Merge pull request #7 from mandad/master

Timewarp setting & getting

Author: pmnewman

.gitignore

@@ -1 +1,2 @@
 /.DS_Store
+/build

Documentation/examples/callbackcomms_timewarp.py

@@ -0,0 +1,37 @@
+import pymoos
+import time
+
+#another simple example - here we install a callback which
+#fires every time mail arrives. We need to call fetch to
+#retrieve it though. We send mail in simple forever loop
+#We also subscribe to the same message..
+
+#This version demonstrates setting and using a timewarp that allows speeding up
+#simulations with MOOS
+
+comms = pymoos.comms()
+
+def c():
+    print("\t|-Time Warp @ {0:.1f} \n".format(pymoos.get_moos_timewarp()))
+    print("\t|-Time Warp delay @ {0:.1f} ms \n".format( \
+        comms.get_comms_control_timewarp_scale_factor()*pymoos.get_moos_timewarp()))
+    return comms.register('simple_var',0)
+
+def m():
+    map(lambda msg: msg.trace(), comms.fetch() )
+    return True
+        
+def main():
+    
+    comms.set_on_connect_callback(c)
+    comms.set_on_mail_callback(m)
+    pymoos.set_moos_timewarp(10)
+    comms.set_comms_control_timewarp_scale_factor(0.4)
+    comms.run('localhost',9000,'pymoos')
+
+    while True:
+        time.sleep(1.0)
+        comms.notify('simple_var','a string',pymoos.time())
+    
+if __name__=="__main__":
+    main()

pyMOOS.cpp

@@ -398,6 +398,8 @@ BOOST_PYTHON_MODULE(pymoos)
     bp::def("time", &MOOSTime, time_overloads());
     bp::def("local_time", &MOOSLocalTime, time_overloads());
     bp::def("is_little_end_in", &IsLittleEndian);
+    bp::def("set_moos_timewarp", &SetMOOSTimeWarp);
+    bp::def("get_moos_timewarp", &GetMOOSTimeWarp);
 
     bp::register_exception_translator<pyMOOSException>(&MOOSExceptionTranslator);