パネルに描いてある数だけリングを進めてゴールを目指すiPhoneアプリのサンプルコードを描いてみます。
@import SpriteKit;
#import “ViewController.h”
@interface MoveScene : SKScene
@end
@implementation MoveScene
– (void)didMoveToView:(SKView *)view
{
self.backgroundColor = [SKColor colorWithRed:0.9 green:0.9 blue:0.8 alpha:1];
[self createNumbers];
[self createGoal];
[self createPlayerRing];
[self createReset];
}
– (void)createNumbers
{
for (int i=0; i<36; i++) {
float x = (i % 6) * 50 + 35;
float y = (i / 6) * 50 + 120;
int num = (arc4random() % 4) + 1;
SKSpriteNode *n = [SKSpriteNode spriteNodeWithColor:[SKColor colorWithHue:num * 0.18 saturation:0.8 brightness:0.7 alpha:1] size:CGSizeMake(50, 50)];
n.name = [@(i) stringValue];
n.position = CGPointMake(x, y);
[self addChild:n];
SKLabelNode *l = [SKLabelNode node];
l.text = [@(num) stringValue];
l.position = CGPointMake(0, 0);
l.verticalAlignmentMode = SKLabelVerticalAlignmentModeCenter;
l.horizontalAlignmentMode = SKLabelHorizontalAlignmentModeCenter;
l.fontColor = [SKColor whiteColor];
[n addChild:l];
}
}
– (void)createGoal
{
NSInteger num = (arc4random() % 36);
SKNode *target = [self childNodeWithName:[@(num) stringValue]];
SKSpriteNode *goal = [SKSpriteNode spriteNodeWithColor:[SKColor whiteColor] size:CGSizeMake(50, 50)];
goal.name = @”goal”;
goal.position = target.position;
[self addChild:goal];
for (int i=0; i<5; i++) {
SKSpriteNode *line = [SKSpriteNode spriteNodeWithColor:(i%2) ? [SKColor whiteColor] : [SKColor blackColor] size:CGSizeMake(50, 10)];
line.position = CGPointMake(0, 10 * i –20);
[goal addChild:line];
}
}
– (void)createPlayerRing
{
UIBezierPath *path = [UIBezierPath bezierPathWithArcCenter:CGPointZero radius:20 startAngle:0 endAngle:2.0*M_PI clockwise:NO];
SKShapeNode *ring = [SKShapeNode node];
ring.name = @”ring”;
ring.path = path.CGPath;
ring.lineWidth = 4;
[self addChild:ring];
SKNode *target = [self childNodeWithName:@”22″];
ring.position = target.position;
}
– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
CGPoint p = [[touches anyObject] locationInNode:self];
NSArray *hits = [self nodesAtPoint:p];
for (SKNode *hit in hits) {
if (hit.name.length > 0 && hit.name.length < 3) {
[self moveRing:hit];
return;
}
if ([hit.name isEqual:@”reset”]) {
[self reset];
return;
}
}
}
– (void)moveRing:(SKNode *)number
{
SKNode *ring = [self childNodeWithName:@”ring”];
NSInteger n = [((SKLabelNode *)number.children[0]).text integerValue];
if (fabs(ring.position.y – number.position.y) < 5) {
float dx = (ring.position.x – number.position.x > 0) ? -n : n;
SKAction *move = [SKAction moveByX:dx * 50 y:0 duration:0.5 * n];
[ring runAction:move];
}
else if (fabs(ring.position.x – number.position.x) < 5) {
float dy = (ring.position.y – number.position.y > 0) ? -n : n;
SKAction *move = [SKAction moveByX:0 y:dy * 50 duration:0.5 * n];
[ring runAction:move];
}
}
– (void)createReset
{
SKLabelNode *reset = [SKLabelNode node];
reset.name = @”reset”;
reset.text = @”reset”;
reset.position = CGPointMake(CGRectGetMidX(self.frame), 50);
[self addChild:reset];
}
– (void)reset
{
[self.children makeObjectsPerformSelector:@selector(removeFromParent)];
[self createNumbers];
[self createGoal];
[self createPlayerRing];
[self createReset];
}
@end
@interface ViewController ()
@end
@implementation ViewController
– (void)viewDidLoad
{
[super viewDidLoad];
SKView *spriteView = [[SKView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:spriteView];
SKScene *scene = [[MoveScene alloc] initWithSize:spriteView.frame.size];
[spriteView presentScene:scene];
}
@end