twgame-core 0.9.0

use twsnap::time::Duration;

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct FinishTee {
    // TODO: no allocation
    pub name: String,
    pub time: Duration,
}

impl FinishTee {
    pub fn new_from_str(name: &str, time: Duration) -> Self {
        // TODO: stack string somehow
        // let mut n = [0u8; 16];
        // name.bytes().zip(n.iter_mut()).for_each(|(b, ptr)| *ptr = b);
        Self {
            name: name.to_owned(),
            time,
        }
    }
}

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct FinishTeam {
    pub team: i32,
    pub names: Vec<String>,
    pub time: Duration,
}

#[derive(Clone, Debug)]
pub struct SaveTeam {
    buf: String,
}

impl SaveTeam {
    pub fn compat_eq(&self, expected_compat: &Self) -> bool {
        let mut got = self.buf.split('\n');
        let mut expected = expected_compat.buf.split('\n');

        let (g, e) = match (got.next(), expected.next()) {
            (Some(g), Some(e)) => (g, e),
            (None, None) => return true,
            _ => return false,
        };
        SaveTeam::compare_variables("header", 0, g, e, &TEAM_DESC);
        let (g_tees, g_switchers) = SaveTeam::parse_head(g);
        let (e_tees, e_switchers) = SaveTeam::parse_head(e);
        if g_tees != e_tees || g_switchers != e_switchers {
            return false;
        }
        for _ in 0..g_tees {
            let g = got.next().unwrap_or("");
            let e = expected.next().unwrap_or("");
            if !SaveTeam::are_tees_same_compat(g, e) {
                return false;
            }
        }
        for _ in 0..g_switchers {
            let g = got.next().unwrap_or("");
            let e = expected.next().unwrap_or("");
            if !SaveTeam::are_switchers_same_compat(g, e) {
                return false;
            }
        }
        true
    }
}

impl SaveTeam {
    pub fn buf(&self) -> &str {
        &self.buf
    }
}

#[derive(Clone, Debug)]
pub enum DatabaseWrite {
    FinishTee(FinishTee),
    FinishTeam(FinishTeam),
    // TODO: send out and receive TeamId
    Save(i32, SaveTeam),
    Load(i32),
}

#[derive(Clone, Debug, PartialEq, Eq)]
pub enum Finishes {
    FinishTee(FinishTee),
    // team_id and tees
    FinishTeam(FinishTeam),
}

const TEAM_DESC: [&str; 5] = [
    "m_TeamState",
    "m_MembersCount",
    "m_HighestSwitchNumber",
    "m_TeamLocked",
    "m_Practice",
];

