jelq

public

an http based roguelike rpg about jelqing

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use std::{
    hash::{DefaultHasher, Hash, Hasher},
    time::{Instant, SystemTime},
};

use axum::http::StatusCode;
use serde_json::{Value, json};

use super::{
    Body, Cause, Clinic, Ending, Floor, FloorState, Household, Item, Items, Notice, Observer,
    Online, RunStatus, Standing, Story,
    balance::{
        BRANCH_TURN, FLOOR_LIMIT, MAX_STAMINA, PRIAPISM_EQ, PULLED_STAMINA, REFRACTORY_STAMINA,
        SECOND_WIND, SELF_REPORT_INFLATION, STARTING_BABY_OIL, STARTING_EQ, STARTING_LUBE,
    },
    measure::round2,
    oracle::{Oracle, OracleTemplate, Roll},
};
use crate::problem::Problem;

pub struct Identity {
    /// The private id in the run's URL. Knowing it is the only authorisation a run has.
    pub(crate) id: String,
    pub(crate) public_id: String,
    pub(crate) seeded: bool,
    etag_salt: u64,
    pub(crate) version: u64,
    pub(crate) last_seen: Instant,
}

pub struct Run {
    pub(crate) ident: Identity,
    pub(crate) body: Body,
    pub(crate) standing: Standing,
    pub(crate) household: Household,
    pub(crate) online: Online,
    pub(crate) items: Items,
    pub(crate) clinic: Clinic,
    pub(crate) turn: u32,
    pub(crate) floor: Floor,
    pub(crate) here: FloorState,
    pub(crate) observed: Option<Observer>,
    pub(crate) notices: Vec<Notice>,
    pub(crate) ended: Option<Ending>,
    pub(super) oracle: Oracle,
}

impl Run {
    #[cfg(test)]
    pub fn new(id: String, public_id: String, seed: u64) -> Self {
        Self::with_oracle(id, public_id, seed, false, &OracleTemplate::Rng)
    }

    pub fn with_oracle(
        id: String,
        public_id: String,
        seed: u64,
        seeded: bool,
        template: &OracleTemplate,
    ) -> Self {
        let mut oracle = Oracle::build(template, seed);
        let length = round2(oracle.span(
            Run::unborn("length", "How long is it, in inches?"),
            4.5,
            6.5,
        ));
        let girth = round2(oracle.span(
            Run::unborn("girth", "How thick is it, in inches?"),
            4.0,
            5.0,
        ));
        let foreskin = round2(oracle.span(
            Run::unborn("foreskin", "How much foreskin is there, in inches?"),
            0.4,
            2.4,
        ));
        let mut items = Items::default();
        if oracle.chance(
            Run::unborn(
                "starting-lube",
                "Is there a bottle of lube in the drawer already?",
            ),
            STARTING_LUBE,
        ) {
            let baby_oil = oracle.chance(
                Run::unborn(
                    "starting-bottle",
                    "Is the bottle baby oil, rather than lotion?",
                ),
                STARTING_BABY_OIL,
            );
            items.grant(if baby_oil {
                Item::BabyOil
            } else {
                Item::Lotion
            });
        }
        let etag_salt = oracle.u64();
        Self {
            ident: Identity {
                id,
                public_id,
                seeded,
                etag_salt,
                version: 0,
                last_seen: Instant::now(),
            },
            body: Body::new(length, girth, foreskin),
            standing: Standing::default(),
            household: Household::default(),
            online: Online::default(),
            items,
            clinic: Clinic::default(),
            turn: 0,
            floor: Floor::Bedroom,
            here: FloorState::default(),
            observed: None,
            notices: Vec::new(),
            ended: None,
            oracle,
        }
    }

    fn unborn(site: &'static str, ask: &'static str) -> Roll {
        Roll {
            state: "A new run is being created. No game has been played yet.".into(),
            site,
            ask,
        }
    }

