Syplheed-Reborn/crates/sylpheed-formats/tests/game_data_disc.rs

//! Real-disc tests for the record-table game-data loaders. Skipped without
//! `SYLPHEED_DISC`.
//!
//! These pin the values that only became readable once the loaders moved off the
//! string-pool reader (`docs/re/idxd-legacy-reader-audit.md`): the per-hardpoint
//! stats, the per-difficulty scoring and the per-phase play space. A regression
//! to the flat reader collapses each of them to one answer and fails here.

use std::collections::BTreeSet;

use sylpheed_formats::game_data::{self as gd, Difficulty, HardpointKind};
use sylpheed_formats::PakArchive;

fn main_pak() -> Option<PakArchive> {
    let disc = std::env::var("SYLPHEED_DISC").ok()?;
    PakArchive::open(format!("{disc}/dat/GP_MAIN_GAME_E.pak")).ok()
}

fn skip() {
    eprintln!("SKIP: set SYLPHEED_DISC");
}

/// The player's craft carries 63 `Turret_NNN` records — one per equippable
/// weapon — each with its own `HP`, while `StructureCount.TurretCount` says 4.
/// The flat reader had one `HP` slot for the whole object.
#[test]
fn craft_hardpoints_are_per_record() {
    let Some(pak) = main_pak() else { return skip() };
    let units = gd::load_units(&pak);
    let saber = units
        .iter()
        .find(|u| u.id.as_deref() == Some("UN_f001_TCAF_DeltaSaber_T"))
        .expect("Delta Saber present");
    assert_eq!(saber.hp, Some(1000.0), "hull HP");
    assert_eq!(saber.turret_count, Some(4), "StructureCount.TurretCount");
    let turrets: Vec<_> = saber
        .hardpoints
        .iter()
        .filter(|h| h.kind == HardpointKind::Turret)
        .collect();
    assert_eq!(turrets.len(), 63, "Turret_NNN records");
    assert!(turrets.iter().all(|t| t.hp == Some(100.0)), "every mount has HP 100");
    // Each mount names its own weapon model, `rou_f001_wep_NN`.
    let mount = turrets.iter().find(|t| t.index == 33).expect("Turret_033");
    assert_eq!(mount.model.as_deref(), Some("rou_f001_wep_33"));
    assert_eq!(mount.id.as_deref(), Some("Turret_033"));
}

/// A capital ship's components each carry their own HP — five distinct values on
/// the SD-Battleship, where the flat reader returned only the hull's 100000.
#[test]
fn vessel_hardpoints_are_per_record() {
    let Some(pak) = main_pak() else { return skip() };
    let vessels = gd::load_vessels(&pak);
    let bs = vessels
        .iter()
        .find(|v| v.id.as_deref() == Some("UN_e101_ADAN_SDBattleship"))
        .expect("SD-Battleship present");
    assert_eq!(bs.hp, Some(100000.0));
    let hp_of = |kind: HardpointKind, idx: u32| {
        bs.hardpoints
            .iter()
            .find(|h| h.kind == kind && h.index == idx)
            .and_then(|h| h.hp)
    };
    assert_eq!(hp_of(HardpointKind::Bridge, 0), Some(10000.0));
    assert_eq!(hp_of(HardpointKind::Thruster, 0), Some(20000.0));
    assert_eq!(hp_of(HardpointKind::ShieldGenerator, 0), Some(5000.0));
    assert_eq!(hp_of(HardpointKind::Hatch, 0), Some(100.0));
    // Distinct HP values across the ship's components.
    let distinct: BTreeSet<String> = bs
        .hardpoints
        .iter()
        .filter_map(|h| h.hp.map(|v| format!("{v}")))
        .collect();
    assert!(distinct.len() >= 4, "distinct component HP values: {distinct:?}");
    // A main gun names the weapon it fires and the shield generator its share.
    let asgun = bs
        .hardpoints
        .iter()
        .find(|h| h.weapon_id.as_deref() == Some("Weapon_ADAN_Ship_ASGun"))
        .expect("an anti-ship gun");
    assert_eq!(asgun.hp, Some(1500.0));
    assert_eq!(
        bs.hardpoints
            .iter()
            .find(|h| h.kind == HardpointKind::ShieldGenerator)
            .and_then(|h| h.power_ratio),
        Some(0.25)
    );
    // The launch bay names the squadron it scrambles.
    assert_eq!(
        bs.hardpoints
            .iter()
            .find(|h| h.kind == HardpointKind::Hatch)
            .and_then(|h| h.squadron_id.clone()),
        Some("Squadron_Test2".to_string())
    );
}

