jelq

public

an http based roguelike rpg about jelqing

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use std::{fmt::Write as _, ops::ControlFlow, time::Instant};

use axum::http::{StatusCode, header};
use rand::Rng;
use serde_json::json;

use super::{
    Floor, Grip, LUBRICANTS, Lube, Outcome, Payload, Run, Story, Technique,
    balance::{
        ARRIVAL_BONUS, BAND_BONUS, BRANCH_TURN, CAT_TAKES_TOWEL, CHANGING_ROOM_CHILL, DANGER_EQ,
        EQ_BAND, EQ_WOBBLE, EXTENDER_GAIN, GREED_HOT, GREED_WARM, HOLD_EQ, HOT_EQ, MEDITATION_EQ,
        OBSERVED, PRIAPISM_EQ, PRIAPISM_TURNS, PULLED_MUSCLE, PULLED_MUSCLE_INTENSITY, REFLECTION,
        RING_PRIAPISM, RING_RUPTURE_LINE, RUPTURE_LINE, STORAGE_GIRTH, SUSPICION_LIMIT,
    },
    not_extended, round3,
    state::{MumVisit, Observer, Pending},
    techniques::{LubeRule, Profile, Training, Utility},
};
use crate::{headers::SERVER_TIMING, problem::Problem};

impl Run {
    pub fn jelq(
        &mut self,
        techniques: &[Technique],
        intensity: i32,
        lube: Option<Lube>,
        now: Instant,
    ) -> Result<Outcome, Problem> {
        self.check_refractory(now)?;
        if self.story == Story::Pending {
            return Ok(self.branch_offer());
        }
        if self.floor == Floor::Forum {
            return Ok(Outcome::json(
                StatusCode::SEE_OTHER,
                json!({ "detail": "Refer to the forum." }),
            )
            .header(header::LOCATION, super::FORUM_THREAD));
        }
        if self.items.cage {
            return Err(Problem::new(
                StatusCode::LOCKED,
                "caged",
                "The cage is locked. The key is not in the box.",
            ));
        }
        self.here.shopping = false;
        match *techniques {
            [Technique::Utility(utility)] => self.utility(utility, lube, now),
            [Technique::Training(training)] => self.single(training, intensity, lube, now),
            [Technique::Training(a), Technique::Training(b)] => {
                self.combo(a, b, intensity, lube, now)
            }
            [_, _] => Err(Problem::new(
                StatusCode::BAD_REQUEST,
                "combo-invalid",
                "Only training techniques can be combined.",
            )),
            _ => Err(Problem::new(
                StatusCode::BAD_REQUEST,
                "too-many-techniques",
                "Two techniques at most. The server has limits even if you do not.",
            )),
        }
    }

    fn utility(
        &mut self,
        utility: Utility,
        lube: Option<Lube>,
        now: Instant,
    ) -> Result<Outcome, Problem> {
        match utility {
            Utility::Warmup => return self.warm_up(),
            Utility::Ice => return self.ice(),
            Utility::Supplement => return self.supplement(),
            Utility::Meditate => return self.meditate(),
            Utility::Energy => return self.energy(),
            Utility::Edge | Utility::Pump => {}
        }
        if utility == Utility::Pump {
            self.here.edges = 0;
        }
        self.ready(Technique::Utility(utility), lube)?;
        self.check_storage()?;
        self.floor_enemy()?;
        match utility {
            Utility::Edge => self.edge(now),
            _ => self.pump(now),
        }
    }

    fn single(
        &mut self,
        training: Training,
        intensity: i32,
        lube: Option<Lube>,
        now: Instant,
    ) -> Result<Outcome, Problem> {
        self.here.edges = 0;
        self.ready(Technique::Training(training), lube)?;
        self.take_lube(lube)?;
        self.check_storage()?;
        self.floor_enemy()?;
        self.commit(intensity, lube, now, 1);
        if let ControlFlow::Break(interrupted) = self.mishaps(training, intensity)? {
            return Ok(interrupted);
        }
        if let ControlFlow::Break(interrupted) = self.hazards(intensity)? {
            return Ok(interrupted);
        }
        let outcome = self.roll(training, intensity, lube)?;
        Ok(self.gossip(outcome))
    }

    fn combo(
        &mut self,
        a: Training,
        b: Training,
        intensity: i32,
        lube: Option<Lube>,
        now: Instant,
    ) -> Result<Outcome, Problem> {
        if a == b {
            return Err(Problem::new(
                StatusCode::BAD_REQUEST,
                "combo-invalid",
                "A technique cannot be combined with itself. The server has checked.",
            ));
        }
        self.here.edges = 0;
        self.ready(Technique::Training(a), lube)?;
        self.ready(Technique::Training(b), lube)?;
        self.take_lube(lube)?;
        self.check_storage()?;
        self.floor_enemy()?;
        self.commit(intensity, lube, now, 2);
        for training in [a, b] {
            if let ControlFlow::Break(interrupted) = self.mishaps(training, intensity)? {
                return Ok(interrupted);
            }
        }
        if let ControlFlow::Break(interrupted) = self.hazards(intensity)? {
            return Ok(interrupted);
        }

        let mut statuses = Vec::new();
        for training in [a, b] {
            let result = self.roll(training, intensity, lube);
            if self.ended.is_some() {
                return result;
            }
            let status = match result {
                Ok(outcome) => self.gossip(outcome).status,
                Err(problem) => problem.status(),
            };
            statuses.push((training, status));
        }

        let mut xml = String::from(
            "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<D:multistatus xmlns:D=\"DAV:\">\n",
        );
        for (training, status) in statuses {
            let _ = write!(
                xml,
                "  <D:response>\n    <D:href>{}?technique={}</D:href>\n    <D:status>HTTP/1.1 {} {}</D:status>\n  </D:response>\n",
                self.path(""),
                training.name(),
                status.as_u16(),
                crate::problem::reason(status),
            );
        }
        xml.push_str(
            "  <D:responsedescription>Each technique has been reported separately.</D:responsedescription>\n</D:multistatus>\n",
        );
        Ok(Outcome::raw(
            StatusCode::MULTI_STATUS,
            "application/xml; charset=utf-8",
            xml,
        ))
    }

    fn ready(&self, technique: Technique, lube: Option<Lube>) -> Result<(), Problem> {
        self.access(technique)?;
        match technique {
            Technique::Training(training) => Self::check_lube(training, lube),
            Technique::Utility(_) => Ok(()),
        }
    }

