【发布时间】：2013-03-14 17:45:55
【问题描述】：
在我的纸牌配对游戏中：
-我有一种方法可以检查在特定索引中翻转的卡片。它基本上是应用程序中的整个逻辑。
-我有另一种检查匹配的方法。
现在，我在视图控制器中创建了一个切换按钮，它将告诉控制器用户将模式更改为“3”卡而不是基本模式（2 卡）。
我的问题是，如果有超过 2 个匹配项，我如何告诉控制器检查匹配方法。这让我发疯，请帮我解决这个问题。
我在控制器中还有一个 updateUI 方法，可以让匹配的卡片消失，所以我需要确保它的行为相同。
以下代码展示了flipCardAtIndex方法，以相同的顺序匹配方法和视图控制器：
CardMatchingGame.m（最后一个方法是flipCardAtIndex）：
#import "CardMatchingGame.h"
#import "PlayingCardsDeck.h"
@interface CardMatchingGame()
@property (readwrite, nonatomic) int score;
@property (strong, nonatomic) NSMutableArray *cards;
@property (strong, nonatomic) NSString *notification;
@end
@implementation CardMatchingGame
-(NSMutableArray *) cards {
if (!_cards) _cards = [[NSMutableArray alloc] init];
return _cards;
}
-(id)initWithCardCount:(NSUInteger)count usingDeck:(Deck *)deck {
self = [super init];
if (self) {
for (int i = 0; i < count; i++) {
Card *card = [deck drawRandonCard];
if (!card) {
self = nil;
} else {
self.cards[i] = card;
}
}
}
return self;
}
-(Card *) cardAtIndex:(NSUInteger)index {
return (index < self.cards.count) ? self.cards[index] : nil;
}
#define FLIP_COST 1
#define MISMATCH_PENALTY 2
#define BONUS 4
-(void) flipCardAtIndex:(NSUInteger)index {
Card *card = [self cardAtIndex:index];
if (!card.isUnplayable) {
if (!card.isFaceUp) {
for (Card *otherCard in self.cards) {
if (otherCard.isFaceUp && !otherCard.isUnplayable) {
NSMutableArray *myCards = [[NSMutableArray alloc] init];
[myCards addObject:otherCard];
int matchScore = [card match:myCards];
if (matchScore) {
otherCard.unplayble = YES;
card.unplayble = YES;
self.notification = [NSString stringWithFormat:@"%@ & %@ match!", card.contents, otherCard.contents];
self.score += matchScore * BONUS;
} else {
otherCard.faceUp = NO;
self.score -= MISMATCH_PENALTY;
self.notification = [NSString stringWithFormat:@"%@ did not matched to %@", card.contents, otherCard.contents];
}
break;
}
}
self.score -= FLIP_COST;
}
card.faceUp = !card.isFaceUp;
}
}
@end
PlayingCards.m（仅第一种方法，匹配方法）：
#import "PlayingCards.h"
@implementation PlayingCards
@synthesize suit = _suit;
//overriding the :match method of cards to give different acore if its only a suit match or a number match
-(int)match:(NSArray *)cardToMatch {
int score = 0;
for (int i = 0; i < cardToMatch.count; i++) {
PlayingCards *nextCard = cardToMatch[i];
if ([nextCard.suit isEqualToString:self.suit]) {
score += 1;
} else if (nextCard.rank == self.rank) {
score += 4;
}
}
return score;
}
我的视图控制器（最后一种方法是切换按钮）：
#import "CardGameViewController.h"
#import "PlayingCardsDeck.h"
#import "CardMatchingGame.h"
@interface CardGameViewController ()
@property (weak, nonatomic) IBOutlet UILabel *flipsLabel;
@property (weak, nonatomic) IBOutlet UILabel *notificationLabel;
@property (weak, nonatomic) IBOutlet UILabel *scoreCounter;
@property (strong, nonatomic) IBOutletCollection(UIButton) NSArray *cardButtons;
@property (strong, nonatomic) CardMatchingGame *game;
@property (nonatomic) int flipsCount;
@property (nonatomic) NSNumber *mode;
//@property (weak, nonatomic) IBOutlet UISwitch *mySwitch;
@property (weak, nonatomic) IBOutlet UISwitch *mySwitch;
@end
@implementation CardGameViewController
@synthesize mode = _mode;
//creating the getter method that creates a new card game.