/// `MainMissionBonus` lives in `Score_Easy` / `Score_Normal` / `Score_Hard`, one
/// value each. The flat reader returned the Easy one for every mission.
#[test]
fn main_mission_bonus_is_per_difficulty() {
    let Some(pak) = main_pak() else { return skip() };
    let cfgs = gd::load_player_configs(&pak);
    assert_eq!(cfgs.len(), 24);
    let mut distinct3 = 0;
    let mut doubling = 0;
    let mut all_equal = 0;
    for c in &cfgs {
        let (e, n, h) = (
            c.score.easy.main_mission_bonus,
            c.score.normal.main_mission_bonus,
            c.score.hard.main_mission_bonus,
        );
        let set: BTreeSet<_> = [e, n, h].into_iter().flatten().collect();
        match set.len() {
            3 => distinct3 += 1,
            1 => all_equal += 1,
            _ => {}
        }
        if let (Some(e), Some(n), Some(h)) = (e, n, h) {
            if n == 2 * e && h == 4 * e {
                doubling += 1;
            }
        }
    }
    eprintln!("MainMissionBonus: 3-distinct {distinct3}/24, all-equal {all_equal}, doubling {doubling}");
    assert_eq!(distinct3, PIN_BONUS_DISTINCT3);
    assert_eq!(doubling, PIN_BONUS_DOUBLING);
    // The first config's own numbers.
    let c = &cfgs[0];
    assert_eq!(c.score.easy.main_mission_bonus, PIN_C0_EASY);
    assert_eq!(c.score.normal.main_mission_bonus, PIN_C0_NORMAL);
    assert_eq!(c.score.hard.main_mission_bonus, PIN_C0_HARD);
}

/// The rank thresholds repeat identically across the three `Score_*` records —
/// so the one flat answer happened to be right, but only by coincidence.
#[test]
fn rank_scores_repeat_across_difficulties() {
    let Some(pak) = main_pak() else { return skip() };
    let cfgs = gd::load_player_configs(&pak);
    let mut identical = 0;
    for c in &cfgs {
        let row = |s: &gd::ScoreRules| {
            (s.rank_score_s, s.rank_score_a, s.rank_score_b, s.rank_score_c, s.rank_score_d)
        };
        if row(&c.score.easy) == row(&c.score.normal) && row(&c.score.normal) == row(&c.score.hard) {
            identical += 1;
        }
    }
    eprintln!("rank scores identical across difficulties: {identical}/{}", cfgs.len());
    assert_eq!(identical, cfgs.len());
    assert_eq!(cfgs[0].score.normal.rank_score_s, Some(10000));
    assert_eq!(cfgs[0].score.normal.rank_score_d, Some(1000));
    // The difficulty scaling that *is* per record.
    assert_eq!(cfgs[0].difficulty_f32(Difficulty::Easy, "DamageAdjustment"), PIN_EASY_DMG);
    assert_eq!(cfgs[0].difficulty_f32(Difficulty::Hard, "ShieldDamageAdjustment"), PIN_HARD_SHIELD);
}

