Added Python3 compatible xpc client. (#156)

Python3/src/playbackExample.py

@@ -0,0 +1,82 @@
+from time import sleep
+import xpc
+
+def record(path, interval = 0.1, duration = 60):
+    try:
+        fd = open(path, "w")
+    except:
+        print "Unable to open file."
+        return
+
+    count = int(duration / interval)
+    if count < 1:
+        print "duration is less than a single frame."
+        return
+
+    with xpc.XPlaneConnect("localhost", 49009, 0, 1000) as client:
+        print "Recording..."
+        for i in range(0, count):
+            try:
+                posi = client.getPOSI()
+                fd.write("{0}, {1}, {2}, {3}, {4}, {5}, {6}\n".format(*posi))
+            except:
+                print "Error reading position"
+                continue
+            sleep(interval);
+        print "Recording Complete"
+    fd.close()
+
+def playback(path, interval):
+    try:
+        fd = open(path, "r")
+    except:
+        print "Unable to open file."
+        return
+
+    with xpc.XPlaneConnect("localhost", 49009, 0, 1000) as client: 
+        print "Starting Playback..."
+        for line in fd:
+            try:
+                posi = [ float(x) for x in line.split(',') ]
+                posi = client.sendPOSI(posi)
+            except:
+                print "Error sending position"
+                continue
+            sleep(interval);
+        print "Playback Complete"
+    fd.close()
+
+def printMenu(title, opts):
+    print "\n+---------------------------------------------- +"
+    print "|  {0:42}   |\n".format(title)
+    print "+---------------------------------------------- +"
+    for i in range(0,len(opts)):
+        print "| {0:2}. {1:40} |".format(i + 1, opts[i])
+    print "+---------------------------------------------- +"
+    return int(raw_input("Please select and option: "))
+
+def ex():
+    print "X-Plane Connect Playback Example  [Version 1.2.0]"
+    print "(c) 2013-2015 United States Government as represented by the Administrator"
+    print "of the National Aeronautics and Space Administration. All Rights Reserved."
+
+    mainOpts = [ "Record X-Plane", "Playback File", "Exit" ]
+
+    while True:
+        opt = printMenu("What would you like to do?", mainOpts)
+        if opt == 1:
+            path = raw_input("Enter save file path: ")
+            interval = float(raw_input("Enter interval between frames (seconds): "))
+            duration = float(raw_input("Enter duration to record for (seconds): "))
+            record(path, interval, duration)
+        elif opt == 2:
+            path = raw_input("Enter save file path: ")
+            interval = float(raw_input("Enter interval between frames (seconds): "))
+            playback(path, interval)
+        elif opt == 3:
+            return;
+        else:
+            print "Unrecognized option."
+
+if __name__ == "__main__":
+    ex()