The high score in my game is time based and I am having trouble setting comparing it with the current score. This is my code so far which doesn't work:
class GameScene: SKScene, SKPhysicsContactDelegate {
// initialise value for current time
var currentTime = NSDate()
var bestTime = NSDate()
override func didMoveToView(view: SKView) {
super.didMoveToView(view)
// set the current time to 0 seconds
var date0 = NSDate();
let timeInterval = floor(date0 .timeIntervalSinceReferenceDate / 60.0) * 60.0
date0 = NSDate(timeIntervalSinceReferenceDate: timeInterval)
currentTime = date0
// call to start timer
NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "printDuration:", userInfo: NSDate(), repeats: true)
Then
func printDuration(timer: NSTimer) {
if self.view?.paused == false {
guard let userInfo = timer.userInfo else {
return
}
guard let startDate = userInfo as? NSDate else {
return
}
let duration = NSDate().timeIntervalSinceDate(startDate)
currentTime = NSDate(timeIntervalSinceReferenceDate: duration)
currentTimeValueLabel.text = "\(NSString(format:"%3.2f", duration))"
}
}
I want to be able to do something like below where I am able to compare the time in both variables and set the higher one accordingly:
if (currentTime > highScore) {
highScore = currentTime
highScoreLabel.text = "\(NSString(format:"%3.2f", highScore))"
}
You can set startDate = NSDate() in didMoveToView() at the beginning and then compare the two to see if duration is higher by typing
if duration > highScore {
highScore = duration
}
Related
I have a countdown Timer that shows seconds and milliseconds. The user can start/stop recording multiple times until the timer hits zero. The user can also delete a previous recording at which point I have to re-add that deleted time back into the initial 20 secs. There are 2 issues.
The first issue is when the timer is stopped, the remaining time that shows on the timer label doesn't match the time culmination of the recordings. From my understanding this might be a RunLoop issue and I don't think there is anything that I can do about the inaccuracies.
let initialTime = 20.0
var cumulativeTimeForAllAssests = 0.0
for asset in arrOfAssets {
let assetDuration = CMTimeGetSeconds(asset.duration)
print("assetDuration: ", assetDuration)
cumulativeTimeForAllAssests += assetDuration
}
print("\ncumulativeTimeForAllAssests: ", cumulativeTimeForAllAssests)
After starting/stopping 5 times, the remaining time on the timer label says 16.5 but the culmination of the assets time is 4.196666.... The timer label should say 15.8, it's 0.7 milli off. The more I start/stop the recording, the more inaccurate/further off the culmination time - the initial time and the timer label time is.
assetDuration: 0.7666666666666667
assetDuration: 0.9666666666666667
assetDuration: 0.7983333333333333
assetDuration: 0.7333333333333333
assetDuration: 0.9316666666666666
cumulativeTimeForAllAssests: 4.196666666666667
The second issue is because I'm using seconds and milliseconds in my timerLabel, when I add re-add the subtracted time back in via deleteAssetAndUpdateTimer(...), I use the parts of modf() to update the seconds and milliseconds. I couldn't think of another way to update the timer. I know there has to be a more accurate way to do it.
Timer code:
weak var timer: Timer?
