Rename board to mainBoard

Author: adamgraham

Assets/Scenes/Tetris.unity

@@ -603,7 +603,7 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   tile: {fileID: 11400000, guid: a10927dec698b7c49b1375f89e8db4d2, type: 2}
-  board: {fileID: 1887623656}
+  mainBoard: {fileID: 1887623656}
   trackingPiece: {fileID: 1887623655}
 --- !u!1 &1887623652
 GameObject:

Assets/Scripts/Ghost.cs

@@ -4,7 +4,7 @@
 public class Ghost : MonoBehaviour
 {
     public Tile tile;
-    public Board board;
+    public Board mainBoard;
     public Piece trackingPiece;
 
     public Tilemap tilemap { get; private set; }
@@ -46,22 +46,22 @@ private void Drop()
         Vector3Int position = this.trackingPiece.position;
 
         int current = position.y;
-        int bottom = -this.board.boardSize.y / 2 - 1;
+        int bottom = -this.mainBoard.boardSize.y / 2 - 1;
 
-        this.board.Clear(this.trackingPiece);
+        this.mainBoard.Clear(this.trackingPiece);
 
         for (int row = current; row >= bottom; row--)
         {
             position.y = row;
 
-            if (this.board.IsValidPosition(this.trackingPiece, position)) {
+            if (this.mainBoard.IsValidPosition(this.trackingPiece, position)) {
                 this.position = position;
             } else {
                 break;
             }
         }
 
-        this.board.Set(this.trackingPiece);
+        this.mainBoard.Set(this.trackingPiece);
     }
 
     private void Set()