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#import "ViewController.h"
#import "Ball.h"
@interface ViewController ()
@property int score;
@property (strong, nonatomic) NSTimer * timer;
@end
@implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[self.ball addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onTouch:)]];
[self startRandomLocationTimer];
[self startScoreTimer];
}
// creates a new random location to move the ball to.
-(CGPoint)createRandomLocationFor:(CGPoint)currentLocation
{
CGPoint newLocation = currentLocation;
newLocation.y = (float)random() / RAND_MAX * 940 + 32;
newLocation.x = (float)random() / RAND_MAX * 704 + 32;
NSLog(@"moving to %f %f", newLocation.x, newLocation.y);
return newLocation;
}
// moves the ball to a random location
- (void)moveBallToRandomLocation
{
[UIView animateWithDuration:1 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^
{
self.ball.center = [self createRandomLocationFor:self.ball.center];
} completion:^(BOOL b) {
[self startRandomLocationTimer];
}];
}
// increment game score
-(void)incrementScore
{
[self increaseScore:1];
}
// starts a timer that will move the ball to a random location
- (void)startRandomLocationTimer
{
self.timer = [NSTimer scheduledTimerWithTimeInterval:5 target:self selector:@selector(moveBallToRandomLocation) userInfo:nil repeats:NO];
}
// starts a timer to increment the score while the game is running.
- (void)startScoreTimer
{
[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(incrementScore) userInfo:nil repeats:YES];
}
// when the ball is touched
-(void)onTouch:(UIGestureRecognizer *)sender
{
[self moveBallToRandomLocation];
[self stopTimer];
[self increaseScore:2];
}
-(void)increaseScore:(int) amount
{
self.score += amount;
self.scoreLabel.text = [NSString stringWithFormat:@"%d", self.score];
}
-(void)stopTimer
{
[self.timer invalidate];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
@end
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