When I hold down on a button my image will move to a direction.
The game objective is that they are going to move image to hit another image, and to do that I'm using an NSTimer.
Then they also have another NSTimer because they only have 15 seconds on them to hit the other image. If they don't the game will [self gameover] but, the NSTimer that counts the 15 seconds is started and I move the image the image moves a bit and then it goes back to center again.
When I delete the countdown timer, the image does not go back to center after I stop pressing the button but it stops on its current position.
And that's what I want it to do while I'm using the countdown timer as well.
Code:
-(void)goLeft
{
ball.center = CGPointMake(ball.center.x -5, ball.center.y);
}
-(IBAction)left
{
goLeft = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:#selector(goLeft) userInfo:nil repeats:YES];
if (goLeft == nil) goLeft = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:#selector(goLeft) userInfo:nil repeats:YES];
}
-(IBAction)stopLeft
{
[goLeft invalidate];
goLeft = nil;
}
//And heres the timer :
-(IBAction)doCountdown: (id)sender;{
if (countdownTimer)
return;
remainingTicks = 25;
[self updateLabel];
countdownTimer = [NSTimer scheduledTimerWithTimeInterval: 1.0 target: self selector: #selector(handleTimerTick) userInfo: nil repeats: YES];
}
-(void)handleTimerTick
{
remainingTicks--;
[self updateLabel];
if (remainingTicks <= 0) {
[countdownTimer invalidate];
countdownTimer = nil;
}
}
-(void)updateLabel
{
theLabel.text = [[NSNumber numberWithUnsignedInt: remainingTicks] stringValue];
}
Related
After the end of our game the NSTimer does not stop.
-(void)StartGame{
Countdown = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:#selector(TimeDecrease) userInfo:nil repeats:YES];
}
-(void)TimeDecrease{
StartTime = StartTime - 1;
Timer.text = [NSString stringWithFormat:#"%d",StartTime];
if(StartTime == 0){
[self EndGame];
}
}
We tried [Countdown release] and disabled ARC but it throws an error.
We are trying to accomplish a timer that resets to 15 at the beginning of every new game.
Try:
[Countdown invalidate];
Countdown = nil;
I have a requirment of 15sec timer in my app in the circular progress bar sort of animation which will contain label in the center of seconds remain
Following code gives the labelprogress from 0.0 to 1.0f but I want to map it to 15 seconds countdown with the smooth animation also if there is timer extender than it should get the time added with the smooth animation
ex: Firstly I need to start from 15 seconds and if user clicks on the timeextender powerup and current time is the 10sec then it should be 25 sec and acoordingly the progressbar percentage should work.
So what logic I need to map to get the above requirement done
- (void)progressChange
{
// Labeled progress views
NSArray *labeledProgressViews = #[//self.labeledProgressView,
self.labeledLargeProgressView];
for (DALabeledCircularProgressView *labeledProgressView in labeledProgressViews) {
CGFloat progress = ![self.timer isValid] ? self.stepper.value / 10.0f : labeledProgressView.progress + 0.01f;
[labeledProgressView setProgress:progress animated:YES];
labeledProgressView.progressLabel.text = [NSString stringWithFormat:#"%.2f", labeledProgressView.progress];
}
}
- (void)startAnimation
{
self.timer = [NSTimer scheduledTimerWithTimeInterval:0.03
target:self
selector:#selector(progressChange)
userInfo:nil
repeats:YES];
self.continuousSwitch.on = YES;
}
- (void)stopAnimation
{
[self.timer invalidate];
self.timer = nil;
self.continuousSwitch.on = NO;
}
- (IBAction)TimeExtender:(id)sender
{
if (labeledProgressView.progress >= 1.0f && [self.timer isValid]) {
[labeledProgressView setProgress:0.f animated:YES];
}
}
I solved it by myself here's the code
- (void)progressChange
{
CGFloat progress ;
DALabeledCircularProgressView *labeledProgressView = self.labeledLargeProgressView;
if(labeledProgressView.progress >=1.0f && [self.timer isValid]){
[self stopAnimation];
seconds = 15.0f;
}
else{
progress=labeledProgressView.progress + 0.06666667f;
[labeledProgressView setProgress:progress animated:YES];
seconds --;
labeledProgressView.progressLabel.text = [NSString stringWithFormat:#"%i", seconds];
}
}
- (void)startAnimation
{
self.timer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:#selector(progressChange)
userInfo:nil
repeats:YES];
self.continuousSwitch.on = YES;
}
This question already has answers here:
How can I programmatically pause an NSTimer?
(16 answers)
Closed 9 years ago.
I have a game which uses a timer. I want to make it so the user can select a button and it pauses that timer and when they click that button again, it will unpause that timer. I already have code to the timer, just need some help with the pausing the timer and the dual-action button.
Code to timer:
-(void)timerDelay {
mainInt = 36;
timer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:#selector(countDownDuration)
userInfo:nil
repeats:YES];
}
-(void)countDownDuration {
MainInt -= 1;
seconds.text = [NSString stringWithFormat:#"%i", MainInt];
if (MainInt <= 0) {
[timer invalidate];
[self delay];
}
}
That's very easy.
