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, BURN_RUPTURE, CAT_TAKES_TOWEL, CHANGING_ROOM_CHILL,
        DANGER_EQ, EQ_BAND, EQ_WOBBLE, EXTENDER_GAIN, FRICTION_BURN, FRICTION_BURN_AT,
        FRICTION_DRY, FRICTION_GRIP, FRICTION_HOLD, FRICTION_MAX, FRICTION_MEDITATE, FRICTION_SPIT,
        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.chafe(lube);
        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.chafe(lube);
        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(())
    }

    fn chafe(&mut self, lube: Option<Lube>) {
        let mut friction = match lube {
            None => FRICTION_DRY,
            Some(Lube::Spit) => FRICTION_SPIT,
            Some(_) => 0,
        };
        if friction > 0 && self.jelq_grip.is_some_and(|grip| grip != self.grip) {
            friction -= FRICTION_GRIP;
        }
        self.jelq_grip = Some(self.grip);
        self.friction = (self.friction + friction).min(FRICTION_MAX);
        if self.friction >= FRICTION_BURN_AT
            && !self.conditions.friction_burn
            && self.chance(FRICTION_BURN)
        {
            self.conditions.friction_burn = true;
        }
    }

    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.shed(FRICTION_HOLD);
        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.shed(FRICTION_MEDITATE);
        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 burn = if self.conditions.friction_burn {
            BURN_RUPTURE
        } else {
            0
        };
        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 - burn {
            return Err(timed(self.rupture()));
        }
        if self.eq > rupture_line - burn && 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;
        }
        if self.conditions.friction_burn {
            length *= 0.5;
            girth *= 0.5;
        }
        (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, BURN_RUPTURE, CAT_TAKES_TOWEL, CHANGING_ROOM_CHILL,
11	DANGER_EQ, EQ_BAND, EQ_WOBBLE, EXTENDER_GAIN, FRICTION_BURN, FRICTION_BURN_AT,
12	FRICTION_DRY, FRICTION_GRIP, FRICTION_HOLD, FRICTION_MAX, FRICTION_MEDITATE, FRICTION_SPIT,
13	GREED_HOT, GREED_WARM, HOLD_EQ, HOT_EQ, MEDITATION_EQ, OBSERVED, PRIAPISM_EQ,
14	PRIAPISM_TURNS, PULLED_MUSCLE, PULLED_MUSCLE_INTENSITY, REFLECTION, RING_PRIAPISM,
15	RING_RUPTURE_LINE, RUPTURE_LINE, STORAGE_GIRTH, SUSPICION_LIMIT,
16	},
17	not_extended, round3,
18	state::{MumVisit, Observer, Pending},
19	techniques::{LubeRule, Profile, Training, Utility},
20	};
21	use crate::{headers::SERVER_TIMING, problem::Problem};
22
23	impl Run {
24	pub fn jelq(
25	&mut self,
26	techniques: &[Technique],
27	intensity: i32,
28	lube: Option<Lube>,
29	now: Instant,
30	) -> Result<Outcome, Problem> {
31	self.check_refractory(now)?;
32	if self.story == Story::Pending {
33	return Ok(self.branch_offer());
34	}
35	if self.floor == Floor::Forum {
36	return Ok(Outcome::json(
37	StatusCode::SEE_OTHER,
38	json!({ "detail": "Refer to the forum." }),
39	)
40	.header(header::LOCATION, super::FORUM_THREAD));
41	}
42	if self.items.cage {
43	return Err(Problem::new(
44	StatusCode::LOCKED,
45	"caged",
46	"The cage is locked. The key is not in the box.",
47	));
48	}
49	self.here.shopping = false;
50	match *techniques {
51	[Technique::Utility(utility)] => self.utility(utility, lube, now),
52	[Technique::Training(training)] => self.single(training, intensity, lube, now),
53	[Technique::Training(a), Technique::Training(b)] => {
54	self.combo(a, b, intensity, lube, now)
55	}
56	[_, _] => Err(Problem::new(
57	StatusCode::BAD_REQUEST,
58	"combo-invalid",
59	"Only training techniques can be combined.",
60	)),
61	_ => Err(Problem::new(
62	StatusCode::BAD_REQUEST,