    fn etag_at(&self, version: u64) -> String {
        let mut hasher = DefaultHasher::new();
        (self.ident.etag_salt, version).hash(&mut hasher);
        format!("\"{:016x}\"", hasher.finish())
    }

    pub fn etag(&self) -> String {
        self.etag_at(self.ident.version)
    }

    /// The ETag the run had when it was created, which the true ending asks for.
    pub fn origin_etag(&self) -> String {
        self.etag_at(0)
    }

    pub fn touch(&mut self) {
        self.ident.version += 1;
    }

    pub(super) fn begin_turn(&mut self) -> Result<(), Problem> {
        self.check_clock()?;
        self.touch();
        self.turn += 1;
        self.here.turns += 1;
        self.body.torn = 0.0;
        self.standing.at_turn_start = self.standing.suspicion;
        self.realise(false);
        if self.floor.timed() && self.here.turns + 2 == FLOOR_LIMIT {
            self.notices.push(Notice::RunningLong(self.floor));
        } else if self.floor.timed() && self.here.turns + 1 == FLOOR_LIMIT {
            self.notices.push(Notice::LastTurn);
        }
        Ok(())
    }

    pub(super) fn shed(&mut self, friction: i32) {
        self.body.friction = (self.body.friction - friction).max(0);
    }

    /// Priapism holds EQ up no matter what else moves it.
    pub(super) fn reset_eq(&mut self, eq: i32) {
        let floor = if self.body.conditions.priapism_turns > 0 {
            PRIAPISM_EQ
        } else {
            0
        };
        self.body.eq = eq.max(floor);
    }

    pub(super) fn end_kitchen_visit(&mut self) {
        self.here.kitchen.melon_offered = false;
    }

    /// Going back to the jelq walks away from both the fridge and Pump-Bro.
    pub(super) fn step_away(&mut self) {
        self.end_kitchen_visit();
        self.here.shopping = false;
    }

    pub(super) fn fresh_nonce(&mut self) -> String {
        format!("{:016x}", self.oracle.u64())
    }

    /// One game decision. The dice ignore the state prose, so it is only written for the model.
    pub(super) fn decision(&self, site: &'static str, ask: &'static str) -> Roll {
        Roll {
            state: if self.oracle.listens() {
                self.oracle_state()
            } else {
                String::new()
            },
            site,
            ask,
        }
    }

    fn oracle_state(&self) -> String {
        let mut s = format!(
            "Floor {}, {}. Turn {}.\n\neq: {}\nstamina: {}\nfriction: {}\n",
            self.floor.number(),
            self.floor.place(),
            self.turn,
            self.body.eq,
            self.body.stamina,
            self.body.friction
        );
        let conditions = &self.body.conditions;
        for (active, line) in [
            (conditions.friction_burn, "friction burn: yes, untreated\n"),
            (conditions.priapism_turns > 0, "priapism: yes\n"),
            (conditions.peyronie, "peyronie's disease: yes\n"),
            (conditions.pulled_muscle, "pulled muscle: yes\n"),
        ] {
            if active {
                s.push_str(line);
            }
        }
        s.push_str(&format!(
            "suspicion: {}\nshame: {}\ngrip: {}\n",
            self.standing.suspicion,
            self.standing.shame,
            self.body.grip.name(),
        ));
        let held: Vec<&str> = self.items.owned().iter().map(|item| item.slug()).collect();
        if !held.is_empty() {
            s.push_str(&format!("items: {}\n", held.join(", ")));
        }
        if self.household.mum.is_some() {
            s.push_str("Mum is at the door\n");
        }
        s
    }

    pub(super) fn chance(&mut self, roll: Roll, odds: u32) -> bool {
        self.oracle.chance(roll, odds)
    }

    pub fn path(&self, sub: &str) -> String {
        format!("/runs/{}{sub}", self.ident.id)
    }

