Fixed: Temporary fix Concurrent access disconnected player game (nextPlayerSetup)

src/main/java/it/polimi/ingsw/gc14/Model/Game.java

@@ -83,7 +83,7 @@ public class Game implements Serializable {
      * @param totem  the selected totem.
      * @return {@code true} if the choice is applied successfully, {@code false} otherwise.
      */
-    public boolean TotemChoice(Player player,Totems totem) {
+    public synchronized boolean TotemChoice(Player player,Totems totem) {
         if(!currentState.getGameStage().equals(GameStages.TOTEM_CHOICE))
             return false;
         if(!getCurrentState().getCurrentPlayer().equals(player))
@@ -135,7 +135,7 @@ public class Game implements Serializable {
      * @return {@code true} if the disconnection is handled successfully,
      *         {@code false} if the player was already marked as disconnected.
      */
-    public boolean DisconnectedPlayer(Player player)
+    public synchronized boolean DisconnectedPlayer(Player player)
     {
         if(disconnetedPlayers.containsKey(player) && disconnetedPlayers.get(player))
         {
@@ -177,7 +177,7 @@ public class Game implements Serializable {
      * @return {@code true} if the reconnection is handled successfully,
      *         {@code false} if the player was not previously marked as disconnected.
      */
-    public boolean ReconnectPlayer(Player player)
+    public synchronized boolean ReconnectPlayer(Player player)
     {
         if(!disconnetedPlayers.containsKey(player))
         {
@@ -198,7 +198,7 @@ public class Game implements Serializable {
     /**
      * Clears the collection of disconnected players.
      */
-    public void ClearDisconnected()
+    public synchronized void ClearDisconnected()
     {
         disconnetedPlayers.clear();
     }
@@ -689,7 +689,7 @@ public class Game implements Serializable {
      * If the current stage is {@code OPTIONAL_CARD_EFFECT}, the next player is taken from the optional card queue.
      * If no player is available, the game stage is updated to {@code RESOLVING_EVENT}.
      */
-    private void nextPlayerSetup() {
+    private synchronized void nextPlayerSetup() {
 
         if (GameStages.SLOT_CHOICE == currentState.getGameStage()) {
             Player tempPlayer = orderLogicCard.pull();
@@ -796,7 +796,7 @@ public class Game implements Serializable {
         }
     }
     //TODO
-    private void transitionToOptionalOrNextRound() {
+    private synchronized void transitionToOptionalOrNextRound() {
         currentState.GameStageUpdate(GameStages.OPT_CARD_E);
 
         OptionalCardQueue = new LinkedList<>();
@@ -986,7 +986,7 @@ public class Game implements Serializable {
      * in the first position of the final ranking. The remaining players are
      * ordered by prestige value and, in case of a tie, by food value.
      */
-    public void EndGameForFeit() {
+    public synchronized void EndGameForFeit() {
         Player winner=playersList.stream().filter(x->!disconnetedPlayers.containsKey(x)||!disconnetedPlayers.get(x)).toList().get(0);
         currentState.GameStageUpdate(GameStages.ENDED);
         playerStanding=new ArrayList<>(playersList);