com/Shu-Ying/main_plugin_farm.git
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70 lines
2.5 KiB
Python
70 lines
2.5 KiB
Python
"""离线虫害时间结算；只投影状态，不读写数据库或使用随机数。"""
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from dataclasses import replace
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from .domain import Plot, integer
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def season_duration(plot: Plot) -> int:
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base = (plot.plant.growth_seconds if plot.harvest_count == 0
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else plot.plant.regrowth_seconds)
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return max(1, (base * (80 if plot.land_level >= 2 else 100) + 99) // 100)
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def spawn_interval(plot: Plot) -> int:
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"""至少留出两小时，每半个基础生长周期才发生一次虫害。"""
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return max(7200, (season_duration(plot) + 1) // 2)
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def start_growth(plot: Plot, now: int) -> Plot:
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duration = season_duration(plot)
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return advance_plot(replace(
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plot, mature_at=integer(now + duration), pest_count=0, pest_spawned=0,
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growth_remaining=integer(duration * 100), growth_updated_at=now,
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next_pest_at=integer(now + spawn_interval(plot)), maturity_pests=0,
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), now)
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def _advance(remaining, cursor, pests, spawned, next_at, interval, now):
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while remaining:
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rate = 100 - pests * 5
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finish = integer(cursor + (remaining + rate - 1) // rate)
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if finish <= now and (next_at is None or finish <= next_at):
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return 0, finish, pests, spawned, None, finish
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end = min(now, next_at) if next_at is not None else now
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remaining -= (end - cursor) * rate
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cursor = end
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if next_at is None or cursor < next_at:
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break
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pests += 1
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spawned += 1
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next_at = integer(next_at + interval) if spawned < 3 else None
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if cursor == now:
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break
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return remaining, cursor, pests, spawned, next_at, None
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def advance_plot(plot: Plot, now: int) -> Plot:
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integer(now)
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if (plot.plant is None or plot.withered
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or plot.growth_remaining is None or not plot.growth_remaining):
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return plot
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if now < plot.growth_updated_at:
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return plot
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interval = spawn_interval(plot)
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remaining, cursor, pests, spawned, next_at, finish = _advance(
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plot.growth_remaining, plot.growth_updated_at, plot.pest_count,
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plot.pest_spawned, plot.next_pest_at, interval, now,
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)
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if finish is None:
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finish = _advance(
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remaining, cursor, pests, spawned, next_at, interval,
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integer(cursor + (remaining + 84) // 85),
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)[-1]
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return replace(
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plot, mature_at=finish, pest_count=pests, pest_spawned=spawned,
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growth_remaining=remaining, growth_updated_at=cursor,
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next_pest_at=next_at,
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maturity_pests=pests if remaining == 0 else 0,
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)
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