    pub fn current_length(&self) -> f64 {
        self.body.length + self.here.temp_length
    }

    pub fn self_reported(&self) -> f64 {
        self.current_length() + SELF_REPORT_INFLATION
    }

    pub fn shown_length(&self) -> f64 {
        if self.items.kit.ruler {
            self.current_length()
        } else {
            self.self_reported()
        }
    }

    pub fn max_stamina(&self) -> i32 {
        if self.body.conditions.pulled_muscle {
            PULLED_STAMINA
        } else {
            MAX_STAMINA
        }
    }

    pub fn forum_read(&self) -> bool {
        self.online.story == Story::ReadForum
    }

    pub fn thread_reachable(&self) -> bool {
        self.turn >= BRANCH_TURN
            || self.forum_read()
            || self.floor.number() >= Floor::Forum.number()
    }

    pub fn footage(&self) -> Option<(SystemTime, u64)> {
        let filmed = self.online.filmed_at?;
        let age = filmed.elapsed().map_or(0, |d| d.as_secs());
        Some((filmed, age))
    }

    pub fn status(&self) -> RunStatus {
        if self.ended.is_some() {
            RunStatus::Gone
        } else if self.clinic.cured {
            RunStatus::Normal
        } else if self.clinic.prescribed {
            RunStatus::Prescribed
        } else {
            RunStatus::Alive
        }
    }

    /// The parts of the run that its response headers do not already carry.
    pub fn view(&self) -> Value {
        let conditions: Vec<&str> = [
            (self.here.teapot, "short and stout"),
            (self.body.conditions.peyronie, "curved"),
            (self.items.kit.cage, "caged"),
            (self.body.conditions.priapism_turns > 0, "priapism"),
            (self.body.conditions.pulled_muscle, "pulled muscle"),
            (self.online.filmed_at.is_some(), "viral"),
        ]
        .into_iter()
        .filter_map(|(active, name)| active.then_some(name))
        .collect();
        json!({
            "public_id": self.ident.public_id,
            "status": self.status().name(),
            "turn": self.turn,
            "run_shame": self.standing.shame,
            "grip": self.body.grip.name(),
            "ranked": !self.ident.seeded,
            "conditions": conditions,
        })
    }

    pub fn end(&mut self, cause: Cause) -> Problem {
        self.ended = Some(Ending {
            cause,
            turn: self.turn,
        });
        cause.problem().with("turn", self.turn)
    }

    /// The refractory period is the next HOLD. Returns whether it rolled the second wind that refills stamina outright.
    pub(super) fn recover(&mut self) -> bool {
        self.body.exhausted = false;
        let second_wind = self.chance(
            self.decision(
                "second-wind",
                "Does the refractory period end in a second wind?",
            ),
            SECOND_WIND,
        );
        self.body.stamina = if second_wind {
            self.max_stamina()
        } else {
            let (lo, hi) = REFRACTORY_STAMINA;
            let back = self.oracle.span_int(
                self.decision(
                    "refractory",
                    "How much stamina comes back after the refractory period?",
                ),
                lo,
                hi,
            );
            back.min(self.max_stamina())
        };
        self.reset_eq(STARTING_EQ);
        second_wind
    }

    pub(super) fn check_exhausted(&self) -> Result<(), Problem> {
        if !self.body.exhausted {
            return Ok(());
        }
        Err(Problem::new(
            StatusCode::TOO_MANY_REQUESTS,
            "overtrained",
            "Stamina is exhausted. HOLD for the refractory period.",
        ))
    }

    pub(super) fn exhaust(&mut self) {
        self.body.stamina = 0;
        self.body.exhausted = true;
    }

