Challenge 159 - Daily Programmer - Rock Paper Scissor Lizard Spock Part 1

159 Rock Paper Scissors Lizard Spock

For reddit/r/dailyprogrammer on 4-21-2014 Challenge #159

main .m

//
//  main.m
//  159 RPSLS part 1
//

#import <Foundation/Foundation.h>
#import "Player.h"
#import "RPSLSEngine.h"

int main(int argc, const char * argv[])
{
    @autoreleasepool {
        RPSLSEngine *engine = [[RPSLSEngine alloc] init];
        bool isGameOver = false;
        Player *one = [[Player alloc] initWithName: @"Human"];
        Player *two = [[Player alloc] init];

        while (!isGameOver) {
            [one PromptForMove];
            if ([one move] < Rock || [one move] > Spock) {
                isGameOver = true;
            } else {
                [engine playedAGame];
                [two PickRandomMove];
                [one DisplayMoveText];
                [two DisplayMoveText];
                [engine comparePlayer: one toPlayer: two];
            }
        } // game loop
        printf("\n====== Game Stats ======\n\n");
        printf("Games Played: %d\n", [engine gamesPlayed]);
        printf("%s won: %d games (%%%f win rate)\n",
               [[one name] UTF8String],
               [one wins],
               ((float) [one wins] / (float) [engine gamesPlayed] * 100.0));
        printf("%s won: %d games (%%%f win rate)\n",
               [[two name] UTF8String],
               [two wins],
               ((float) [two wins] / (float) [engine gamesPlayed] * 100.0));
        printf("%d ties (%%%f tie rate)\n",
               [one ties],
               ((float) [one ties] / (float) [engine gamesPlayed] * 100.0));
    }
    return 0;
}

Player.h

//
//  Player.h
//  159 RPSLS part 1
//

#import <Foundation/Foundation.h>

typedef enum MoveType: NSUInteger {
    Rock,
    Paper,
    Scissor,
    Lizard,
    Spock
} MoveType;


@interface Player : NSObject

@property (readonly) int wins;
@property (readonly) int ties;

@property (readonly) NSString *name;
@property (readonly) MoveType move;

- (instancetype) initWithName: (NSString *) name;

- (NSString *) MoveString;
- (void) DisplayMoveText;
- (void) PickRandomMove;
- (void) PromptForMove;

- (void) winAGame;
- (void) tieAGame;

@end

Player.m

//
//  Player.m
//  159 RPSLS part 1
//

#import "Player.h"

@implementation Player {
    NSArray *pick;
}

@synthesize wins;
@synthesize ties;
@synthesize name;
@synthesize move;

- (instancetype) initWithName: (NSString *) n {
    if (self = [super init]) {
        name = [n copy];
        move = Rock;
        wins = 0;
        ties = 0;
        pick = [NSArray arrayWithObjects: @"Rock", @"Paper", @"Scissors", @"Lizard", @"Spock", nil];
    }
    return self;
}

- (instancetype) init {
    return [self initWithName: @"Computer"];
}

- (NSString *) MoveString {
    return [pick objectAtIndex: move];
}

- (void) DisplayMoveText {
    printf("%s picks %s\n", [name UTF8String], [[pick objectAtIndex: move] UTF8String]);
}

- (void) PickRandomMove {
    move = arc4random() % 5;
}

- (void) PromptForMove {
    char dummy;
    
    printf("\n\nEnter Move by typing a number:\n");
    printf("0) Rock\n");
    printf("1) Paper\n");
    printf("2) Scissors\n");
    printf("3) Lizard\n");
    printf("4) Spock\n");
    printf("5) ==Quit Game==\nYour Move>");
    scanf("%ld%c", &move, &dummy);
    printf("\n");
}

- (void) winAGame {
    wins++;
}

- (void) tieAGame {
    ties++;
}

@end

RPSLEngine.h

//
//  RPSLSEngine.h
//  159 RPSLS part 1
//


#import <Foundation/Foundation.h>
@class Player;

@interface RPSLSEngine : NSObject

@property (readonly) int gamesPlayed;

- (void) playedAGame;
- (void) comparePlayer: (Player *) one toPlayer: (Player *) two;

@end

RPSLEngine.m

//
//  RPSLSEngine.m
//  159 RPSLS part 1
//

#import "RPSLSEngine.h"
#import "Player.h"

@implementation RPSLSEngine {
    NSArray *verbs;
    NSArray *results;
}

@synthesize gamesPlayed;

- (instancetype) init {
    if (self = [super init]) {

        verbs = [NSArray arrayWithObjects:
                 @"ties", @"cut", @"covers", @"crushes",
                 @"poisons", @"smashes", @"decapitate", @"eats",
                 @"disproves", @"vaporizes", nil];
        
        results = [NSArray arrayWithObjects:
                   @[@0, @-2,  @3,  @3, @-9],
                   @[@2, @0, @-1, @-7,  @8],
                   @[@-3, @1,  @0,  @6, @-5],
                   @[@-3, @7, @-6,  @0,  @4],
                   @[@9, @-8,  @5, @-4,  @0], nil];
                   
        gamesPlayed = 0;
    }
    return self;
}

- (void) playedAGame {
    gamesPlayed++;
}

- (void) comparePlayer: (Player *) one toPlayer: (Player *) two {
    int result = [[[results objectAtIndex: (NSUInteger) [one move]] objectAtIndex: (NSUInteger) [two move]] intValue];

    if (result == 0) {
        printf("%s %s %s\n", [[one name] UTF8String], [[verbs objectAtIndex: result] UTF8String], [[two name] UTF8String]);
        [one tieAGame];
        [two tieAGame];
    } else if (result < 0) {
        printf("%s %s %s\n", [[two MoveString] UTF8String], [[verbs objectAtIndex: (result * - 1)] UTF8String], [[one MoveString] UTF8String]);
        printf("%s wins!\n", [[two name] UTF8String]);
        [two winAGame];
    } else {
        printf("%s %s %s\n", [[one MoveString] UTF8String], [[verbs objectAtIndex: result] UTF8String], [[two MoveString] UTF8String]);
        printf("%s wins!\n", [[one name] UTF8String]);
        [one winAGame];
    }
}
@end