+// $Id$
+//
+// SuperTux
+// Copyright (C) 2005 Matthias Braun <matze@braunis.de>
//
-// C Implementation: timer
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
//
-// Description:
-//
-//
-// Author: Tobias Glaesser <tobi.web@gmx.de>, (C) 2004
-//
-// Copyright: See COPYING file that comes with this distribution
-//
-//
-
-#include "SDL.h"
-#include "defines.h"
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+#include <config.h>
+
+#include <math.h>
#include "timer.h"
-unsigned int st_pause_ticks, st_pause_count;
+float global_time = 0;
-unsigned int st_get_ticks(void)
+Timer::Timer()
+ : period(0), cycle_start(0), cyclic(false)
{
- if(st_pause_count != 0)
- return /*SDL_GetTicks()*/ - st_pause_ticks /*- SDL_GetTicks()*/ + st_pause_count;
- else
- return SDL_GetTicks() - st_pause_ticks;
}
-void st_pause_ticks_init(void)
-{
- st_pause_ticks = 0;
- st_pause_count = 0;
-}
-
-void st_pause_ticks_start(void)
-{
- st_pause_count = SDL_GetTicks();
-}
-
-void st_pause_ticks_stop(void)
-{
-if(st_pause_count == 0)
-return;
-
- st_pause_ticks += SDL_GetTicks() - st_pause_count;
- st_pause_count = 0;
-}
-
-void
-timer_type::init(bool st_ticks)
-{
- period = 0;
- time = 0;
- get_ticks = st_ticks ? st_get_ticks : SDL_GetTicks;
-}
-
-void
-timer_type::start(unsigned int period_)
+Timer::~Timer()
{
- time = get_ticks();
- period = period_;
}
void
-timer_type::stop()
+Timer::start(float period, bool cyclic)
{
- if(get_ticks == st_get_ticks)
- init(true);
- else
- init(false);
+ this->period = period;
+ this->cyclic = cyclic;
+ cycle_start = global_time;
}
-int
-timer_type::check()
+bool
+Timer::check()
{
- if((time != 0) && (time + period > get_ticks()))
- return true;
- else
- {
- time = 0;
- return false;
+ if(period == 0)
+ return false;
+
+ if(global_time - cycle_start >= period) {
+ if(cyclic) {
+ cycle_start = global_time - fmodf(global_time - cycle_start, period);
+ } else {
+ period = 0;
}
-}
-
-int
-timer_type::started()
-{
- if(time != 0)
return true;
- else
- return false;
-}
-
-int timer_get_left(timer_type* ptimer)
-{
- return (ptimer->period - (ptimer->get_ticks() - ptimer->time));
-}
-
-int timer_get_gone(timer_type* ptimer)
-{
- return (ptimer->get_ticks() - ptimer->time);
-}
-
-void timer_fwrite(timer_type* ptimer, FILE* fi)
-{
- unsigned int diff_ticks;
- int tick_mode;
- if(ptimer->time != 0)
- diff_ticks = ptimer->get_ticks() - ptimer->time;
- else
- diff_ticks = 0;
-
- fwrite(&ptimer->period,sizeof(unsigned int),1,fi);
- fwrite(&diff_ticks,sizeof(unsigned int),1,fi);
- if(ptimer->get_ticks == st_get_ticks)
- tick_mode = true;
- else
- tick_mode = false;
- fwrite(&tick_mode,sizeof(unsigned int),1,fi);
-}
-
-void timer_fread(timer_type* ptimer, FILE* fi)
-{
- unsigned int diff_ticks;
- int tick_mode;
- fread(&ptimer->period,sizeof(unsigned int),1,fi);
- fread(&diff_ticks,sizeof(unsigned int),1,fi);
- fread(&tick_mode,sizeof(unsigned int),1,fi);
-
- if (tick_mode)
- ptimer->get_ticks = st_get_ticks;
- else
- ptimer->get_ticks = SDL_GetTicks;
-
- if (diff_ticks != 0)
- ptimer->time = ptimer->get_ticks() - diff_ticks;
- else
- ptimer->time = 0;
+ }
+ return false;
}