v2.3.0: add crash with local multiplier and pushed crash event

1 files changed, 189 insertions, 1 deletions

diff --git a/src/client/core.rs b/src/client/core.rs
index 77761b4..5f8c513 100644
--- a/src/client/core.rs
+++ b/src/client/core.rs
@@ -1,12 +1,14 @@
 use crate::client::games::manager::GameManager;
 use crate::client::games::response::{
-    parse_blackjack_response, parse_roulette_response, parse_spin_response,
+    parse_blackjack_response, parse_crash_response, parse_roulette_response, parse_spin_response,
 };
 use crate::client::ui::{
     command_names, completion_lines, display_width, help_lines, input_cursor_column,
     parse_bet_arg, record_history,
 };
+use crate::crash::{multiplier_at, CrashState};
 use crate::roulette::{Bets, NumberBet};
+use std::time::{Duration, Instant};
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Key {
@@ -66,6 +68,9 @@ enum Pending {
     BlackjackStart,
     BlackjackAction,
     BlackjackForfeit,
+    CrashStart,
+    CrashCashout,
+    CrashForfeit,
     Ping,
     Echo,
     Info,
@@ -90,6 +95,8 @@ pub struct ClientCore {
     balance: Option<i64>,
     host: Option<String>,
     fingerprint: Option<String>,
+    /// Local anchor for the crash multiplier, set when a round starts.
+    crash_started: Option<Instant>,
 }
 
 impl ClientCore {
@@ -105,6 +112,7 @@ impl ClientCore {
             balance: None,
             host: None,
             fingerprint: None,
+            crash_started: None,
         }
     }
 
@@ -113,6 +121,7 @@ impl ClientCore {
         if !connected {
             self.logged_in = None;
             self.pending = None;
+            self.crash_started = None;
         }
     }
 
@@ -226,6 +235,49 @@ impl ClientCore {
                     self.board_effects()
                 }
             },
+            Some(Pending::CrashStart) => match parse_crash_response(reply) {
+                Ok(state) => self.apply_crash(state),
+                Err(message) => {
+                    self.game.set_error(message);
+                    self.board_effects()
+                }
+            },
+            Some(Pending::CrashCashout) => match parse_crash_response(reply) {
+                Ok(state) => self.apply_crash(state),
+                Err(message) => {
+                    // A pushed bust can settle the round before this reply
+                    // arrives. The late request must not overwrite the result.
+                    if self.game.crash_status() != "running" {
+                        return self.board_effects();
+                    }
+                    self.game.set_error(message);
+                    self.board_effects()
+                }
+            },
+            Some(Pending::CrashForfeit) => match parse_crash_response(reply) {
+                Ok(state) => {
+                    self.crash_started = None;
+                    self.game.end_game();
+                    let message = format!(
+                        "Game exited. Round forfeited ({} PLN lost).",
+                        state.bet
+                    );
+                    vec![Effect::ClearRegion, Effect::Print(vec![message])]
+                }
+                Err(_) if self.game.crash_status() != "running" => {
+                    // The round ended while the forfeit was in flight.
+                    self.crash_started = None;
+                    self.game.end_game();
+                    vec![
+                        Effect::ClearRegion,
+                        Effect::Print(vec!["Game exited.".to_string()]),
+                    ]
+                }
+                Err(message) => {
+                    self.game.set_error(message);
+                    self.board_effects()
+                }
+            },
             Some(Pending::Ping) => {
                 if reply.trim() == "PONG" {
                     print_line("Pong")
@@ -270,6 +322,9 @@ impl ClientCore {
         if game_type == Some("blackjack") {
             return self.handle_blackjack_key(key);
         }
+        if game_type == Some("crash") {
+            return self.handle_crash_key(key);
+        }
 
         match key {
             Key::CtrlC => vec![Effect::Quit],
@@ -559,6 +614,138 @@ impl ClientCore {
         ))]
     }
 