var seconds = 20
var milliseconds = 0
let initialTime = 20.0
func startTimer() {
invalidateTimer()
if seconds == Int(initalTime) && milliseconds == 0 {
timerIsRunning()
}
timer = Timer.scheduledTimer(withTimeInterval: 0.1, repeats: true, block: { [weak self] _ in
self?.timerIsRunning()
})
}
func timerIsRunning() {
updateTimerLabel()
if milliseconds == 0 {
seconds -= 1
}
milliseconds -= 1
if milliseconds < 0 {
milliseconds = 9
}
if seconds == 0 && milliseconds == 0 {
invalidateTimer()
updateTimerLabel()
}
}
func invalidateTimer() {
timer?.invalidate()
timer = nil
}
func updateTimerLabel() {
let milisecStr = "\(milliseconds)"
let secondsStr = seconds > 9 ? "\(seconds)" : "0\(seconds)"
timerLabel.text = "\(secondsStr).\(milisecStr)"
}
Delete asset and update timer code:
// the timer is stopped when this is called
func deleteAssetAndUpdateTimer(_ assetToDelete: AVURLAsset) {
var cumulativeTimeForAllAssests = 0.0
for asset in arrOfAssets {
let assetDuration = CMTimeGetSeconds(asset.duration)
cumulativeTimeForAllAssests += assetDuration
}
let timeFromAssetToDelete = CMTimeGetSeconds(assetToDelete.duration)
let remainingTime = self.initialTime - cumulativeTimeForAllAssests
let updatedTime = remainingTime + timeFromAssetToDelete
let mod = modf(updatedTime)
self.seconds = Int(mod.0)
self.milliseconds = Int(mod.1 * 10)
updateTimerLabel()
// remove assetToDelete from array
}
The big issue here was I was using a Timer to countdown which was incorrect. Following #LeoDabus' comments, I instead used CACurrentMediaTime():
let timerLabel = UILabel()
let maxRecordingTime = 30.0
lazy var elapsedTime = maxRecordingTime
var startTime: CFTimeInterval?
var endTime: CFTimeInterval?
weak var timer: Timer?
override func viewDidLoad() {
super.viewDidLoad()
updateTimerLabel(with: Int(maxRecordingTime))
}
#IBAction func recordButtonPressed(_ sender: UIButton) {
if startTime == nil {
startTimer()
} else {
stopTimer(updateElapsed: true)
}
}
func startTimer() {
if elapsedTime == 0 { return }
stopTimer()
startTime = CACurrentMediaTime()
endTime = startTime! + elapsedTime
print("startTime: \(startTime!) | endTime: \(endTime!)")
timer = Timer.scheduledTimer(withTimeInterval: 0.01, repeats: true) { [weak self] _ in
self?.timerIsRunning()
}
}
func timerIsRunning() {
guard let startTime = startTime, let endTime = endTime else { return }
let currentTime = CACurrentMediaTime()
let remainingTime = currentTime - startTime
print("%2d %.3lf", elapsedTime, remainingTime)
if currentTime >= endTime {
print("stopped at - currentTime: \(currentTime) | endTime: \(endTime)")
stopTimer(updateElapsed: true, currentTime: currentTime)
return
}
let countDownTime: Double = elapsedTime - remainingTime
let seconds = Int(countDownTime)
updateTimerLabel(with: seconds)
}
func updateTimerLabel(with seconds: Int) {
let secondsStr = seconds > 9 ? "\(seconds)" : "0\(seconds)"
timerLabel.text = secondsStr
}
func stopTimer(updateElapsed: Bool = false, currentTime: Double? = nil) {
timer?.invalidate()
timer = nil
if updateElapsed {
updateElapsedTime(using: currentTime)
}
startTime = nil
endTime = nil
}
func updateElapsedTime(using currentTime: Double? = nil) {
guard let startTime = startTime else { return }
var timeNow = CACurrentMediaTime()
if let currentTime = currentTime {
timeNow = currentTime
}
var updatedTime = elapsedTime - (timeNow - startTime)
if updatedTime < 0 {
updatedTime = 0
}
elapsedTime = updatedTime
}
func resetElapsedTime() { // This is for a resetButton not shown here
elapsedTime = maxRecordingTime
}
I am quite new to Swift and already learned a lot using the questions here.
In one of my first projects I try to write a soccer playtime timer app. The first timer is counting up after the whistle button is pressed showing the minutes played and the second timer is counting down to zero showing the minutes left to play. This works so far.
