はしりまわる、黄色い四角を
グリーンレーザーでうちまくれ！
という感じの子供向けiPhoneゲームのサンプルコードを書いてみた。
ポイント
ぽわーっとネオンというか、光った感じのUIViewは、
背景を黒にして、layer.shadowXXXXを設定することでそういう雰囲気にしてます。
格子の交差点に20×20のTapGestureを仕込んだUIViewを配置
たたくと、そこに向けて四方からレーザが出るようにしました。
環境
今回つくったiPhoneアプリサンプルは、
XcodeのiOS6 iPhone Simulatorで動かしています。
サンプルコード
#import “ViewController.h”
#import <QuartzCore/QuartzCore.h>
@interface ViewController () {
UIView *mob;
NSMutableArray *greenBar;
BOOL hit;
}
@end
@implementation ViewController
– (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor blackColor];
[self createLines];
[self createButtons];
[self createMob];
}
– (void)createLines
{
for (int i=0; i<40; i++) {
float x = (i % 5) * 50 + 50;
float y = (i / 5) * 50 + 50;
UIView *l = [self neonLine];
l.center = CGPointMake(x, y);
UIView *l90 = [self neonLine];
l90.center = CGPointMake(x, y);
l90.transform = CGAffineTransformMakeRotation(M_PI/2.0);
}
}
– (UIView*)neonLine
{
UIView *line = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 50, 3)];
line.backgroundColor = [UIColor colorWithRed:0.5 green:0.5 blue:1.0 alpha:1];
line.layer.shadowColor = [UIColor colorWithRed:0.5 green:0.5 blue:1.0 alpha:1].CGColor;
line.layer.shadowOffset = CGSizeMake(0, 0);
line.layer.shadowRadius = 5.0;
line.layer.shadowOpacity = 1.0;
[self.view addSubview:line];
return line;
}
– (void)createButtons
{
for (int i=0; i<40; i++) {
float x = (i % 5) * 50 + 50;
float y = (i / 5) * 50 + 50;
UIView *btn = [self neonButton];
btn.center = CGPointMake(x, y);
}
}
– (UIView*)neonButton
{
UIView *btn = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
btn.layer.cornerRadius = 5;
btn.backgroundColor = [UIColor colorWithRed:0.5 green:0.5 blue:1.0 alpha:1];
btn.layer.shadowColor = [UIColor colorWithRed:0.5 green:0.5 blue:1.0 alpha:1].CGColor;
btn.layer.shadowOffset = CGSizeMake(0, 0);
btn.layer.shadowRadius = 5.0;
btn.layer.shadowOpacity = 1.0;
btn.alpha = 0.8;
[self.view addSubview:btn];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];
[btn addGestureRecognizer:tap];
return btn;
}
– (void)tap:(UITapGestureRecognizer*)gr
{
CGPoint p = gr.view.center;
CGPoint start[] = {CGPointMake(300, 0), CGPointMake(-300, 0), CGPointMake(0, 300), CGPointMake(0, –300)};
greenBar = [[NSMutableArray alloc] init];
for (int i=0; i<4; i++) {
UIView *a = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 60, 5)];
a.backgroundColor = [UIColor greenColor];
a.layer.shadowColor = [UIColor greenColor].CGColor;
a.layer.shadowOffset = CGSizeMake(0, 0);
a.layer.shadowRadius = 8.0;
a.layer.shadowOpacity = 1.0;
a.alpha = 0.4;
a.center = p;
float x = start[i].x;
float y = start[i].y;
if (i>1) {
a.transform = CGAffineTransformRotate(a.transform, M_PI/2.0);
}
a.center = CGPointMake(a.center.x + x, a.center.y + y);
[self.view addSubview:a];
[greenBar addObject:a];
[UIView animateWithDuration:0.5 animations:^{
a.center = CGPointMake(a.center.x – x, a.center.y – y);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.2 animations:^{
a.transform = CGAffineTransformMakeScale(0, 0);
} completion:^(BOOL finished) {
[a removeFromSuperview];
a.center = CGPointMake(-100, –100);
}];
}];
}
}
– (void)createMob
{
mob = [[UIView alloc] initWithFrame:CGRectMake(50, 50, 50, 50)];
mob.backgroundColor = [UIColor yellowColor];
mob.layer.cornerRadius = 10;
mob.userInteractionEnabled = NO;
UIView *eyeR = [[UIView alloc] initWithFrame:CGRectMake(5, 25, 10, 10)];
eyeR.backgroundColor = [UIColor blueColor];
eyeR.layer.cornerRadius = 5;
[mob addSubview:eyeR];
UIView *eyeL = [[UIView alloc] initWithFrame:CGRectMake(35, 25, 10, 10)];
eyeL.backgroundColor = [UIColor blueColor];
eyeL.layer.cornerRadius = 5;
[mob addSubview:eyeL];
UIView *mouth = [[UIView alloc] initWithFrame:CGRectMake(10, 40, 30, 3)];
mouth.backgroundColor = [UIColor redColor];
[mob addSubview:mouth];
[self.view addSubview:mob];
[NSTimer scheduledTimerWithTimeInterval:30.0/60.0 target:self selector:@selector(move:) userInfo:nil repeats:YES];
[NSTimer scheduledTimerWithTimeInterval:2.0/60.0 target:self selector:@selector(hitcheck:) userInfo:nil repeats:YES];
}
– (void)move:(NSTimer*)sender
{
int dx = arc4random() % 100 – 49;
int dy = arc4random() % 100 – 49;
if (CGRectContainsPoint(CGRectMake(40, 40, 220, 360), CGPointMake(mob.center.x + dx, mob.center.y + dy))) {
[UIView animateWithDuration:30.0/60.0 animations:^{
mob.center = CGPointMake(mob.center.x + dx, mob.center.y + dy);
}];
}
}
– (void)hitcheck:(NSTimer*)sender
{
for (UIView *gLine in greenBar) {
if (!hit && CGRectIntersectsRect(mob.frame, [gLine.layer.presentationLayer frame])) {
hit = YES;
[UIView animateWithDuration:0.5 animations:^{
mob.transform = CGAffineTransformRotate(mob.transform, M_PI/2.0);
} completion:^(BOOL finished) {
hit = NO;
}];
}
}
}
– (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end