+    /// Redraw the rising multiplier. Called by the terminal loop on a timer.
+    pub fn tick(&mut self) -> Vec<Effect> {
+        let Some(started) = self.crash_started else {
+            return Vec::new();
+        };
+        self.tick_at(started.elapsed())
+    }
+
+    pub fn tick_at(&mut self, elapsed: Duration) -> Vec<Effect> {
+        if self.crash_started.is_none() {
+            return Vec::new();
+        }
+        if self
+            .game
+            .get_current_state()
+            .map(|state| state.game_type.as_str())
+            != Some("crash")
+        {
+            return Vec::new();
+        }
+        self.game.set_crash_multiplier(multiplier_at(elapsed));
+        self.board_effects()
+    }
+
+    /// True while the server may push a crash event between requests.
+    pub fn expects_push(&self) -> bool {
+        self.crash_started.is_some()
+    }
+
+    pub fn is_async(&self, line: &str) -> bool {
+        line.trim_start().starts_with("CRASH_BUSTED ")
+    }
+
+    /// Handle a server-initiated line. Returns `None` when the line is a normal
+    /// request/response reply and belongs to `handle_reply`.
+    pub fn handle_async_line(&mut self, line: &str) -> Option<Vec<Effect>> {
+        if !self.is_async(line) {
+            return None;
+        }
+        match parse_crash_response(line) {
+            Ok(state) => Some(self.apply_crash(state)),
+            Err(message) => {
+                self.game.set_error(message);
+                Some(self.board_effects())
+            }
+        }
+    }
+
+    fn apply_crash(&mut self, state: CrashState) -> Vec<Effect> {
+        self.balance = Some(state.balance);
+        if state.is_running() {
+            if self.crash_started.is_none() {
+                self.crash_started = Some(Instant::now());
+            }
+        } else {
+            self.crash_started = None;
+        }
+        self.game.apply_crash_state(state);
+        self.board_effects()
+    }
+
+    fn handle_crash_key(&mut self, key: Key) -> Vec<Effect> {
+        let status = self.game.crash_status();
+        let running = status == "running";
+
+        match key {
+            Key::CtrlC => vec![Effect::Quit],
+            Key::Char('q') => {
+                if running {
+                    let Some(session) = self.game.crash_session_id() else {
+                        return Vec::new();
+                    };
+                    self.pending = Some(Pending::CrashForfeit);
+                    vec![Effect::SendLine(format!("CRASH_FORFEIT {session}"))]
+                } else {
+                    self.crash_started = None;
+                    self.game.end_game();
+                    vec![
+                        Effect::ClearRegion,
+                        Effect::Print(vec!["Game exited.".to_string()]),
+                    ]
+                }
+            }
+            Key::Char(' ') if !running && self.pending.is_none() => self.start_crash(),
+            Key::Char('c') if running && self.pending.is_none() => self.cash_out_crash(),
+            Key::Char('+') | Key::Char('=') if !running => {
+                let _ = self.game.adjust_bet(10);
+                self.board_effects()
+            }
+            Key::Char('-') if !running => {
+                let _ = self.game.adjust_bet(-10);
+                self.board_effects()
+            }
+            _ => Vec::new(),
+        }
+    }
+
+    fn start_crash(&mut self) -> Vec<Effect> {
+        let status = self.game.crash_status();
+        if !matches!(status.as_str(), "ready" | "cashed" | "crashed" | "forfeit") {
+            return Vec::new();
+        }
+        let Some(request) = self.game.spin_request() else {
+            return Vec::new();
+        };
+        if let Some(balance) = self.balance {
+            let bet = self
+                .game
+                .get_current_state()
+                .map(|state| state.bet_amount)
+                .unwrap_or(0);
+            if bet as i64 > balance {
+                self.game.set_error("Insufficient balance");
+                return self.board_effects();
+            }
+        }
+
+        self.game.set_crash_status("starting");
+        self.pending = Some(Pending::CrashStart);
+        let mut effects = self.board_effects();
+        effects.push(Effect::SendLine(request));
+        effects
+    }
+
+    fn cash_out_crash(&mut self) -> Vec<Effect> {
+        let Some(session) = self.game.crash_session_id() else {
+            return Vec::new();
+        };
+        self.pending = Some(Pending::CrashCashout);
+        vec![Effect::SendLine(format!("CRASH_CASHOUT {session}"))]
+    }
+
     fn submit(&mut self) -> Vec<Effect> {
         let line = self.input.trim().to_string();
         self.input.clear();
@@ -616,6 +803,7 @@ impl ClientCore {
                 self.connected = false;
                 self.logged_in = None;
                 self.pending = None;
+                self.crash_started = None;
                 self.game.end_game();
                 vec![
                     Effect::ClearRegion,