From fc1d4fbb98323b34829da9393f366fb07d2f1605 Mon Sep 17 00:00:00 2001
From: Federico Igne <git@federicoigne.com>
Date: Mon, 4 Jan 2021 13:59:27 +0000
Subject: [rust] Queen Attack

---
 rust/queen-attack/src/lib.rs | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 rust/queen-attack/src/lib.rs

(limited to 'rust/queen-attack/src')

diff --git a/rust/queen-attack/src/lib.rs b/rust/queen-attack/src/lib.rs
new file mode 100644
index 0000000..cbdc2c7
--- /dev/null
+++ b/rust/queen-attack/src/lib.rs
@@ -0,0 +1,36 @@
+#[derive(Debug)]
+pub struct ChessPosition {
+    rank: i32,
+    file: i32,
+}
+
+#[derive(Debug)]
+pub struct Queen {
+    pos: ChessPosition,
+}
+
+fn in_range<T: Ord>(n: T, min: T, max: T) -> bool {
+    min <= n && n < max
+}
+
+impl ChessPosition {
+    pub fn new(rank: i32, file: i32) -> Option<Self> {
+        if in_range(rank, 0, 8) && in_range(file, 0, 8) {
+            Some(ChessPosition { rank, file })
+        } else {
+            None
+        }
+    }
+}
+
+impl Queen {
+    pub fn new(pos: ChessPosition) -> Self {
+        Queen { pos }
+    }
+
+    pub fn can_attack(&self, other: &Queen) -> bool {
+        self.pos.file == other.pos.file
+            || self.pos.rank == other.pos.rank
+            || (self.pos.rank - other.pos.rank).abs() == (self.pos.file - other.pos.file).abs()
+    }
+}
-- 
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