    /// Whether the run could attempt the technique now, ignoring the lubricant.
    fn access(&self, technique: Technique) -> Result<(), Problem> {
        if technique == Technique::Training(Training::Uli) && !self.forum_read() {
            return Err(Problem::new(
                StatusCode::FORBIDDEN,
                "technique-locked",
                "uli is discussed on the forum, in a thread from 2009, by a man who never posted again. You have not been to the forum.",
            ));
        }
        if technique == Technique::Utility(Utility::Meditate) {
            return if self.meditation_taught {
                Ok(())
            } else {
                Err(Problem::new(
                    StatusCode::FORBIDDEN,
                    "technique-locked",
                    "The breathing technique is described in one of the forum's replies. You have not found it.",
                ))
            };
        }
        if !self.warmed_up {
            return Err(Problem::new(
                StatusCode::PRECONDITION_FAILED,
                "cold-start",
                "Warm-up was skipped. The server has noted this.",
            )
            .with("technique", Utility::Warmup.name()));
        }
        match technique {
            Technique::Utility(Utility::Pump) if !self.items.pump_pro => Err(Problem::new(
                StatusCode::FAILED_DEPENDENCY,
                "no-pump",
                "The pump technique depends on a pump.",
            )),
            Technique::Utility(_) => Ok(()),
            Technique::Training(training) => match training.profile().foreskin {
                Some((min, max)) => self.check_foreskin(min, max),
                None => Ok(()),
            },
        }
    }

    fn check_lube(training: Training, lube: Option<Lube>) -> Result<(), Problem> {
        match (training.profile().lube, lube) {
            (LubeRule::Required, None) => Err(Problem::new(
                StatusCode::UNSUPPORTED_MEDIA_TYPE,
                "lubricant-required",
                format!(
                    "The {} technique requires a lubricant. None was declared.",
                    training.name()
                ),
            )
            .with("lubricants", json!(LUBRICANTS))),
            (LubeRule::Forbidden, Some(_)) => Err(Problem::new(
                StatusCode::UNSUPPORTED_MEDIA_TYPE,
                "lubricant-declared",
                format!(
                    "The {} technique was requested. A lubricant was declared.",
                    training.name()
                ),
            )),
            _ => Ok(()),
        }
    }

    /// One unit of whatever was declared. Spit is free and the tap is always on.
    fn take_lube(&mut self, lube: Option<Lube>) -> Result<(), Problem> {
        let (held, name) = match lube {
            None | Some(Lube::Spit) => return Ok(()),
            Some(Lube::BabyOil) => (&mut self.items.baby_oil, "baby-oil"),
            Some(Lube::CoconutOil) => (&mut self.items.coconut_oil, "coconut-oil"),
            Some(Lube::Lotion) => (&mut self.items.lotion, "lotion"),
            Some(Lube::Vaseline) => (&mut self.items.vaseline, "vaseline"),
        };
        if *held == 0 {
            return Err(Problem::new(
                StatusCode::PRECONDITION_FAILED,
                "lubricant-exhausted",
                format!("{name} was declared, but the bottle is empty."),
            ));
        }
        *held -= 1;
        Ok(())
    }

    /// The techniques a JELQ could use right now without being refused before the roll.
    pub fn techniques_now(&self, now: Instant) -> Vec<Technique> {
        let blocked = !self.floor.timed()
            || self.items.cage
            || self.refractory_until.is_some_and(|until| now < until);
        if blocked {
            return Vec::new();
        }
        Technique::ALL
            .into_iter()
            .filter(|&technique| match technique {
                Technique::Utility(Utility::Warmup) => true,
                Technique::Utility(Utility::Ice) => self.items.ice_packs > 0,
                Technique::Utility(Utility::Supplement) => self.items.supplements > 0,
                Technique::Utility(Utility::Meditate) => {
                    self.meditation_taught && !self.here.meditated
                }
                Technique::Utility(Utility::Energy) => self.items.energy_drinks > 0,
                _ => self.access(technique).is_ok() && self.check_storage().is_ok(),
            })
            .collect()
    }

    fn check_foreskin(&self, min: f64, max: f64) -> Result<(), Problem> {
        let Some(f) = self.foreskin else {
            if min <= 0.0 {
                return Ok(());
            }
            return Err(Problem::new(
                StatusCode::GONE,
                "foreskin-gone",
                "This technique requires a foreskin. The foreskin is gone.",
            )
            .header(header::CONTENT_LOCATION, self.path("/foreskin")));
        };
        if f < min {
            return Err(Problem::new(
                StatusCode::LENGTH_REQUIRED,
                "foreskin-insufficient",
                format!(
                    "The selected technique requires {min:.1} units of foreskin. {f:.2} units are available. The server has noted the shortfall."
                ),
            )
            .with("required", min));
        }
        if f > max {
            return Err(Problem::new(
                StatusCode::PAYLOAD_TOO_LARGE,
                "foreskin-excessive",
                format!(
                    "The selected technique tolerates at most {max:.1} units of foreskin. {f:.2} units are present."
                ),
            )
            .with("maximum", max));
        }
        Ok(())
    }

    fn check_storage(&self) -> Result<(), Problem> {
        if self.items.extender && self.girth > STORAGE_GIRTH {
            return Err(Problem::new(
                StatusCode::INSUFFICIENT_STORAGE,
                "jeans-full",
                "The jeans are full. The extender is occupying the remaining storage.",
            )
            .with("extender", self.path("/inventory/extender")));
        }
        Ok(())
    }

