From 07437890c9d4b97d2a43812de2d7d961c207a41d Mon Sep 17 00:00:00 2001
From: Mohammed Amar-Bensaber <renken@shione.net>
Date: Sat, 7 Dec 2024 18:02:13 +0100
Subject: [PATCH] feat(grid): implement cell random generation

Prefer filled over empty cells when generating them randomly because it
makes the game more fun.
---
 src/grid.rs      |  2 ++
 src/grid/rand.rs | 14 ++++++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 src/grid/rand.rs

diff --git a/src/grid.rs b/src/grid.rs
index 03e6c92..4954960 100644
--- a/src/grid.rs
+++ b/src/grid.rs
@@ -1,3 +1,5 @@
+mod rand;
+
 #[derive(Clone, Default, Debug, PartialEq)]
 pub enum Cell {
     /// Filled.
diff --git a/src/grid/rand.rs b/src/grid/rand.rs
new file mode 100644
index 0000000..23bd419
--- /dev/null
+++ b/src/grid/rand.rs
@@ -0,0 +1,14 @@
+use crate::grid::Cell;
+use rand::distributions::{Distribution, Standard};
+use rand::Rng;
+
+impl Distribution<Cell> for Standard {
+    fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Cell {
+        let filled = rng.gen_bool(2. / 3.);
+        if filled {
+            Cell::Filled
+        } else {
+            Cell::Empty
+        }
+    }
+}