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Question about your timer routine

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• mickey96 at 2009-06-06 18:11
  Hi Ken,
  
  I just wanted to know, when you initalize your timer routine, does to delay(), function work after that? Look the DSP needs about 100 miliseconds to reset itself.
• Awesoken at 2009-06-07 03:08

  Re: Question about your timer routine

  I never used the delay() function in DOS programming, so I'm not sure. If the C library function uses IRQ0 for timing, then I would expect it to finish sooner than desired. Typically, I would set the timer to interrupt at a rate of 120Hz or 240Hz.
• mickey96 at 2009-06-13 22:16
  So, how do you make delay like the delay() function?
• Awesoken at 2009-06-14 01:50
  I use the counter from my timer interrupt handler. For example:
  

  
  //volatile long totalclock; //<-- incremented in timer handler at a rate of TIMERINTSPERSECOND Hertz
  
  void bdelay (long time_ms)
  {
     long waitlcock;
     waitclock = totalclock + (time_ms*TIMERINTSPERSECOND)/1000;
     while (totalclock < waitclock);
  }

• mickey96 at 2009-06-21 20:21
  Another thing Ken, is the totalclock ideal for timing? Like you have a title screen that lasts for 15 seconds or so.
• Awesoken at 2009-06-21 23:16
  y
• mickey96 at 2009-07-11 18:29
  All right, I wanted to know how to use it, say a weapon that goes up or down, I want to time it using totalclock, so that it is timed like other Build Engine games. I never tried to do this, so can you write exactly how to do it?
• Awesoken at 2009-07-11 23:35
  The solution to this does not require specific knowledge of the Build Engine. Go find a math tutorial and do it yourself.