refactor

Author: Elic0de

src/main/java/com/github/elic0de/hungergames/game/HungerGame.java

@@ -301,10 +301,16 @@ public Set<GameUser> getTeamUsers(GameUser user) {
         return team.getEntries().stream().map(Bukkit::getPlayer).filter(Objects::nonNull).map(GameUserManager::getGameUser).collect(Collectors.toSet());
     }
 
-    public long getAlivePlayersSize() {
-        return GameUserManager.getOnlineUsers().stream()
-                .filter(user -> !deadPlayers.contains(user.getUsername()))
-                .count();
+    public int getAlivePlayersSize() {
+        final AtomicInteger playersSize = new AtomicInteger();
+        aliveTeams.forEach(team -> {
+            for (String playerName : team.getEntries()) {
+                if (deadPlayers.contains(playerName)) continue;
+                playersSize.incrementAndGet();
+            }
+        });
+
+        return playersSize.get();
     }
 
     @Override