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Rehost annual bond issue service branch

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This commit is contained in:
Jan Petykiewicz 2026-04-18 01:32:57 -07:00
commit c5c14d71b0
5 changed files with 240 additions and 8 deletions
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12
crates/rrt-runtime/src/runtime.rs
View file

@ -3053,6 +3053,18 @@ pub fn runtime_company_average_live_bond_coupon(
Some(weighted_coupon_sum / total_principal as f64)
}
pub fn runtime_company_bond_interest_rate_quote_f64(
state: &RuntimeState,
company_id: u32,
_principal: u32,
_years_to_maturity: u32,
) -> Option<f64> {
let credit_rating = runtime_company_credit_rating(state, company_id)? as f64;
let prime_rate_percent = runtime_company_prime_rate(state, company_id)? as f64;
let quote = (prime_rate_percent + (10.0 - credit_rating)) / 100.0;
quote.is_finite().then_some(quote)
}
pub fn runtime_world_annual_finance_mode_active(state: &RuntimeState) -> Option<bool> {
Some(state.world_restore.partial_year_progress_raw_u8? == 0x0c)
}

217
crates/rrt-runtime/src/step.rs
View file

@ -17,6 +17,7 @@ use crate::{
RUNTIME_COMPANY_STAT_SLOT_CURRENT_CASH, RUNTIME_COMPANY_YEAR_STAT_FAMILY_SPAN,
};
use crate::runtime::{
runtime_company_bond_interest_rate_quote_f64,
runtime_company_support_adjusted_share_price_scalar_with_pressure_f64,
runtime_round_f64_to_i64,
};
@ -436,6 +437,95 @@ fn service_company_annual_finance_policy(
mutated_company_ids.insert(company_id);
}
}
crate::RuntimeCompanyAnnualFinancePolicyAction::BondIssue => {
let mut mutated = false;
let Some(bond_state) =
crate::runtime::runtime_company_annual_bond_policy_state(state, company_id)
else {
continue;
};
if !bond_state.eligible_for_bond_issue_branch {
continue;
}
let Some(principal) = bond_state.issue_principal_step else {
continue;
};
let Some(years_to_maturity) = bond_state.proposed_issue_years_to_maturity else {
continue;
};
let Some(quote_rate) = runtime_company_bond_interest_rate_quote_f64(
state,
company_id,
principal,
years_to_maturity,
) else {
continue;
};
mutated |= service_post_company_stat_delta(
state,
company_id,
0x0c,
(principal as f64) * COMPANY_STOCK_AND_BOND_CAPITAL_POST_SCALE,
true,
);
mutated |= service_post_company_stat_delta(
state,
company_id,
0x12,
-(principal as f64),
false,
);
mutated |= service_post_company_stat_delta(
state,
company_id,
RUNTIME_COMPANY_STAT_SLOT_CURRENT_CASH,
principal as f64,
false,
);
let Some(market_state) = state
.service_state
.company_market_state
.get_mut(&company_id)
else {
continue;
};
let slot_index = market_state.bond_count as u32;
if market_state.bond_count == u8::MAX {
continue;
}
market_state.live_bond_slots.push(crate::RuntimeCompanyBondSlot {
slot_index,
principal,
coupon_rate_raw_u32: (quote_rate as f32).to_bits(),
});
market_state.bond_count = market_state.bond_count.saturating_add(1);
market_state.largest_live_bond_principal = Some(
market_state
.largest_live_bond_principal
.unwrap_or(0)
.max(principal),
);
let highest_coupon_live_principal = market_state
.live_bond_slots
.iter()
.filter_map(|slot| {
let coupon = f32::from_bits(slot.coupon_rate_raw_u32) as f64;
coupon.is_finite().then_some((coupon, slot.principal))
})
.max_by(|left, right| {
left.0
.partial_cmp(&right.0)
.unwrap_or(std::cmp::Ordering::Equal)
})
.map(|(_, principal)| principal);
market_state.highest_coupon_live_bond_principal = highest_coupon_live_principal;
if mutated {
applied_effect_count += 1;
mutated_company_ids.insert(company_id);
}
}
crate::RuntimeCompanyAnnualFinancePolicyAction::StockRepurchase => {
let mut mutated = false;
for _ in 0..128 {
@ -2735,6 +2825,133 @@ mod tests {
);
}
#[test]
fn periodic_boundary_applies_bond_issue_from_annual_finance_policy() {
let mut year_stat_family_qword_bits = vec![
0u64;