Now both timers should stop automatically when the halftime is over, so that I can start a third overtime timer. So far the invalidate statement of the timer is not working - both timers keep running. There seems to be something wrong with my if-statements, but at the moment I have no clue what. So any help would be very appreciated.
var countUpClock: Timer?
var countDownClock: Timer?
private var formatter: DateComponentsFormatter = {
let formatter = DateComponentsFormatter()
formatter.unitsStyle = .positional
formatter.allowedUnits = [.minute, .second]
formatter.zeroFormattingBehavior = .pad
return formatter
}()
func runPlaytimeClocks() {
let startTime = Date()
let countTime = Date() + 2700 //45min of playtime
if startTime <= countTime {
countUpClock = Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { [weak self] _ in
self?.timePlayed.text = self?.formatter.string(from: startTime, to: Date())
}
}
else {
countUpClock?.invalidate()
}
if startTime <= countTime {
countDownClock = Timer.scheduledTimer(withTimeInterval: -1.0, repeats: true) { [weak self] _ in
self?.timetoPlay.text = self?.formatter.string(from: Date(), to: countTime)
}
}
else {
countDownClock?.invalidate()
}
Thank you very much for the replies.
I found exactly what I was looking for here: http://ioscake.com/swift-nstimer-in-background.html
I adapted the solution to my for clocks (CountUpClock, CountDownClock, OvertimeClock, HalftimeClock).
Do you have any suggestions what would be the best solution to start the second halftime of the soccer game?
So far the CountUpClock starts again at 0:00 when I press the whistle button after the halftime break. But it should keep running from minute 45:00 to 90:00 - while the CountDownClock should counting down from 45:00 to 0:00 again.
What would be the best solution for such a behaviour?
import UIKit
import UserNotifications
private let stopTimeKey = "stopTimeKey"
class ViewController: UIViewController {
//Outlets
#IBOutlet weak var timePlayed: UILabel!
#IBOutlet weak var timeToPlay: UILabel!
#IBOutlet weak var overtime: UILabel!
#IBOutlet weak var halftime: UILabel!
#IBOutlet weak var halftimeButton: UIButton!
private var stopTime: Date?
override func viewDidLoad() {
super.viewDidLoad()
registerForLocalNotifications()
stopTime = UserDefaults.standard.object(forKey: stopTimeKey) as? Date
if let time = stopTime {
if time > Date() {
startTimers(time, includeNotification: false)
} else {
notifyTimerCompleted()
}
}
}
private func registerForLocalNotifications() {
if #available(iOS 10, *) {
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound]) { granted, error in
guard granted && error == nil else {
// display error
print("\(String(describing: error))")
return
}
}
} else {
let types: UIUserNotificationType = [.badge, .sound, .alert]
let settings = UIUserNotificationSettings(types: types, categories: nil)
UIApplication.shared.registerUserNotificationSettings(settings)
}
}
//Actions
#IBAction func whistleButtonTapped(_ sender: UIButton) {
overtimeClock?.invalidate()
overtimeClock = nil
halftimeClock?.invalidate()
halftimeClock = nil
overtime.text = "00:00"
halftime.text = "00:00"
halftimeButton.isHidden = true
//add 10 seconds per halftime to try out
let time = Date() + 10
if time > Date() {
startTimers(time)
} else {
timeToPlay.text = "error"
}
}
#IBAction func halftimeButton(_ sender: UIButton) {
halftimeButtoPressed()
}
// Code for different Timers
private var countDownClock: Timer?
private var countUpClock: Timer?
var overtimeClock: Timer?
var halftimeClock: Timer?