    pub(super) fn commit(&mut self, intensity: i32, lube: Option<Lube>, now: Instant, cost: i32) {
        self.touch();
        self.turn += 1;
        self.here.turns += 1;
        self.realise();
        if self.items.extender {
            self.length += EXTENDER_GAIN;
        }
        self.stamina -= cost + i32::from(lube == Some(Lube::Lotion));
        if self.stamina <= 0 {
            self.exhaust(now);
        }
        let chill = if self.floor == Floor::ChangingRoom {
            CHANGING_ROOM_CHILL
        } else {
            0
        };
        let wobble = self.rng.random_range(-EQ_WOBBLE..=EQ_WOBBLE);
        self.eq = (self.eq + intensity * 2 - 6 - chill + wobble).clamp(0, 100);

        let mut suspicion = intensity / 5 + i32::from(lube == Some(Lube::Vaseline));
        if matches!(self.floor, Floor::ChangingRoom | Floor::Nans) {
            suspicion *= 2;
        }
        if self.floor == Floor::Nans && lube == Some(Lube::CoconutOil) {
            suspicion += 2;
        }
        let was_below = self.suspicion < SUSPICION_LIMIT;
        self.suspicion =
            u8::try_from((i32::from(self.suspicion) + suspicion).min(i32::from(SUSPICION_LIMIT)))
                .unwrap_or(SUSPICION_LIMIT);

        if intensity >= PULLED_MUSCLE_INTENSITY
            && !self.conditions.pulled_muscle
            && self.chance(PULLED_MUSCLE)
        {
            self.conditions.pulled_muscle = true;
            self.stamina = self.stamina.min(self.max_stamina());
        }
        self.settle(was_below);
    }

    /// The part of a turn the house takes part in, whatever the action was.
    pub(super) fn settle(&mut self, was_below: bool) {
        self.maybe_summon_mum(was_below);
        if let Some(observer) = self.floor.observer()
            && self.chance(OBSERVED)
        {
            self.observed = Some(observer);
            self.shame += 1;
            if observer == Observer::Cat && self.chance(CAT_TAKES_TOWEL) {
                self.here.towel_stolen = true;
            }
        }
        if self.items.ring && self.eq > HOT_EQ && self.chance(RING_PRIAPISM) {
            self.conditions.priapism_turns = PRIAPISM_TURNS;
        }
        if self.conditions.priapism_turns > 0 {
            self.conditions.priapism_turns -= 1;
            self.eq = self.eq.max(PRIAPISM_EQ);
        }
        if self.turn == BRANCH_TURN && self.story == Story::Unopened {
            self.story = Story::Pending;
            self.notices
                .push("Somewhere, a forum thread from 2009 still has replies.");
        }
    }

    /// HOLD. A pause between strokes, offered when the band has been left or the stamina is gone.
    pub fn can_hold(&self) -> bool {
        self.eq > DANGER_EQ || self.stamina <= 2
    }

    pub fn hold(&mut self, now: Instant) -> Result<Outcome, Problem> {
        self.check_refractory(now)?;
        if self.story == Story::Pending {
            return Ok(self.branch_offer());
        }
        if self.items.cage {
            return Err(Problem::new(
                StatusCode::LOCKED,
                "caged",
                "The cage is locked. The key is not in the box.",
            ));
        }
        self.touch();
        self.turn += 1;
        self.here.turns += 1;
        self.realise();
        let was_below = self.suspicion < SUSPICION_LIMIT;
        if self.chance(REFLECTION) {
            self.eq = 0;
            self.shame += 1;
            self.notices
                .push("the count reached ten, and then the reflection started");
        } else {
            self.eq = (self.eq - HOLD_EQ).clamp(0, 100);
        }
        self.stamina = (self.stamina + 1).min(self.max_stamina());
        self.settle(was_below);
        Ok(Outcome::empty(StatusCode::NO_CONTENT))
    }

    /// The breathing technique from the forum's replies. It spends no stamina and the turn is
    /// not the floor's, but each floor allows it once.
    fn meditate(&mut self) -> Result<Outcome, Problem> {
        self.access(Technique::Utility(Utility::Meditate))?;
        if self.here.meditated {
            return Err(Problem::new(
                StatusCode::CONFLICT,
                "already-meditated",
                "This floor has had its meditation.",
            ));
        }
        self.here.meditated = true;
        self.eq = (self.eq - MEDITATION_EQ).clamp(0, 100);
        self.touch();
        Ok(Outcome::json(
            StatusCode::OK,
            json!({
                "detail": "In through the nose, out through the mouth. EQ falls by ten.",
            }),
        ))
    }

    pub(super) fn maybe_summon_mum(&mut self, was_below: bool) {
        if !self.floor.has_mum() || self.mum.is_some() {
            return;
        }
        let summoned = was_below && self.suspicion == SUSPICION_LIMIT;
        let mut visits = u32::from(self.suspicion) + 1;
        if self.here.brother_told {
            visits *= 2;
        }
        if summoned || self.rng.random_ratio(visits, super::balance::MUM_VISIT) {
            let errand = self.errand(summoned);
            let nonce = self.fresh_nonce();
            self.mum = Some(MumVisit {
                errand,
                nonce,
                strikes: 0,
                knocked: false,
            });
        }
    }

    fn roll(
        &mut self,
        training: Training,
        intensity: i32,
        lube: Option<Lube>,
    ) -> Result<Outcome, Problem> {
        let profile = training.profile();
        let natural: i32 = self.rng.random_range(1..=20);
        let band = if EQ_BAND.contains(&self.eq) {
            BAND_BONUS
        } else {
            0
        };
        let grip = match (self.grip, training) {
            (Grip::Underhand, Training::Stretch) => 2,
            (Grip::Underhand, Training::Wet) => -1,
            _ => 0,
        };
        let arrival = if self.here.warm_arrival {
            self.here.warm_arrival = false;
            ARRIVAL_BONUS
        } else {
            0
        };
        let modifier = lube.map_or(0, Lube::modifier) + band + grip + arrival;
        let dc = profile.dc + intensity / 3;
        let total = natural + modifier;
        let timing = format!("roll;desc=\"d20{modifier:+} vs {dc}\";dur={natural}");
        let timed = |p: Problem| p.header(SERVER_TIMING, &timing);

