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::{
        BAND_BONUS, BRANCH_TURN, CAT_TAKES_TOWEL, CHANGING_ROOM_CHILL, DANGER_EQ, EQ_BAND,
        EQ_WOBBLE, EXTENDER_GAIN, HOT_EQ, OBSERVED, PRIAPISM_EQ, PRIAPISM_TURNS, PULLED_MUSCLE,
        PULLED_MUSCLE_INTENSITY, 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.",
            ));
        }
        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::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.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.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",
                "This technique is discussed on the forum. You have not been to the forum.",
            ));
        }
        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(()),
        }
    }

    /// 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,
                _ => 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);
        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 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());
        }
        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;
        }
    }

    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 visits = u32::from(self.suspicion) + 1;
        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 modifier = lube.map_or(0, Lube::modifier) + band + grip;
        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);
        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.flatmate_told || !reportable {
            return outcome;
        }
        self.here.flatmate_told = false;
        outcome.status = StatusCode::ALREADY_REPORTED;
        if let Payload::Json(body) = &mut outcome.payload {
            body["detail"] = json!("The flatmate has already told everyone.");
        }
        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	BAND_BONUS, BRANCH_TURN, CAT_TAKES_TOWEL, CHANGING_ROOM_CHILL, DANGER_EQ, EQ_BAND,
11	EQ_WOBBLE, EXTENDER_GAIN, HOT_EQ, OBSERVED, PRIAPISM_EQ, PRIAPISM_TURNS, PULLED_MUSCLE,
12	PULLED_MUSCLE_INTENSITY, RING_PRIAPISM, RING_RUPTURE_LINE, RUPTURE_LINE, STORAGE_GIRTH,
13	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	match *techniques {
48	[Technique::Utility(utility)] => self.utility(utility, lube, now),
49	[Technique::Training(training)] => self.single(training, intensity, lube, now),
50	[Technique::Training(a), Technique::Training(b)] => {
51	self.combo(a, b, intensity, lube, now)
52	}
53	[_, _] => Err(Problem::new(
54	StatusCode::BAD_REQUEST,
55	"combo-invalid",
56	"Only training techniques can be combined.",
57	)),
58	_ => Err(Problem::new(
59	StatusCode::BAD_REQUEST,
60	"too-many-techniques",
61	"Two techniques at most. The server has limits even if you do not.",
62	)),
63	}
64	}
65
66	fn utility(
67	&mut self,
68	utility: Utility,
69	lube: Option<Lube>,
70	now: Instant,
71	) -> Result<Outcome, Problem> {
72	match utility {
73	Utility::Warmup => return self.warm_up(),
74	Utility::Ice => return self.ice(),
75	Utility::Supplement => return self.supplement(),
76	Utility::Edge \| Utility::Pump => {}
77	}
78	if utility == Utility::Pump {
79	self.here.edges = 0;
80	}
81	self.ready(Technique::Utility(utility), lube)?;
82	self.check_storage()?;
83	self.floor_enemy()?;
84	match utility {
85	Utility::Edge => self.edge(now),
86	_ => self.pump(now),
87	}
88	}
89
90	fn single(
91	&mut self,
92	training: Training,
93	intensity: i32,
94	lube: Option<Lube>,
95	now: Instant,
96	) -> Result<Outcome, Problem> {
97	self.here.edges = 0;
98	self.ready(Technique::Training(training), lube)?;
99	self.check_storage()?;
100	self.floor_enemy()?;
101	self.commit(intensity, lube, now, 1);
102	if let ControlFlow::Break(interrupted) = self.mishaps(training, intensity)? {
103	return Ok(interrupted);
104	}
105	if let ControlFlow::Break(interrupted) = self.hazards(intensity)? {
106	return Ok(interrupted);
107	}
108	let outcome = self.roll(training, intensity, lube)?;
