// Chooses n random cards from haystack
public static Deck randomCards(Deck haystack, int n) {
Deck tbr = new Deck();
while (tbr.length() < n) {
int random = Randomness.random(0, haystack.length() - 1);
Card c = haystack.cardAt(random);
if (tbr.hasCard(c)) continue;
tbr.add(c);
}
return tbr;
}
// Chooses 3 cards to pass.
public static void handleRequestPass(Message m) {
Deck toPass = randomCards(hand, 3);
for (int i = 0; i < toPass.length(); i++) hand.remove(toPass.cardAt(i));
Message m2 = new Message(Message.PASS, null, toPass);
server.sendMessage(m2);
}
// Receives passed cards.
public static void handleSendPassed(Message m) {
Deck d = m.getDeck();
for (int i = 0; i < d.length(); i++) hand.add(d.cardAt(i));
hand.sort();
}