private func startTimers(_ stopTime: Date, includeNotification: Bool = true) {
// save `stopTime` in case app is terminated
UserDefaults.standard.set(stopTime, forKey: stopTimeKey)
self.stopTime = stopTime
// start Timer
countDownClock = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: #selector(handleCountDownTimer(_:)), userInfo: nil, repeats: true)
countUpClock = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: #selector(handleCountUpTimer(_:)), userInfo: nil, repeats: true)
guard includeNotification else { return }
// start local notification (so we're notified if timer expires while app is not running)
if #available(iOS 10, *) {
let content = UNMutableNotificationContent()
content.title = "Overtime is starting soon"
content.body = "In 5 seconds the overtime will start"
content.sound = UNNotificationSound.default()
//5 seconds warning before overtime starts
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: stopTime.timeIntervalSinceNow - 5, repeats: false)
let notification = UNNotificationRequest(identifier: "timer", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(notification)
} else {
let notification = UILocalNotification()
//5 seconds warning before overtime starts
notification.fireDate = stopTime - 5
notification.alertBody = "Overtime is starting soon"
UIApplication.shared.scheduleLocalNotification(notification)
}
}
private func stopTimer() {
countDownClock?.invalidate()
countDownClock = nil
countUpClock?.invalidate()
countUpClock = nil
}
private func halftimeButtoPressed() {
overtimeClock?.invalidate()
overtimeClock = nil
startHalftimeClock()
halftimeButton.isHidden = true
}
private let dateComponentsFormatter: DateComponentsFormatter = {
let _formatter = DateComponentsFormatter()
_formatter.allowedUnits = [.minute, .second]
_formatter.unitsStyle = .positional
_formatter.zeroFormattingBehavior = .pad
return _formatter
}()
#objc func handleCountDownTimer(_ timer: Timer) {
let now = Date()
if stopTime! > now {
timeToPlay.text = dateComponentsFormatter.string(from: now, to: stopTime!)
} else {
stopTimer()
notifyTimerCompleted()
startOvertimeClock()
halftimeButton.isHidden = false
}
}
#objc func handleCountUpTimer(_ timer: Timer) {
//add 10 seconds per halftime to try out
let now = Date() + 10
if now > stopTime! {
timePlayed.text = dateComponentsFormatter.string(from: stopTime!, to: now)
} else {
stopTimer()
notifyTimerCompleted()
}
}
//Overtime Clock
#objc func startOvertimeClock() {
let startOvertime = Date()
overtimeClock = Timer.scheduledTimer(withTimeInterval: 0.1, repeats: true) { [weak self] _ in
self?.overtime.text = self?.dateComponentsFormatter.string(from: startOvertime, to: Date())
}
}
//Halftime Clock
#objc func startHalftimeClock() {
let startHalftime = Date()
halftimeClock = Timer.scheduledTimer(withTimeInterval: 0.1, repeats: true) { [weak self] _ in
self?.halftime.text = self?.dateComponentsFormatter.string(from: startHalftime, to: Date())
}
}
private func notifyTimerCompleted() {
timeToPlay.text = "End"
timePlayed.text = "End"
}
}
I just made a stopwatch with a tutorial but what I would like to do is to update my 00:00 label as 1 second increasing such as 00:01, 00:02: 00:03 and to do the same for minutes. Is there anyway of doing that? Thanks in advance!
Then you have to get the date which will start the counting from which is the current date when a particular event occurs, let's say we will start the timer when the view appears, so implement viewWillAppear as follows:
var currentDate = NSDate()
override func viewWillAppear(animated: Bool) {
currentDate = NSDate()
var timer: NSTimer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: "updateLabel", userInfo: nil, repeats: true)
timer.fire()
}
and implement the updateLabel function:
func updateLabel() {
dispatch_async(dispatch_get_main_queue(), { () -> Void in
var elapsedSeconds: NSTimeInterval = -self.currentDate.timeIntervalSinceNow
let minutes: Int = Int(elapsedSeconds)/60
let seconds: Int = Int(elapsedSeconds) - (minutes*60)
self.timeLabel.text = String(format: "%02d:%02d", minutes, seconds)
})
}
When formatting time elapsed, NSDateComponentsFormatter is another option:
var start: CFAbsoluteTime!
override func viewDidLoad() {
super.viewDidLoad()
start = CFAbsoluteTimeGetCurrent()
NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: "handleTimer:", userInfo: nil, repeats: true)
}
lazy var formatter: NSDateComponentsFormatter = {
let _formatter = NSDateComponentsFormatter()
_formatter.allowedUnits = .CalendarUnitMinute | .CalendarUnitSecond
_formatter.zeroFormattingBehavior = .Pad
return _formatter
}()
func handleTimer(timer: NSTimer) {
let elapsed = CFAbsoluteTimeGetCurrent() - start
label.text = formatter.stringFromTimeInterval(elapsed)
}
Admittedly, that will give you the time elapsed in 0:00 format, not 00:00 format.