109	Ok(self.gossip(outcome))
110	}
111
112	fn combo(
113	&mut self,
114	a: Training,
115	b: Training,
116	intensity: i32,
117	lube: Option<Lube>,
118	now: Instant,
119	) -> Result<Outcome, Problem> {
120	if a == b {
121	return Err(Problem::new(
122	StatusCode::BAD_REQUEST,
123	"combo-invalid",
124	"A technique cannot be combined with itself. The server has checked.",
125	));
126	}
127	self.here.edges = 0;
128	self.ready(Technique::Training(a), lube)?;
129	self.ready(Technique::Training(b), lube)?;
130	self.check_storage()?;
131	self.floor_enemy()?;
132	self.commit(intensity, lube, now, 2);
133	for training in [a, b] {
134	if let ControlFlow::Break(interrupted) = self.mishaps(training, intensity)? {
135	return Ok(interrupted);
136	}
137	}
138	if let ControlFlow::Break(interrupted) = self.hazards(intensity)? {
139	return Ok(interrupted);
140	}
141
142	let mut statuses = Vec::new();
143	for training in [a, b] {
144	let result = self.roll(training, intensity, lube);
145	if self.ended.is_some() {
146	return result;
147	}
148	let status = match result {
149	Ok(outcome) => self.gossip(outcome).status,
150	Err(problem) => problem.status(),
151	};
152	statuses.push((training, status));
153	}
154
155	let mut xml = String::from(
156	"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<D:multistatus xmlns:D=\"DAV:\">\n",
157	);
158	for (training, status) in statuses {
159	let _ = write!(
160	xml,
161	" <D:response>\n <D:href>{}?technique={}</D:href>\n <D:status>HTTP/1.1 {} {}</D:status>\n </D:response>\n",
162	self.path(""),
163	training.name(),
164	status.as_u16(),
165	crate::problem::reason(status),
166	);
167	}
168	xml.push_str(
169	" <D:responsedescription>Each technique has been reported separately.</D:responsedescription>\n</D:multistatus>\n",
170	);
171	Ok(Outcome::raw(
172	StatusCode::MULTI_STATUS,
173	"application/xml; charset=utf-8",
174	xml,
175	))
176	}
177
178	fn ready(&self, technique: Technique, lube: Option<Lube>) -> Result<(), Problem> {
179	self.access(technique)?;
180	match technique {
181	Technique::Training(training) => Self::check_lube(training, lube),
182	Technique::Utility(_) => Ok(()),
183	}
184	}
185
186	/// Whether the run could attempt the technique now, ignoring the lubricant.
187	fn access(&self, technique: Technique) -> Result<(), Problem> {
188	if technique == Technique::Training(Training::Uli) && !self.forum_read() {
189	return Err(Problem::new(
190	StatusCode::FORBIDDEN,
191	"technique-locked",
192	"This technique is discussed on the forum. You have not been to the forum.",
193	));
194	}
195	if !self.warmed_up {
196	return Err(Problem::new(
197	StatusCode::PRECONDITION_FAILED,
198	"cold-start",
199	"Warm-up was skipped. The server has noted this.",
200	)
201	.with("technique", Utility::Warmup.name()));
202	}
203	match technique {
204	Technique::Utility(Utility::Pump) if !self.items.pump_pro => Err(Problem::new(
205	StatusCode::FAILED_DEPENDENCY,
206	"no-pump",
207	"The pump technique depends on a pump.",
208	)),
209	Technique::Utility(_) => Ok(()),
210	Technique::Training(training) => match training.profile().foreskin {
211	Some((min, max)) => self.check_foreskin(min, max),
212	None => Ok(()),
213	},
214	}
215	}
216
217	fn check_lube(training: Training, lube: Option<Lube>) -> Result<(), Problem> {
218	match (training.profile().lube, lube) {
219	(LubeRule::Required, None) => Err(Problem::new(
220	StatusCode::UNSUPPORTED_MEDIA_TYPE,
221	"lubricant-required",
222	format!(
223	"The {} technique requires a lubricant. None was declared.",
224	training.name()
225	),
226	)
227	.with("lubricants", json!(LUBRICANTS))),
228	(LubeRule::Forbidden, Some(_)) => Err(Problem::new(
229	StatusCode::UNSUPPORTED_MEDIA_TYPE,
230	"lubricant-declared",
231	format!(
232	"The {} technique was requested. A lubricant was declared.",
233	training.name()
234	),
235	)),
236	_ => Ok(()),
237	}
238	}
239
240	/// The techniques a JELQ could use right now without being refused before the roll.
