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use super::traits::{Game, GameError, GamePhase, GameResult, GameState};
use crate::crash::{crash_point_from_uniform, payout, CrashState};
use serde::{Deserialize, Serialize};
use std::collections::{HashMap, VecDeque};
use std::sync::{Arc, Mutex};
use std::time::Instant;
/// Monotonic seconds. Injected so tests can drive a round without sleeping.
pub trait Clock: Send + Sync {
fn now(&self) -> f64;
}
pub struct RealClock {
origin: Instant,
}
impl RealClock {
pub fn new() -> Self {
Self {
origin: Instant::now(),
}
}
}
impl Clock for RealClock {
fn now(&self) -> f64 {
self.origin.elapsed().as_secs_f64()
}
}
/// A clock a test can move by hand. Clones share the same instant.
#[derive(Clone, Default)]
pub struct ManualClock {
seconds: Arc<Mutex<f64>>,
}
impl ManualClock {
pub fn new() -> Self {
Self::default()
}
pub fn set(&self, seconds: f64) {
*self.seconds.lock().unwrap() = seconds;
}
pub fn advance(&self, seconds: f64) {
*self.seconds.lock().unwrap() += seconds;
}
pub fn seconds(&self) -> f64 {
*self.seconds.lock().unwrap()
}
}
impl Clock for ManualClock {
fn now(&self) -> f64 {
self.seconds()
}
}
/// One crash round. Lives in the game session's `data` while it runs.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CrashRound {
pub bet: u64,
/// Drawn at start, revealed only when the round ends.
pub crash_point: f64,
pub started_at: f64,
/// `running`, `cashed`, `crashed` or `forfeit`.
pub phase: String,
pub result: String,
/// Live while running; frozen at the final value afterwards.
pub multiplier: f64,
pub payout: u64,
}
impl CrashRound {
pub fn new(bet: u64, crash_point: f64, started_at: f64) -> Self {
Self {
bet,
crash_point,
started_at,
phase: "running".to_string(),
result: "playing".to_string(),
multiplier: 1.0,
payout: 0,
}
}
pub fn is_running(&self) -> bool {
self.phase == "running"
}
pub fn cash_out(&mut self, multiplier: f64) -> u64 {
self.multiplier = multiplier;
self.payout = payout(self.bet, multiplier);
self.phase = "cashed".to_string();
self.result = "cashed".to_string();
self.payout
}
/// The round ended before the player could cash out.
pub fn crash(&mut self) {
self.multiplier = self.crash_point;
self.payout = 0;
self.phase = "crashed".to_string();
self.result = "crashed".to_string();
}
pub fn forfeit(&mut self) {
self.payout = 0;
self.phase = "forfeit".to_string();
self.result = "forfeit".to_string();
}
pub fn state(&self, session_id: &str, balance: i64) -> CrashState {
CrashState {
session_id: session_id.to_string(),
phase: self.phase.clone(),
bet: self.bet,
balance,
multiplier: self.multiplier,
potential: payout(self.bet, self.multiplier),
crash_point: if self.is_running() {
None
} else {
Some(self.crash_point)
},
payout: self.payout,
result: self.result.clone(),
}
}
pub fn to_json(&self) -> String {
serde_json::to_string(self).unwrap_or_default()
}
pub fn from_json(raw: &str) -> Result<Self, serde_json::Error> {
serde_json::from_str(raw)
}
}
/// Crash-point generator. Tests queue fixed uniforms; production draws random
/// ones. The visible crash point stays hidden until `poll` or cashout ends the
/// round.
pub struct CrashGame {
uniforms: VecDeque<f64>,
}
impl CrashGame {
pub fn new() -> Self {
Self {
uniforms: VecDeque::new(),
}
}
pub fn with_uniform(uniform: f64) -> Self {
Self::with_uniforms([uniform])
}
pub fn with_uniforms(uniforms: impl IntoIterator<Item = f64>) -> Self {
Self {
uniforms: uniforms.into_iter().collect(),
}
}
pub fn next_crash_point(&mut self) -> f64 {
let uniform = self
.uniforms
.pop_front()
.unwrap_or_else(rand::random::<f64>);
crash_point_from_uniform(uniform)
}
}
impl Game for CrashGame {
fn game_type(&self) -> &'static str {
"crash"
}
fn get_name(&self) -> &'static str {
"Crash"
}
fn get_description(&self) -> &'static str {
"Crash: cash out before the multiplier crashes."
}
fn prepare_state(&self, _username: &str, bet_amount: u64) -> GameState {
let mut data = HashMap::new();
data.insert("status".to_string(), "ready".to_string());
GameState {
session_id: String::new(),
game_type: "crash".to_string(),
bet_amount,
phase: GamePhase::WaitingToStart,
data,
}
}
fn process_action(
&self,
_state: &GameState,
_action: &str,
_params: &[&str],
) -> Result<GameState, GameError> {
Err(GameError::InvalidAction(
"Crash uses CRASH_CASHOUT and CRASH_FORFEIT".to_string(),
))
}
fn calculate_result(&self, _state: &GameState) -> Result<GameResult, GameError> {
Err(GameError::InternalError(
"Crash settles through CRASH_CASHOUT".to_string(),
))
}
}
|
