From 1f78d4811acff510db02a662203b52b686c3d7a8 Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Sun, 28 Jan 2024 15:52:41 -0800
Subject: [PATCH] [core] Declare Rank::PAWN_STARTING_RANKS

This is a slice that declares the pawn starting ranks for each color.
---
 core/src/coordinates.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/core/src/coordinates.rs b/core/src/coordinates.rs
index 7e4be53..f40ccb1 100644
--- a/core/src/coordinates.rs
+++ b/core/src/coordinates.rs
@@ -159,6 +159,15 @@ impl Rank {
         Rank::SEVEN,
         Rank::EIGHT,
     ];
+
+    /// Ranks on which pawns start, by color.
+    ///
+    /// ```
+    /// use chessfriend_core::{Color, Rank};
+    /// assert_eq!(Rank::PAWN_STARTING_RANKS[Color::White as usize], Rank::TWO);
+    /// assert_eq!(Rank::PAWN_STARTING_RANKS[Color::Black as usize], Rank::SEVEN);
+    /// ```
+    pub const PAWN_STARTING_RANKS: [Rank; 2] = [Rank::TWO, Rank::SEVEN];
 }
 
 #[rustfmt::skip]