こんにちは、私はあなたが青いボールであり、赤いボールに触れさせずに移動する必要があるアプリを作成しています。速度が毎秒増加するようにするにはどうすればよいか考えていました。次のようなものがあります。
- (void)viewDidLoad {
[super viewDidLoad];
//(X Speed, Y Speed)
pos = CGPointMake(13.0,8.0);
pos2 = CGPointMake(10.0,9.0);
}
- (IBAction)restart:(id)sender {
[restartbutton setHidden:YES];
[menubutton setHidden:YES];
randomMain = [NSTimer scheduledTimerWithTimeInterval:(0.03) target:self selector:@selector(onTimer) userInfo:nil repeats:YES];
}
- (IBAction)start:(id)sender {
[startbutton setHidden:YES];
[restartbutton setHidden:YES];
[menubutton setHidden:YES];
randomMain = [NSTimer scheduledTimerWithTimeInterval:(0.03) target:self selector:@selector(onTimer) userInfo:nil repeats:YES];
}
- (IBAction)menu:(id)sender {
[self.navigationController popViewControllerAnimated:YES];
}
- (void)onTimer {
[self checkCollision];
enemy.center = CGPointMake(enemy.center.x+pos.x, enemy.center.y+pos.y);
enemy2.center = CGPointMake(enemy2.center.x+pos2.x, enemy2.center.y+pos2.y);
if (enemy.center.x > 320 || enemy.center.x < 0)
pos.x = -pos.x;
if (enemy.center.y > 480 || enemy.center.y < 0)
pos.y = -pos.y;
if (enemy2.center.x > 320 || enemy2.center.x < 0)
pos2.x = -pos2.x;
if (enemy2.center.y > 480 || enemy2.center.y < 0)
pos2.y = -pos2.y;
}
- (void)checkCollision {
if (CGRectIntersectsRect(player.frame, enemy.frame)) {
[randomMain invalidate];
[startbutton setHidden:YES];
[restartbutton setHidden:NO];
[menubutton setHidden:NO];
CGRect frame = [player frame];
frame.origin.x = 135.0f;
frame.origin.y = 205.0f;
[player setFrame:frame];
CGRect frame2 = [enemy frame];
frame2.origin.x = 135.0f;
frame2.origin.y = 20.0f;
[enemy setFrame:frame2];
CGRect frame3 = [enemy2 frame];
frame3.origin.x = 135.0f;
frame3.origin.y = 390.0f;
[enemy2 setFrame:frame3];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"You Lost!"
message:[NSString stringWithFormat:@"Better Luck Next Time"]
delegate:nil
cancelButtonTitle:@"Cancel"
otherButtonTitles:nil];
[alert show];
}
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *myTouch = [[event allTouches] anyObject];
player.center = [myTouch locationInView:self.view];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
@end