From 63c2e2fc3ea299aee31b66d2bdd6ecd871df223a Mon Sep 17 00:00:00 2001
From: salmonik <salmonik@tuta.io>
Date: Wed, 28 Oct 2026 22:44:41 +0100
Subject: v0.3.0: add server core, bcrypt migration and plays audit

---
 src/server/games/slots.rs | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

(limited to 'src/server/games/slots.rs')

diff --git a/src/server/games/slots.rs b/src/server/games/slots.rs
index 0a9797d..02595b1 100644
--- a/src/server/games/slots.rs
+++ b/src/server/games/slots.rs
@@ -5,6 +5,8 @@ use std::collections::HashMap;
 pub struct SlotsGame {
     symbols: Vec<char>,
     payouts: HashMap<String, u64>,
+    /// Deterministic reels for tests and demos.
+    fixed_reels: Option<Vec<char>>,
 }
 
 impl SlotsGame {
@@ -27,10 +29,25 @@ impl SlotsGame {
         payouts.insert("DD".to_string(), 2);
         payouts.insert("SS".to_string(), 3);
 
-        Self { symbols, payouts }
+        Self {
+            symbols,
+            payouts,
+            fixed_reels: None,
+        }
+    }
+
+    /// Build a slots game that always spins the given three symbols.
+    pub fn with_reels(reels: &str) -> Self {
+        let mut game = Self::new();
+        game.fixed_reels = Some(reels.chars().take(3).collect());
+        game
     }
 
     fn spin_reels(&self) -> Vec<char> {
+        if let Some(reels) = &self.fixed_reels {
+            return reels.clone();
+        }
+
         let mut rng = rand::thread_rng();
         (0..3)
             .map(|_| self.symbols[rng.gen_range(0..self.symbols.len())])
@@ -41,7 +58,7 @@ impl SlotsGame {
         let reel_string: String = reels.iter().collect();
 
         if let Some(&multiplier) = self.payouts.get(&reel_string) {
-            return bet * multiplier;
+            return bet.saturating_mul(multiplier);
         }
 
         // Check all three pairs including non-adjacent (e.g. [C,D,C])
@@ -51,7 +68,7 @@ impl SlotsGame {
             if reels[a] == reels[b] {
                 let two_of_kind = format!("{}{}", reels[a], reels[a]);
                 if let Some(&multiplier) = self.payouts.get(&two_of_kind) {
-                    best = best.max(bet * multiplier);
+                    best = best.max(bet.saturating_mul(multiplier));
                 }
             }
         }
-- 
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