241	pub fn techniques_now(&self, now: Instant) -> Vec<Technique> {
242	let blocked = !self.floor.timed()
243	\|\| self.items.cage
244	\|\| self.refractory_until.is_some_and(\|until\| now < until);
245	if blocked {
246	return Vec::new();
247	}
248	Technique::ALL
249	.into_iter()
250	.filter(\|&technique\| match technique {
251	Technique::Utility(Utility::Warmup) => true,
252	Technique::Utility(Utility::Ice) => self.items.ice_packs > 0,
253	Technique::Utility(Utility::Supplement) => self.items.supplements > 0,
254	_ => self.access(technique).is_ok() && self.check_storage().is_ok(),
255	})
256	.collect()
257	}
258
259	fn check_foreskin(&self, min: f64, max: f64) -> Result<(), Problem> {
260	let Some(f) = self.foreskin else {
261	if min <= 0.0 {
262	return Ok(());
263	}
264	return Err(Problem::new(
265	StatusCode::GONE,
266	"foreskin-gone",
267	"This technique requires a foreskin. The foreskin is gone.",
268	)
269	.header(header::CONTENT_LOCATION, self.path("/foreskin")));
270	};
271	if f < min {
272	return Err(Problem::new(
273	StatusCode::LENGTH_REQUIRED,
274	"foreskin-insufficient",
275	format!(
276	"The selected technique requires {min:.1} units of foreskin. {f:.2} units are available. The server has noted the shortfall."
277	),
278	)
279	.with("required", min));
280	}
281	if f > max {
282	return Err(Problem::new(
283	StatusCode::PAYLOAD_TOO_LARGE,
284	"foreskin-excessive",
285	format!(
286	"The selected technique tolerates at most {max:.1} units of foreskin. {f:.2} units are present."
287	),
288	)
289	.with("maximum", max));
290	}
291	Ok(())
292	}
293
294	fn check_storage(&self) -> Result<(), Problem> {
295	if self.items.extender && self.girth > STORAGE_GIRTH {
296	return Err(Problem::new(
297	StatusCode::INSUFFICIENT_STORAGE,
298	"jeans-full",
299	"The jeans are full. The extender is occupying the remaining storage.",
300	)
301	.with("extender", self.path("/inventory/extender")));
302	}
303	Ok(())
304	}
305
306	pub(super) fn commit(&mut self, intensity: i32, lube: Option<Lube>, now: Instant, cost: i32) {
307	self.touch();
308	self.turn += 1;
309	self.here.turns += 1;
310	self.realise();
311	if self.items.extender {
312	self.length += EXTENDER_GAIN;
313	}
314	self.stamina -= cost + i32::from(lube == Some(Lube::Lotion));
315	if self.stamina <= 0 {
316	self.exhaust(now);
317	}
318	let chill = if self.floor == Floor::ChangingRoom {
319	CHANGING_ROOM_CHILL
320	} else {
321	0
322	};
323	let wobble = self.rng.random_range(-EQ_WOBBLE..=EQ_WOBBLE);
324	self.eq = (self.eq + intensity * 2 - 6 - chill + wobble).clamp(0, 100);
325
326	let mut suspicion = intensity / 5 + i32::from(lube == Some(Lube::Vaseline));
327	if matches!(self.floor, Floor::ChangingRoom \| Floor::Nans) {
328	suspicion *= 2;
329	}
330	if self.floor == Floor::Nans && lube == Some(Lube::CoconutOil) {
331	suspicion += 2;
332	}
333	let was_below = self.suspicion < SUSPICION_LIMIT;
334	self.suspicion =
335	u8::try_from((i32::from(self.suspicion) + suspicion).min(i32::from(SUSPICION_LIMIT)))
336	.unwrap_or(SUSPICION_LIMIT);
337	self.maybe_summon_mum(was_below);
338
