four square

ViewController.m

//
//  ViewController.m
//  FourSquare
//
//  Created by MizushimaYusuke on 2017/10/16.
//  Copyright © 2017 MizushimaYusuke. All rights reserved.
//

#import "ViewController.h"
@import SpriteKit;

@interface ViewController ()
@property (nonatomic, weak) SKScene *scene;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self setupScene];
    [self createPanels];
}

- (void)setupScene {
    SKView *sv = [[SKView alloc] initWithFrame:self.view.bounds];
    SKScene *s = [SKScene sceneWithSize:sv.frame.size];
    [sv presentScene:s];
    s.backgroundColor = [UIColor yellowColor];
    
    [self.view addSubview:sv];
    self.scene = s;
}

- (void)createPanels {
    float l = 60;
    for (int i=0; i<10; i++) {
        for (int j=0; j<6; j++) {
            SKNode *node = [self createMarkPanel];
            node.name = [NSString stringWithFormat:@"%d", i + (j % 2)];
            node.position = CGPointMake(i * l + l, j * l + l * 0.5);
            [self.scene addChild:node];
        }
    }
}

- (SKNode *)createMarkPanel {
    float l = 20;
    SKNode *panel = [SKNode node];
    for (int i=0; i<4; i++) {
        SKSpriteNode *box = [SKSpriteNode spriteNodeWithColor:[UIColor blackColor] size:CGSizeMake(l*0.5, l*0.5)];
        box.position = CGPointMake((i % 2) * l, (i / 2) * l);
        [panel addChild:box];
    }
    return panel;
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    for (SKNode *node in self.scene.children) {
        int n = node.name.length > 0 ? [node.name intValue] : 0;
        if (n % 2 == 1) {
            [node.children enumerateObjectsUsingBlock:^(SKNode * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
                [obj runAction:[SKAction rotateByAngle:M_PI * 0.25 duration:0.5]];
            }];
        }
        
    }
}

@end

http://lepetit-prince.net/ios/?p=6751