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use std::{collections::HashMap, fmt::Display};
use rand::{seq::SliceRandom, thread_rng};
const MIN_CARD: u8 = 1;
const MAX_CARD: u8 = 104;
fn main() {
let mut players = Vec::from([
Player {
name: String::from("Curie"),
value_function: |card, line| line.push_cost(card).unwrap_or_default(),
hand: Default::default(),
score: 0,
},
Player {
name: String::from("Joe"),
value_function: |card, line| line.push_cost(card).unwrap_or_default(),
hand: Default::default(),
score: 0,
},
Player {
name: String::from("Jim"),
value_function: |card, line| line.push_cost(card).unwrap_or_default(),
hand: Default::default(),
score: 0,
},
Player {
name: String::from("Jill"),
value_function: |card, line| line.push_cost(card).unwrap_or_default(),
hand: Default::default(),
score: 0,
},
]);
let mut n = 0;
while players.iter().all(|p| p.score < 66) {
n += 1;
round(&mut players);
println!("Round {n}");
println!("Name Score");
for player in &mut *players {
println!("{:<6} {:02}", player.name, player.score);
}
}
}
fn round(players: &mut [Player]) {
let mut cards: Vec<u8> = (MIN_CARD..MAX_CARD).collect();
cards.shuffle(&mut thread_rng());
let deck = &mut cards.iter();
let mut state = deck
.take(5)
.copied()
.enumerate()
.map(Line::from)
.collect::<Vec<Line>>();
for player in &mut *players {
player.set_hand(deck.take(10).copied().collect());
println!("{}: {:?}", player.name, player.hand);
}
for (i, line) in state.iter().enumerate() {
println!("Line {i}: {line}");
}
while !players.iter().any(|p| p.hand.is_empty()) {
let cards: Vec<u8> = players.iter_mut().map(|p| p.evaluate(&state)).collect();
let mut played: Vec<(&mut Player, u8)> = players.iter_mut().zip(cards).collect();
played.sort_by_key(|p| p.1);
let mut actions = vec![HashMap::new(); state.len()];
let mut player_names = Vec::new();
print!("{:37}", "Table");
for (player, card) in played {
print!("{:>10}", player.name);
player_names.push(&player.name);
let line = state
.iter_mut()
.min_by_key(|line| (player.value_function)(card, line))
.unwrap();
actions[line.id].insert(&player.name, card);
if let Some(score) = line.push(card) {
player.score += score;
}
}
println!();
for (line, actions) in state.iter().zip(actions) {
let cards: String = line
.cards
.iter()
.fold(String::new(), |buf, c| format!("{buf}[{c:>3}]"));
print!("Line {cards:<32}");
for name in &player_names {
let card = actions
.get(name)
.map(|c| format!("[{c:>3}]"))
.unwrap_or("".to_string());
print!("{:>10}", card);
}
println!();
}
}
}
#[derive(Debug, Default)]
struct Line {
id: usize,
cards: Vec<u8>,
}
impl Line {
fn head(&self) -> &u8 {
self.cards.last().unwrap()
}
fn count(&self) -> u8 {
self.cards.len().try_into().unwrap()
}
fn push(&mut self, card: u8) -> Option<u8> {
let cost = self.push_cost(card);
if cost.is_some() {
self.cards.clear();
}
self.cards.push(card);
cost
}
fn push_cost(&self, card: u8) -> Option<u8> {
(self.count() >= 5 || card <= *self.head()).then_some(self.count())
}
}
impl Display for Line {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}: ", self.id)?;
self.cards
.iter()
.try_for_each(|card| write!(f, "[{card:03}]"))
}
}
impl From<(usize, u8)> for Line {
fn from((id, value): (usize, u8)) -> Self {
Self {
id,
cards: Vec::from([value]),
}
}
}
struct Player {
name: String,
value_function: fn(card: u8, line: &Line) -> u8,
hand: Vec<u8>,
score: u8,
}
impl Player {
fn set_hand(&mut self, mut hand: Vec<u8>) {
hand.sort();
self.hand = hand
}
fn evaluate(&mut self, state: &[Line]) -> u8 {
let value_function = self.value_function;
let mut cards = HashMap::new();
for card in &self.hand {
let mut valid_play_found = false;
for line in state {
if line.head() < card {
valid_play_found = true
} else if valid_play_found {
continue;
}
let value = value_function(*card, line);
cards
.entry(card)
.and_modify(|o| {
*o = value.max(*o);
})
.or_insert(value);
}
}
cards
.iter()
.max_by_key(|e| e.1)
.and_then(|e| self.hand.iter().position(|c| c == *e.0))
.map(|index| self.hand.remove(index))
.unwrap()
}
}
|