const TEE_DESC: [&str; 115] = [
    "m_aName",
    "m_Alive",
    "m_Paused",
    "m_NeededFaketuning",
    "m_TeeFinished",
    "m_IsSolo",
    "m_aWeapons[0].m_AmmoRegenStart",
    "m_aWeapons[0].m_Ammo",
    "m_aWeapons[0].m_Ammocost",
    "m_aWeapons[0].m_Got",
    "m_aWeapons[1].m_AmmoRegenStart",
    "m_aWeapons[1].m_Ammo",
    "m_aWeapons[1].m_Ammocost",
    "m_aWeapons[1].m_Got",
    "m_aWeapons[2].m_AmmoRegenStart",
    "m_aWeapons[2].m_Ammo",
    "m_aWeapons[2].m_Ammocost",
    "m_aWeapons[2].m_Got",
    "m_aWeapons[3].m_AmmoRegenStart",
    "m_aWeapons[3].m_Ammo",
    "m_aWeapons[3].m_Ammocost",
    "m_aWeapons[3].m_Got",
    "m_aWeapons[4].m_AmmoRegenStart",
    "m_aWeapons[4].m_Ammo",
    "m_aWeapons[4].m_Ammocost",
    "m_aWeapons[4].m_Got",
    "m_aWeapons[5].m_AmmoRegenStart",
    "m_aWeapons[5].m_Ammo",
    "m_aWeapons[5].m_Ammocost",
    "m_aWeapons[5].m_Got",
    "m_LastWeapon",
    "m_QueuedWeapon",
    // tee states
    "m_EndlessJump",
    "m_Jetpack",
    "m_NinjaJetpack",
    "m_FreezeTime",
    "m_FreezeStart",
    "m_DeepFrozen",
    "m_EndlessHook",
    "m_DDRaceState",
    "m_HitDisabledFlags",
    "m_CollisionEnabled",
    "m_TuneZone",
    "m_TuneZoneOld",
    "m_HookHitEnabled",
    "m_Time",
    "(int)m_Pos.x",
    "(int)m_Pos.y",
    "(int)m_PrevPos.x",
    "(int)m_PrevPos.y",
    "m_TeleCheckpoint",
    "m_LastPenalty",
    "(int)m_CorePos.x",
    "(int)m_CorePos.y",
    "m_Vel.x",
    "m_Vel.y",
    "m_ActiveWeapon",
    "m_Jumped",
    "m_JumpedTotal",
    "m_Jumps",
    "(int)m_HookPos.x",
    "(int)m_HookPos.y",
    "m_HookDir.x",
    "m_HookDir.y",
    "(int)m_HookTeleBase.x",
    "(int)m_HookTeleBase.y",
    "m_HookTick",
    "m_HookState",
    "m_TimeCpBroadcastEndTime",
    "m_LastTimeCp",
    "m_LastTimeCpBroadcasted",
    "m_aCurrentTimeCp[0]",
    "m_aCurrentTimeCp[1]",
    "m_aCurrentTimeCp[2]",
    "m_aCurrentTimeCp[3]",
    "m_aCurrentTimeCp[4]",
    "m_aCurrentTimeCp[5]",
    "m_aCurrentTimeCp[6]",
    "m_aCurrentTimeCp[7]",
    "m_aCurrentTimeCp[8]",
    "m_aCurrentTimeCp[9]",
    "m_aCurrentTimeCp[10]",
    "m_aCurrentTimeCp[11]",
    "m_aCurrentTimeCp[12]",
    "m_aCurrentTimeCp[13]",
    "m_aCurrentTimeCp[14]",
    "m_aCurrentTimeCp[15]",
    "m_aCurrentTimeCp[16]",
    "m_aCurrentTimeCp[17]",
    "m_aCurrentTimeCp[18]",
    "m_aCurrentTimeCp[19]",
    "m_aCurrentTimeCp[20]",
    "m_aCurrentTimeCp[21]",
    "m_aCurrentTimeCp[22]",
    "m_aCurrentTimeCp[23]",
    "m_aCurrentTimeCp[24]",
    "m_NotEligibleForFinish",
    "m_HasTelegunGun",
    "m_HasTelegunLaser",
    "m_HasTelegunGrenade",
    "m_aGameUuid",
    "HookedPlayer",
    "m_NewHook",
    "m_InputDirection",
    "m_InputJump",
    "m_InputFire",
    "m_InputHook",
    "m_ReloadTimer",
    "m_TeeStarted",
    "m_LiveFrozen",
    "m_Ninja.m_ActivationDir.x",
    "m_Ninja.m_ActivationDir.y",
    "m_Ninja.m_ActivationTick",
    "m_Ninja.m_CurrentMoveTime",
    "m_Ninja.m_OldVelAmount",
];

const SWITCHER_DESC: [&str; 3] = [
    "m_pSwitchers[i].m_Status",
    "m_pSwitchers[i].m_EndTime",
    "m_pSwitchers[i].m_Type",
];

impl SaveTeam {
    pub fn from_buf(buf: &[u8]) -> Self {
        Self {
            buf: String::from_utf8_lossy(buf).to_string(),
        }
    }

    pub fn from_string(buf: String) -> Self {
        Self { buf }
    }

    fn print_variables(part: &str, id: u32, values: &str, variables: &[&str]) {
        let mut vals = values.split('\t');
        for (i, var) in variables.iter().enumerate() {
            let v = vals.next();
            println!("{part}[{id}] {var} ({i}): {v:?}");
        }
    }

    fn compare_format_variables(
        part: &str,
        id: u32,
        got: &str,
        expected: &str,
        variables: &[&str],
    ) -> Vec<String> {
        let mut strings = Vec::new();
        let mut got = got.split('\t');
        let mut expected = expected.split('\t');
        for (i, var) in variables.iter().enumerate() {
            let g = got.next();
            let e = expected.next();
            if g != e {
                strings.push(format!(
                    "{part}[{id}] {var} ({i}): (got) {g:?} != {e:?} (expected)"
                ));
            }
        }
        strings
    }

    fn compare_variables(part: &str, id: u32, got: &str, expected: &str, variables: &[&str]) {
        for msg in Self::compare_format_variables(part, id, got, expected, variables) {
            println!("{msg}");
        }
    }

    fn are_tees_same_compat(got: &str, expected: &str) -> bool {
        // whether this is relevant is decided later by HookState and HookedPlayer
        let mut hook_tick_correct = true;
        let mut got = got.split('\t');
        let expected = expected.split('\t');
        for (el, e) in expected.enumerate() {
            let g = got.next();
            if matches!(
                el,
                3 // matches m_NeededFakeTuning
                    | 7 | 11 | 15 | 19 | 23 | 27 // ammo
                    | 68 // m_TimeCpBroadcastEndTime
            ) {
                continue;
            }
            if el == 67 && !hook_tick_correct && e == "4" {
                // m_HookState == HOOK_FLYING
                return false;
            }
            if el == 101 && !hook_tick_correct && e != "-1" {
                // HookedPlayer != -1
                return false;
            }
            if g.map(|g| g != e).unwrap_or(true) {
                // m_HookTick
                if el == 66 {
                    // store that hook tick is incorrect whether that is relevant depends on whether
                    // the hook is currently flying or attached to a Tee
                    hook_tick_correct = false;
                    continue;
                }
                return false;
            }
        }
        true
    }

