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GTK and Windows appear to handle timers very differently:

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specifically, the elapsed time between calls varies much more with
GTK than it does under Windows. Therefore, I now take my own time
readings on every timer call, and this appears to have made the
animations run at closer to the same speed between platforms. Having
done that, I decided some of them were at the _wrong_ speed, and
fiddled with each game's timings as well.

[originally from svn r4189]
This commit is contained in:
Simon Tatham
2004-05-03 09:43:08 +00:00
parent 2d1d54b96b
commit ccbf3ca6f1
6 changed files with 33 additions and 13 deletions
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18
gtk.c
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@ -9,6 +9,8 @@
#include <stdarg.h>
#include <string.h>
#include <sys/time.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
@ -63,6 +65,7 @@ struct frontend {
GdkGC *gc;
int bbox_l, bbox_r, bbox_u, bbox_d;
int timer_active, timer_id;
struct timeval last_time;
struct font *fonts;
int nfonts, fontsize;
config_item *cfg;
@ -354,8 +357,15 @@ static gint timer_func(gpointer data)
{
frontend *fe = (frontend *)data;
if (fe->timer_active)
midend_timer(fe->me, 0.02); /* may clear timer_active */
if (fe->timer_active) {
struct timeval now;
float elapsed;
gettimeofday(&now, NULL);
elapsed = ((now.tv_usec - fe->last_time.tv_usec) * 0.000001F +
(now.tv_sec - fe->last_time.tv_sec));
midend_timer(fe->me, elapsed); /* may clear timer_active */
fe->last_time = now;
}
return fe->timer_active;
}
@ -369,8 +379,10 @@ void deactivate_timer(frontend *fe)
void activate_timer(frontend *fe)
{
if (!fe->timer_active)
if (!fe->timer_active) {
fe->timer_id = gtk_timeout_add(20, timer_func, fe);
gettimeofday(&fe->last_time, NULL);
}
fe->timer_active = TRUE;
}