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/* Copyright (c) 1997-1999 Miller Puckette.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* clock objects */
#include "m_pd.h"
#include <stdio.h>
static t_class *metro_class;
typedef struct _metro
{
t_object x_obj;
t_clock *x_clock;
double x_deltime;
int x_hit;
} t_metro;
static void metro_tick(t_metro *x)
{
x->x_hit = 0;
outlet_bang(x->x_obj.ob_outlet);
if (!x->x_hit) clock_delay(x->x_clock, x->x_deltime);
}
static void metro_float(t_metro *x, t_float f)
{
if (f != 0) metro_tick(x);
else clock_unset(x->x_clock);
x->x_hit = 1;
}
static void metro_bang(t_metro *x)
{
metro_float(x, 1);
}
static void metro_stop(t_metro *x)
{
metro_float(x, 0);
}
static void metro_ft1(t_metro *x, t_floatarg g)
{
if (g < 1) g = 1;
x->x_deltime = g;
}
static void metro_free(t_metro *x)
{
clock_free(x->x_clock);
}
static void *metro_new(t_floatarg f)
{
t_metro *x = (t_metro *)pd_new(metro_class);
metro_ft1(x, f);
x->x_hit = 0;
x->x_clock = clock_new(x, (t_method)metro_tick);
outlet_new(&x->x_obj, gensym("bang"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("ft1"));
return (x);
}
void metro_setup(void)
{
metro_class = class_new(gensym("metro"), (t_newmethod)metro_new,
(t_method)metro_free, sizeof(t_metro), 0, A_DEFFLOAT, 0);
class_addbang(metro_class, metro_bang);
class_addmethod(metro_class, (t_method)metro_stop, gensym("stop"), 0);
class_addmethod(metro_class, (t_method)metro_ft1, gensym("ft1"),
A_FLOAT, 0);
class_addfloat(metro_class, (t_method)metro_float);
}
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