Deck.m

//
//  Deck.m
//  Assignment1
//
//  Created by Victor, Jason M on 2/4/14.
//  Copyright (c) 2014 Victor, Jason M. All rights reserved.
//

#import "Deck.h"

@interface Deck()
@property (strong, nonatomic) NSMutableArray *cards; // of Card
@end


@implementation Deck



- (NSMutableArray *) cards {
    if (!_cards) _cards = [[NSMutableArray alloc] init];
    return _cards;
}


- (void) addCard:(Card *)card atTop:(BOOL) atTop {

    if (atTop) {
        [self.cards insertObject:card atIndex:0];
    }
    else {
        [self.cards addObject:card];
    }
}


- (void) addCard:(Card *)card {
    [self addCard:card atTop:NO];
}

- (Card *) drawRandomCard {
    Card * randomCard = nil;

    if ([self.cards count]) {
        unsigned index = arc4random() % [self.cards count];
        randomCard = self.cards[index];
        [self.cards removeObjectAtIndex:index];
    }
    return randomCard;
}



@end