Fix multiplayer conceding

forge-game/src/main/java/forge/game/phase/PhaseHandler.java

@@ -127,6 +127,10 @@ public class PhaseHandler implements java.io.Serializable {
         game.updatePlayerTurnForView();
         setPriority(playerTurn);
     }
+    
+    public final void endPlayerLostTurn() {
+        setPlayerTurn(handleNextTurn());
+    }
 
     public final Player getPriorityPlayer() {
         return pPlayerPriority;

forge-gui/src/main/java/forge/match/AbstractGuiGame.java

@@ -32,6 +32,7 @@ import forge.interfaces.IGameController;
 import forge.interfaces.IGuiGame;
 import forge.interfaces.IMayViewCards;
 import forge.model.FModel;
+import forge.player.PlayerControllerHuman;
 import forge.properties.ForgeConstants;
 import forge.properties.ForgePreferences;
 import forge.trackable.TrackableTypes;
@@ -43,7 +44,8 @@ public abstract class AbstractGuiGame implements IGuiGame, IMayViewCards {
     private final Map<PlayerView, IGameController> gameControllers = Maps.newHashMap();
     private final Map<PlayerView, IGameController> originalGameControllers = Maps.newHashMap();
     private boolean gamePause = false;
-
+    private boolean ignoreConcedeChain = false;
+    
     public final boolean hasLocalPlayers() {
         return !gameControllers.isEmpty();
     }
@@ -294,23 +296,48 @@ public abstract class AbstractGuiGame implements IGuiGame, IMayViewCards {
             return true;
         }
         if (hasLocalPlayers()) {
-            if (showConfirmDialog(Localizer.getInstance().getMessage("lblConcedeCurrentGame"), Localizer.getInstance().getMessage("lblConcedeTitle"), Localizer.getInstance().getMessage("lblConcede"), Localizer.getInstance().getMessage("lblCancel"))) {
-                for (final IGameController c : getOriginalGameControllers()) {
-                    // Concede each player on this Gui (except mind-controlled players)
-                    c.concede();
+            boolean concedeNeeded = false;
+            // check if anyone still needs to confirm
+            for (final IGameController c : getOriginalGameControllers()) {
+                if (c instanceof PlayerControllerHuman) {
+                    if (((PlayerControllerHuman) c).getPlayer().getOutcome() == null) {
+                        concedeNeeded = true;
+                    }
                 }
-            } else {
-                return false;
+            }
+            if (concedeNeeded) {
+                if (showConfirmDialog(Localizer.getInstance().getMessage("lblConcedeCurrentGame"), Localizer.getInstance().getMessage("lblConcedeTitle"), Localizer.getInstance().getMessage("lblConcede"), Localizer.getInstance().getMessage("lblCancel"))) {
+                    for (final IGameController c : getOriginalGameControllers()) {
+                        // Concede each player on this Gui (except mind-controlled players)
+                        c.concede();
+                    }
+                }
+                else {
+                    return false;
+                }
+            }
+            else {
+                if (ignoreConcedeChain) {
+                    return false;
+                }
+                else {
+                    return true;
+                }
+
             }
             if (gameView.isGameOver()) {
                 // Don't immediately close, wait for win/lose screen
                 return false;
-            } else {
-                for (PlayerView player : getLocalPlayers()){
-                    if (!player.isAI()){
+            }
+            else {
+                // since the nextGameDecision might come from somewhere else it will try and concede too
+                ignoreConcedeChain = true;
+                for (PlayerView player : getLocalPlayers()) {
+                    if (!player.isAI()) {
                         getGameController(player).nextGameDecision(NextGameDecision.QUIT);
                     }
                 }
+                ignoreConcedeChain = false;
                 return false;
             }
         }

forge-gui/src/main/java/forge/player/PlayerControllerHuman.java

@@ -2943,7 +2943,13 @@ public class PlayerControllerHuman extends PlayerController implements IGameCont
     }
 
     public void autoPassUntilEndOfTurn() {
-        getGui().autoPassUntilEndOfTurn(getLocalPlayerView());
+        // if we already conceded just skip everything
+        if (player.getOutcome() != null) {
+            player.getGame().getPhaseHandler().endPlayerLostTurn();
+        }
+        else {
+            getGui().autoPassUntilEndOfTurn(getLocalPlayerView());
+        }
     }
 
     @Override