63	"too-many-techniques",
64	"Two techniques at most. The server has limits even if you do not.",
65	)),
66	}
67	}
68
69	fn utility(
70	&mut self,
71	utility: Utility,
72	lube: Option<Lube>,
73	now: Instant,
74	) -> Result<Outcome, Problem> {
75	match utility {
76	Utility::Warmup => return self.warm_up(),
77	Utility::Ice => return self.ice(),
78	Utility::Supplement => return self.supplement(),
79	Utility::Meditate => return self.meditate(),
80	Utility::Energy => return self.energy(),
81	Utility::Edge \| Utility::Pump => {}
82	}
83	if utility == Utility::Pump {
84	self.here.edges = 0;
85	}
86	self.ready(Technique::Utility(utility), lube)?;
87	self.check_storage()?;
88	self.floor_enemy()?;
89	match utility {
90	Utility::Edge => self.edge(now),
91	_ => self.pump(now),
92	}
93	}
94
95	fn single(
96	&mut self,
97	training: Training,
98	intensity: i32,
99	lube: Option<Lube>,
100	now: Instant,
101	) -> Result<Outcome, Problem> {
102	self.here.edges = 0;
103	self.ready(Technique::Training(training), lube)?;
104	self.take_lube(lube)?;
105	self.check_storage()?;
106	self.floor_enemy()?;
107	self.chafe(lube);
108	self.commit(intensity, lube, now, 1);
109	if let ControlFlow::Break(interrupted) = self.mishaps(training, intensity)? {
110	return Ok(interrupted);
111	}
112	if let ControlFlow::Break(interrupted) = self.hazards(intensity)? {
113	return Ok(interrupted);
114	}
115	let outcome = self.roll(training, intensity, lube)?;
116	Ok(self.gossip(outcome))
117	}
118
119	fn combo(
120	&mut self,
121	a: Training,
122	b: Training,
123	intensity: i32,
124	lube: Option<Lube>,
125	now: Instant,
126	) -> Result<Outcome, Problem> {
127	if a == b {
128	return Err(Problem::new(
129	StatusCode::BAD_REQUEST,
130	"combo-invalid",
131	"A technique cannot be combined with itself. The server has checked.",
132	));
133	}
134	self.here.edges = 0;
135	self.ready(Technique::Training(a), lube)?;
136	self.ready(Technique::Training(b), lube)?;
137	self.take_lube(lube)?;
138	self.check_storage()?;
139	self.floor_enemy()?;
140	self.chafe(lube);
141	self.commit(intensity, lube, now, 2);
142	for training in [a, b] {
143	if let ControlFlow::Break(interrupted) = self.mishaps(training, intensity)? {
144	return Ok(interrupted);
145	}
146	}
147	if let ControlFlow::Break(interrupted) = self.hazards(intensity)? {
148	return Ok(interrupted);
149	}
150
151	let mut statuses = Vec::new();
152	for training in [a, b] {
153	let result = self.roll(training, intensity, lube);
154	if self.ended.is_some() {
155	return result;
156	}
157	let status = match result {
158	Ok(outcome) => self.gossip(outcome).status,
159	Err(problem) => problem.status(),
160	};
161	statuses.push((training, status));
162	}
163
164	let mut xml = String::from(
165	"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<D:multistatus xmlns:D=\"DAV:\">\n",
166	);
167	for (training, status) in statuses {
168	let _ = write!(
169	xml,
170	" <D:response>\n <D:href>{}?technique={}</D:href>\n <D:status>HTTP/1.1 {} {}</D:status>\n </D:response>\n",
171	self.path(""),
172	training.name(),
173	status.as_u16(),
174	crate::problem::reason(status),
175	);
176	}
177	xml.push_str(
178	" <D:responsedescription>Each technique has been reported separately.</D:responsedescription>\n</D:multistatus>\n",
179	);
180	Ok(Outcome::raw(
181	StatusCode::MULTI_STATUS,
182	"application/xml; charset=utf-8",
183	xml,
184	))
185	}
186
187	fn ready(&self, technique: Technique, lube: Option<Lube>) -> Result<(), Problem> {
188	self.access(technique)?;
189	match technique {
190	Technique::Training(training) => Self::check_lube(training, lube),
191	Technique::Utility(_) => Ok(()),
192	}
193	}
194
195	/// Whether the run could attempt the technique now, ignoring the lubricant.
