data grid

ViewController.m

//
//  ViewController.m
//  DiaGrid
//
//  Created by MizushimaYusuke on 2017/06/19.
//  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 createDiaGrid];
}

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

- (void)createDiaGrid {
    float l = 55;
    for (int i=0; i<20; i++) {
        for (int j=0; j<12; j++) {
            float x = l * i;
            float y = l * j;
            SKNode *dia = ((i + (j % 2)) % 2) == 0 ? [self shapeA] : [self shapeB];
            dia.position = CGPointMake(x, y);
            [self.scene addChild:dia];
        }
    }
}

- (SKNode *)shapeA {
    int shape[][5] = {
        {0,0,1,0,0},
        {0,1,1,1,0},
        {1,1,0,1,1},
        {0,1,1,1,0},
        {0,0,1,0,0},
    };
    return [self createShape:shape color:[UIColor yellowColor]];
}

- (SKNode *)shapeB {
    int shape[][5] = {
        {0,0,1,0,0},
        {0,1,0,1,0},
        {1,0,1,0,1},
        {0,1,0,1,0},
        {0,0,1,0,0},
    };
    return [self createShape:shape color:[UIColor whiteColor]];
}

- (SKNode *)createShape:(int[][5])shape color:(UIColor *)color {
    SKNode *a = [SKNode node];
    a.name = @"dia";
    float l = 10;
    for (int i=0; i<5; i++) {
        for (int j=0; j<5; j++) {
            if (shape[i][j] == 1) {
                float x = l * i;
                float y = l * j;
                SKShapeNode *dot = [SKShapeNode shapeNodeWithRect:CGRectMake(x, y, l, l)];
                if (i==2 && j==2) {
                    dot = [SKShapeNode shapeNodeWithRect:CGRectMake(x + 2, y + 2, l - 4, l - 4)];
                }
                dot.lineWidth = 0;
                dot.fillColor = color;
                [a addChild:dot];
            }
        }
    }
    return a;
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    [self.scene enumerateChildNodesWithName:@"dia" usingBlock:^(SKNode * _Nonnull node, BOOL * _Nonnull stop) {
        if (arc4random_uniform(5) == 0) {
            [node runAction:[SKAction sequence:@[[SKAction scaleTo:0.5 duration:1.0], [SKAction scaleTo:1.0 duration:1.0]]]];
        }
    }];
}

@end

http://lepetit-prince.net/ios/?p=6386