    /// Leaving a floor lets time pass, so everything still queued arrives at once.
    pub(super) fn realise(&mut self, everything: bool) {
        let (due, waiting): (Vec<_>, Vec<_>) = std::mem::take(&mut self.body.pending)
            .into_iter()
            .partition(|p| everything || p.due <= self.turn);
        self.body.pending = waiting;
        for p in due {
            let foreskin = self.gain(p.length, p.girth, p.foreskin);
            let arrived = self.body.arrived.get_or_insert_default();
            arrived.length += p.length;
            arrived.girth += p.girth;
            if let Some(grown) = foreskin {
                *arrived.foreskin.get_or_insert(0.0) += grown;
            }
        }
    }

    /// The foreskin change it returns nets out whatever friction tore off this turn.
    pub(super) fn gain(&mut self, length: f64, girth: f64, foreskin: f64) -> Option<f64> {
        self.body.length += length;
        self.body.girth += girth;
        let torn = std::mem::take(&mut self.body.torn);
        let grown = match &mut self.body.foreskin {
            Some(f) => {
                *f += foreskin;
                foreskin
            }
            None => 0.0,
        };
        (grown != 0.0 || torn != 0.0).then_some(grown - torn)
    }

    pub(super) fn rupture(&mut self) -> Problem {
        let cause = Cause::Ruptured {
            ice_unused: self.items.stores.ice_packs > 0,
        };
        self.end(cause)
    }

    /// A run whose lock was poisoned by a panic mid-turn cannot be trusted to carry on.
    pub fn lose(&mut self) {
        if self.ended.is_none() {
            self.end(Cause::Lost);
        }
    }
}

