力を溜めて薪割りをするiPhoneゲームアプリのサンプルです。
画面の右下をタップしたままにすると、薪割りメーターが上がります。
ちょうどいいところで止めて、斧を振り下ろして薪を真っ二つに！
ポイント
pushと書いてある場所を押している長さと、
メーターのレベルを0.2秒で１レベルアップとしました。
touchesBeganとtouchesEndedでON/OFFを行い、
NSTimerの中で増減をさせています。
サンプルコード
#import “ViewController.h”
#import <QuartzCore/QuartzCore.h>
@interface ViewController (){
UIView *stump;
UIView *hatchet;
NSTimer *timer;
UILabel *btn;
UIView *wood;
int powerlevel;
}
@end
@implementation ViewController
– (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
[self createStump];
[self createHatchet];
[self createFireWood];
[self createUI];
[self startTimer];
}
– (void)createStump
{
UIView *green = [[UIView alloc] initWithFrame:CGRectMake(0, 300, 320, 200)];
green.backgroundColor = [UIColor greenColor];
[self.view addSubview:green];
stump = [[UIView alloc] initWithFrame:CGRectMake(50, 250, 100, 50)];
stump.backgroundColor = [UIColor brownColor];
// wood brown rgb 102, 51, 0
stump.layer.borderColor = [UIColor colorWithRed:102.0/255.0 green:51.0/255.0 blue:0 alpha:1.0].CGColor;
stump.layer.borderWidth = 4;
[self.view addSubview:stump];
}
– (void)createFireWood
{
wood = [[UIView alloc] initWithFrame:CGRectMake(80, 170, 30, 80)];
wood.backgroundColor = [UIColor colorWithRed:102.0/255.0 green:51.0/255.0 blue:0 alpha:1.0];
[self.view addSubview:wood];
}
– (void)createHatchet
{
hatchet = [[UIView alloc] initWithFrame:CGRectMake(80, 140, 150, 20)];
hatchet.backgroundColor = [UIColor brownColor];
[self.view addSubview:hatchet];
UIView *bladeA = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 50, 40)];
bladeA.backgroundColor = [UIColor darkGrayColor];
[hatchet addSubview:bladeA];
UIView *bladeB = [[UIView alloc] initWithFrame:CGRectMake(0, 40, 50, 10)];
bladeB.backgroundColor = [UIColor grayColor];
[hatchet addSubview:bladeB];
}
– (void)createUI
{
btn = [[UILabel alloc] initWithFrame:CGRectMake(220, 400, 100, 50)];
btn.text = @”push”;
btn.font = [UIFont fontWithName:@”MarkerFelt-Wide” size:40];
btn.textColor = [UIColor whiteColor];
btn.textAlignment = 1;
btn.backgroundColor = [UIColor colorWithWhite:1.0 alpha:0.6];
btn.layer.cornerRadius = 5.0;
[self.view addSubview:btn];
for (int i=0; i<10; i++) {
UIView *meter = [[UIView alloc] initWithFrame:CGRectMake(i * 20 + 10, 10 * (10-i) + 350, 10, 10 * i)];
meter.backgroundColor = [UIColor whiteColor];
meter.tag = i + 1;
[self.view addSubview:meter];
}
}
– (void)startTimer
{
timer = [NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(tick:) userInfo:nil repeats:YES];
}
– (void)tick:(NSTimer *)sender {
if (powerlevel > 0) {
powerlevel = powerlevel % 10 + 1;
for (UIView *meter in self.view.subviews) {
if (meter.tag > 0) {
if(meter.tag <= powerlevel)
{
meter.backgroundColor = [UIColor orangeColor];
}
else
{
meter.backgroundColor = [UIColor whiteColor];
}
}
}
}
}
– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
CGPoint p = [[touches anyObject] locationInView:self.view];
if (CGRectContainsPoint(btn.frame, p)) {
powerlevel = 1;
}
}
– (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
float duration = 1.0 / (float)powerlevel;
[UIView animateWithDuration:1.0 animations:^{
hatchet.transform = [self hachetangle:M_PI * (float)powerlevel * 0.05];
} completion:^(BOOL finished) {
[UIView animateWithDuration:duration animations:^{
hatchet.transform = [self hachetangle: –M_PI * 0.02];
} completion:^(BOOL finished) {
[self chopWood];
[self performSelector:@selector(restart) withObject:nil afterDelay:1.0];
}];
}];
powerlevel = 0;
}
– (CGAffineTransform)hachetangle:(float)angle
{
CGAffineTransform t = CGAffineTransformMakeTranslation(100, 10);
t = CGAffineTransformRotate(t, angle);
t = CGAffineTransformTranslate(t, –100, –10);
return t;
}
– (void)chopWood
{
UIView *wood2 = [[UIView alloc] initWithFrame:wood.frame];
wood2.backgroundColor = wood.backgroundColor;
[self.view addSubview:wood2];
wood.bounds = CGRectMake(0, 0, 20, 80);
[UIView animateWithDuration:0.5 animations:^{
wood.center = CGPointMake(400, 50);
wood2.center = CGPointMake(-200, 50);
} completion:^(BOOL finished) {
[wood2 removeFromSuperview];
[wood removeFromSuperview];
}];
}
– (void)restart
{
[self createFireWood];
wood.transform = CGAffineTransformMakeTranslation(0, –200);
[UIView animateWithDuration:0.5 animations:^{
wood.transform = CGAffineTransformIdentity;
}];
}
– (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end