feat: improve bitboard print

1 files changed, 9 insertions, 5 deletions

diff --git a/src/bitboard.rs b/src/bitboard.rs
index f43d28e..199e6c7 100644
--- a/src/bitboard.rs
+++ b/src/bitboard.rs
@@ -6,13 +6,17 @@ pub type Bitboard = u64;
 #[allow(dead_code)]
 pub fn print(bb: Bitboard) {
     println!();
-    for index in 0..64 {
-        print!("{}", if bb >> index & 1 == 1 { "1" } else { "." });
-        if (index + 1) % 8 == 0 {
-            println!();
+    for rank in (0..8).rev() {
+        print!("{}|", rank + 1);
+        for file in 0..8 {
+            let index = rank * 8 + file;
+            print!("{}", if bb >> index & 1 == 1 { "1" } else { "." });
+            if file == 7 {
+                println!();
+            }
         }
     }
-    return println!();
+    return println!("  ABCDEFGH");
 }
 
 /// Return bitboard cardinality, aka number of elements in the set