Build out system to get formatted display.

engine/src/lib.rs

@@ -59,6 +59,11 @@ impl Board {
             tiles: playing_tiles,
         }
     }
+
+    fn get_index(&self, row: u32, column: u32) -> usize {
+        let width = self.dimensions.get_size();
+        (row * width + column) as usize
+    }
 }
 
 static COLUMN_COORDINATE_BORDER: &str = " ABCDEFGHIJKL";
@@ -75,16 +80,33 @@ impl fmt::Display for Board {
         }
         write!(formatter, "\n")?;
 
+        for row in 0..width {
 
+            write!(formatter, "{ }", (row + 1).to_string())?;
+            if row % 2 == 0 {
+                write!(formatter, " ")?;
+            }
 
-//        for {}
-//
-//        let square = match tile {
-//            Piece::LightPawn => "♙",
-//            Piece::LightKing => "♔",
-//            Piece::DarkPawn => "♟",
-//            Piece::DarkKing => "♚",
-//        };
+            for col in 0..(width / 2) {
+                let token = match self.tiles[self.get_index(row, col)] {
+                    BoardTile::Piece(Piece::LightPawn) => "○",
+                    BoardTile::Piece(Piece::LightKing) => "⍟",
+                    BoardTile::Piece(Piece::DarkPawn) => "●",
+                    BoardTile::Piece(Piece::DarkKing) => "✪",
+                    BoardTile::Empty => "✪",
+                };
+
+                let adjacent = if row % 2 == 1 && col == width - 1 {
+                    ""
+                } else {
+                    " "
+                };
+
+                write!(formatter, "{}{}", token, adjacent)?;
+            }
+
+            write!(formatter, "\n")?;
+        }
 
         Ok(())
     }
@@ -99,8 +121,20 @@ mod tests {
     #[test]
     fn setup_international_board() {
 
-        let expected = r#" ABCDEFGHIJ
-"#;
+        let expected =
+            "\
+             ABCDEFGHIJ\n\
+            1 ○ ○ ○ ○ ○\n\
+            2○ ○ ○ ○ ○ \n\
+            3 ○ ○ ○ ○ ○\n\
+            4○ ○ ○ ○ ○ \n\
+            5 ◰ ◰ ◰ ◰ ◰\n\
+            6◰ ◰ ◰ ◰ ◰ \n\
+            7 ● ● ● ● ●\n\
+            8● ● ● ● ● \n\
+            9 ● ● ● ● ●\n\
+            10● ● ● ● ● \n\
+            ";
         assert_eq!(Board::new(BoardSize::International).to_string(), expected);
     }
 }