/// `SpaceSize` lives in `Phase_1` / `Phase_2` / `Phase_3`, one value each.
#[test]
fn space_size_is_per_phase() {
    let Some(pak) = main_pak() else { return skip() };
    let cfgs = gd::load_player_configs(&pak);
    let mut varying = 0;
    let mut p1_250k = 0;
    for c in &cfgs {
        assert_eq!(c.phases.len(), 3, "every mission has three Phase_N records");
        let sizes: Vec<Option<f32>> = c.phases.iter().map(|p| p.space_size).collect();
        let shapes: BTreeSet<String> = sizes.iter().map(|v| format!("{v:?}")).collect();
        if shapes.len() > 1 {
            varying += 1;
        }
        if sizes[0] == Some(250000.0) {
            p1_250k += 1;
        }
    }
    eprintln!("SpaceSize: varying across phases {varying}/24, phase 1 = 250000 in {p1_250k}");
    assert_eq!(varying, PIN_SPACE_VARYING);
    assert_eq!(p1_250k, PIN_SPACE_P1_250K);
    let c = &cfgs[0];
    assert_eq!(c.space_size(1), PIN_C0_SPACE1);
    assert_eq!(c.space_size(2), PIN_C0_SPACE2);
    assert_eq!(c.space_size(3), PIN_C0_SPACE3);
}

/// Fields the string-pool reader returned `None` for now have values, disc-wide.
#[test]
fn previously_unreadable_stats_are_populated() {
    let Some(pak) = main_pak() else { return skip() };
    let units = gd::load_units(&pak);
    let vessels = gd::load_vessels(&pak);
    let n = |f: fn(&gd::CraftUnit) -> Option<f32>| units.iter().filter(|u| f(u).is_some()).count();
    eprintln!(
        "units={} fcs={} shield_ratio={} cruise={} maxvel={} accel={} decel={} shield_max={}",
        units.len(),
        n(|u| u.fcs_range),
        n(|u| u.shield_ratio),
        n(|u| u.cruising_velocity),
        n(|u| u.maximum_velocity),
        n(|u| u.acceleration),
        n(|u| u.deceleration),
        n(|u| u.shield_max),
    );
    for (label, count) in [
        ("fcs_range", n(|u| u.fcs_range)),
        ("shield_ratio", n(|u| u.shield_ratio)),
        ("cruising_velocity", n(|u| u.cruising_velocity)),
        ("maximum_velocity", n(|u| u.maximum_velocity)),
        ("acceleration", n(|u| u.acceleration)),
        ("deceleration", n(|u| u.deceleration)),
    ] {
        assert_eq!(count, units.len(), "{label} set on every unit");
    }
    assert!(vessels.iter().all(|v| v.fcs_range.is_some() && v.shield_ratio.is_some()));
    // Hardpoint HP is readable for every vessel component.
    let hp_missing = vessels
        .iter()
        .flat_map(|v| &v.hardpoints)
        .filter(|h| h.hp.is_none())
        .count();
    assert_eq!(hp_missing, 0);
    let total_hardpoints: usize = vessels.iter().map(|v| v.hardpoints.len()).sum();
    eprintln!("vessel hardpoints: {total_hardpoints}");
    assert_eq!(total_hardpoints, PIN_VESSEL_HARDPOINTS);
}

/// The launcher and its projectile are two records with two ids; the tracer has a
/// third `Interval`.
#[test]
fn weapon_launcher_and_shell_stay_separate() {
    let Some(pak) = main_pak() else { return skip() };
    let ws = gd::load_weapons(&pak);
    assert_eq!(ws.len(), 131);
    let differing = ws
        .iter()
        .filter(|w| w.id.is_some() && w.shell_id.is_some() && w.id != w.shell_id)
        .count();
    eprintln!("weapons whose shell id differs from the launcher id: {differing}/{}", ws.len());
    assert_eq!(differing, PIN_WEAPON_SHELL_IDS);
    // A player missile the corpus quotes through the flat reader — the launcher
    // fields agree, and `MaximumRange` (a `Shell` field) reads the same.
    let m26 = ws
        .iter()
        .find(|w| w.id.as_deref() == Some("Weapon_DSaber_P_wep_26_Missile"))
        .expect("Weapon_DSaber_P_wep_26_Missile is in GP_MAIN_GAME_E.pak, not the hangar pak");
    assert_eq!(m26.target_type.as_deref(), Some("Vessel,Craft"));
    assert_eq!(m26.loading_count, Some(144));
    assert_eq!(m26.interval, Some(3.0));
    assert_eq!(m26.mass, Some(0.77));
    assert_eq!(m26.trigger_shot_count, Some(12));
    assert_eq!(m26.max_range, Some(10000.0));

