AまわしてF

アルファベットのAの真ん中棒を回してFにするiPhoneアプリのサンプルコードを描いてみます。

#import “ViewController.h”

@import SpriteKit;

@interface ViewController ()

@property (nonatomic, weak) SKScene *scene;

@end

@implementation ViewController

– (void)viewDidLoad {

    [super viewDidLoad];

    [self setupScene];

    [self createA];

}

– (void)setupScene {

    SKView *sv = [[SKView alloc] initWithFrame:self.view.bounds];

    [self.view addSubview:sv];

    SKScene *s = [SKScene sceneWithSize:sv.frame.size];

    s.backgroundColor = [UIColor colorWithHue:0.1 saturation:0.3 brightness:1 alpha:1];

    [sv presentScene:s];

    self.scene = s;

}

– (void)createA {

    

    UIColor *color1 = [UIColor colorWithHue:0.4 saturation:0.5 brightness:1 alpha:1];

    UIBezierPath *path = [UIBezierPath bezierPath];

    [path addArcWithCenter:CGPointZero radius:100 startAngle:0 endAngle:M_PI clockwise:YES];

    SKShapeNode *head = [SKShapeNode shapeNodeWithPath:path.CGPath];

    head.name = @”head”;

    head.position = CGPointMake(CGRectGetMidX(self.view.bounds), 300);

    head.lineWidth = 20;

    head.strokeColor = color1;

    [self.scene addChild:head];

    

    SKSpriteNode *r = [SKSpriteNode spriteNodeWithColor:color1 size:CGSizeMake(20, 100)];

    r.anchorPoint = CGPointMake(0.5, 1.0);

    r.name = @”right”;

    r.position = CGPointMake(CGRectGetMidX(self.view.bounds) + 100, 300);

    [self.scene addChild:r];

    

    SKSpriteNode *l = [SKSpriteNode spriteNodeWithColor:color1 size:CGSizeMake(20, 100)];

    l.position = CGPointMake(CGRectGetMidX(self.view.bounds) – 100, 250);

    [self.scene addChild:l];

    

    SKShapeNode *bar = [SKShapeNode shapeNodeWithRect:CGRectMake(-20, –10, 200, 20) cornerRadius:10];

    bar.name = @”bar”;

    bar.fillColor = [UIColor colorWithHue:0.8 saturation:0.01 brightness:1 alpha:1];

    bar.position = CGPointMake(CGRectGetMidX(self.view.bounds) – 100, 280);

    bar.zPosition = 10;

    [self.scene addChild:bar];

    

}

– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

    SKNode *bar = [self.scene childNodeWithName:@”bar”];

    

    SKNode *r = [self.scene childNodeWithName:@”right”];

    

    SKNode *head = [self.scene childNodeWithName:@”head”];

    UIBezierPath *path = [UIBezierPath bezierPath];

    [path addArcWithCenter:CGPointZero radius:100 startAngle:1.5 * M_PI endAngle:2.0*M_PI clockwise:YES];

    SKShapeNode *mask = [SKShapeNode shapeNodeWithPath:path.CGPath];

    mask.lineWidth = 22;

    mask.strokeColor = self.scene.backgroundColor;

    mask.zPosition = 9;

    mask.position = head.position;

    

    [bar runAction:[SKAction rotateByAngle:2.0 * M_PI duration:2.0]];

    

    [r runAction:[SKAction scaleXTo:1 y:0 duration:1.0] completion:^{

        [self.scene addChild:mask];

        [mask runAction:[SKAction rotateByAngle:0.3 * M_PI duration:1.0]];

    }];

    

}

@end