From c648be20aa2e6a7142c7dd67abf80d5dd1384f09 Mon Sep 17 00:00:00 2001
From: Simon Gardling <titaniumtown@proton.me>
Date: Mon, 3 Mar 2025 11:35:36 -0500
Subject: [PATCH] Board: add `random`

---
 src/repr/board.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/repr/board.rs b/src/repr/board.rs
index 27af858..58a96a3 100644
--- a/src/repr/board.rs
+++ b/src/repr/board.rs
@@ -5,6 +5,7 @@ use super::{
     CoordAxis, CoordPair,
 };
 use const_fn::const_fn;
+use rand::{seq::IteratorRandom, Rng};
 use std::{cmp::Ordering, fmt, sync::LazyLock};
 
 #[derive(PartialEq, Eq, Copy, Clone, Debug)]
@@ -97,6 +98,21 @@ impl Board {
         }
     }
 
+    pub fn random(steps: usize) -> Self {
+        let mut new = Self::new().starting_pos();
+        let mut p = Piece::Black;
+        let mut rng = rand::rng();
+        for _ in 0..steps {
+            if let Some(m) = new.possible_moves(p).choose(&mut rng) {
+                new.place_unchecked(m, p);
+            }
+
+            p = !p;
+        }
+
+        new
+    }
+
     /// Starting position
     pub fn starting_pos(mut self) -> Self {
         self.place_unchecked(