    let with_wake = ws.iter().filter(|w| w.records.record("ShellWake").is_some()).count();
    eprintln!("weapons with a ShellWake record: {with_wake}");
    assert_eq!(with_wake, PIN_WEAPON_WAKE);
    // `Power` is a `Shell` field: every weapon but one has it.
    let no_power: Vec<&str> =
        ws.iter().filter(|w| w.power.is_none()).filter_map(|w| w.id.as_deref()).collect();
    assert_eq!(no_power, ["Weapon_NULL"], "only the placeholder weapon has no Shell.Power");
}

/// `RecordSet::everywhere` is the API that answers "which record did that come
/// from" — the question the flat map could not express.
#[test]
fn everywhere_enumerates_the_records_that_define_a_field() {
    let Some(pak) = main_pak() else { return skip() };
    let vessels = gd::load_vessels(&pak);
    let bs = vessels
        .iter()
        .find(|v| v.id.as_deref() == Some("UN_e101_ADAN_SDBattleship"))
        .unwrap();
    let hps = bs.records.everywhere("HP");
    eprintln!("SDBattleship records defining HP: {}", hps.len());
    assert_eq!(hps.len(), PIN_BS_HP_RECORDS);
    assert!(hps.iter().any(|(r, v)| *r == "Generic" && *v == "100000.0"));
    assert!(hps.iter().any(|(r, _)| r.starts_with("Turret_")));
}

// Pinned measurements over `GP_MAIN_GAME_E.pak`.

/// 18 of the 24 missions pay a different main-objective bonus per difficulty;
/// the other 6 pay 0 at every difficulty.
const PIN_BONUS_DISTINCT3: usize = 18;
/// …and in all 24 the ratio is easy : normal : hard = 1 : 2 : 4.
const PIN_BONUS_DOUBLING: usize = 24;
const PIN_C0_EASY: Option<i64> = Some(1000);
const PIN_C0_NORMAL: Option<i64> = Some(2000);
const PIN_C0_HARD: Option<i64> = Some(4000);
const PIN_EASY_DMG: Option<f32> = Some(1.5);
const PIN_HARD_SHIELD: Option<f32> = Some(0.5);
/// `SpaceSize` is stored per phase, but only **one** of the 24 missions actually
/// varies it across its phases (250000 → 100000 → 100000). The other 23 repeat
/// one value: 500000 once, 100000 eighteen times, 50000 four times.
const PIN_SPACE_VARYING: usize = 1;
const PIN_SPACE_P1_250K: usize = 1;
const PIN_C0_SPACE1: Option<f32> = Some(250000.0);
const PIN_C0_SPACE2: Option<f32> = Some(100000.0);
const PIN_C0_SPACE3: Option<f32> = Some(100000.0);
/// Destructible components across the 23 capital ships, each with its own HP.
const PIN_VESSEL_HARDPOINTS: usize = 418;
/// Every weapon's projectile carries an id of its own (`Shell_…` vs `Weapon_…`).
const PIN_WEAPON_SHELL_IDS: usize = 131;
const PIN_WEAPON_WAKE: usize = 40;
/// Records of the SD-Battleship that define an `HP`: the hull plus 36 components.
const PIN_BS_HP_RECORDS: usize = 37;