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/* Copyright (c) 1997-2003 Miller Puckette.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.

iemlib2 written by Thomas Musil (c) IEM KUG Graz Austria 2000 - 2003 */

#ifdef NT
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif

#include "m_pd.h"
#include "iemlib.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>

/* ---------------- modulo-counter. ----------------- */

static t_class *modulo_counter_class;

typedef struct _modulo_counter
{
    t_object x_obj;
    int      x_max;
    int      x_cur;
} t_modulo_counter;

static void modulo_counter_bang(t_modulo_counter *x)
{
    outlet_float(x->x_obj.ob_outlet, x->x_cur++);
    x->x_cur = x->x_cur % x->x_max;
}

static void modulo_counter_float(t_modulo_counter *x, t_float max)
{
    int i = (int)max;

    if(i < 1)
	i = 1;
    if(x->x_cur >= i)
        x->x_cur = i - 1;
    x->x_max = i;
}

static void modulo_counter_ft1(t_modulo_counter *x, t_float set_init)
{
    int i = (int)set_init;

    if(i < 0)
	i = 0;
    if(i >= x->x_max)
        i = x->x_max - 1;
    x->x_cur = i;
}

static void *modulo_counter_new(t_symbol *s, int ac, t_atom *av)
{
    t_modulo_counter *x = (t_modulo_counter *)pd_new(modulo_counter_class);
    int max = 1, cur = 0;

    if((ac > 0) && IS_A_FLOAT(av, 0))
	max = atom_getintarg(0, ac, av);
    if((ac > 1) && IS_A_FLOAT(av, 1))
	cur = atom_getintarg(1, ac, av);
    if(max < 1)
	x->x_max = 1;
    else
	x->x_max = max;
    if(cur < 0)
	cur = 0;
    if(cur >= x->x_max)
        cur = x->x_max - 1;
    x->x_cur = cur;
    outlet_new(&x->x_obj, &s_float);
    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
    return (x);
}

void modulo_counter_setup(void)
{
    modulo_counter_class = class_new(gensym("modulo_counter"),
	 (t_newmethod)modulo_counter_new, 0,
	 sizeof(t_modulo_counter), 0, A_GIMME, 0);
    class_addbang(modulo_counter_class, (t_method)modulo_counter_bang);
    class_addfloat(modulo_counter_class, (t_method)modulo_counter_float);
    class_addmethod(modulo_counter_class, (t_method)modulo_counter_ft1, gensym("ft1"), A_FLOAT, 0);
    class_sethelpsymbol(modulo_counter_class, gensym("iemhelp/help-modulo_counter"));
}