1	use std::{
2	hash::{DefaultHasher, Hash, Hasher},
3	time::{Instant, SystemTime},
4	};
5
6	use axum::http::StatusCode;
7	use serde_json::{Value, json};
8
9	use super::{
10	Body, Cause, Clinic, Ending, Floor, FloorState, Household, Item, Items, Notice, Observer,
11	Online, RunStatus, Standing, Story,
12	balance::{
13	BRANCH_TURN, FLOOR_LIMIT, MAX_STAMINA, PRIAPISM_EQ, PULLED_STAMINA, REFRACTORY_STAMINA,
14	SECOND_WIND, SELF_REPORT_INFLATION, STARTING_BABY_OIL, STARTING_EQ, STARTING_LUBE,
15	},
16	measure::round2,
17	oracle::{Oracle, OracleTemplate, Roll},
18	};
19	use crate::problem::Problem;
20
21	pub struct Identity {
22	/// The private id in the run's URL. Knowing it is the only authorisation a run has.
23	pub(crate) id: String,
24	pub(crate) public_id: String,
25	pub(crate) seeded: bool,
26	etag_salt: u64,
27	pub(crate) version: u64,
28	pub(crate) last_seen: Instant,
29	}
30
31	pub struct Run {
32	pub(crate) ident: Identity,
33	pub(crate) body: Body,
34	pub(crate) standing: Standing,
35	pub(crate) household: Household,
36	pub(crate) online: Online,
37	pub(crate) items: Items,
38	pub(crate) clinic: Clinic,
39	pub(crate) turn: u32,
40	pub(crate) floor: Floor,
41	pub(crate) here: FloorState,
42	pub(crate) observed: Option<Observer>,
43	pub(crate) notices: Vec<Notice>,
44	pub(crate) ended: Option<Ending>,
45	pub(super) oracle: Oracle,
46	}
47
48	impl Run {
49	#[cfg(test)]
50	pub fn new(id: String, public_id: String, seed: u64) -> Self {
51	Self::with_oracle(id, public_id, seed, false, &OracleTemplate::Rng)
52	}
53
54	pub fn with_oracle(
55	id: String,
56	public_id: String,
57	seed: u64,
58	seeded: bool,
59	template: &OracleTemplate,
60	) -> Self {
61	let mut oracle = Oracle::build(template, seed);
62	let length = round2(oracle.span(
63	Run::unborn("length", "How long is it, in inches?"),
64	4.5,
65	6.5,
66	));
67	let girth = round2(oracle.span(
68	Run::unborn("girth", "How thick is it, in inches?"),
69	4.0,
70	5.0,
71	));
72	let foreskin = round2(oracle.span(
73	Run::unborn("foreskin", "How much foreskin is there, in inches?"),
74	0.4,
75	2.4,
76	));
77	let mut items = Items::default();
78	if oracle.chance(
79	Run::unborn(
80	"starting-lube",
81	"Is there a bottle of lube in the drawer already?",
82	),
83	STARTING_LUBE,
84	) {
85	let baby_oil = oracle.chance(
86	Run::unborn(
87	"starting-bottle",
88	"Is the bottle baby oil, rather than lotion?",
89	),
90	STARTING_BABY_OIL,
91	);
92	items.grant(if baby_oil {
93	Item::BabyOil
94	} else {
95	Item::Lotion
96	});
97	}
98	let etag_salt = oracle.u64();
99	Self {
100	ident: Identity {
101	id,
102	public_id,
103	seeded,
104	etag_salt,
105	version: 0,
106	last_seen: Instant::now(),
107	},
108	body: Body::new(length, girth, foreskin),
109	standing: Standing::default(),
110	household: Household::default(),
111	online: Online::default(),
112	items,
113	clinic: Clinic::default(),
114	turn: 0,
115	floor: Floor::Bedroom,
116	here: FloorState::default(),
117	observed: None,
118	notices: Vec::new(),
119	ended: None,
120	oracle,
121	}
122	}
123
124	fn unborn(site: &'static str, ask: &'static str) -> Roll {
125	Roll {
126	state: "A new run is being created. No game has been played yet.".into(),
127	site,
128	ask,
129	}
130	}
131
132	fn etag_at(&self, version: u64) -> String {
133	let mut hasher = DefaultHasher::new();
134	(self.ident.etag_salt, version).hash(&mut hasher);
135	format!("\"{:016x}\"", hasher.finish())
136	}
137
138	pub fn etag(&self) -> String {
139	self.etag_at(self.ident.version)
140	}
141
142	/// The ETag the run had when it was created, which the true ending asks for.
143	pub fn origin_etag(&self) -> String {
144	self.etag_at(0)
145	}
146
147	pub fn touch(&mut self) {
148	self.ident.version += 1;
149	}
150
151	pub(super) fn begin_turn(&mut self) -> Result<(), Problem> {
152	self.check_clock()?;
