diff options
Diffstat (limited to 'countund.c')
| -rw-r--r-- | countund.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/countund.c b/countund.c new file mode 100644 index 0000000..976f79c --- /dev/null +++ b/countund.c @@ -0,0 +1,115 @@ +/* ------------------------ countund~ -------------------------------------- */ +/* */ +/* Count up to a value and then down to zero */ +/* Written by Yves Degoyon (ydegoyon@free.fr). */ +/* */ +/* 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. */ +/* */ +/* See file LICENSE for further informations on licensing terms. */ +/* */ +/* 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. */ +/* */ +/* Based on PureData by Miller Puckette and others. */ +/* */ +/* ---------------------------------------------------------------------------- */ + + + +#include <sys/types.h> +#include <string.h> +#include <stdio.h> +#include <errno.h> +#include <stdlib.h> +#include <fcntl.h> +#include <sys/stat.h> +#ifndef __APPLE__ +#include <malloc.h> +#endif +#include <ctype.h> +#include <unistd.h> +#include <time.h> +#include <sys/time.h> + +#include <m_pd.h> /* standard pd stuff */ + +static char *countund_version = "countund~: count up to a value and then down to zero : author : ydegoyon@free.fr"; + +static t_class *countund_class; + +typedef struct _countund +{ + t_object x_obj; + t_int x_limit; + t_int x_value; + t_int x_up; +} t_countund; + + /* clean up */ +static void countund_free(t_countund *x) +{ +} + +static void *countund_new(t_float flimit) +{ + t_countund *x = (t_countund *)pd_new(countund_class); + outlet_new(&x->x_obj, &s_float); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("limit")); + if ( flimit < 0 ) { + post( "countund~: wrong creation argument" ); + return NULL; + } + x->x_limit = (int) flimit; + x->x_value = 0; + x->x_up = 1; + return(x); +} + +static void *countund_limit(t_countund* x, t_float flimit) +{ + if ( flimit < 0 ) { + post( "countund~: wrong count limit" ); + return; + } else { + x->x_limit=(int)flimit; + } +} + +static void *countund_bang(t_countund *x) +{ + + if ( x->x_up ) { + x->x_value+=1; + if (x->x_value>x->x_limit) { + x->x_value=x->x_limit-1; + x->x_up=0; + } + } else { + x->x_value-=1; + if (x->x_value<0) { + x->x_value=1; + x->x_up=1; + } + } + outlet_float( x->x_obj.ob_outlet, x->x_value ); + return; +} + +void countund_setup(void) +{ + post(countund_version); + countund_class = class_new(gensym("countund"), (t_newmethod)countund_new, + (t_method)countund_free, + sizeof(t_countund), 0, A_DEFFLOAT, 0); + class_addmethod( countund_class, (t_method)countund_bang, &s_bang, 0); + class_addmethod( countund_class, (t_method)countund_limit, gensym("limit"), A_FLOAT, 0); +} |