How to use

getAllPlayers

method

in

com.jtbdevelopment.games.state.AbstractGame

private Map<ID, Player<ID>> createIDMap(final U game) {
 return game.getAllPlayers().stream().collect(Collectors.toMap(Player::getId, p -> p));
}

@SuppressWarnings("WeakerAccess")
protected void validatePlayerForGame(final IMPL game, final P player) {
 if (game instanceof MultiPlayerGame) {
  if (!game.getAllPlayers().contains(player)) {
   throw new PlayerNotPartOfGameException();
  }
 } else if (game instanceof SinglePlayerGame) {
  if (!((SinglePlayerGame) game).getPlayer().equals(player)) {
   throw new PlayerNotPartOfGameException();
  }
 }
}