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- updated the code with the changed from Lecture 3 (Objective-C)
- improved the code to work without warning on 64bit as well as 32bit
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Jeroen Wesbeek
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Nov 6, 2013
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| // | ||
| // CardMatchingGame.h | ||
| // Matchismo | ||
| // | ||
| // Created by Jeroen Wesbeek on 05/11/13. | ||
| // Copyright (c) 2013 MyCompany. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
| #import "Deck.h" | ||
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| @interface CardMatchingGame : NSObject | ||
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| // designated initializer | ||
| - (instancetype)initWithCardCount:(NSUInteger)count | ||
| usingDeck:(Deck *)deck; | ||
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| - (void)chooseCardAtIndex:(NSUInteger)index; | ||
| - (Card *)cardAtIndex:(NSUInteger)index; | ||
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| @property (nonatomic, readonly) NSInteger score; // make score read only in public API | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| // | ||
| // CardMatchingGame.m | ||
| // Matchismo | ||
| // | ||
| // Created by Jeroen Wesbeek on 05/11/13. | ||
| // Copyright (c) 2013 MyCompany. All rights reserved. | ||
| // | ||
|
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| #import "CardMatchingGame.h" | ||
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| @interface CardMatchingGame() | ||
| @property (nonatomic, readwrite) NSInteger score; // make score writable in out private API | ||
| @property (nonatomic, strong) NSMutableArray *cards; // of Card | ||
| @end | ||
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| @implementation CardMatchingGame | ||
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| - (NSMutableArray *)cards | ||
| { | ||
| if (!_cards) _cards = [[NSMutableArray alloc] init]; | ||
| return _cards; | ||
| } | ||
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| - (instancetype)initWithCardCount:(NSUInteger)count | ||
| usingDeck:(Deck *)deck | ||
| { | ||
| self = [super init]; | ||
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| if (self) { | ||
| for (NSUInteger i = 0; i < count; i++) { | ||
| Card *card = [deck drawRandomCard]; | ||
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| if (card) { | ||
| [self.cards addObject:card]; | ||
| } else { | ||
| self = nil; | ||
| break; | ||
| } | ||
| } | ||
| } | ||
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| return self; | ||
| } | ||
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| //#define MISMATCH_PENALTY 2 // it's a matter of preference what to use, however: | ||
| static const int MISMATCH_PENALTY = 2; // this is typed so it will show in the debugger | ||
| static const int MATCH_BONUS = 4; | ||
| static const int COST_TO_CHOOSE = 1; | ||
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| - (void)chooseCardAtIndex:(NSUInteger)index | ||
| { | ||
| Card *card = [self cardAtIndex:index]; | ||
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| if (!card.isMatched) { | ||
| if (card.isChosen) { | ||
| card.chosen = NO; | ||
| } else { | ||
| // match against another card | ||
| for (Card *otherCard in self.cards) { | ||
| if (otherCard.isChosen && !otherCard.isMatched) { | ||
| int matchScore = [card match:@[otherCard]]; | ||
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| if (matchScore) { | ||
| // increase score | ||
| self.score += (matchScore * MATCH_BONUS); | ||
|
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| // mark cards as matched | ||
| card.matched = YES; | ||
| otherCard.matched = YES; | ||
| } else { | ||
| // mismath penalty when cards do no match | ||
| self.score -= MISMATCH_PENALTY; | ||
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| // flip othercard | ||
| otherCard.chosen = NO; | ||
| } | ||
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| break; | ||
| } | ||
| } | ||
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| self.score -= COST_TO_CHOOSE; | ||
| card.chosen = YES; | ||
| } | ||
| } | ||
| } | ||
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| - (Card *)cardAtIndex:(NSUInteger)index | ||
| { | ||
| return (index < [self.cards count]) ? self.cards[index] : nil; | ||
| } | ||
|
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| @end |
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