153	self.touch();
154	self.turn += 1;
155	self.here.turns += 1;
156	self.body.torn = 0.0;
157	self.standing.at_turn_start = self.standing.suspicion;
158	self.realise(false);
159	if self.floor.timed() && self.here.turns + 2 == FLOOR_LIMIT {
160	self.notices.push(Notice::RunningLong(self.floor));
161	} else if self.floor.timed() && self.here.turns + 1 == FLOOR_LIMIT {
162	self.notices.push(Notice::LastTurn);
163	}
164	Ok(())
165	}
166
167	pub(super) fn shed(&mut self, friction: i32) {
168	self.body.friction = (self.body.friction - friction).max(0);
169	}
170
171	/// Priapism holds EQ up no matter what else moves it.
172	pub(super) fn reset_eq(&mut self, eq: i32) {
173	let floor = if self.body.conditions.priapism_turns > 0 {
174	PRIAPISM_EQ
175	} else {
176	0
177	};
178	self.body.eq = eq.max(floor);
179	}
180
181	pub(super) fn end_kitchen_visit(&mut self) {
182	self.here.kitchen.melon_offered = false;
183	}
184
185	/// Going back to the jelq walks away from both the fridge and Pump-Bro.
186	pub(super) fn step_away(&mut self) {
187	self.end_kitchen_visit();
188	self.here.shopping = false;
189	}
190
191	pub(super) fn fresh_nonce(&mut self) -> String {
192	format!("{:016x}", self.oracle.u64())
193	}
194
195	/// One game decision. The dice ignore the state prose, so it is only written for the model.
196	pub(super) fn decision(&self, site: &'static str, ask: &'static str) -> Roll {
197	Roll {
198	state: if self.oracle.listens() {
199	self.oracle_state()
200	} else {
201	String::new()
202	},
203	site,
204	ask,
205	}
206	}
207
208	fn oracle_state(&self) -> String {
209	let mut s = format!(
210	"Floor {}, {}. Turn {}.\n\neq: {}\nstamina: {}\nfriction: {}\n",
211	self.floor.number(),
212	self.floor.place(),
213	self.turn,
214	self.body.eq,
215	self.body.stamina,
216	self.body.friction
217	);
218	let conditions = &self.body.conditions;
219	for (active, line) in [
220	(conditions.friction_burn, "friction burn: yes, untreated\n"),
221	(conditions.priapism_turns > 0, "priapism: yes\n"),
222	(conditions.peyronie, "peyronie's disease: yes\n"),
223	(conditions.pulled_muscle, "pulled muscle: yes\n"),
224	] {
225	if active {
226	s.push_str(line);
227	}
228	}
229	s.push_str(&format!(
230	"suspicion: {}\nshame: {}\ngrip: {}\n",
231	self.standing.suspicion,
232	self.standing.shame,
233	self.body.grip.name(),
234	));
235	let held: Vec<&str> = self.items.owned().iter().map(\|item\| item.slug()).collect();
236	if !held.is_empty() {
237	s.push_str(&format!("items: {}\n", held.join(", ")));
238	}
239	if self.household.mum.is_some() {
240	s.push_str("Mum is at the door\n");
241	}
242	s
243	}
244
245	pub(super) fn chance(&mut self, roll: Roll, odds: u32) -> bool {
246	self.oracle.chance(roll, odds)
247	}
248
249	pub fn path(&self, sub: &str) -> String {
250	format!("/runs/{}{sub}", self.ident.id)
251	}
252
253	pub fn current_length(&self) -> f64 {
254	self.body.length + self.here.temp_length
255	}
256
257	pub fn self_reported(&self) -> f64 {
258	self.current_length() + SELF_REPORT_INFLATION
259	}
260
261	pub fn shown_length(&self) -> f64 {
262	if self.items.kit.ruler {
263	self.current_length()
264	} else {
265	self.self_reported()
266	}
267	}
268
269	pub fn max_stamina(&self) -> i32 {
270	if self.body.conditions.pulled_muscle {
271	PULLED_STAMINA
272	} else {
273	MAX_STAMINA
274	}
275	}
276
277	pub fn forum_read(&self) -> bool {
278	self.online.story == Story::ReadForum
279	}
280
281	pub fn thread_reachable(&self) -> bool {
282	self.turn >= BRANCH_TURN
283	\|\| self.forum_read()
284	\|\| self.floor.number() >= Floor::Forum.number()
285	}
286
287	pub fn footage(&self) -> Option<(SystemTime, u64)> {
288	let filmed = self.online.filmed_at?;
289	let age = filmed.elapsed().map_or(0, \|d\| d.as_secs());
290	Some((filmed, age))
291	}
292
293	pub fn status(&self) -> RunStatus {