196	fn access(&self, technique: Technique) -> Result<(), Problem> {
197	if technique == Technique::Training(Training::Uli) && !self.forum_read() {
198	return Err(Problem::new(
199	StatusCode::FORBIDDEN,
200	"technique-locked",
201	"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.",
202	));
203	}
204	if technique == Technique::Utility(Utility::Meditate) {
205	return if self.meditation_taught {
206	Ok(())
207	} else {
208	Err(Problem::new(
209	StatusCode::FORBIDDEN,
210	"technique-locked",
211	"The breathing technique is described in one of the forum's replies. You have not found it.",
212	))
213	};
214	}
215	if !self.warmed_up {
216	return Err(Problem::new(
217	StatusCode::PRECONDITION_FAILED,
218	"cold-start",
219	"Warm-up was skipped. The server has noted this.",
220	)
221	.with("technique", Utility::Warmup.name()));
222	}
223	match technique {
224	Technique::Utility(Utility::Pump) if !self.items.pump_pro => Err(Problem::new(
225	StatusCode::FAILED_DEPENDENCY,
226	"no-pump",
227	"The pump technique depends on a pump.",
228	)),
229	Technique::Utility(_) => Ok(()),
230	Technique::Training(training) => match training.profile().foreskin {
231	Some((min, max)) => self.check_foreskin(min, max),
232	None => Ok(()),
233	},
234	}
235	}
236
237	fn check_lube(training: Training, lube: Option<Lube>) -> Result<(), Problem> {
238	match (training.profile().lube, lube) {
239	(LubeRule::Required, None) => Err(Problem::new(
240	StatusCode::UNSUPPORTED_MEDIA_TYPE,
241	"lubricant-required",
242	format!(
243	"The {} technique requires a lubricant. None was declared.",
244	training.name()
245	),
246	)
247	.with("lubricants", json!(LUBRICANTS))),
248	(LubeRule::Forbidden, Some(_)) => Err(Problem::new(
249	StatusCode::UNSUPPORTED_MEDIA_TYPE,
250	"lubricant-declared",
251	format!(
252	"The {} technique was requested. A lubricant was declared.",
253	training.name()
254	),
255	)),
256	_ => Ok(()),
257	}
258	}
259
260	/// One unit of whatever was declared. Spit is free and the tap is always on.
261	fn take_lube(&mut self, lube: Option<Lube>) -> Result<(), Problem> {
262	let (held, name) = match lube {
263	None \| Some(Lube::Spit) => return Ok(()),
264	Some(Lube::BabyOil) => (&mut self.items.baby_oil, "baby-oil"),
265	Some(Lube::CoconutOil) => (&mut self.items.coconut_oil, "coconut-oil"),
266	Some(Lube::Lotion) => (&mut self.items.lotion, "lotion"),
267	Some(Lube::Vaseline) => (&mut self.items.vaseline, "vaseline"),
268	};
269	if *held == 0 {
270	return Err(Problem::new(
271	StatusCode::PRECONDITION_FAILED,
272	"lubricant-exhausted",
273	format!("{name} was declared, but the bottle is empty."),
274	));
275	}
276	*held -= 1;
277	Ok(())
278	}
279
280	/// The techniques a JELQ could use right now without being refused before the roll.