        let (length, girth) = self.scaled_gains(&profile, intensity);
        let rupture_line = if self.items.ring {
            RING_RUPTURE_LINE
        } else {
            RUPTURE_LINE
        };

        if natural == 1 {
            return Err(timed(self.critical_failure(training, &profile)));
        }
        if natural == 2 && self.eq > DANGER_EQ {
            return Err(timed(self.rupture()));
        }
        if self.eq > rupture_line && total < dc {
            return Err(timed(self.rupture()));
        }
        if natural == 20 {
            self.gain(length * 2.0, girth * 2.0, profile.foreskin_growth);
            return Ok(Outcome::json(
                StatusCode::PERMANENT_REDIRECT,
                json!({
                    "detail": "Your length has moved permanently.",
                    "length": round3(length * 2.0),
                    "girth": round3(girth * 2.0),
                }),
            )
            .header(header::LOCATION, self.path("/length"))
            .header(SERVER_TIMING, timing));
        }
        if total < dc - 3 {
            return Err(timed(not_extended()));
        }
        if total < dc {
            return Ok(Outcome::empty(StatusCode::NO_CONTENT).header(SERVER_TIMING, timing));
        }

        let outcome = if self.eq < *EQ_BAND.start() {
            self.gain(length / 2.0, girth / 2.0, profile.foreskin_growth);
            Outcome::json(
                StatusCode::PARTIAL_CONTENT,
                json!({
                    "detail": "Partial gains were applied. EQ was below the band.",
                    "length": round3(length / 2.0),
                    "girth": round3(girth / 2.0),
                }),
            )
        } else if total >= dc + 5 {
            self.gain(length, girth, profile.foreskin_growth);
            Outcome::json(
                StatusCode::OK,
                json!({
                    "detail": "Gains were applied.",
                    "length": round3(length),
                    "girth": round3(girth),
                }),
            )
        } else {
            let eta = self.rng.random_range(1..=4);
            self.pending.push(Pending {
                due: self.turn + eta,
                length,
                girth,
            });
            self.gain(0.0, 0.0, profile.foreskin_growth);
            Outcome::json(
                StatusCode::ACCEPTED,
                json!({
                    "detail": "Gains have been queued. They may arrive.",
                    "eta_turns": eta,
                }),
            )
        };
        Ok(outcome.header(SERVER_TIMING, timing))
    }

    fn scaled_gains(&self, profile: &Profile, intensity: i32) -> (f64, f64) {
        let scale = f64::from(intensity);
        let (mut length, mut girth) = (profile.length * scale, profile.girth * scale);
        let greed = if self.eq > HOT_EQ {
            GREED_HOT
        } else if self.eq > DANGER_EQ {
            GREED_WARM
        } else {
            1.0
        };
        length *= greed;
        girth *= greed;
        if self.here.teapot {
            length *= 0.5;
            girth *= 1.5;
        }
        if self.items.ring {
            girth *= 2.0;
        }
        (length, girth)
    }

    fn critical_failure(&mut self, training: Training, profile: &Profile) -> Problem {
        let uses_foreskin = profile.foreskin.is_some_and(|(min, _)| min > 0.0);
        if uses_foreskin && self.foreskin.is_some() {
            self.foreskin = None;
            self.shame += 25;
            return Problem::new(
                StatusCode::GONE,
                "foreskin-lost",
                "The technique has removed the foreskin. It will not be returning.",
            )
            .header(header::CONTENT_LOCATION, self.path("/foreskin"));
        }
        if self.eq > DANGER_EQ {
            return self.rupture();
        }
        if training == Training::Stretch && !self.here.teapot {
            self.here.teapot = true;
            self.items.teapot_spout = true;
            self.shame += 5;
            return Problem::new(
                StatusCode::IM_A_TEAPOT,
                "teapot",
                "The subject is now short and stout. Length gains are halved for the rest of the floor.",
            );
        }
        if training == Training::Uli && !self.conditions.peyronie {
            self.conditions.peyronie = true;
            self.shame += 5;
            return Problem::new(
                StatusCode::MISDIRECTED_REQUEST,
                "curvature",
                "A curvature has developed. Techniques will land slightly to the left until a professional is consulted.",
            );
        }
        not_extended()
    }

    fn gossip(&mut self, mut outcome: Outcome) -> Outcome {
        let reportable = matches!(outcome.status.as_u16(), 200 | 202 | 206);
        if !self.here.brother_told || !reportable {
            return outcome;
        }
        self.here.brother_told = false;
        outcome.status = StatusCode::ALREADY_REPORTED;
        if let Payload::Json(body) = &mut outcome.payload {
            body["detail"] = json!("Your brother has already told Mum.");
        }
        outcome
    }
}

