import java.util.Scanner;

/**

* Simulates a game of Crazy Eights. See

* https://en.wikipedia.org/wiki/Crazy_Eights

* for basic play and scoring rules.

*/

public class Eights {

private Player one;

private Player two;

private Hand drawPile;

private Hand discardPile;

private Scanner in;

/**

* Initializes the state of the game.

*/

public Eights() {

Deck deck = new Deck("Deck");

deck.shuffle();

// deal cards to each player

int handSize = 5;

one = new Player("Allen");

deck.deal(one.getHand(), handSize);

two = new Player("Chris");

deck.deal(two.getHand(), handSize);

// turn one card face up

discardPile = new Hand("Discards");

deck.deal(discardPile, 1);

// put the rest of the deck face down

drawPile = new Hand("Draw pile");

deck.dealAll(drawPile);

// create the scanner we'll use to wait for the user

in = new Scanner(System.in);

}

/**

* Returns true if either hand is empty.

*/

public boolean isDone() {

return one.getHand().empty() || two.getHand().empty();

}

/**

* Moves cards from the discard pile to the draw pile and shuffles.

*/

public void reshuffle() {

// save the top card

Card prev = discardPile.popCard();

// move the rest of the cards

discardPile.dealAll(drawPile);

// put the top card back

discardPile.addCard(prev);

// shuffle the draw pile

drawPile.shuffle();

}

/**

* Returns a card from the draw pile.

*/

public Card draw() {

if (drawPile.empty()) {

reshuffle();

}

return drawPile.popCard();

}

/**

* Switches players.

*/

public Player nextPlayer(Player current) {

if (current == one) {

return two;

} else {

return one;

}

}

/**

* Displays the state of the game.

*/

public void displayState() {

one.display();

two.display();

discardPile.display();

System.out.print("Draw pile: ");

System.out.println(drawPile.size() + " cards");

}

/**

* Waits for the user to press enter.

*/

public void waitForUser() {

in.nextLine();

}

/**

* One player takes a turn.

*/

public void takeTurn(Player player) {

Card prev = discardPile.last();

Card next = player.play(this, prev);

discardPile.addCard(next);

System.out.println(player.getName() + " plays " + next);

System.out.println();

}

/**

* Plays the game.

*/

public void playGame() {

Player player = one;

// keep playing until there's a winner

while (!isDone()) {

displayState();

waitForUser();

takeTurn(player);

player = nextPlayer(player);

}

// display the final score

one.displayScore();

two.displayScore();

}

/**

* Creates the game and runs it.

*/

public static void main(String[] args) {

Eights game = new Eights();

game.playGame();

}

}