281	pub fn techniques_now(&self, now: Instant) -> Vec<Technique> {
282	let blocked = !self.floor.timed()
283	\|\| self.items.cage
284	\|\| self.refractory_until.is_some_and(\|until\| now < until);
285	if blocked {
286	return Vec::new();
287	}
288	Technique::ALL
289	.into_iter()
290	.filter(\|&technique\| match technique {
291	Technique::Utility(Utility::Warmup) => true,
292	Technique::Utility(Utility::Ice) => self.items.ice_packs > 0,
293	Technique::Utility(Utility::Supplement) => self.items.supplements > 0,
294	Technique::Utility(Utility::Meditate) => {
295	self.meditation_taught && !self.here.meditated
296	}
297	Technique::Utility(Utility::Energy) => self.items.energy_drinks > 0,
298	_ => self.access(technique).is_ok() && self.check_storage().is_ok(),
299	})
300	.collect()
301	}
302
303	fn check_foreskin(&self, min: f64, max: f64) -> Result<(), Problem> {
304	let Some(f) = self.foreskin else {
305	if min <= 0.0 {
306	return Ok(());
307	}
308	return Err(Problem::new(
309	StatusCode::GONE,
310	"foreskin-gone",
311	"This technique requires a foreskin. The foreskin is gone.",
312	)
313	.header(header::CONTENT_LOCATION, self.path("/foreskin")));
314	};
315	if f < min {
316	return Err(Problem::new(
317	StatusCode::LENGTH_REQUIRED,
318	"foreskin-insufficient",
319	format!(
320	"The selected technique requires {min:.1} units of foreskin. {f:.2} units are available. The server has noted the shortfall."
321	),
322	)
323	.with("required", min));
324	}
325	if f > max {
326	return Err(Problem::new(
327	StatusCode::PAYLOAD_TOO_LARGE,
328	"foreskin-excessive",
329	format!(
330	"The selected technique tolerates at most {max:.1} units of foreskin. {f:.2} units are present."
331	),
332	)
333	.with("maximum", max));
334	}
335	Ok(())
336	}
337
338	fn check_storage(&self) -> Result<(), Problem> {
339	if self.items.extender && self.girth > STORAGE_GIRTH {
340	return Err(Problem::new(
341	StatusCode::INSUFFICIENT_STORAGE,
342	"jeans-full",
343	"The jeans are full. The extender is occupying the remaining storage.",
344	)
345	.with("extender", self.path("/inventory/extender")));
346	}
347	Ok(())
348	}
349
350	fn chafe(&mut self, lube: Option<Lube>) {
351	let mut friction = match lube {
352	None => FRICTION_DRY,
353	Some(Lube::Spit) => FRICTION_SPIT,
354	Some(_) => 0,
355	};
356	if friction > 0 && self.jelq_grip.is_some_and(\|grip\| grip != self.grip) {
357	friction -= FRICTION_GRIP;
358	}
359	self.jelq_grip = Some(self.grip);
360	self.friction = (self.friction + friction).min(FRICTION_MAX);
361	if self.friction >= FRICTION_BURN_AT
362	&& !self.conditions.friction_burn
363	&& self.chance(FRICTION_BURN)
364	{
365	self.conditions.friction_burn = true;
366	}
367	}
368
369	pub(super) fn commit(&mut self, intensity: i32, lube: Option<Lube>, now: Instant, cost: i32) {
370	self.touch();
371	self.turn += 1;
372	self.here.turns += 1;
373	self.realise();
374	if self.items.extender {
375	self.length += EXTENDER_GAIN;
376	}
377	self.stamina -= cost + i32::from(lube == Some(Lube::Lotion));
378	if self.stamina <= 0 {
379	self.exhaust(now);
380	}