1	use std::{fmt::Write as _, ops::ControlFlow, time::Instant};
2
3	use axum::http::{StatusCode, header};
4	use rand::Rng;
5	use serde_json::json;
6
7	use super::{
8	Floor, Grip, LUBRICANTS, Lube, Outcome, Payload, Run, Story, Technique,
9	balance::{
10	ARRIVAL_BONUS, BAND_BONUS, BRANCH_TURN, CAT_TAKES_TOWEL, CHANGING_ROOM_CHILL, DANGER_EQ,
11	EQ_BAND, EQ_WOBBLE, EXTENDER_GAIN, GREED_HOT, GREED_WARM, HOLD_EQ, HOT_EQ, MEDITATION_EQ,
12	OBSERVED, PRIAPISM_EQ, PRIAPISM_TURNS, PULLED_MUSCLE, PULLED_MUSCLE_INTENSITY, REFLECTION,
13	RING_PRIAPISM, RING_RUPTURE_LINE, RUPTURE_LINE, STORAGE_GIRTH, SUSPICION_LIMIT,
14	},
15	not_extended, round3,
16	state::{MumVisit, Observer, Pending},
17	techniques::{LubeRule, Profile, Training, Utility},
18	};
19	use crate::{headers::SERVER_TIMING, problem::Problem};
20
21	impl Run {
22	pub fn jelq(
23	&mut self,
24	techniques: &[Technique],
25	intensity: i32,
26	lube: Option<Lube>,
27	now: Instant,
28	) -> Result<Outcome, Problem> {
29	self.check_refractory(now)?;
30	if self.story == Story::Pending {
31	return Ok(self.branch_offer());
32	}
33	if self.floor == Floor::Forum {
34	return Ok(Outcome::json(
35	StatusCode::SEE_OTHER,
36	json!({ "detail": "Refer to the forum." }),
37	)
38	.header(header::LOCATION, super::FORUM_THREAD));
39	}
40	if self.items.cage {
41	return Err(Problem::new(
42	StatusCode::LOCKED,
43	"caged",
44	"The cage is locked. The key is not in the box.",
45	));
46	}
47	self.here.shopping = false;
48	match *techniques {
49	[Technique::Utility(utility)] => self.utility(utility, lube, now),
50	[Technique::Training(training)] => self.single(training, intensity, lube, now),
51	[Technique::Training(a), Technique::Training(b)] => {
52	self.combo(a, b, intensity, lube, now)
53	}
54	[_, _] => Err(Problem::new(
55	StatusCode::BAD_REQUEST,
56	"combo-invalid",
57	"Only training techniques can be combined.",
58	)),
59	_ => Err(Problem::new(
60	StatusCode::BAD_REQUEST,
61	"too-many-techniques",
62	"Two techniques at most. The server has limits even if you do not.",
63	)),
64	}
65	}
66
67	fn utility(
68	&mut self,
69	utility: Utility,
70	lube: Option<Lube>,
71	now: Instant,
72	) -> Result<Outcome, Problem> {
73	match utility {
74	Utility::Warmup => return self.warm_up(),
75	Utility::Ice => return self.ice(),
76	Utility::Supplement => return self.supplement(),
77	Utility::Meditate => return self.meditate(),
78	Utility::Energy => return self.energy(),
79	Utility::Edge \| Utility::Pump => {}
80	}
81	if utility == Utility::Pump {
82	self.here.edges = 0;
83	}
84	self.ready(Technique::Utility(utility), lube)?;
85	self.check_storage()?;
86	self.floor_enemy()?;
87	match utility {
88	Utility::Edge => self.edge(now),
89	_ => self.pump(now),
90	}
91	}
92
93	fn single(
94	&mut self,
95	training: Training,
96	intensity: i32,
97	lube: Option<Lube>,
98	now: Instant,
99	) -> Result<Outcome, Problem> {
100	self.here.edges = 0;
101	self.ready(Technique::Training(training), lube)?;
102	self.take_lube(lube)?;
103	self.check_storage()?;
104	self.floor_enemy()?;
105	self.commit(intensity, lube, now, 1);
106	if let ControlFlow::Break(interrupted) = self.mishaps(training, intensity)? {
107	return Ok(interrupted);
108	}
109	if let ControlFlow::Break(interrupted) = self.hazards(intensity)? {
110	return Ok(interrupted);
111	}
112	let outcome = self.roll(training, intensity, lube)?;
113	Ok(self.gossip(outcome))
114	}
115
116	fn combo(
117	&mut self,
118	a: Training,
119	b: Training,
120	intensity: i32,
121	lube: Option<Lube>,
122	now: Instant,
123	) -> Result<Outcome, Problem> {
124	if a == b {
125	return Err(Problem::new(
126	StatusCode::BAD_REQUEST,
127	"combo-invalid",
128	"A technique cannot be combined with itself. The server has checked.",
129	));
130	}
131	self.here.edges = 0;
132	self.ready(Technique::Training(a), lube)?;
133	self.ready(Technique::Training(b), lube)?;
134	self.take_lube(lube)?;
135	self.check_storage()?;
136	self.floor_enemy()?;
137	self.commit(intensity, lube, now, 2);
138	for training in [a, b] {
139	if let ControlFlow::Break(interrupted) = self.mishaps(training, intensity)? {
140	return Ok(interrupted);
141	}
142	}
143	if let ControlFlow::Break(interrupted) = self.hazards(intensity)? {
144	return Ok(interrupted);
145	}
146
147	let mut statuses = Vec::new();
148	for training in [a, b] {
149	let result = self.roll(training, intensity, lube);
150	if self.ended.is_some() {
151	return result;
152	}
153	let status = match result {
154	Ok(outcome) => self.gossip(outcome).status,
155	Err(problem) => problem.status(),
156	};
157	statuses.push((training, status));
158	}
159
160	let mut xml = String::from(
161	"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<D:multistatus xmlns:D=\"DAV:\">\n",
162	);
163	for (training, status) in statuses {
164	let _ = write!(
165	xml,
166	" <D:response>\n <D:href>{}?technique={}</D:href>\n <D:status>HTTP/1.1 {} {}</D:status>\n </D:response>\n",
167	self.path(""),
168	training.name(),
169	status.as_u16(),
170	crate::problem::reason(status),
171	);
172	}
173	xml.push_str(
