87 lines
3.7 KiB
GDScript
87 lines
3.7 KiB
GDScript
class_name FinancePolicy
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extends RefCounted
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## Front (表金) and hidden (裏金) funds, the World Tree rank tax and dark bank interest.
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## Values are the user-approved initial test values (decisions A09-A12, 2026-10-23).
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## The front fund keeps the existing PLAYER_CASH account; saves made before the split
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## carry no hidden fund account and are read with every Gold as front funds (A12).
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const FRONT_CASH: StringName = &"PLAYER_CASH"
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const BACK_CASH: StringName = &"BACK_CASH"
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const RANK_TAX_EXPENSE: StringName = &"RANK_TAX_EXPENSE"
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const RANK_TAX_PAYABLE: StringName = &"RANK_TAX_PAYABLE"
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const LOAN_INTEREST_EXPENSE: StringName = &"LOAN_INTEREST_EXPENSE"
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const LOAN_INTEREST_PAYABLE: StringName = &"LOAN_INTEREST_PAYABLE"
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const LOAN_LIABILITY_PREFIX := "LOAN_LIABILITY:"
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## A10: 10% of the closed day's sales (front + hidden), whole Gold rounded down.
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const RANK_TAX_PERCENT := 10
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## A11: 1% of the outstanding principal per day, whole Gold rounded down.
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const LOAN_INTEREST_PERCENT_PER_DAY := 1
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## Services of facilities with one of these tags earn hidden funds (原本: 成人施設、
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## カジノ、脅迫金、ユニット売却は裏の収益). Every other service earns front funds.
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const BACK_FUND_TAGS: Array[StringName] = [&"restricted_service", &"adult_only"]
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## Ledger categories. Accruals are expenses of the closed day; payments, top-ups and
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## the payable balances are not income or expense.
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const TOP_UP_CATEGORY: StringName = &"BACK_FUND_TOP_UP"
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const RANK_TAX_CATEGORY: StringName = &"RANK_TAX"
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const RANK_TAX_PAYMENT_CATEGORY: StringName = &"RANK_TAX_PAYMENT"
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const LOAN_INTEREST_CATEGORY: StringName = &"LOAN_INTEREST"
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const LOAN_INTEREST_PAYMENT_CATEGORY: StringName = &"LOAN_INTEREST_PAYMENT"
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const NON_PROFIT_CATEGORIES: Array[StringName] = [TOP_UP_CATEGORY, RANK_TAX_PAYMENT_CATEGORY, LOAN_INTEREST_PAYMENT_CATEGORY]
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static func rank_tax(sales: int) -> int:
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return maxi(sales, 0) / 100 * RANK_TAX_PERCENT + maxi(sales, 0) % 100 * RANK_TAX_PERCENT / 100
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static func loan_interest(outstanding_principal: int) -> int:
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return maxi(outstanding_principal, 0) / 100 * LOAN_INTEREST_PERCENT_PER_DAY \
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+ maxi(outstanding_principal, 0) % 100 * LOAN_INTEREST_PERCENT_PER_DAY / 100
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static func is_back_fund_service(tags: Array) -> bool:
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for tag: StringName in BACK_FUND_TAGS:
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if tag in tags:
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return true
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return false
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## Accounts of the split funds. A save without BACK_CASH predates the split and must
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## not hold any of the other accounts either; they are then created empty (A12).
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## Any other partial or incompatible set is rejected.
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static func prepare_accounts(economy: EconomyService) -> bool:
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if economy == null or not economy.has_account(FRONT_CASH) or economy.account_allows_negative(FRONT_CASH):
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return false
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var expected := {
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BACK_CASH: false, RANK_TAX_EXPENSE: false, LOAN_INTEREST_EXPENSE: false,
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RANK_TAX_PAYABLE: true, LOAN_INTEREST_PAYABLE: true,
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}
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if not economy.has_account(BACK_CASH):
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for account_id: StringName in expected:
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if economy.has_account(account_id):
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return false
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for account_id: StringName in expected:
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if not economy.register_account(account_id, bool(expected[account_id])):
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return false
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return true
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for account_id: StringName in expected:
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if not economy.has_account(account_id) \
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or economy.account_allows_negative(account_id) != bool(expected[account_id]):
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return false
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return true
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static func outstanding_principal(economy: EconomyService) -> int:
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var total := 0
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for account: Dictionary in economy.get_accounts():
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if String(account[&"account_id"]).begins_with(LOAN_LIABILITY_PREFIX):
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total += -int(account[&"balance"])
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return total
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static func available_funds(economy: EconomyService) -> int:
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return economy.get_balance(FRONT_CASH) + economy.get_balance(BACK_CASH)
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