381	let chill = if self.floor == Floor::ChangingRoom {
382	CHANGING_ROOM_CHILL
383	} else {
384	0
385	};
386	let wobble = self.rng.random_range(-EQ_WOBBLE..=EQ_WOBBLE);
387	self.eq = (self.eq + intensity * 2 - 6 - chill + wobble).clamp(0, 100);
388
389	let mut suspicion = intensity / 5 + i32::from(lube == Some(Lube::Vaseline));
390	if matches!(self.floor, Floor::ChangingRoom \| Floor::Nans) {
391	suspicion *= 2;
392	}
393	if self.floor == Floor::Nans && lube == Some(Lube::CoconutOil) {
394	suspicion += 2;
395	}
396	let was_below = self.suspicion < SUSPICION_LIMIT;
397	self.suspicion =
398	u8::try_from((i32::from(self.suspicion) + suspicion).min(i32::from(SUSPICION_LIMIT)))
399	.unwrap_or(SUSPICION_LIMIT);
400
401	if intensity >= PULLED_MUSCLE_INTENSITY
402	&& !self.conditions.pulled_muscle
403	&& self.chance(PULLED_MUSCLE)
404	{
405	self.conditions.pulled_muscle = true;
406	self.stamina = self.stamina.min(self.max_stamina());
407	}
408	self.settle(was_below);
409	}
410
411	/// The part of a turn the house takes part in, whatever the action was.
412	pub(super) fn settle(&mut self, was_below: bool) {
413	self.maybe_summon_mum(was_below);
414	if let Some(observer) = self.floor.observer()
415	&& self.chance(OBSERVED)
416	{
417	self.observed = Some(observer);
418	self.shame += 1;
419	if observer == Observer::Cat && self.chance(CAT_TAKES_TOWEL) {
420	self.here.towel_stolen = true;
421	}
422	}
423	if self.items.ring && self.eq > HOT_EQ && self.chance(RING_PRIAPISM) {
424	self.conditions.priapism_turns = PRIAPISM_TURNS;
425	}
426	if self.conditions.priapism_turns > 0 {
427	self.conditions.priapism_turns -= 1;
428	self.eq = self.eq.max(PRIAPISM_EQ);
429	}
430	if self.turn == BRANCH_TURN && self.story == Story::Unopened {
431	self.story = Story::Pending;
432	self.notices
433	.push("Somewhere, a forum thread from 2009 still has replies.");
434	}
435	}
436
437	/// HOLD. A pause between strokes, offered when the band has been left or the stamina is gone.
438	pub fn can_hold(&self) -> bool {
439	self.eq > DANGER_EQ \|\| self.stamina <= 2
440	}
441
442	pub fn hold(&mut self, now: Instant) -> Result<Outcome, Problem> {
443	self.check_refractory(now)?;
444	if self.story == Story::Pending {
445	return Ok(self.branch_offer());
446	}
447	if self.items.cage {
448	return Err(Problem::new(
449	StatusCode::LOCKED,
450	"caged",
451	"The cage is locked. The key is not in the box.",
452	));
453	}
454	self.touch();
455	self.turn += 1;
456	self.here.turns += 1;
457	self.realise();
458	let was_below = self.suspicion < SUSPICION_LIMIT;
459	if self.chance(REFLECTION) {
460	self.eq = 0;
461	self.shame += 1;
462	self.notices
463	.push("the count reached ten, and then the reflection started");
464	} else {
465	self.eq = (self.eq - HOLD_EQ).clamp(0, 100);
466	}
467	self.stamina = (self.stamina + 1).min(self.max_stamina());
468	self.shed(FRICTION_HOLD);
469	self.settle(was_below);
470	Ok(Outcome::empty(StatusCode::NO_CONTENT))
471	}
472
473	/// The breathing technique from the forum's replies. It spends no stamina and the turn is
474	/// not the floor's, but each floor allows it once.
