HighScoreManager

src/main/java/se/urmo/game/state/GameStateManager.java

@@ -18,7 +18,7 @@ public class GameStateManager {
         GameOverState gameOverState = new GameOverState(this, new HighScoreManager());
         states.put(GameStateType.PLAYING, new PlayingState(game, this, gameOverState));
         states.put(GameStateType.GAME_OVER, gameOverState);
-        setState(GameStateType.GAME_OVER);
+        setState(GameStateType.PLAYING);
     }
 
     public void setState(GameStateType type) {

src/main/java/se/urmo/game/state/HighScoreManager.java

@@ -1,7 +1,42 @@
 package se.urmo.game.state;
 
-public class HighScoreManager {
-    public void submit(int finalScore) {
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
 
+public class HighScoreManager {
+    private final Path file = Path.of("highscores.dat");
+    private final int maxEntries = 10;
+    private final List<Integer> scores = new ArrayList<>();
+
+    public HighScoreManager() { load(); }
+
+    public void submit(int score) {
+        scores.add(score);
+        scores.sort(Comparator.reverseOrder());
+        if (scores.size() > maxEntries) scores.remove(scores.size() - 1);
+        save();
+    }
+
+    public List<Integer> top() { return List.copyOf(scores); }
+
+    private void load() {
+        try {
+            if (!Files.exists(file)) return;
+            for (String line : Files.readAllLines(file)) {
+                scores.add(Integer.parseInt(line.trim()));
+            }
+            scores.sort(Comparator.reverseOrder());
+        } catch (Exception ignored) {}
+    }
+
+    private void save() {
+        try {
+            var lines = scores.stream().map(String::valueOf).toList();
+            Files.write(file, lines, StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
+        } catch (Exception ignored) {}
     }
 }