WIP implementing betting logic

src/game.rs

@@ -1,4 +1,4 @@
-use std::collections::HashMap;
+use std::collections::{HashMap, VecDeque};
 
 use crate::card::{create_deck, draw_card, PlayingCard};
 use crate::player::{self, Player};
@@ -17,20 +17,44 @@ struct BettingPot {
     /// **Value**: Pennies
     bets: HashMap<u32, u32>,
     pot_total: u32,
+    /// If there are multiple pots, represents the max value of this pot.
+    /// Calls or raises above this go into the next pot.
+    pot_cap: Option<u32>,
 }
 
 impl BettingPot {
-    pub fn new(players: Vec<u32>) -> BettingPot {
+    pub fn new(players: Vec<u32>, starting_bets: Option<HashMap<u32, u32>>) -> BettingPot {
-        let mut m: HashMap<u32, u32> = HashMap::new();
+        let mut m: HashMap<u32, u32> = starting_bets.unwrap_or_default();
         for p in players {
-            m.insert(p, 0);
+            if !m.contains_key(&p) {
+                m.insert(p, 0);
+            }
         }
         BettingPot {
             bets: m,
             pot_total: 0,
+            pot_cap: None,
         }
     }
 
+    pub fn cap_pot(&mut self, pennies: u32) -> HashMap<u32, u32> {
+        self.pot_cap = Some(pennies);
+        let mut new_map: HashMap<u32, u32> = HashMap::new();
+        self.bets.iter_mut().for_each(|bet| {
+            if *bet.1 > pennies {
+                let difference = *bet.1 - pennies;
+                self.pot_total -= difference;
+                *bet.1 = pennies;
+                new_map.insert(*bet.0, difference);
+            }
+        });
+        new_map
+    }
+
+    pub fn declare_winner(&self, id: u32, game: &mut PokerGame) {
+        game.get_player_mut(id).pay(self.pot_total);
+    }
+
     pub fn remove_player(&mut self, id: u32) {
         self.bets.remove(&id);
     }
@@ -80,7 +104,7 @@ impl PokerGame {
         PokerGame {
             players,
             table: vec![],
-            pots: vec![BettingPot::new(p_ids)],
+            pots: vec![BettingPot::new(p_ids, None)],
             big_blind: 0,
             stage: GameStage::PreFlop,
             deck: create_deck(),
@@ -107,7 +131,16 @@ impl PokerGame {
 
     pub fn get_bets(&mut self) {
         let ids: Vec<u32> = self.players.iter().map(|p| p.id()).collect();
-        for id in ids {
+
+        // Queue of players that still need to bet. When this is empty,
+        // all players have placed there bets and the next round is ready to start.
+        let mut bet_queue: VecDeque<u32> = VecDeque::new();
+        self.players
+            .iter()
+            .for_each(|p| bet_queue.push_back(p.id()));
+
+        while !bet_queue.is_empty() {
+            let id = bet_queue.pop_front().unwrap();
             let action = self.get_player(id).get_move(self);
             let mut current_bet = 0;
             match action {
@@ -119,12 +152,66 @@ impl PokerGame {
                 }
                 player::TurnAction::Call => {
                     if current_bet > 0 {
-                        let message = format!("You called ${}", (current_bet as f64) / 100.0);
+                        let message = format!("You called ${}.", (current_bet as f64) / 100.0);
                         self.get_player_mut(id).deduct(current_bet, Some(&message));
                     }
+                    let mut bet = current_bet.clone();
+                    self.pots.iter_mut().for_each(|pot| match pot.pot_cap {
+                        Some(cap) => {
+                            if cap > bet {
+                                panic!("There's something wrong with the logic, bet is less than the cap??");
+                            }
+                            pot.add_bet(id, cap);
+                            bet -= cap;
+                        },
+                        None => {
+                            if bet > 0 {
+                                pot.add_bet(id, bet);
+                            }
+                        }
+                    });
                     self.pots.last_mut().unwrap().add_bet(id, current_bet);
                 }
-                player::TurnAction::Raise(_) => todo!(),
+                player::TurnAction::AllIn(amount) => {
+                    // Remove money from player and add it to the pot
+                    let message = format!(
+                        "You went all in with your last ${}.",
+                        (current_bet as f64) / 100.0
+                    );
+                    self.get_player_mut(id).deduct(amount, Some(&message));
+                    self.pots.last_mut().unwrap().add_bet(id, amount);
+
+                    // Take the difference between the current bet and create a new pot
+                    let pot_cap = *self.pots.last().unwrap().bets.get(&id).unwrap();
+                    let new_betmap = self.pots.last_mut().unwrap().cap_pot(pot_cap);
+                    let new_pot_players: Vec<u32> = self
+                        .players
+                        .iter()
+                        .filter(|p| p.id() != id)
+                        .map(|p| p.id())
+                        .collect();
+                    let new_pot = BettingPot::new(new_pot_players, Some(new_betmap));
+                    self.pots.push(new_pot);
+                }
+                player::TurnAction::Raise(raise) => {
+                    // New current bet
+                    current_bet = current_bet + raise;
+                    let message = format!("You raised ${}.", (current_bet as f64) / 100.0);
+
+                    // Remove money from player
+                    self.get_player_mut(id).deduct(current_bet, Some(&message));
+
+                    // Add money to current pot
+                    self.pots.last_mut().unwrap().add_bet(id, current_bet);
+
+                    // Reset queue of players waiting to bet.
+                    // Everyone now has to decide whether to match the raise.
+                    self.players.iter().for_each(|p| {
+                        if !bet_queue.contains(&p.id()) && p.id() != id {
+                            bet_queue.push_back(p.id())
+                        }
+                    });
+                }
             }
         }
     }

src/player.rs

@@ -6,6 +6,7 @@ use std::io;
 pub enum TurnAction {
     Fold,
     Call,
+    AllIn(u32),
     Raise(u32),
 }