475	fn meditate(&mut self) -> Result<Outcome, Problem> {
476	self.access(Technique::Utility(Utility::Meditate))?;
477	if self.here.meditated {
478	return Err(Problem::new(
479	StatusCode::CONFLICT,
480	"already-meditated",
481	"This floor has had its meditation.",
482	));
483	}
484	self.here.meditated = true;
485	self.eq = (self.eq - MEDITATION_EQ).clamp(0, 100);
486	self.shed(FRICTION_MEDITATE);
487	self.touch();
488	Ok(Outcome::json(
489	StatusCode::OK,
490	json!({
491	"detail": "In through the nose, out through the mouth. EQ falls by ten.",
492	}),
493	))
494	}
495
496	pub(super) fn maybe_summon_mum(&mut self, was_below: bool) {
497	if !self.floor.has_mum() \|\| self.mum.is_some() {
498	return;
499	}
500	let summoned = was_below && self.suspicion == SUSPICION_LIMIT;
501	let mut visits = u32::from(self.suspicion) + 1;
502	if self.here.brother_told {
503	visits *= 2;
504	}
505	if summoned \|\| self.rng.random_ratio(visits, super::balance::MUM_VISIT) {
506	let errand = self.errand(summoned);
507	let nonce = self.fresh_nonce();
508	self.mum = Some(MumVisit {
509	errand,
510	nonce,
511	strikes: 0,
512	knocked: false,
513	});
514	}
515	}
516
517	fn roll(
518	&mut self,
519	training: Training,
520	intensity: i32,
521	lube: Option<Lube>,
522	) -> Result<Outcome, Problem> {
523	let profile = training.profile();
524	let natural: i32 = self.rng.random_range(1..=20);
525	let band = if EQ_BAND.contains(&self.eq) {
526	BAND_BONUS
527	} else {
528	0
529	};
530	let grip = match (self.grip, training) {
531	(Grip::Underhand, Training::Stretch) => 2,
532	(Grip::Underhand, Training::Wet) => -1,
533	_ => 0,
534	};
535	let arrival = if self.here.warm_arrival {
536	self.here.warm_arrival = false;
537	ARRIVAL_BONUS
538	} else {
539	0
540	};
541	let modifier = lube.map_or(0, Lube::modifier) + band + grip + arrival;
542	let dc = profile.dc + intensity / 3;
543	let total = natural + modifier;
544	let timing = format!("roll;desc=\"d20{modifier:+} vs {dc}\";dur={natural}");
545	let timed = \|p: Problem\| p.header(SERVER_TIMING, &timing);
546
547	let (length, girth) = self.scaled_gains(&profile, intensity);
548	let burn = if self.conditions.friction_burn {
549	BURN_RUPTURE
550	} else {
551	0
552	};
553	let rupture_line = if self.items.ring {
554	RING_RUPTURE_LINE
555	} else {
556	RUPTURE_LINE
557	};
558
559	if natural == 1 {
560	return Err(timed(self.critical_failure(training, &profile)));
561	}
562	if natural == 2 && self.eq > DANGER_EQ - burn {
563	return Err(timed(self.rupture()));
564	}
565	if self.eq > rupture_line - burn && total < dc {
566	return Err(timed(self.rupture()));
567	}
568	if natural == 20 {
569	self.gain(length * 2.0, girth * 2.0, profile.foreskin_growth);
570	return Ok(Outcome::json(
571	StatusCode::PERMANENT_REDIRECT,
572	json!({
573	"detail": "Your length has moved permanently.",
574	"length": round3(length * 2.0),
575	"girth": round3(girth * 2.0),
576	}),
577	)
578	.header(header::LOCATION, self.path("/length"))
579	.header(SERVER_TIMING, timing));
580	}
581	if total < dc - 3 {
582	return Err(timed(not_extended()));
583	}
584	if total < dc {
585	return Ok(Outcome::empty(StatusCode::NO_CONTENT).header(SERVER_TIMING, timing));
586	}
587
588	let outcome = if self.eq < *EQ_BAND.start() {
