ポケットに書いてある数字になるように四角をうごかしてあそぶ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;
@property (nonatomic, weak) SKNode *coin;
@end
@implementation ViewController
– (void)viewDidLoad {
[super viewDidLoad];
[self setupScene];
[self createPockets];
[self createCoins];
}
– (void)setupScene {
SKView *spriteView = [[SKView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:spriteView];
SKScene *scene = [SKScene sceneWithSize:spriteView.frame.size];
scene.backgroundColor = [UIColor colorWithHue:0.2 saturation:0.7 brightness:1 alpha:1];
[spriteView presentScene:scene];
self.scene = scene;
self.scene.physicsBody = [SKPhysicsBody bodyWithEdgeLoopFromRect:self.view.bounds];
}
– (void)createPockets {
float w = CGRectGetMaxX(self.view.bounds);
float h = CGRectGetMaxY(self.view.bounds);
float r = w / 8.0;
UIBezierPath *path = [UIBezierPath bezierPath];
[path addArcWithCenter:CGPointZero radius:r startAngle:0 endAngle:1.0*M_PI clockwise:NO];
[path appendPath:[UIBezierPath bezierPathWithRect:CGRectMake(-r, 0, r * 2.0, r)]];
for (int i=0; i<3; i++) {
float x = (w / 6.0) * (2 * i +1);
float y = h * 0.4;
SKShapeNode *pocket = [SKShapeNode node];
pocket.name = @”pocket”;
pocket.path = path.CGPath;
pocket.fillColor = [UIColor colorWithHue:0.4 saturation:0.8 brightness:1 alpha:1];
pocket.position = CGPointMake(x, y);
[self.scene addChild:pocket];
SKLabelNode *ten = [SKLabelNode node];
ten.text = @”10″;
ten.fontSize = 60;
[pocket addChild:ten];
}
}
– (void)createCoins {
float w = CGRectGetMaxX(self.view.bounds) / 7;
NSArray *nums = @[@”4″, @”8″, @”6″, @”5″, @”7″];
for (int i=0; i<5; i++) {
SKSpriteNode *coin = [SKSpriteNode spriteNodeWithColor:[UIColor colorWithHue:i * 0.15 saturation:0.9 brightness:0.7 alpha:1] size:CGSizeMake(40, 40)];
coin.position = CGPointMake((i+1) * w, 140);
coin.name = @”coin”;
SKLabelNode *n = [SKLabelNode node];
n.text = nums[i];
n.verticalAlignmentMode = SKLabelVerticalAlignmentModeCenter;
[coin addChild:n];
coin.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:coin.size];
[self.scene addChild:coin];
}
}
– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
CGPoint p = [[touches anyObject] locationInNode:self.scene];
[self.scene enumerateChildNodesWithName:@”coin” usingBlock:^(SKNode *node, BOOL *stop) {
if ([node containsPoint:p]) {
self.coin = node;
node.xScale = 1.4;
node.yScale = 1.4;
node.physicsBody = nil;
}
}];
}
– (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
CGPoint p = [[touches anyObject] locationInNode:self.scene];
if (self.coin) {
self.coin.position = p;
}
}
– (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
CGPoint p = [[touches anyObject] locationInNode:self.scene];
if (self.coin) {
[self.scene enumerateChildNodesWithName:@”pocket” usingBlock:^(SKNode *node, BOOL *stop) {
if ([node containsPoint:p]) {
int pocketNumbe = [[(SKLabelNode *)node.children[0] text] intValue];
int coinNumber = [[(SKLabelNode *)self.coin.children[0] text] intValue];
if (pocketNumbe – coinNumber <= 0) {
// remove pocket
[node runAction:[SKAction fadeOutWithDuration:0.5]];
node.name = @””;
} else {
[(SKLabelNode *)node.children[0] setText:[NSString stringWithFormat:@”%d”, pocketNumbe – coinNumber]];
}
if (pocketNumbe – coinNumber >= 0) {
[self.coin runAction:[SKAction fadeOutWithDuration:0.5] completion:^{
[self.coin removeFromParent];
}];
} else {
[(SKLabelNode*)self.coin.children[0] setText:[NSString stringWithFormat:@”%d”, coinNumber – pocketNumbe]];
self.coin.xScale = 1.0;
self.coin.yScale = 1.0;
self.coin.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:CGSizeMake(40, 40)];
}
self.coin = nil;
return;
}
}];
self.coin.xScale = 1.0;
self.coin.yScale = 1.0;
self.coin.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:CGSizeMake(40, 40)];
self.coin = nil;
}
}
– (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end