174	" <D:responsedescription>Each technique has been reported separately.</D:responsedescription>\n</D:multistatus>\n",
175	);
176	Ok(Outcome::raw(
177	StatusCode::MULTI_STATUS,
178	"application/xml; charset=utf-8",
179	xml,
180	))
181	}
182
183	fn ready(&self, technique: Technique, lube: Option<Lube>) -> Result<(), Problem> {
184	self.access(technique)?;
185	match technique {
186	Technique::Training(training) => Self::check_lube(training, lube),
187	Technique::Utility(_) => Ok(()),
188	}
189	}
190
191	/// Whether the run could attempt the technique now, ignoring the lubricant.
192	fn access(&self, technique: Technique) -> Result<(), Problem> {
193	if technique == Technique::Training(Training::Uli) && !self.forum_read() {
194	return Err(Problem::new(
195	StatusCode::FORBIDDEN,
196	"technique-locked",
197	"uli is discussed on the forum, in a thread from 2009, by a man who never posted again. You have not been to the forum.",
198	));
199	}
200	if technique == Technique::Utility(Utility::Meditate) {
201	return if self.meditation_taught {
202	Ok(())
203	} else {
204	Err(Problem::new(
205	StatusCode::FORBIDDEN,
206	"technique-locked",
207	"The breathing technique is described in one of the forum's replies. You have not found it.",
208	))
209	};
210	}
211	if !self.warmed_up {
212	return Err(Problem::new(
213	StatusCode::PRECONDITION_FAILED,
214	"cold-start",
215	"Warm-up was skipped. The server has noted this.",
216	)
217	.with("technique", Utility::Warmup.name()));
218	}
219	match technique {
220	Technique::Utility(Utility::Pump) if !self.items.pump_pro => Err(Problem::new(
221	StatusCode::FAILED_DEPENDENCY,
222	"no-pump",
223	"The pump technique depends on a pump.",
224	)),
225	Technique::Utility(_) => Ok(()),
226	Technique::Training(training) => match training.profile().foreskin {
227	Some((min, max)) => self.check_foreskin(min, max),
228	None => Ok(()),
229	},
230	}
231	}
232
233	fn check_lube(training: Training, lube: Option<Lube>) -> Result<(), Problem> {
234	match (training.profile().lube, lube) {
235	(LubeRule::Required, None) => Err(Problem::new(
236	StatusCode::UNSUPPORTED_MEDIA_TYPE,
237	"lubricant-required",
238	format!(
239	"The {} technique requires a lubricant. None was declared.",
240	training.name()
241	),
242	)
243	.with("lubricants", json!(LUBRICANTS))),
244	(LubeRule::Forbidden, Some(_)) => Err(Problem::new(
245	StatusCode::UNSUPPORTED_MEDIA_TYPE,
246	"lubricant-declared",
247	format!(
248	"The {} technique was requested. A lubricant was declared.",
249	training.name()
250	),
251	)),
252	_ => Ok(()),
253	}
254	}
255
256	/// One unit of whatever was declared. Spit is free and the tap is always on.
257	fn take_lube(&mut self, lube: Option<Lube>) -> Result<(), Problem> {
258	let (held, name) = match lube {
259	None \| Some(Lube::Spit) => return Ok(()),
260	Some(Lube::BabyOil) => (&mut self.items.baby_oil, "baby-oil"),
261	Some(Lube::CoconutOil) => (&mut self.items.coconut_oil, "coconut-oil"),
262	Some(Lube::Lotion) => (&mut self.items.lotion, "lotion"),
263	Some(Lube::Vaseline) => (&mut self.items.vaseline, "vaseline"),
264	};
265	if *held == 0 {
266	return Err(Problem::new(
267	StatusCode::PRECONDITION_FAILED,
268	"lubricant-exhausted",
269	format!("{name} was declared, but the bottle is empty."),
270	));
271	}
272	*held -= 1;
273	Ok(())
274	}
275
276	/// The techniques a JELQ could use right now without being refused before the roll.
277	pub fn techniques_now(&self, now: Instant) -> Vec<Technique> {
278	let blocked = !self.floor.timed()
279	\|\| self.items.cage
280	\|\| self.refractory_until.is_some_and(\|until\| now < until);
281	if blocked {
282	return Vec::new();
283	}
284	Technique::ALL
285	.into_iter()
286	.filter(\|&technique\| match technique {
287	Technique::Utility(Utility::Warmup) => true,
288	Technique::Utility(Utility::Ice) => self.items.ice_packs > 0,
289	Technique::Utility(Utility::Supplement) => self.items.supplements > 0,
290	Technique::Utility(Utility::Meditate) => {
291	self.meditation_taught && !self.here.meditated
292	}
293	Technique::Utility(Utility::Energy) => self.items.energy_drinks > 0,
294	_ => self.access(technique).is_ok() && self.check_storage().is_ok(),
295	})
296	.collect()
297	}
298
299	fn check_foreskin(&self, min: f64, max: f64) -> Result<(), Problem> {
300	let Some(f) = self.foreskin else {
301	if min <= 0.0 {
302	return Ok(());
303	}
304	return Err(Problem::new(
305	StatusCode::GONE,
306	"foreskin-gone",
307	"This technique requires a foreskin. The foreskin is gone.",
308	)
309	.header(header::CONTENT_LOCATION, self.path("/foreskin")));
310	};
311	if f < min {
312	return Err(Problem::new(
313	StatusCode::LENGTH_REQUIRED,
314	"foreskin-insufficient",
315	format!(
316	"The selected technique requires {min:.1} units of foreskin. {f:.2} units are available. The server has noted the shortfall."
317	),
318	)
319	.with("required", min));
320	}
321	if f > max {
322	return Err(Problem::new(
323	StatusCode::PAYLOAD_TOO_LARGE,
324	"foreskin-excessive",
325	format!(
326	"The selected technique tolerates at most {max:.1} units of foreskin. {f:.2} units are present."