339	if let Some(observer) = self.floor.observer()
340	&& self.chance(OBSERVED)
341	{
342	self.observed = Some(observer);
343	self.shame += 1;
344	if observer == Observer::Cat && self.chance(CAT_TAKES_TOWEL) {
345	self.here.towel_stolen = true;
346	}
347	}
348	if intensity >= PULLED_MUSCLE_INTENSITY
349	&& !self.conditions.pulled_muscle
350	&& self.chance(PULLED_MUSCLE)
351	{
352	self.conditions.pulled_muscle = true;
353	self.stamina = self.stamina.min(self.max_stamina());
354	}
355	if self.items.ring && self.eq > HOT_EQ && self.chance(RING_PRIAPISM) {
356	self.conditions.priapism_turns = PRIAPISM_TURNS;
357	}
358	if self.conditions.priapism_turns > 0 {
359	self.conditions.priapism_turns -= 1;
360	self.eq = self.eq.max(PRIAPISM_EQ);
361	}
362	if self.turn == BRANCH_TURN && self.story == Story::Unopened {
363	self.story = Story::Pending;
364	}
365	}
366
367	pub(super) fn maybe_summon_mum(&mut self, was_below: bool) {
368	if !self.floor.has_mum() \|\| self.mum.is_some() {
369	return;
370	}
371	let summoned = was_below && self.suspicion == SUSPICION_LIMIT;
372	let visits = u32::from(self.suspicion) + 1;
373	if summoned \|\| self.rng.random_ratio(visits, super::balance::MUM_VISIT) {
374	let errand = self.errand(summoned);
375	let nonce = self.fresh_nonce();
376	self.mum = Some(MumVisit {
377	errand,
378	nonce,
379	strikes: 0,
380	knocked: false,
381	});
382	}
383	}
384
385	fn roll(
386	&mut self,
387	training: Training,
388	intensity: i32,
389	lube: Option<Lube>,
390	) -> Result<Outcome, Problem> {
391	let profile = training.profile();
392	let natural: i32 = self.rng.random_range(1..=20);
393	let band = if EQ_BAND.contains(&self.eq) {
394	BAND_BONUS
395	} else {
396	0
397	};
398	let grip = match (self.grip, training) {
399	(Grip::Underhand, Training::Stretch) => 2,
400	(Grip::Underhand, Training::Wet) => -1,
401	_ => 0,
402	};
403	let modifier = lube.map_or(0, Lube::modifier) + band + grip;
404	let dc = profile.dc + intensity / 3;
405	let total = natural + modifier;
406	let timing = format!("roll;desc=\"d20{modifier:+} vs {dc}\";dur={natural}");
407	let timed = \|p: Problem\| p.header(SERVER_TIMING, &timing);
408
409	let (length, girth) = self.scaled_gains(&profile, intensity);
410	let rupture_line = if self.items.ring {
411	RING_RUPTURE_LINE
412	} else {
413	RUPTURE_LINE
414	};
415
416	if natural == 1 {
417	return Err(timed(self.critical_failure(training, &profile)));
418	}
419	if natural == 2 && self.eq > DANGER_EQ {
420	return Err(timed(self.rupture()));
421	}
422	if self.eq > rupture_line && total < dc {
423	return Err(timed(self.rupture()));
424	}
425	if natural == 20 {
426	self.gain(length * 2.0, girth * 2.0, profile.foreskin_growth);
427	return Ok(Outcome::json(
428	StatusCode::PERMANENT_REDIRECT,
429	json!({
430	"detail": "Your length has moved permanently.",
431	"length": round3(length * 2.0),
432	"girth": round3(girth * 2.0),
433	}),
434	)
435	.header(header::LOCATION, self.path("/length"))
436	.header(SERVER_TIMING, timing));
437	}
438	if total < dc - 3 {
439	return Err(timed(not_extended()));
440	}
441	if total < dc {