(crate::RUNTIME_COMPANY_STAT_SLOT_COUNT * crate::RUNTIME_COMPANY_YEAR_STAT_FAMILY_SPAN)
as usize
];
year_stat_family_qword_bits[(crate::RUNTIME_COMPANY_STAT_SLOT_CURRENT_CASH
* crate::RUNTIME_COMPANY_YEAR_STAT_FAMILY_SPAN)
as usize] = (-400_000.0f64).to_bits();
let mut state = RuntimeState {
calendar: crate::CalendarPoint {
year: 1845,
month_slot: 0,
phase_slot: 0,
tick_slot: 0,
},
world_flags: BTreeMap::new(),
save_profile: crate::RuntimeSaveProfileState::default(),
world_restore: crate::RuntimeWorldRestoreState {
packed_year_word_raw_u16: Some(1845),
partial_year_progress_raw_u8: Some(0x0c),
bond_issue_and_repayment_policy_raw_u8: Some(0),
bond_issue_and_repayment_allowed: Some(true),
stock_issue_and_buyback_policy_raw_u8: Some(0),
stock_issue_and_buyback_allowed: Some(true),
bankruptcy_policy_raw_u8: Some(0),
bankruptcy_allowed: Some(true),
..crate::RuntimeWorldRestoreState::default()
},
metadata: BTreeMap::new(),
companies: vec![crate::RuntimeCompany {
company_id: 24,
controller_kind: crate::RuntimeCompanyControllerKind::Unknown,
current_cash: 0,
debt: 0,
credit_rating_score: Some(6),
prime_rate: Some(5),
track_piece_counts: crate::RuntimeTrackPieceCounts::default(),
active: true,
available_track_laying_capacity: None,
linked_chairman_profile_id: None,
book_value_per_share: 0,
investor_confidence: 0,
management_attitude: 0,
takeover_cooldown_year: None,
merger_cooldown_year: None,
}],
selected_company_id: Some(24),
players: Vec::new(),
selected_player_id: None,
chairman_profiles: Vec::new(),
selected_chairman_profile_id: None,
trains: Vec::new(),
locomotive_catalog: Vec::new(),
cargo_catalog: Vec::new(),
territories: Vec::new(),
company_territory_track_piece_counts: Vec::new(),
company_territory_access: Vec::new(),
packed_event_collection: None,
event_runtime_records: Vec::new(),
candidate_availability: BTreeMap::new(),
named_locomotive_availability: BTreeMap::new(),
named_locomotive_cost: BTreeMap::new(),
all_cargo_price_override: None,
named_cargo_price_overrides: BTreeMap::new(),
all_cargo_production_override: None,
factory_cargo_production_override: None,
farm_mine_cargo_production_override: None,
named_cargo_production_overrides: BTreeMap::new(),
cargo_production_overrides: BTreeMap::new(),
world_runtime_variables: BTreeMap::new(),
company_runtime_variables: BTreeMap::new(),
player_runtime_variables: BTreeMap::new(),
territory_runtime_variables: BTreeMap::new(),
world_scalar_overrides: BTreeMap::new(),
special_conditions: BTreeMap::new(),
service_state: crate::RuntimeServiceState {
company_market_state: BTreeMap::from([(
24,
crate::RuntimeCompanyMarketState {
outstanding_shares: 10_000,
founding_year: 1840,
year_stat_family_qword_bits,
..crate::RuntimeCompanyMarketState::default()
},
)]),
..crate::RuntimeServiceState::default()
},
};
let result = execute_step_command(&mut state, &StepCommand::ServicePeriodicBoundary)
.expect("periodic boundary should apply annual bond issue policy");
assert_eq!(
state.service_state.annual_finance_last_actions.get(&24),
Some(&crate::RuntimeCompanyAnnualFinancePolicyAction::BondIssue)
);
assert_eq!(state.companies[0].current_cash, 100_000);
assert_eq!(state.service_state.company_market_state[&24].bond_count, 1);
assert_eq!(
state.service_state.company_market_state[&24].largest_live_bond_principal,
Some(500_000)
);
assert_eq!(
state.service_state.company_market_state[&24].highest_coupon_live_bond_principal,
Some(500_000)
);
assert_eq!(
state.service_state.company_market_state[&24].live_bond_slots,
vec![crate::RuntimeCompanyBondSlot {
slot_index: 0,
principal: 500_000,
coupon_rate_raw_u32: 0.09f32.to_bits(),
}]
);
assert!(
result
.service_events
.iter()
.any(|event| event.kind == "annual_finance_policy"
&& event.applied_effect_count == 1
&& event.mutated_company_ids == vec![24])
);
}
#[test]
fn applies_company_effects_for_specific_targets() {
let mut state = RuntimeState {