-(CardMatchingGame *) game {
if (!_game) _game = [[CardMatchingGame alloc] initWithCardCount:self.cardButtons.count usingDeck:[[PlayingCardsDeck alloc] init]];
return _game;
}
//creating a setter for the IBOutletCollection cardButtons
-(void) setCardButtons:(NSArray *)cardButtons {
_cardButtons = cardButtons;
[self updateUI];
}
//creating the setter for the flipCount property. Whick is setting the flipsLabel to the right text and adding the number of counts.
-(void) setFlipsCount:(int)flipsCount {
_flipsCount = flipsCount;
self.flipsLabel.text = [NSString stringWithFormat:@"Flips: %d", self.flipsCount];
}
-(void) updateUI {
for (UIButton *cardButton in self.cardButtons) {
Card *card = [self.game cardAtIndex:[self.cardButtons indexOfObject:cardButton]];
[cardButton setTitle:card.contents forState:UIControlStateSelected];
[cardButton setTitle:card.contents forState:UIControlStateSelected|UIControlStateDisabled];
cardButton.selected = card.isFaceUp;
cardButton.enabled = !card.unplayble;
if (card.unplayble) {
cardButton.alpha = 0.1;
}
//updating the score
self.scoreCounter.text = [NSString stringWithFormat:@"Score: %d", self.game.score];
//if notification in CardMatchingGame.m is no nil, it will be presented
if (self.game.notification) {
self.notificationLabel.text = self.game.notification;
}
}
}
//Here I created a method to flipCards when the card is selected, and give the user a random card from the deck each time he flips the card. After each flip i'm incrementing the flipCount setter by one.
- (IBAction)flipCard:(UIButton *)sender {
[self.game flipCardAtIndex:[self.cardButtons indexOfObject:sender] forMode:self.mode];
self.flipsCount++;
[self updateUI];
}
//sending an alert if the user clicked on new game button
- (IBAction)newGame:(UIButton *)sender {
UIAlertView* mes=[[UIAlertView alloc] initWithTitle:@"Are you sure..?" message:@"This will start a new game" delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil];
[mes show];
}
//preforming an action according to the user choice for the alert yes/no to start a new game
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex != [alertView cancelButtonIndex]) {
self.flipsCount = 0;
self.game = nil;
for (UIButton *button in self.cardButtons) {
Card *card = [self.game cardAtIndex:[self.cardButtons indexOfObject:button]];
card.unplayble = NO;
card.faceUp = NO;
button.alpha = 1;
}
self.notificationLabel.text = nil;
[self updateUI];
}
}
-(void) setMode:(NSNumber *)mode {
mode = _mode;
}
-(void) switchValueChange:(id)sender {
UISwitch *Switch = (UISwitch *) sender;
NSNumber *twoCards = [NSNumber numberWithInt:2];
NSNumber *threeCards = [NSNumber numberWithInt:3];
if (Switch.on) {
self.mode = twoCards;
}
else
{
self.mode = threeCards;
}
}
- (void)viewDidLoad
{
UISwitch *mySwitch;
[super viewDidLoad];
[mySwitch addTarget:self action:@selector(switchValueChange:) forControlEvents:UIControlEventValueChanged];
[self updateUI];
}
@end
【问题讨论】：
-
我不完全清楚你在这里问什么。您只是在编写一个同时比较三张卡片的方法时遇到问题吗？
-
嘿 Max，不，我想看看模型如何识别他需要测试 3 张卡而不是一张卡，并将其传递给控制器。 （当然，开关应该告诉控制器他需要从模型中询问这个计算，这对 mvc 来说非常新，所以我希望我做对了）。计算匹配的方法已经在做这项工作。问题是这个方法如何处理控制器匹配 3 而不是 2 @Max
标签： iphone ios objective-c cocoa-touch cocoa