/**
* Makes a guess.
*
* @param player the player making the guess.
* @param guess the guess to make.
* @return the next step in the current game.
* @throws GameException if the guess cannot be made.
*/
public GameStep guess(Player player, Number guess) throws GameException {
GameStep gs = new GameStep(GameStep.Type.GUESS, player);
this.checkStep(gs, this.gameStep);
Round r = this.getLastRound();
if (r != null) {
Map<Player, Number> guesses = r.getGuesses();
if (r.getGuesses().containsKey(player)) {
if (this.players.size() == guesses.size()) {
r = new Round();
this.rounds.add(r);
} else {
throw new GameException(String.format("%s has already made a guess this round", player));
}
}
} else {
r = new Round();
this.rounds.add(r);
}
int playerIndex = this.players.indexOf(player);
int opponentIndex = playerIndex + 1;
if (opponentIndex == this.players.size()) {
opponentIndex = 0;
}
Player opponent = this.players.get(opponentIndex);
r.addGuess(player, opponent, guess);
if (this.isGameOver()) {
this.gameStep = new GameStep(GameStep.Type.GAME_OVER);
} else {
Player nextPlayer = null;
if (playerIndex == this.players.size() - 1) {
nextPlayer = this.players.get(0);
} else {
nextPlayer = this.players.get(playerIndex + 1);
}
this.gameStep = new GameStep(GameStep.Type.GUESS, nextPlayer);
}
return this.gameStep;
}
