1 files changed, 47 insertions, 0 deletions
diff --git a/pd/doc/6.externs/obj1.c b/pd/doc/6.externs/obj1.c
new file mode 100644
index 00000000..0618d646
--- /dev/null
+++ b/pd/doc/6.externs/obj1.c
@@ -0,0 +1,47 @@
+/* code for "obj1" pd class.  This takes two messages: floating-point
+numbers, and "rats", and just prints something out for each message. */
+
+#include "m_pd.h"
+
+    /* the data structure for each copy of "obj1".  In this case we
+    on;y need pd's obligatory header (of type t_object). */
+typedef struct obj1
+{
+  t_object x_ob;
+} t_obj1;
+
+    /* this is called back when obj1 gets a "float" message (i.e., a
+    number.) */
+void obj1_float(t_obj1 *x, t_floatarg f)
+{
+    post("obj1: %f", f);
+}
+
+    /* this is called when obj1 gets the message, "rats". */
+void obj1_rats(t_obj1 *x)
+{
+    post("obj1: rats");
+}
+
+    /* this is a pointer to the class for "obj1", which is created in the
+    "setup" routine below and used to create new ones in the "new" routine. */
+t_class *obj1_class;
+
+    /* this is called when a new "obj1" object is created. */
+void *obj1_new(void)
+{
+    t_obj1 *x = (t_obj1 *)pd_new(obj1_class);
+    post("obj1_new");
+    return (void *)x;
+}
+
+    /* this is called once at setup time, when this code is loaded into Pd. */
+void obj1_setup(void)
+{
+    post("obj1_setup");
+    obj1_class = class_new(gensym("obj1"), (t_newmethod)obj1_new, 0,
+    	sizeof(t_obj1), 0, 0);
+    class_addmethod(obj1_class, (t_method)obj1_rats, gensym("rats"), 0);
+    class_addfloat(obj1_class, obj1_float);
+}
+