Timer for Python game

Question

I m trying to create a simple game where the point is to collect as many blocks as you can in a certain amount of time  say 10 seconds  How can I get a timer to begin ticking at the start of the program and when it reaches 10 seconds  do something  in this case  exit a loop

User · Answer

In this example the loop is run every second for ten seconds   import datetime  time then   datetime datetime now     datetime timedelta seconds 10  while then  gt  datetime datetime now        print  sleeping      time sleep 1

User · Answer

As a learning exercise for myself  I created a class to be able to create several stopwatch timer instances that you might find useful  I m sure there are better simpler versions around in the time modules or similar   import time as tm class Watch      count   0     description    Stopwatch class object  default description       author    Author not yet set      name    not defined      instances          def   init   self name  not defined            self name   name         self elapsed   0          self mode    init          self starttime   0          self created   tm strftime   Y- m- d  H  M  S   tm gmtime            Watch count    1      def   call   self           if self mode     running               return tm time   - self starttime         elif self mode     stopped               return self elapsed         else              return 0       def display self           if self mode     running               self elapsed   tm time   - self starttime         elif self mode     init               self elapsed   0          elif self mode     stopped               pass         else              pass         print  Name           self name         print  Address        self         print  Created        self created         print  Start-time     self starttime         print  Mode           self mode         print  Elapsed        self elapsed         print  Description    self description         print  Author         self author      def start self           if self mode     running               self starttime   tm time               self elapsed   tm time   - self starttime         elif self mode     init               self starttime   tm time               self mode    running              self elapsed   0          elif self mode     stopped               self mode    running               self elapsed   self elapsed   tm time   - self starttime             self starttime   tm time   - self elapsed         else              pass         return      def stop self           if self mode     running               self mode    stopped              self elapsed   tm time   - self starttime         elif self mode     init               self mode    stopped              self elapsed   0          elif self mode     stopped               pass         else              pass         return self elapsed      def lap self           if self mode     running               self elapsed   tm time   - self starttime         elif self mode     init               self elapsed   0          elif self mode     stopped               pass         else              pass         return self elapsed      def reset self           self starttime 0          self elapsed 0          self mode  init          return self elapsed  def WatchList        return  i for i j in zip globals   keys   globals   values    if    main   Watch instance  in str j

User · Answer

Using time time   datetime datetime now   will break if the system time is changed  the user changes the time  it is corrected by a timesyncing services such as NTP or switching from to dayligt saving time     time monotonic   or time perf counter   seems to be the correct way to go  however they are only available from python 3 3  Another possibility is using threading Timer  Whether or not this is more reliable than time time   and friends depends on the internal implementation  Also note that creating a new thread is not completely free in terms of system resources  so this might be a bad choice in cases where a lot of timers has to be run in parallel

User · Answer

For a StopWatch helper class  here is my solution which gives you precision on output and also access to the raw start time   class StopWatch      def   init   self           self start       def start self           self  startTime   time time       def getStartTime self           return self  startTime     def elapsed self  prec 3           prec   3 if prec is None or not isinstance prec   int  long   else prec         diff  time time   - self  startTime         return round diff  prec  def round n  p 0       m   10    p     return math floor n   m   0 5    m

User · Answer

New to the python world   I need a System Time independent Stopwatch so I did translate my old C   class into Python   from ctypes wintypes import DWORD import win32api import datetime  class Stopwatch       def   init   self           self Restart        def Restart self           self   ulStartTicks   DWORD win32api GetTickCount    value      def ElapsedMilliSecs self           return DWORD DWORD win32api GetTickCount    value-DWORD self   ulStartTicks  value  value      def ElapsedTime self           return datetime timedelta milliseconds self ElapsedMilliSecs      This has no 49 days run over issue due to DWORD math but NOTICE that GetTickCount has about 15 milliseconds granularity so do not use this class if your need 1-100 milliseconds elapsed time ranges   Any improvement or feedback is welcome

User · Answer

Asks you when to stop  seconds  Adds  0  at starting  1-9   import time import sys  stop   int input   gt      second   0 print   gt  Stopwatch Started     while stop  gt  second      if second  lt  9          second   second   1         time sleep 1          sys stdout write   r gt       0    str second       else          second    1         time sleep 1          sys stdout write   r      gt      str second    print   n gt  Stopwatch Stopped

User · Answer

This is the Shortest Way I know of doing it   def stopWatch            import time         a   0         hours   0         while a  lt  1              for minutes in range 0  60                   for seconds in range 0  60                       time sleep 1                      print hours      minutes      seconds          hours   hours   1

User · Answer

import time  now   time time   future   now   10 while time time    lt  future        do stuff     pass   Alternatively  if you ve already got your loop   while True      if time time    gt  future          break       do other stuff   This method works well with pygame  since it pretty much requires you to have a big main loop

User · Answer

I use this function in my python programs  The input for the function is as example      value   time time    def stopWatch value          From seconds to Days Hours Minutes Seconds         valueD      value 365  24  60      Days   int  valueD       valueH    valueD-Days  365     Hours   int valueH       valueM    valueH - Hours  24     Minutes   int valueM       valueS    valueM - Minutes  60     Seconds   int valueS        print Days     Hours     Minutes     Seconds     start   time time     What in other posts is described is     your code HERE     end   time time            stopWatch end-start   Use then my code

User · Answer

The threading Timer object  documentation  can count the ten seconds  then get it to set an Event flag indicating that the loop should exit   The documentation indicates that the timing might not be exact - you d have to test whether it s accurate enough for your game

[python] Timer for Python game

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