From 63a2e051997f38fe615e4f2eb0775f9e6cdfb994 Mon Sep 17 00:00:00 2001
From: David Gay <eapoems@riseup.net>
Date: Sat, 30 Sep 2023 22:12:52 -0400
Subject: DieRoll struct

---
 src/dice.rs | 26 ++++++++++++++++++++------
 src/main.rs |  5 +++--
 2 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/src/dice.rs b/src/dice.rs
index 06771ee..1293a6f 100644
--- a/src/dice.rs
+++ b/src/dice.rs
@@ -2,8 +2,22 @@ use std::fmt;
 use std::fmt::Formatter;
 use rand::Rng;
 
+pub struct DieRoll {
+    sides: u32,
+    face: u32,
+}
+
+impl DieRoll {
+    fn new(sides: u32, face: u32) -> Self {
+        DieRoll {
+            sides,
+            face,
+        }
+    }
+}
+
 pub struct RollResult {
-    rolls: Vec<u32>,
+    rolls: Vec<DieRoll>,
 }
 
 impl RollResult {
@@ -13,12 +27,12 @@ impl RollResult {
         }
     }
 
-    fn add_roll(&mut self, roll: u32) {
-        self.rolls.push(roll);
+    fn add_roll(&mut self, roll: DieRoll) {
+        self.rolls.push(roll)
     }
 
     fn total(&self) -> u32 {
-        self.rolls.iter().sum()
+        self.rolls.iter().map(|die_roll| die_roll.face).sum()
     }
 }
 
@@ -60,8 +74,8 @@ pub fn roll_formula(formula: &str) -> Option<RollResult> {
     let mut roll_result = RollResult::new();
 
     for _ in 0..num_dice {
-        let roll = roll_die(sides);
-        roll_result.add_roll(roll);
+        let face = roll_die(sides);
+        roll_result.add_roll(DieRoll::new(sides, face));
     }
 
     Some(roll_result)
diff --git a/src/main.rs b/src/main.rs
index 28558eb..88fa2ab 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,8 +1,9 @@
 mod dice;
 
 fn main() {
-    println!("Rolling d20:");
-    match dice::roll_formula("d20") {
+    const TEST_FORMULA : &str = "3d6";
+    println!("Rolling {}:", TEST_FORMULA);
+    match dice::roll_formula(TEST_FORMULA) {
         Some(result) => println!("{}", result),
         None => eprintln!("Error: Invalid roll formula, or die roll otherwise failed.")
     }
-- 
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