327	),
328	)
329	.with("maximum", max));
330	}
331	Ok(())
332	}
333
334	fn check_storage(&self) -> Result<(), Problem> {
335	if self.items.extender && self.girth > STORAGE_GIRTH {
336	return Err(Problem::new(
337	StatusCode::INSUFFICIENT_STORAGE,
338	"jeans-full",
339	"The jeans are full. The extender is occupying the remaining storage.",
340	)
341	.with("extender", self.path("/inventory/extender")));
342	}
343	Ok(())
344	}
345
346	pub(super) fn commit(&mut self, intensity: i32, lube: Option<Lube>, now: Instant, cost: i32) {
347	self.touch();
348	self.turn += 1;
349	self.here.turns += 1;
350	self.realise();
351	if self.items.extender {
352	self.length += EXTENDER_GAIN;
353	}
354	self.stamina -= cost + i32::from(lube == Some(Lube::Lotion));
355	if self.stamina <= 0 {
356	self.exhaust(now);
357	}
358	let chill = if self.floor == Floor::ChangingRoom {
359	CHANGING_ROOM_CHILL
360	} else {
361	0
362	};
363	let wobble = self.rng.random_range(-EQ_WOBBLE..=EQ_WOBBLE);
364	self.eq = (self.eq + intensity * 2 - 6 - chill + wobble).clamp(0, 100);
365
366	let mut suspicion = intensity / 5 + i32::from(lube == Some(Lube::Vaseline));
367	if matches!(self.floor, Floor::ChangingRoom \| Floor::Nans) {
368	suspicion *= 2;
369	}
370	if self.floor == Floor::Nans && lube == Some(Lube::CoconutOil) {
371	suspicion += 2;
372	}
373	let was_below = self.suspicion < SUSPICION_LIMIT;
374	self.suspicion =
375	u8::try_from((i32::from(self.suspicion) + suspicion).min(i32::from(SUSPICION_LIMIT)))
376	.unwrap_or(SUSPICION_LIMIT);
377
378	if intensity >= PULLED_MUSCLE_INTENSITY
379	&& !self.conditions.pulled_muscle
380	&& self.chance(PULLED_MUSCLE)
381	{
382	self.conditions.pulled_muscle = true;
383	self.stamina = self.stamina.min(self.max_stamina());
384	}
385	self.settle(was_below);
386	}
387
388	/// The part of a turn the house takes part in, whatever the action was.
389	pub(super) fn settle(&mut self, was_below: bool) {
390	self.maybe_summon_mum(was_below);
391	if let Some(observer) = self.floor.observer()
392	&& self.chance(OBSERVED)
393	{
394	self.observed = Some(observer);
395	self.shame += 1;
396	if observer == Observer::Cat && self.chance(CAT_TAKES_TOWEL) {
397	self.here.towel_stolen = true;
398	}
399	}
400	if self.items.ring && self.eq > HOT_EQ && self.chance(RING_PRIAPISM) {
401	self.conditions.priapism_turns = PRIAPISM_TURNS;
402	}
403	if self.conditions.priapism_turns > 0 {
404	self.conditions.priapism_turns -= 1;
405	self.eq = self.eq.max(PRIAPISM_EQ);
406	}
407	if self.turn == BRANCH_TURN && self.story == Story::Unopened {
408	self.story = Story::Pending;
409	self.notices
410	.push("Somewhere, a forum thread from 2009 still has replies.");
411	}
412	}
413
414	/// HOLD. A pause between strokes, offered when the band has been left or the stamina is gone.
415	pub fn can_hold(&self) -> bool {
416	self.eq > DANGER_EQ \|\| self.stamina <= 2
417	}
418
419	pub fn hold(&mut self, now: Instant) -> Result<Outcome, Problem> {
420	self.check_refractory(now)?;
421	if self.story == Story::Pending {
422	return Ok(self.branch_offer());
423	}
424	if self.items.cage {
425	return Err(Problem::new(
426	StatusCode::LOCKED,
427	"caged",
428	"The cage is locked. The key is not in the box.",
429	));
430	}
431	self.touch();
432	self.turn += 1;
433	self.here.turns += 1;
434	self.realise();
435	let was_below = self.suspicion < SUSPICION_LIMIT;
436	if self.chance(REFLECTION) {
437	self.eq = 0;
438	self.shame += 1;
439	self.notices
440	.push("the count reached ten, and then the reflection started");
441	} else {
442	self.eq = (self.eq - HOLD_EQ).clamp(0, 100);
443	}
444	self.stamina = (self.stamina + 1).min(self.max_stamina());
445	self.settle(was_below);
446	Ok(Outcome::empty(StatusCode::NO_CONTENT))
447	}
448
449	/// The breathing technique from the forum's replies. It spends no stamina and the turn is
450	/// not the floor's, but each floor allows it once.
451	fn meditate(&mut self) -> Result<Outcome, Problem> {
452	self.access(Technique::Utility(Utility::Meditate))?;
453	if self.here.meditated {
454	return Err(Problem::new(
455	StatusCode::CONFLICT,
456	"already-meditated",
457	"This floor has had its meditation.",
458	));
459	}
460	self.here.meditated = true;
461	self.eq = (self.eq - MEDITATION_EQ).clamp(0, 100);
462	self.touch();
463	Ok(Outcome::json(
464	StatusCode::OK,
465	json!({
466	"detail": "In through the nose, out through the mouth. EQ falls by ten.",
467	}),
468	))
469	}
470
471	pub(super) fn maybe_summon_mum(&mut self, was_below: bool) {
472	if !self.floor.has_mum() \|\| self.mum.is_some() {
473	return;
474	}
475	let summoned = was_below && self.suspicion == SUSPICION_LIMIT;
476	let mut visits = u32::from(self.suspicion) + 1;
477	if self.here.brother_told {
478	visits *= 2;
479	}
480	if summoned \|\| self.rng.random_ratio(visits, super::balance::MUM_VISIT) {
481	let errand = self.errand(summoned);
482	let nonce = self.fresh_nonce();
483	self.mum = Some(MumVisit {
484	errand,
485	nonce,
486	strikes: 0,
487	knocked: false,
488	});
489	}
490	}
491
492	fn roll(
493	&mut self,
494	training: Training,
