File size: 666 Bytes
3831e97 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | """Pricing helpers + arrival interval utility used by spawn pacing."""
from __future__ import annotations
import random
def wholesale(retail: float, factor: float = 0.4) -> int:
return max(1, int(round(float(retail) * factor)))
def margin(retail: float, factor: float = 0.4) -> int:
return int(retail) - wholesale(retail, factor)
def arrival_interval(base: float, pace: float = 1.0, jitter: float = 0.15, rng: random.Random | None = None) -> float:
"""Seconds until next arrival; pace multiplies base, jitter is fractional."""
r = rng or random.Random(0)
j = 1.0 + r.uniform(-jitter, jitter)
return max(0.5, float(base) * float(pace) * j)
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