すうじの６と９は、ひっくり返っているだけなので、どっちがどっちか間違えちゃう。そんな子供に金魚分けゲーム。金魚をタッチして、左右の水槽が６匹、９匹になるように金魚をジャンプさせるiPhoneアプリを作ってみましょう。
動作イメージ
XcodeからiOS6 iPhone Simulatorで動かすとこんな感じになります。
ポイント
金魚をタッチしたら、CAKeyFrameAnimationをつかって、UIBezierPathで書いた放物線上に金魚が飛んでいくようにしました。
サンプルコード
#import “ViewController.h”
#import <QuartzCore/QuartzCore.h>
@interface ViewController () <UIGestureRecognizerDelegate>{
CGPoint gridp[9];
int count;
}
@end
@implementation ViewController
– (void)viewDidLoad
{
[super viewDidLoad];
[self createBackground];
[self showFish];
[self createGridPoint];
}
– (void)createBackground
{
UIImage *img = [UIImage imageNamed:@”aquarium”];
UIImageView *backimg = [[UIImageView alloc] initWithImage:img];
backimg.frame = CGRectMake(0, 0, 568, 320);
[self.view addSubview:backimg];
}
– (void)showFish
{
UIImage *image = [UIImage imageNamed:@”fish”];
for (int i=0; i<15; i++) {
float x = (i % 5) * 35 + 60;
float y = (i / 5) * 32 + 170;
UIImageView *fishiv = [[UIImageView alloc] initWithImage:image];
fishiv.frame = CGRectMake(x, y, 35, 35);
[self.view addSubview:fishiv];
fishiv.userInteractionEnabled = YES;
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(jump:)];
[fishiv addGestureRecognizer:tap];
tap.delegate = self;
}
}
– (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
if ([touch tapCount] == 1) {
return YES;
}
return NO;
}
– (void)jump:(UITapGestureRecognizer*)gr
{
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:gr.view.center];
CGPoint cp = CGPointMake((gridp[count].x + gr.view.center.x) / 2.0, 0);
[path addQuadCurveToPoint:gridp[count] controlPoint:cp];
CAKeyframeAnimation *j = [CAKeyframeAnimation animationWithKeyPath:@”position”];
j.path = path.CGPath;
j.duration = 2;
gr.view.center = gridp[count];
[gr.view.layer addAnimation:j forKey:nil];
count++;
// check clear
if (count == 9) {
UILabel *clearLabel = [[UILabel alloc] initWithFrame:CGRectMake(100, 50, 368, 100)];
clearLabel.text = @”666666666666\nClear\n99999999999″;
clearLabel.numberOfLines = 0;
clearLabel.font = [UIFont boldSystemFontOfSize:20];
clearLabel.backgroundColor = [UIColor colorWithWhite:0 alpha:0.4];
clearLabel.textAlignment = NSTextAlignmentCenter;
clearLabel.textColor = [UIColor whiteColor];
[self.view addSubview:clearLabel];
clearLabel.transform = CGAffineTransformMakeTranslation(0, –500);
[UIView animateWithDuration:0.5 animations:^{
clearLabel.transform = CGAffineTransformIdentity;
} completion:^(BOOL finished) {
//restart
[self performSelector:@selector(restart) withObject:nil afterDelay:3];
}];
}
}
– (void)createGridPoint
{
for (int i=0; i<9; i++) {
float x = (i % 3) * 60 + 350;
float y = (i / 3) * 35 + 200;
gridp[i] = CGPointMake(x, y);
}
}
– (void)restart
{
for (UIView *v in self.view.subviews) {
[v removeFromSuperview];
}
count = 0;
[self createBackground];
[self showFish];
}
– (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end