This is Objective-C, but you'll get the idea:
-(void) updateTotalTime
{
int forHours = timeInSeconds / 3600,
remainder = timeInSeconds % 3600,
forMinutes = remainder / 60,
forSeconds = remainder % 60;
[elapsedTime setString:[NSString stringWithFormat:NSLocalizedString(#"elapsedTime", nil)
,forHours
,forMinutes
,forSeconds]];
}
and in my Localizable.strings:
"elapsedTime" = "Time: %02d:%02d:%02d";
I have a function that gives me a time when the app is opened but I don't want it to be static I want it to be dynamic, updating every second. I thought of it being in a loop, but I don't know how to go about doing it. Doing a loop could work but if you have a better way of doing it please answer. Here is my function:
func timeNowString() -> NSString {
let date = NSDate()
var outputFormat = NSDateFormatter()
outputFormat.locale = NSLocale(localeIdentifier:"en_US")
outputFormat.dateFormat = "HH:mm:ss"
let timeString = outputFormat.stringFromDate(date)
return timeString;
}
Question: How do I make this function dynamic? So it goes and updates every second instead of it being a static label.
If you have any questions please comment down below.
Try this. You'll need to add a label and a button and hook them up to the textLabel and start IBAction. You can modify this to add hours (just minutes/seconds here) and add a timer.invalidate() where you need it.
import UIKit
class ViewController: UIViewController {
#IBOutlet var timeLabel: UILabel!
#IBAction func start(sender: AnyObject) {
var timer = NSTimer()
if !timer.valid {
let selector : Selector = "countTime"
timer = NSTimer.scheduledTimerWithTimeInterval(0.01, target:self, selector: selector, userInfo: nil, repeats: true)
startTime = NSDate.timeIntervalSinceReferenceDate()
}
let timeNow = timeNowString() as String
for item in timeNow {
time = timeNow.componentsSeparatedByString(":")
}
}
var time = [String]()
var startTime = NSTimeInterval()
override func viewDidLoad() {
super.viewDidLoad()
}
func countTime() {
var currentTime = NSDate.timeIntervalSinceReferenceDate()
var elapsedTime: NSTimeInterval = currentTime - startTime
var adjustedTime = Int(elapsedTime) + 3600*time[0].toInt()! + 60*time[1].toInt()! + time[0].toInt()!
var hours = Int(Double(adjustedTime)/3600.0)
let minutes = Int(Double(adjustedTime - hours*3600)/60.0)
let seconds = adjustedTime - hours*3600 - minutes*60
let startHours = hours > 9 ? String(hours):"0" + String(hours)
let startMinutes = minutes > 9 ? String(minutes):"0" + String(minutes)
let startSeconds = seconds > 9 ? String(seconds):"0" + String(seconds)
timeLabel.text = "\(startHours):\(startMinutes):\(startSeconds)"
}
func timeNowString() -> NSString {
let date = NSDate()
var outputFormat = NSDateFormatter()
outputFormat.locale = NSLocale(localeIdentifier:"en_US")
outputFormat.dateFormat = "HH:mm:ss"
let timeString = outputFormat.stringFromDate(date)
return timeString;
}
}
Is it possible get playing time and total play time in AVPlayer? If yes, how can I do this?
You can access currently played item by using currentItem property:
AVPlayerItem *currentItem = yourAVPlayer.currentItem;
Then you can easily get the requested time values
CMTime duration = currentItem.duration; //total time
CMTime currentTime = currentItem.currentTime; //playing time
Swift 5:
if let currentItem = player.currentItem {
let duration = CMTimeGetSeconds(currentItem.duration)
let currentTime = CMTimeGetSeconds(currentItem.currentTime())
print("Duration: \(duration) s")
print("Current time: \(currentTime) s")
}
_audioPlayer = [self playerWithAudio:_audio];
_observer =
[_audioPlayer addPeriodicTimeObserverForInterval:CMTimeMake(1, 2)
queue:dispatch_get_main_queue()
usingBlock:^(CMTime time)
{
_progress = CMTimeGetSeconds(time);
}];
Swift 3
let currentTime:Double = player.currentItem.currentTime().seconds
You can get the seconds of your current time by accessing the seconds property of the currentTime(). This will return a Double that represents the seconds in time. Then you can use this value to construct a readable time to present to your user.