442	return Ok(Outcome::empty(StatusCode::NO_CONTENT).header(SERVER_TIMING, timing));
443	}
444
445	let outcome = if self.eq < *EQ_BAND.start() {
446	self.gain(length / 2.0, girth / 2.0, profile.foreskin_growth);
447	Outcome::json(
448	StatusCode::PARTIAL_CONTENT,
449	json!({
450	"detail": "Partial gains were applied. EQ was below the band.",
451	"length": round3(length / 2.0),
452	"girth": round3(girth / 2.0),
453	}),
454	)
455	} else if total >= dc + 5 {
456	self.gain(length, girth, profile.foreskin_growth);
457	Outcome::json(
458	StatusCode::OK,
459	json!({
460	"detail": "Gains were applied.",
461	"length": round3(length),
462	"girth": round3(girth),
463	}),
464	)
465	} else {
466	let eta = self.rng.random_range(1..=4);
467	self.pending.push(Pending {
468	due: self.turn + eta,
469	length,
470	girth,
471	});
472	self.gain(0.0, 0.0, profile.foreskin_growth);
473	Outcome::json(
474	StatusCode::ACCEPTED,
475	json!({
476	"detail": "Gains have been queued. They may arrive.",
477	"eta_turns": eta,
478	}),
479	)
480	};
481	Ok(outcome.header(SERVER_TIMING, timing))
482	}
483
484	fn scaled_gains(&self, profile: &Profile, intensity: i32) -> (f64, f64) {
485	let scale = f64::from(intensity);
486	let (mut length, mut girth) = (profile.length * scale, profile.girth * scale);
487	if self.here.teapot {
488	length *= 0.5;
489	girth *= 1.5;
490	}
491	if self.items.ring {
492	girth *= 2.0;
493	}
494	(length, girth)
495	}
496
497	fn critical_failure(&mut self, training: Training, profile: &Profile) -> Problem {
498	let uses_foreskin = profile.foreskin.is_some_and(\|(min, _)\| min > 0.0);
499	if uses_foreskin && self.foreskin.is_some() {
500	self.foreskin = None;
501	self.shame += 25;
502	return Problem::new(
503	StatusCode::GONE,
504	"foreskin-lost",
505	"The technique has removed the foreskin. It will not be returning.",
506	)
507	.header(header::CONTENT_LOCATION, self.path("/foreskin"));
508	}
509	if self.eq > DANGER_EQ {
510	return self.rupture();
511	}
512	if training == Training::Stretch && !self.here.teapot {
513	self.here.teapot = true;
514	self.items.teapot_spout = true;
515	self.shame += 5;
516	return Problem::new(
517	StatusCode::IM_A_TEAPOT,
518	"teapot",
519	"The subject is now short and stout. Length gains are halved for the rest of the floor.",
520	);
521	}
522	if training == Training::Uli && !self.conditions.peyronie {
523	self.conditions.peyronie = true;
524	self.shame += 5;
525	return Problem::new(
526	StatusCode::MISDIRECTED_REQUEST,
527	"curvature",
528	"A curvature has developed. Techniques will land slightly to the left until a professional is consulted.",
529	);
530	}
531	not_extended()
532	}
533
534	fn gossip(&mut self, mut outcome: Outcome) -> Outcome {
535	let reportable = matches!(outcome.status.as_u16(), 200 \| 202 \| 206);
536	if !self.here.flatmate_told \|\| !reportable {
537	return outcome;
538	}
539	self.here.flatmate_told = false;
540	outcome.status = StatusCode::ALREADY_REPORTED;
541	if let Payload::Json(body) = &mut outcome.payload {
542	body["detail"] = json!("The flatmate has already told everyone.");
543	}
544	outcome
545	}
546	}