2 // C Implementation: timer
7 // Author: Tobias Glaesser <tobi.web@gmx.de>, (C) 2004
9 // Copyright: See COPYING file that comes with this distribution
17 unsigned int st_pause_ticks, st_pause_count;
19 unsigned int st_get_ticks(void)
21 if(st_pause_count != 0)
22 return SDL_GetTicks() - st_pause_ticks - SDL_GetTicks() + st_pause_count;
24 return SDL_GetTicks() - st_pause_ticks;
27 void st_pause_ticks_init(void)
33 void st_pause_ticks_start(void)
35 st_pause_count = SDL_GetTicks();
38 void st_pause_ticks_stop(void)
40 st_pause_ticks += SDL_GetTicks() - st_pause_count;
44 void timer_init(timer_type* ptimer, bool st_ticks)
48 ptimer->get_ticks = st_ticks ? st_get_ticks : SDL_GetTicks;
51 void timer_start(timer_type* ptimer, unsigned int period)
53 ptimer->time = ptimer->get_ticks();
54 ptimer->period = period;
57 void timer_stop(timer_type* ptimer)
59 if(ptimer->get_ticks == st_get_ticks)
60 timer_init(ptimer,true);
62 timer_init(ptimer,false);
65 int timer_check(timer_type* ptimer)
67 if((ptimer->time != 0) && (ptimer->time + ptimer->period > ptimer->get_ticks()))
76 int timer_started(timer_type* ptimer)
84 int timer_get_left(timer_type* ptimer)
86 return (ptimer->period - (ptimer->get_ticks() - ptimer->time));
89 int timer_get_gone(timer_type* ptimer)
91 return (ptimer->get_ticks() - ptimer->time);
94 void timer_fwrite(timer_type* ptimer, FILE* fi)
96 unsigned int diff_ticks;
99 diff_ticks = ptimer->get_ticks() - ptimer->time;
103 fwrite(&ptimer->period,sizeof(unsigned int),1,fi);
104 fwrite(&diff_ticks,sizeof(unsigned int),1,fi);
105 if(ptimer->get_ticks == st_get_ticks)
109 fwrite(&tick_mode,sizeof(unsigned int),1,fi);
112 void timer_fread(timer_type* ptimer, FILE* fi)
114 unsigned int diff_ticks;
116 fread(&ptimer->period,sizeof(unsigned int),1,fi);
117 fread(&diff_ticks,sizeof(unsigned int),1,fi);
118 fread(&tick_mode,sizeof(unsigned int),1,fi);
119 if(tick_mode == true)
120 ptimer->get_ticks = st_get_ticks;
122 ptimer->get_ticks = SDL_GetTicks;
124 ptimer->time = ptimer->get_ticks() - diff_ticks;