First, include a method to return the time variables for H:mm:ss that you will display to the user:
func getHoursMinutesSecondsFrom(seconds: Double) -> (hours: Int, minutes: Int, seconds: Int) {
let secs = Int(seconds)
let hours = secs / 3600
let minutes = (secs % 3600) / 60
let seconds = (secs % 3600) % 60
return (hours, minutes, seconds)
}
Next, a method that will convert the values you retrieved above into a readable string:
func formatTimeFor(seconds: Double) -> String {
let result = getHoursMinutesSecondsFrom(seconds: seconds)
let hoursString = "\(result.hours)"
var minutesString = "\(result.minutes)"
if minutesString.characters.count == 1 {
minutesString = "0\(result.minutes)"
}
var secondsString = "\(result.seconds)"
if secondsString.characters.count == 1 {
secondsString = "0\(result.seconds)"
}
var time = "\(hoursString):"
if result.hours >= 1 {
time.append("\(minutesString):\(secondsString)")
}
else {
time = "\(minutesString):\(secondsString)"
}
return time
}
Now, update the UI with the previous calculations:
func updateTime() {
// Access current item
if let currentItem = player.currentItem {
// Get the current time in seconds
let playhead = currentItem.currentTime().seconds
let duration = currentItem.duration.seconds
// Format seconds for human readable string
playheadLabel.text = formatTimeFor(seconds: playhead)
durationLabel.text = formatTimeFor(seconds: duration)
}
}
With Swift 4.2, use this;
let currentPlayer = AVPlayer()
if let currentItem = currentPlayer.currentItem {
let duration = currentItem.asset.duration
}
let currentTime = currentPlayer.currentTime()
Swift 4
self.playerItem = AVPlayerItem(url: videoUrl!)
self.player = AVPlayer(playerItem: self.playerItem)
self.player?.addPeriodicTimeObserver(forInterval: CMTimeMakeWithSeconds(1, 1), queue: DispatchQueue.main, using: { (time) in
if self.player!.currentItem?.status == .readyToPlay {
let currentTime = CMTimeGetSeconds(self.player!.currentTime())
let secs = Int(currentTime)
self.timeLabel.text = NSString(format: "%02d:%02d", secs/60, secs%60) as String//"\(secs/60):\(secs%60)"
})
}
AVPlayerItem *currentItem = player.currentItem;
NSTimeInterval currentTime = CMTimeGetSeconds(currentItem.currentTime);
NSLog(#" Capturing Time :%f ",currentTime);
Swift:
let currentItem = yourAVPlayer.currentItem
let duration = currentItem.asset.duration
var currentTime = currentItem.asset.currentTime
Swift 5:
Timer.scheduledTimer seems better than addPeriodicTimeObserver if you want to have a smooth progress bar
static public var currenTime = 0.0
static public var currenTimeString = "00:00"
Timer.scheduledTimer(withTimeInterval: 1/60, repeats: true) { timer in
if self.player!.currentItem?.status == .readyToPlay {
let timeElapsed = CMTimeGetSeconds(self.player!.currentTime())
let secs = Int(timeElapsed)
self.currenTime = timeElapsed
self.currenTimeString = NSString(format: "%02d:%02d", secs/60, secs%60) as String
print("AudioPlayer TIME UPDATE: \(self.currenTime) \(self.currenTimeString)")
}
}
Swift 4.2:
let currentItem = yourAVPlayer.currentItem
let duration = currentItem.asset.duration
let currentTime = currentItem.currentTime()
in swift 5+
You can query the player directly to find the current time of the actively playing AVPlayerItem.
The time is stored in a CMTime Struct for ease of conversion to various scales such as 10th of sec, 100th of a sec etc
In most cases we need to represent times in seconds so the following will show you what you want
let currentTimeInSecs = CMTimeGetSeconds(player.currentTime())