589	self.gain(length / 2.0, girth / 2.0, profile.foreskin_growth);
590	Outcome::json(
591	StatusCode::PARTIAL_CONTENT,
592	json!({
593	"detail": "Partial gains were applied. EQ was below the band.",
594	"length": round3(length / 2.0),
595	"girth": round3(girth / 2.0),
596	}),
597	)
598	} else if total >= dc + 5 {
599	self.gain(length, girth, profile.foreskin_growth);
600	Outcome::json(
601	StatusCode::OK,
602	json!({
603	"detail": "Gains were applied.",
604	"length": round3(length),
605	"girth": round3(girth),
606	}),
607	)
608	} else {
609	let eta = self.rng.random_range(1..=4);
610	self.pending.push(Pending {
611	due: self.turn + eta,
612	length,
613	girth,
614	});
615	self.gain(0.0, 0.0, profile.foreskin_growth);
616	Outcome::json(
617	StatusCode::ACCEPTED,
618	json!({
619	"detail": "Gains have been queued. They may arrive.",
620	"eta_turns": eta,
621	}),
622	)
623	};
624	Ok(outcome.header(SERVER_TIMING, timing))
625	}
626
627	fn scaled_gains(&self, profile: &Profile, intensity: i32) -> (f64, f64) {
628	let scale = f64::from(intensity);
629	let (mut length, mut girth) = (profile.length * scale, profile.girth * scale);
630	let greed = if self.eq > HOT_EQ {
631	GREED_HOT
632	} else if self.eq > DANGER_EQ {
633	GREED_WARM
634	} else {
635	1.0
636	};
637	length *= greed;
638	girth *= greed;
639	if self.here.teapot {
640	length *= 0.5;
641	girth *= 1.5;
642	}
643	if self.items.ring {
644	girth *= 2.0;
645	}
646	if self.conditions.friction_burn {
647	length *= 0.5;
648	girth *= 0.5;
649	}
650	(length, girth)
651	}
652
653	fn critical_failure(&mut self, training: Training, profile: &Profile) -> Problem {
654	let uses_foreskin = profile.foreskin.is_some_and(\|(min, _)\| min > 0.0);
655	if uses_foreskin && self.foreskin.is_some() {
656	self.foreskin = None;
657	self.shame += 25;
658	return Problem::new(
659	StatusCode::GONE,
660	"foreskin-lost",
661	"The technique has removed the foreskin. It will not be returning.",
662	)
663	.header(header::CONTENT_LOCATION, self.path("/foreskin"));
664	}
665	if self.eq > DANGER_EQ {
666	return self.rupture();
667	}
668	if training == Training::Stretch && !self.here.teapot {
669	self.here.teapot = true;
670	self.items.teapot_spout = true;
671	self.shame += 5;
672	return Problem::new(
673	StatusCode::IM_A_TEAPOT,
674	"teapot",
675	"The subject is now short and stout. Length gains are halved for the rest of the floor.",
676	);
677	}
678	if training == Training::Uli && !self.conditions.peyronie {
679	self.conditions.peyronie = true;
680	self.shame += 5;
681	return Problem::new(
682	StatusCode::MISDIRECTED_REQUEST,
683	"curvature",
684	"A curvature has developed. Techniques will land slightly to the left until a professional is consulted.",
685	);
686	}
687	not_extended()
688	}
689
690	fn gossip(&mut self, mut outcome: Outcome) -> Outcome {
691	let reportable = matches!(outcome.status.as_u16(), 200 \| 202 \| 206);
692	if !self.here.brother_told \|\| !reportable {
693	return outcome;
694	}
695	self.here.brother_told = false;
696	outcome.status = StatusCode::ALREADY_REPORTED;
697	if let Payload::Json(body) = &mut outcome.payload {
698	body["detail"] = json!("Your brother has already told Mum.");
699	}
700	outcome
701	}
702	}