    fn are_switchers_same_compat(got: &str, expected: &str) -> bool {
        let mut got = got.split('\t');
        let expected = expected.split('\t');
        for e in expected {
            let g = got.next();
            if g.map(|g| g != e).unwrap_or(true) {
                return false;
            }
        }
        true
    }

    fn parse_head(head: &str) -> (u32, u32) {
        let mut head = head.split('\t');
        let _ = head.next();
        let num_tees = head
            .next()
            .map(|el| el.parse::<u32>().unwrap_or(0))
            .unwrap_or(0);
        let num_switchers = head
            .next()
            .map(|el| el.parse::<u32>().unwrap_or(0))
            .unwrap_or(0);
        (num_tees, num_switchers)
    }

    pub fn format_diff(&self, expected: &Self) -> Vec<String> {
        let mut diffs = Vec::new();
        let mut got = self.buf.split('\n');
        let mut expected = expected.buf.split('\n');

        let (g, e) = match (got.next(), expected.next()) {
            (Some(g), Some(e)) => (g, e),
            (Some(g), None) => {
                diffs.push(format!("expected no header got {g}"));
                return diffs;
            }
            (None, Some(e)) => {
                diffs.push(format!("expected header {e}, got nothing"));
                return diffs;
            }
            (None, None) => {
                return diffs;
            }
        };
        diffs.extend(SaveTeam::compare_format_variables(
            "header", 0, g, e, &TEAM_DESC,
        ));
        let (mut g_tees, mut g_switchers) = SaveTeam::parse_head(g);
        let (mut e_tees, mut e_switchers) = SaveTeam::parse_head(e);
        let mut tee = 0;
        while g_tees > 0 || e_tees > 0 {
            let g = if g_tees > 0 {
                let g = got.next().unwrap_or("");
                g_tees -= 1;
                g
            } else {
                ""
            };
            let e = if e_tees > 0 {
                let e = expected.next().unwrap_or("");
                e_tees -= 1;
                e
            } else {
                ""
            };
            diffs.extend(SaveTeam::compare_format_variables(
                "tee", tee, g, e, &TEE_DESC,
            ));
            tee += 1;
        }
        let mut switchers = 0;
        while g_switchers > 0 || e_switchers > 0 {
            let g = if g_switchers > 0 {
                let g = got.next().unwrap_or("");
                g_switchers -= 1;
                g
            } else {
                ""
            };
            let e = if e_switchers > 0 {
                let e = expected.next().unwrap_or("");
                e_switchers -= 1;
                e
            } else {
                ""
            };
            diffs.extend(SaveTeam::compare_format_variables(
                "switcher",
                switchers,
                g,
                e,
                &SWITCHER_DESC,
            ));
            switchers += 1;
        }
        if let Some(remaining) = expected.next() {
            diffs.push(format!(
                "unexpected remaining line(s) in expected: {remaining}"
            ));
        }
        if let Some(remaining) = got.next() {
            diffs.push(format!("unexpected remaining line(s) in got: {remaining}"));
        }
        diffs
    }

    pub fn print_diff(&self, expected: &Self) {
        for diff in self.format_diff(expected) {
            println!("{diff}");
        }
    }

    pub fn pretty_print(&self) {
        let mut parts = self.buf.split('\n');
        let Some(header) = parts.next() else {
            return;
        };
        SaveTeam::print_variables("header", 0, header, &TEAM_DESC);
        let (num_tees, num_switchers) = SaveTeam::parse_head(header);
        for tee_id in 0..num_tees {
            SaveTeam::print_variables("tee", tee_id, parts.next().unwrap_or(""), &TEE_DESC);
        }
        for switch_id in 0..num_switchers {
            SaveTeam::print_variables(
                "switcher",
                switch_id,
                parts.next().unwrap_or(""),
                &SWITCHER_DESC,
            );
        }
    }
}

#[derive(Clone, Debug)]
pub enum DatabaseResult {
    LoadSuccess(i32, SaveTeam),
    LoadFailure(i32),
    SaveSuccess(i32),
    SaveFailure(i32),
}

impl DatabaseResult {
    pub fn team(&self) -> i32 {
        match self {
            DatabaseResult::LoadSuccess(team, _) => *team,
            DatabaseResult::LoadFailure(team) => *team,
            DatabaseResult::SaveSuccess(team) => *team,
            DatabaseResult::SaveFailure(team) => *team,
        }
    }
}

impl DatabaseWrite {
    pub fn finish_tee(name: &str, time: Duration) -> Self {
        Self::FinishTee(FinishTee::new_from_str(name, time))
    }
}