played against now stores playerIDs instead of pointers to enable saving

src/kode/player.cpp

@@ -141,7 +141,7 @@ bool Player::hasPlayedAgainst(int id)
     for (int i = 0; i < playedAgainst.size(); i++)
     {
 
-        if (playedAgainst[i]->playerID == id)
+        if (playedAgainst[i] == id)
         {
             return true;
         }