v1.3.0: simplify payouts to bet x symbol x shape

1 files changed, 19 insertions, 13 deletions

diff --git a/src/server/games/slots.rs b/src/server/games/slots.rs
index e9f58b1..298cd4c 100644
--- a/src/server/games/slots.rs
+++ b/src/server/games/slots.rs
@@ -1,5 +1,5 @@
 use super::traits::{Game, GameError, GamePhase, GameResult, GameState};
-use crate::slots::PAYTABLE;
+use crate::slots::{SHAPE_MULTIPLIERS, SYMBOL_MULTIPLIERS};
 use rand::Rng;
 use std::collections::HashMap;
 
@@ -27,10 +27,18 @@ pub struct SlotsGame {
 
 impl SlotsGame {
     pub fn new() -> Self {
-        let payouts = PAYTABLE
+        // payout = bet * symbol multiplier * shape multiplier
+        let payouts = SYMBOL_MULTIPLIERS
             .iter()
-            .map(|&(symbol, three, four, five)| {
-                (symbol, Payout { three, four, five })
+            .map(|&(symbol, symbol_multiplier)| {
+                (
+                    symbol,
+                    Payout {
+                        three: symbol_multiplier * SHAPE_MULTIPLIERS[0].1,
+                        four: symbol_multiplier * SHAPE_MULTIPLIERS[1].1,
+                        five: symbol_multiplier * SHAPE_MULTIPLIERS[2].1,
+                    },
+                )
             })
             .collect();
 
@@ -116,17 +124,15 @@ impl SlotsGame {
         let p4 = 5.0 / 7776.0;
         let p5 = 1.0 / 7776.0;
 
-        let per_line: f64 = self
-            .payouts
-            .values()
-            .map(|payout| {
-                p3 * payout.three as f64
-                    + p4 * payout.four as f64
-                    + p5 * payout.five as f64
-            })
+        let symbol_sum: f64 = SYMBOL_MULTIPLIERS
+            .iter()
+            .map(|(_, multiplier)| *multiplier as f64)
             .sum();
+        let shape_ev = p3 * SHAPE_MULTIPLIERS[0].1 as f64
+            + p4 * SHAPE_MULTIPLIERS[1].1 as f64
+            + p5 * SHAPE_MULTIPLIERS[2].1 as f64;
 
-        per_line * PAYLINES.len() as f64
+        symbol_sum * shape_ev * PAYLINES.len() as f64
     }
 }