294	if self.ended.is_some() {
295	RunStatus::Gone
296	} else if self.clinic.cured {
297	RunStatus::Normal
298	} else if self.clinic.prescribed {
299	RunStatus::Prescribed
300	} else {
301	RunStatus::Alive
302	}
303	}
304
305	/// The parts of the run that its response headers do not already carry.
306	pub fn view(&self) -> Value {
307	let conditions: Vec<&str> = [
308	(self.here.teapot, "short and stout"),
309	(self.body.conditions.peyronie, "curved"),
310	(self.items.kit.cage, "caged"),
311	(self.body.conditions.priapism_turns > 0, "priapism"),
312	(self.body.conditions.pulled_muscle, "pulled muscle"),
313	(self.online.filmed_at.is_some(), "viral"),
314	]
315	.into_iter()
316	.filter_map(\|(active, name)\| active.then_some(name))
317	.collect();
318	json!({
319	"public_id": self.ident.public_id,
320	"status": self.status().name(),
321	"turn": self.turn,
322	"run_shame": self.standing.shame,
323	"grip": self.body.grip.name(),
324	"ranked": !self.ident.seeded,
325	"conditions": conditions,
326	})
327	}
328
329	pub fn end(&mut self, cause: Cause) -> Problem {
330	self.ended = Some(Ending {
331	cause,
332	turn: self.turn,
333	});
334	cause.problem().with("turn", self.turn)
335	}
336
337	/// The refractory period is the next HOLD. Returns whether it rolled the second wind that refills stamina outright.
338	pub(super) fn recover(&mut self) -> bool {
339	self.body.exhausted = false;
340	let second_wind = self.chance(
341	self.decision(
342	"second-wind",
343	"Does the refractory period end in a second wind?",
344	),
345	SECOND_WIND,
346	);
347	self.body.stamina = if second_wind {
348	self.max_stamina()
349	} else {
350	let (lo, hi) = REFRACTORY_STAMINA;
351	let back = self.oracle.span_int(
352	self.decision(
353	"refractory",
354	"How much stamina comes back after the refractory period?",
355	),
356	lo,
357	hi,
358	);
359	back.min(self.max_stamina())
360	};
361	self.reset_eq(STARTING_EQ);
362	second_wind
363	}
364
365	pub(super) fn check_exhausted(&self) -> Result<(), Problem> {
366	if !self.body.exhausted {
367	return Ok(());
368	}
369	Err(Problem::new(
370	StatusCode::TOO_MANY_REQUESTS,
371	"overtrained",
372	"Stamina is exhausted. HOLD for the refractory period.",
373	))
374	}
375
376	pub(super) fn exhaust(&mut self) {
377	self.body.stamina = 0;
378	self.body.exhausted = true;
379	}
380
381	/// Leaving a floor lets time pass, so everything still queued arrives at once.
382	pub(super) fn realise(&mut self, everything: bool) {
383	let (due, waiting): (Vec<_>, Vec<_>) = std::mem::take(&mut self.body.pending)
384	.into_iter()
385	.partition(\|p\| everything \|\| p.due <= self.turn);
386	self.body.pending = waiting;
387	for p in due {
388	let foreskin = self.gain(p.length, p.girth, p.foreskin);
389	let arrived = self.body.arrived.get_or_insert_default();
390	arrived.length += p.length;
391	arrived.girth += p.girth;
392	if let Some(grown) = foreskin {
393	*arrived.foreskin.get_or_insert(0.0) += grown;
394	}
395	}
396	}
397
398	/// The foreskin change it returns nets out whatever friction tore off this turn.
399	pub(super) fn gain(&mut self, length: f64, girth: f64, foreskin: f64) -> Option<f64> {
400	self.body.length += length;
401	self.body.girth += girth;
402	let torn = std::mem::take(&mut self.body.torn);
403	let grown = match &mut self.body.foreskin {
404	Some(f) => {
405	*f += foreskin;
406	foreskin
407	}
408	None => 0.0,
409	};
410	(grown != 0.0 \|\| torn != 0.0).then_some(grown - torn)
411	}
412
413	pub(super) fn rupture(&mut self) -> Problem {
414	let cause = Cause::Ruptured {
415	ice_unused: self.items.stores.ice_packs > 0,
416	};
417	self.end(cause)
418	}
419
420	/// A run whose lock was poisoned by a panic mid-turn cannot be trusted to carry on.
421	pub fn lose(&mut self) {
422	if self.ended.is_none() {
423	self.end(Cause::Lost);
424	}
425	}
426	}