seed_from_u64 (#7)

Closes #5

Reviewed-on: #7
Co-authored-by: Rhys Lloyd <krakow20@gmail.com>
Co-committed-by: Rhys Lloyd <krakow20@gmail.com>

klondike/Cargo.toml

@@ -5,4 +5,4 @@ edition = "2024"
 
 [dependencies]
 card_game = { version = "0.1.0", path = "../card_game" }
-rand = { version = "0.10.1", default-features = false, features = ["thread_rng"] }
+rand = { version = "0.10.1", default-features = false, features = ["std_rng"] }

klondike/src/lib.rs

@@ -1,4 +1,4 @@
-pub type Rng = rand::rngs::ThreadRng;
+pub type Rng = rand::rngs::StdRng;
 
 use card_game::{Card, Game, Pile, Rank, Stack};
 
@@ -532,14 +532,16 @@ pub struct Klondike {
 	state: KlondikeState,
 }
 impl Klondike {
-	pub fn new_random() -> Self {
-		Self::new(Rng::default())
+	pub fn with_seed(seed: u64) -> Self {
+		use rand::SeedableRng;
+		let rng = Rng::seed_from_u64(seed);
+		Self::with_rng(rng)
 	}
-	pub fn new(mut seed: Rng) -> Self {
+	pub fn with_rng(mut rng: Rng) -> Self {
 		// shuffle a new deck
 		let mut deck = Stack::full_deck(card_game::Deck::Deck1);
 		use rand::seq::SliceRandom;
-		deck.shuffle(&mut seed);
+		deck.shuffle(&mut rng);
 		let mut deck = deck.into_iter();
 
 		// generate tableaus

klondike/src/test.rs

@@ -3,13 +3,13 @@ use card_game::Session;
 #[test]
 fn test_is_winnable() {
 	// is winnable
-	let is_winnable = Session::new_default(Klondike::new_random()).is_winnable();
+	let is_winnable = Session::new_default(Klondike::with_seed(123)).is_winnable();
 	println!("is_winnable = {is_winnable:?}");
 }
 #[test]
 fn test_klondike() {
 	// create game session
-	let game = Klondike::new_random();
+	let game = Klondike::with_seed(123);
 	let mut session = Session::new_default(game);
 
 	// is winnable