retoorandClaude Sonnet 5
34f76aad65
Every purchase/upgrade path (new and pre-existing) is now race-safe against concurrent requests via atomic conditional SQL updates. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
52 lines
1.7 KiB
Python
52 lines
1.7 KiB
Python
# retoor <retoor@molodetz.nl>
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from __future__ import annotations
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import random
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from .. import economy
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from .common import GameError, _lvl, conditional_update_farm
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from .farm import ensure_farm, get_farm
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INFRA_COLUMN = {i.key: f"infra_{i.key}" for i in economy.INFRASTRUCTURE}
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def buy_infrastructure(user: dict, key: str) -> dict:
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infra = economy.infra_for(key)
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if not infra:
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raise GameError("Unknown infrastructure.")
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farm = ensure_farm(user["uid"])
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column = INFRA_COLUMN[infra.key]
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rows = conditional_update_farm(
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farm["uid"],
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set_clause=f"coins = coins - :cost, {column} = 1",
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where_clause=(
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f"COALESCE({column}, 0) = 0 AND coins >= :cost "
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f"AND COALESCE(prestige, 0) >= :min_prestige"
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),
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params={"cost": infra.cost, "min_prestige": infra.min_prestige},
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)
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if rows == 0:
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farm = get_farm(user["uid"])
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if _lvl(farm, column):
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raise GameError("You already own that infrastructure.")
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if _lvl(farm, "prestige") < infra.min_prestige:
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raise GameError(f"{infra.name} requires prestige {infra.min_prestige}.")
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raise GameError("Not enough coins for that infrastructure.")
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return {"key": infra.key, "spent": infra.cost}
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def owns_infrastructure(farm: dict, key: str) -> bool:
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column = INFRA_COLUMN.get(key)
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return bool(column and _lvl(farm, column))
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def roll_canary(coins_gain: int, plant_cost: int) -> int:
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roll = random.random()
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if roll < economy.CANARY_DOUBLE_CHANCE:
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return coins_gain * 2
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if roll < economy.CANARY_DOUBLE_CHANCE + economy.CANARY_FAIL_CHANCE:
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return min(coins_gain, plant_cost)
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return coins_gain
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