diff options
Diffstat (limited to 'pong.c')
| -rw-r--r-- | pong.c | 332 |
1 files changed, 332 insertions, 0 deletions
@@ -0,0 +1,332 @@ +/* --------------------------- pong ------------------------------------------ */
+/* */
+/* A virtual bouncing ball. */
+/* Written by Olaf Matthes <olaf.matthes@gmx.de> */
+/* Based on pong (for Max) version 1.5 written by Richard Dudas. */
+/* Get source at http://www.akustische-kunst.org/puredata/maxlib/ */
+/* */
+/* 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. */
+/* */
+/* 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 "m_pd.h"
+
+static char *version = "pong v0.1, ported by Olaf Matthes <olaf.matthes@gmx.de>\n"
+ " written for Max by Richard Dudas";
+
+typedef struct pong
+{
+ t_object x_obj;
+ t_outlet *p_bounceout;
+ t_outlet *p_handout;
+ t_outlet *p_velout;
+ t_outlet *p_heightout;
+ t_clock *p_klok;
+
+ t_int p_ms; // ms count
+ t_float p_time; // current time div by warp
+ t_float p_timegrain; // timegrain in seconds
+ t_float p_timegrainin; // timegrain in ms
+ t_float p_warp; // timewarp in ms
+
+ t_float p_dinit; // init distance
+ t_float p_vinit; // init velocity
+ t_float p_ainit; // base acceleration def -100
+ t_float p_damping; // realtime multiplicative damping
+ t_float p_dhand; // virtual hand distance
+ t_float p_force; // force of hand 1.0 = no force
+
+ t_float p_accel; // current accel value
+ t_float p_vi; // current velocity
+ t_float p_di; // current distance
+ t_float p_dt; // distance out
+ t_float p_dtprev; // previous distance out for accel computation
+ t_float p_vt; // velocity out
+ t_int p_prevchg; // for logical transition
+} t_pong;
+
+/* ---------------------------------------------------------- */
+/* ---- this stuff is mainly for the timer, on off etc... --- */
+/* ---------------------------------------------------------- */
+
+static void pong_reset(t_pong *x)
+{
+ x->p_di = x->p_dinit;
+ x->p_dt = x->p_dinit; // added
+ x->p_dtprev = x->p_dinit; // added
+ x->p_vi = x->p_vinit;
+ x->p_vt = x->p_vinit; // added
+ x->p_ms = 0;
+ x->p_time = 0.;
+ x->p_ainit = -100.; // added, but currently disabled
+ x->p_accel = -100.; // reactivated (?)
+ x->p_damping = 1.; // i.e. no initial damping
+ x->p_prevchg = 0; // added
+
+/* x->p_ms = 0;
+ x->p_time = 0.;
+ x->p_timegrain = 0.05; // if ms grain = 50
+ x->p_timegrainin = 50;
+
+ x->p_vinit = 0.;
+ x->p_dinit = 100.;
+ x->p_ainit = -100.;
+ x->p_damping = 1.; // i.e. no initial damping
+ x->p_dhand = 100.;
+ x->p_force = 1.; // i.e. hand does nothing initially
+
+ x->p_accel = -100.;
+ x->p_vi = 0.;
+ x->p_di = 100.;
+
+ x->p_dt = 100.; // changed from 0 to 100
+ x->p_dtprev = 100.; // changed from 0 to 100
+ x->p_vt = 0.;
+ x->p_prevchg = 0;
+*/
+}
+
+/* ---------------------------------------------------------- */
+
+static void pong_timein(t_pong *x, t_floatarg n)
+{
+ int thischg;
+
+ x->p_time = n / x->p_warp;
+
+ x->p_dt = ((x->p_accel * (x->p_time*x->p_time)) + (x->p_time * x->p_vi) + x->p_di);
+ x->p_vt = ((x->p_dt - x->p_dtprev) / x->p_timegrain);
+
+ if (x->p_dt < 0.)
+ {
+ x->p_dt *= -1.;
+
+ x->p_di = 0.;
+ x->p_vi = x->p_vt * (-1. * x->p_damping); // -1 will eventually be a damping variable
+ //post("vel at bounce %f", x->p_vi);
+ outlet_bang(x->p_bounceout);
+ x->p_ms = 0;
+ //x->p_dtprev= 0.;
+ }
+ //else
+ x->p_dtprev = x->p_dt;
+
+ /* ---------------------------------- virtual hand below ------------ */
+
+ if (x->p_dt > x->p_dhand) // presuming the hand is initially equal to the dinit
+ thischg = 1;
+ else
+ thischg = 0;
+
+ if (thischg != x->p_prevchg)
+ {
+ x->p_ms = 0;
+ x->p_vi = x->p_vt;
+ x->p_di = x->p_dhand;
+
+ if (thischg == 0)
+ {
+ x->p_accel = -100.; // x->p_ainit in lieu of -100.
+ outlet_float(x->p_handout, 0);
+ }
+ else
+ {
+ x->p_accel = (x->p_force * -100.); // x->p_ainit in lieu of -100.
