Panda3D
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timedCycle.h
00001 // Filename: timedCycle.h
00002 // Created by:  jason (01Aug00)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef TIMED_CYCLE_H
00016 #define TIMED_CYCLE_H
00017 //
00018 ////////////////////////////////////////////////////////////////////
00019 // Includes
00020 ////////////////////////////////////////////////////////////////////
00021 #include "pandabase.h"
00022 
00023 #include "clockObject.h"
00024 
00025 class Datagram;
00026 class DatagramIterator;
00027 
00028 ////////////////////////////////////////////////////////////////////
00029 //       Class : TimedCycle
00030 // Description : A class for anything that needs to cycle over
00031 //               some finite list of elements in increments based on
00032 //               time.  All time variables are assumed to be set in
00033 //               seconds.
00034 ////////////////////////////////////////////////////////////////////
00035 
00036 class EXPCL_PANDA_PUTIL TimedCycle
00037 {
00038 public:
00039   INLINE TimedCycle();
00040   INLINE TimedCycle(PN_stdfloat cycle_time, int element_count);
00041 
00042   INLINE void set_element_count(int element_count);
00043   INLINE void set_cycle_time(PN_stdfloat cycle_time);
00044   INLINE int next_element();
00045 
00046 public:
00047   void write_datagram(Datagram &me);
00048   void fillin(DatagramIterator &scan);
00049 
00050 private:
00051   ClockObject* _global_clock;
00052   PN_stdfloat _cycle_time;
00053   PN_stdfloat _inv_cycle_time;
00054   double _next_switch;
00055   int _current_child;
00056   int _element_count;
00057 };
00058 
00059 #include "timedCycle.I"
00060 
00061 #endif
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