// Declare the following variables
BOOL ispaused;
NSTimer *timer;
int MainInt;
-(void)countUp {
if (ispaused == NO) {
MainInt +=1;
secondField.stringValue = [NSString stringWithFormat:#"%i",MainInt];
}
}
- (IBAction)start1Clicked:(id)sender {
MainInt=0;
timer=[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:#selector(countUp) userInfo:Nil repeats:YES];
}
- (IBAction)pause1Clicked:(id)sender {
ispaused = YES;
}
- (IBAction)resume1Clicked:(id)sender {
ispaused = NO;
}
There is no pause and resume functionality in NSTimer. You can impliment it like below code.
- (void)startTimer
{
m_pTimerObject = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:#selector(fireTimer:) userInfo:nil repeats:YES];
}
- (void)fireTimer:(NSTimer *)inTimer
{
// Timer is fired.
}
- (void)resumeTimer
{
if(m_pTimerObject)
{
[m_pTimerObject invalidate];
m_pTimerObject = nil;
}
m_pTimerObject = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:#selector(fireTimer:) userInfo:nil repeats:YES];
}
- (void)pauseTimer
{
[m_pTimerObject invalidate];
m_pTimerObject = nil;
}
I have this app which has a timer in it and I want to be able to display a button at random points in that timer. Sort Of like a game setting where you have to get the button to get more time before it disappears. I already have some code , but the problem is that the timer that i already have is being messed up ( i can tell because it is linked to a label. It messed up because it goes down by 2 instead of 1 and this only happens when i have the code to make the button appear and disappear with the timer.
Here is the code to my timer that is being messed up:
-(IBAction)Ready:(id)sender {
[self performSelector:#selector(TimerDelay) withObject:nil afterDelay:1.0];
[self performSelector:#selector(randomTimer) withObject:nil afterDelay:0.5];
}
-(void)TimerDelay {
MainInt = 36;
timer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:#selector(countDownDuration)
userInfo:nil
repeats:YES];
}
Here is the code to the button:
-(IBAction)Ready:(id)sender { //the same ready action as above
[self performSelector:#selector(TimerDelay) withObject:nil afterDelay:1.0];
[self performSelector:#selector(randomTimer) withObject:nil afterDelay:0.5];
}
-(void)TimerDelay {
MainInt = 36;
timer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:#selector(countDownDuration)
userInfo:nil
repeats:YES];
}
- (void)randomTimer {
NSInteger randomTime = arc4random_uniform(0); //Some number between 0 and 9
timer = [NSTimer scheduledTimerWithTimeInterval:randomTime
target:self
selector:#selector(showButton)
userInfo:nil
repeats:NO];
}
- (void)showButton {
if(self.plus5.hidden == YES) {
self.plus5.hidden = NO;
}
else {
self.plus5.hidden = YES;
}
[self TimerDelay]; //Call random timer function again to run this method at a future random time
}
You are calling "randomTimer" and "TimerDelay" (this should be "timerDelay") one after the other and scheduling and REscheduling "timer".
I think you should reconsider your architecture, here...
EDIT: Use just one timer and let it manage your button.
- (void)somewhereInYourCode
{
shouldShowButton = YES;
timer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:#selector(timeFired)
userInfo:nil
repeats:YES];
}
- (void)timeFired
{
// Here your countdown and...
if (shouldShowButton) {
NSInteger randomTimeInt = arc4random_uniform(9); // as suggested by Bergasms
float randomTimeFloat = randomTimeInt;
[self performSelector:#selector(showButton) withObject:nil afterDelay:randomTimeFloat];
shouldShowButton = NO;
}
}
This way your timer won't (probably) mess up.
This:
arc4random_uniform() will return a uniformly distributed random number
less than upper_bound.
is one of your problems.
NSInteger randomTime = arc4random_uniform(0); //Some number between 0 and 9
needs to be
NSInteger randomTime = arc4random_uniform(9); //Some number between 0 and 9
I cannot say for the rest of your code. But the line you have will always return 0, which means the random timer will always execute instantly.
I want to use scheduledTimerWithTimeInterval to do a periodic task for certain amount of time lets say one hour. but How do I implement on my code. Here is my code:
timer = [NSTimer scheduledTimerWithTimeInterval: 0.1
target: self
selector: #selector(doSomething:)
userInfo: nil
repeats: YES];
Lets assume for a minute .
Here is simple scenario ,
int remainingCounts;
NSTimer *timer;
timer = [NSTimer scheduledTimerWithTimeInterval:1 target:(self) selector:#selector(countDown) userInfo:nil repeats:YES];
remainingCounts = 60; // int remainingCounts ;...
Method being called for every sec.
-(void)countDown {
NSLog(#"%d", remainingCounts);
// Do Your stuff......
if (--remainingCounts == 0) {
//[self dismissViewControllerAnimated:YES completion:nil];
[timer invalidate];
}
}