495	intensity: i32,
496	lube: Option<Lube>,
497	) -> Result<Outcome, Problem> {
498	let profile = training.profile();
499	let natural: i32 = self.rng.random_range(1..=20);
500	let band = if EQ_BAND.contains(&self.eq) {
501	BAND_BONUS
502	} else {
503	0
504	};
505	let grip = match (self.grip, training) {
506	(Grip::Underhand, Training::Stretch) => 2,
507	(Grip::Underhand, Training::Wet) => -1,
508	_ => 0,
509	};
510	let arrival = if self.here.warm_arrival {
511	self.here.warm_arrival = false;
512	ARRIVAL_BONUS
513	} else {
514	0
515	};
516	let modifier = lube.map_or(0, Lube::modifier) + band + grip + arrival;
517	let dc = profile.dc + intensity / 3;
518	let total = natural + modifier;
519	let timing = format!("roll;desc=\"d20{modifier:+} vs {dc}\";dur={natural}");
520	let timed = \|p: Problem\| p.header(SERVER_TIMING, &timing);
521
522	let (length, girth) = self.scaled_gains(&profile, intensity);
523	let rupture_line = if self.items.ring {
524	RING_RUPTURE_LINE
525	} else {
526	RUPTURE_LINE
527	};
528
529	if natural == 1 {
530	return Err(timed(self.critical_failure(training, &profile)));
531	}
532	if natural == 2 && self.eq > DANGER_EQ {
533	return Err(timed(self.rupture()));
534	}
535	if self.eq > rupture_line && total < dc {
536	return Err(timed(self.rupture()));
537	}
538	if natural == 20 {
539	self.gain(length * 2.0, girth * 2.0, profile.foreskin_growth);
540	return Ok(Outcome::json(
541	StatusCode::PERMANENT_REDIRECT,
542	json!({
543	"detail": "Your length has moved permanently.",
544	"length": round3(length * 2.0),
545	"girth": round3(girth * 2.0),
546	}),
547	)
548	.header(header::LOCATION, self.path("/length"))
549	.header(SERVER_TIMING, timing));
550	}
551	if total < dc - 3 {
552	return Err(timed(not_extended()));
553	}
554	if total < dc {
555	return Ok(Outcome::empty(StatusCode::NO_CONTENT).header(SERVER_TIMING, timing));
556	}
557
558	let outcome = if self.eq < *EQ_BAND.start() {
559	self.gain(length / 2.0, girth / 2.0, profile.foreskin_growth);
560	Outcome::json(
561	StatusCode::PARTIAL_CONTENT,
562	json!({
563	"detail": "Partial gains were applied. EQ was below the band.",
564	"length": round3(length / 2.0),
565	"girth": round3(girth / 2.0),
566	}),
567	)
568	} else if total >= dc + 5 {
569	self.gain(length, girth, profile.foreskin_growth);
570	Outcome::json(
571	StatusCode::OK,
572	json!({
573	"detail": "Gains were applied.",
574	"length": round3(length),
575	"girth": round3(girth),
576	}),
577	)
578	} else {
579	let eta = self.rng.random_range(1..=4);
580	self.pending.push(Pending {
581	due: self.turn + eta,
582	length,
583	girth,
584	});
585	self.gain(0.0, 0.0, profile.foreskin_growth);
586	Outcome::json(
587	StatusCode::ACCEPTED,
588	json!({
589	"detail": "Gains have been queued. They may arrive.",
590	"eta_turns": eta,
591	}),
592	)
593	};
594	Ok(outcome.header(SERVER_TIMING, timing))
595	}
596
597	fn scaled_gains(&self, profile: &Profile, intensity: i32) -> (f64, f64) {
598	let scale = f64::from(intensity);
599	let (mut length, mut girth) = (profile.length * scale, profile.girth * scale);
600	let greed = if self.eq > HOT_EQ {
601	GREED_HOT
602	} else if self.eq > DANGER_EQ {
603	GREED_WARM
604	} else {
605	1.0
606	};
607	length *= greed;
608	girth *= greed;
609	if self.here.teapot {
610	length *= 0.5;
611	girth *= 1.5;
612	}
613	if self.items.ring {
614	girth *= 2.0;
615	}
616	(length, girth)
617	}
618
619	fn critical_failure(&mut self, training: Training, profile: &Profile) -> Problem {
620	let uses_foreskin = profile.foreskin.is_some_and(\|(min, _)\| min > 0.0);
621	if uses_foreskin && self.foreskin.is_some() {
622	self.foreskin = None;
623	self.shame += 25;
624	return Problem::new(
625	StatusCode::GONE,
626	"foreskin-lost",
627	"The technique has removed the foreskin. It will not be returning.",
628	)
629	.header(header::CONTENT_LOCATION, self.path("/foreskin"));
630	}
631	if self.eq > DANGER_EQ {
632	return self.rupture();
633	}
634	if training == Training::Stretch && !self.here.teapot {
635	self.here.teapot = true;
636	self.items.teapot_spout = true;
637	self.shame += 5;
638	return Problem::new(
639	StatusCode::IM_A_TEAPOT,
640	"teapot",
641	"The subject is now short and stout. Length gains are halved for the rest of the floor.",
642	);
643	}
644	if training == Training::Uli && !self.conditions.peyronie {
645	self.conditions.peyronie = true;
646	self.shame += 5;
647	return Problem::new(
648	StatusCode::MISDIRECTED_REQUEST,
649	"curvature",
650	"A curvature has developed. Techniques will land slightly to the left until a professional is consulted.",
651	);
652	}
653	not_extended()
654	}
655
656	fn gossip(&mut self, mut outcome: Outcome) -> Outcome {
657	let reportable = matches!(outcome.status.as_u16(), 200 \| 202 \| 206);
658	if !self.here.brother_told \|\| !reportable {
659	return outcome;
660	}
661	self.here.brother_told = false;
662	outcome.status = StatusCode::ALREADY_REPORTED;
663	if let Payload::Json(body) = &mut outcome.payload {
664	body["detail"] = json!("Your brother has already told Mum.");
665	}
666	outcome
667	}
668	}