+ outlet_float(x->p_handout, 1);
+ }
+ }
+
+ x->p_prevchg = thischg;
+ outlet_float(x->p_velout, x->p_vt);
+ outlet_float(x->p_heightout, x->p_dt);
+}
+
+static void pong_onoff(t_pong *x, t_floatarg n)
+{
+ if (n != 0)
+ clock_delay(x->p_klok, 0);
+ else
+ clock_unset(x->p_klok);
+}
+
+/* ---------------------------------------------------------- */
+
+static void pong_bang(t_pong *x)
+{
+ x->p_ms = 0;
+ clock_delay(x->p_klok, 0);
+}
+
+static void pong_stop(t_pong *x)
+{
+ clock_unset(x->p_klok);
+}
+
+/* ---------------------------------------------------------- */
+
+static void pong_tick(t_pong *x)
+{
+ clock_delay(x->p_klok, (t_int)x->p_timegrainin);
+ pong_timein(x, x->p_ms);
+ //outlet_float(x->p_heightout, (float)x->p_ms);
+ x->p_ms = x->p_ms + x->p_timegrainin;
+}
+
+/* ---------------------------------------------------------- */
+
+static void pong_tgrain(t_pong *x, t_floatarg n)
+{
+ x->p_timegrain = n / x->p_warp;
+ x->p_timegrainin = n;
+ post("timegrain %f", x->p_timegrain);
+}
+
+/* ---------------------------------------------------------- */
+
+static void pong_warpin(t_pong *x, t_floatarg n)
+{
+ x->p_warp = n;
+ x->p_timegrain = x->p_timegrainin / x->p_warp;
+ post("timewarp %f ms = one sec", x->p_warp);
+}
+
+/* ---------------------------------------------------------- */
+/* ----- these are to receive and store the init values ----- */
+/* ---------------------------------------------------------- */
+
+static void pong_initdist(t_pong *x, t_floatarg n)
+{
+ x->p_dinit = n;
+}
+
+static void pong_initvel(t_pong *x, t_floatarg n)
+{
+ x->p_vinit = n;
+}
+
+static void pong_damp(t_pong *x, t_floatarg n)
+{
+ x->p_damping = n;
+}
+
+/* ---------------------------------------------------------- */
+
+static void pong_baseacc(t_pong *x, t_floatarg n)
+{
+ //post ("baseaccel currently disabled", 0);
+ x->p_ainit = n;
+ x->p_accel = x->p_ainit;
+}
+
+/* ---------------------------------------------------------- */
+
+static void pong_hand(t_pong *x, t_floatarg n)
+{
+ x->p_dhand = n;
+}
+
+static void pong_force(t_pong *x, t_floatarg n)
+{
+ x->p_force = n;
+}
+
+/* ---------------------------------------------------------- */
+
+
+static t_class *pong_class;
+
+static void *pong_new(t_floatarg n)
+{
+ t_pong *x = (t_pong *)pd_new(pong_class);
+
+ x->p_klok = clock_new(x, (t_method)pong_tick);
+
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("dist")); // distance
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("velo")); // velocity
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("damp")); // damping
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("force")); // hand force 1.0 = no force
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("hand")); // virtual hand (distance)
+
+
+ if (n > 0)
+ x->p_warp = n;
+ else
+ x->p_warp = 1000.;
+
+ x->p_ms = 0;
+ x->p_time = 0.;
+ x->p_timegrain = 0.05; // if ms grain = 50
+ x->p_timegrainin = 50.0;
+
+ x->p_vinit = 0.;
+ x->p_dinit = 100.;
+ x->p_ainit = -100.;
+ x->p_damping = 1.; // i.e. no initial damping
+ x->p_dhand = 100.;
+ x->p_force = 1.; // i.e. hand does nothing initially
+
+ x->p_accel = -100.;
+ x->p_vi = 0.;
+ x->p_di = 100.;
+
+ x->p_dt = 100.; // changed from 0 to 100
+ x->p_dtprev = 100.; // changed from 0 to 100
+ x->p_vt = 0.;
+ x->p_prevchg = 0;
+
+ x->p_bounceout = outlet_new(&x->x_obj, gensym("bang"));
+ x->p_handout = outlet_new(&x->x_obj, gensym("float"));
+ x->p_velout = outlet_new(&x->x_obj, gensym("float"));
+ x->p_heightout = outlet_new(&x->x_obj, gensym("float"));
+
+ return (x);
+}
+
+#ifndef MAXLIB
+void pong_setup(void)
+{
+ pong_class = class_new(gensym("pong"), (t_newmethod)pong_new,
+ 0, sizeof(t_pong), 0, A_DEFFLOAT, 0);
+#else
+void maxlib_pong_setup(void)
+{
+ pong_class = class_new(gensym("maxlib_pong"), (t_newmethod)pong_new,
+ 0, sizeof(t_pong), 0, A_DEFFLOAT, 0);
+ class_addcreator((t_newmethod)pong_new, gensym("pong"), A_DEFFLOAT, 0);
+#endif
+ /* method handlers for inlets */
+ class_addmethod(pong_class, (t_method)pong_initdist, gensym("dist"), A_FLOAT, 0);
+ class_addmethod(pong_class, (t_method)pong_initvel, gensym("velo"), A_FLOAT, 0);
+ class_addmethod(pong_class, (t_method)pong_damp, gensym("damp"), A_FLOAT, 0);
+ class_addmethod(pong_class, (t_method)pong_force, gensym("force"), A_FLOAT, 0);
+ class_addmethod(pong_class, (t_method)pong_hand, gensym("hand"), A_FLOAT, 0);
+ /* method handlers for other messages to first inlet */
+ class_addmethod(pong_class, (t_method)pong_tgrain, gensym("timegrain"), A_FLOAT, 0);
+ class_addmethod(pong_class, (t_method)pong_warpin, gensym("timewarp"), A_FLOAT, 0);
+ class_addmethod(pong_class, (t_method)pong_baseacc, gensym("baseaccel"), A_FLOAT, 0);
+ class_addmethod(pong_class, (t_method)pong_reset, gensym("reset"), 0);
+ class_addmethod(pong_class, (t_method)pong_stop, gensym("stop"), 0);
+
+ class_addfloat(pong_class, pong_onoff);
+ class_addbang(pong_class, pong_bang);
+#ifndef MAXLIB
+
+ post(version);
+#else
+ class_sethelpsymbol(pong_class, gensym("maxlib/pong-help.pd"));
+#endif
+}
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