From ac1c8577955e22726946c82e97a6efc5d8bebee1 Mon Sep 17 00:00:00 2001
From: kske <kai@kske.dev>
Date: Tue, 10 Dec 2019 21:27:06 +0100
Subject: [PATCH] Fixed fullmove counters in PGN export

---
 src/dev/kske/chess/pgn/PGNGame.java | 44 +++++++++++++++--------------
 1 file changed, 23 insertions(+), 21 deletions(-)

diff --git a/src/dev/kske/chess/pgn/PGNGame.java b/src/dev/kske/chess/pgn/PGNGame.java
index 8a86f04..2d91930 100644
--- a/src/dev/kske/chess/pgn/PGNGame.java
+++ b/src/dev/kske/chess/pgn/PGNGame.java
@@ -82,29 +82,31 @@ public class PGNGame {
 		// Insert newline if tags were printed
 		if (!tagPairs.isEmpty()) pw.println();
 
-		// Collect SAN moves
-		Board			clone	= new Board(board, true);
-		List<String>	chunks	= new ArrayList<>();
-		while (clone.getLog().hasParent()) {
-			Move move = clone.getLog().getLast().move;
-			clone.revert();
-			String chunk = clone.getLog().getLast().activeColor == Color.WHITE ? String.format(" %d. ", clone.getLog().getLast().fullmoveCounter)
-					: " ";
-			chunk += move.toSAN(clone);
-			chunks.add(chunk);
-		}
-		Collections.reverse(chunks);
-
-		// Write movetext
-		String line = "";
-		for (String chunk : chunks)
-			if (line.length() + chunk.length() <= 80) line += chunk;
-			else {
-				// Flush line
-				pw.println(line);
-				line = "";
+		if (!board.getLog().isEmpty()) {
+			// Collect SAN moves
+			Board			clone	= new Board(board, true);
+			List<String>	chunks	= new ArrayList<>();
+			boolean			flag	= true;
+			while (flag) {
+				Move move = clone.getLog().getLast().move;
+				flag = clone.getLog().hasParent();
+				clone.revert();
+				String chunk = clone.getLog().getActiveColor() == Color.WHITE ? String.format(" %d. ", clone.getLog().getFullmoveNumber()) : " ";
+				chunk += move.toSAN(clone);
+				chunks.add(chunk);
 			}
+			Collections.reverse(chunks);
 
+			// Write movetext
+			String line = "";
+			for (String chunk : chunks)
+				if (line.length() + chunk.length() <= 80) line += chunk;
+				else {
+					pw.println(line);
+					line = "";
+				}
+			if (!line.isEmpty()) pw.println(line);
+		}
 		// Write game termination marker
 		pw.print(tagPairs.get("Result"));
 	}