oops, omitted file

direct/src/extensions/CInterval-extensions.py

@@ -0,0 +1,46 @@
+
+    """
+    CInterval-extensions module: contains methods to extend functionality
+    of the CInterval class
+    """
+
+    def play(self, t0 = 0.0, duration = None, scale = 1.0):
+        """ play(t0, duration)
+        """
+        self.stop()
+        if duration:  # None or 0 implies full length
+            self.setupPlay(t0, t0 + duration, scale)
+        else:
+            self.setupPlay(t0, -1, scale)
+        self.__loop = 0
+        # Spawn task
+        taskMgr.add(self.__playTask, self.getName() + '-play')
+
+    def loop(self, t0 = 0.0, duration = None, scale = 1.0):
+        self.play(t0, duration, scale)
+        self.__loop = 1
+        return
+
+    def stop(self):
+        """ stop()
+        """
+        # Kill task
+        taskMgr.remove(self.getName() + '-play')
+        return self.getT()
+    
+    def setFinalT(self):
+        # We have to define this at the Python level so we can
+        # implicitly call stop().
+        self.stop()
+        self.finalize()
+
+    def isPlaying(self):
+        return taskMgr.hasTaskNamed(self.getName() + '-play')
+
+    def __playTask(self, task):
+        import Task
+        loopCount = self.stepPlay()
+        if loopCount == 0 or self.__loop:
+            return Task.cont
+        else:
+            return Task.done