add allowedMove

src/main/java/de/hsfulda/onses/services/GameService.java

@@ -22,7 +22,16 @@ public class GameService {
      // add lastPlayedCard back to drawCardDeck
          game.setLastPlayedCard(card);
      // check for special rules (draw, colorchoose, skip,...)
+    }
+
+    public boolean allowedMove(Player player, Card card)
+    {
+        boolean isAllowed = false;
+        Card lastCard = game.getLastPlayedCard();
+        // rules:
+        if (card.getColor() == lastCard.getColor()) isAllowed = true; // same color
 
+        return isAllowed;
     }
 
 }