From b62e033801895ad633f702685e50cf367ae0adee Mon Sep 17 00:00:00 2001
From: Peter Ward <peteraward@gmail.com>
Date: Sat, 21 Jul 2012 12:45:38 +1000
Subject: Add ZMQ engine and viewer.

---
 snakegame/engine.py | 18 +-----------------
 snakegame/zmq.py    | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 17 deletions(-)
 create mode 100644 snakegame/zmq.py

diff --git a/snakegame/engine.py b/snakegame/engine.py
index 7ba9e0b..6a981a1 100644
--- a/snakegame/engine.py
+++ b/snakegame/engine.py
@@ -16,7 +16,7 @@ class Engine(object):
     def __init__(
         self,
         rows, columns, n_apples,
-        wrap=True, results=False,
+        wrap=True,
         random=None,
         *args, **kwargs
     ):
@@ -28,9 +28,6 @@ class Engine(object):
 
         self.wrap = wrap
         self.bots = {}
-        self.results = None
-        if results:
-            self.results = open('results.csv', 'a+')
 
         self.new_game(rows, columns, n_apples)
 
@@ -101,19 +98,6 @@ class Engine(object):
         bot = self.bots[letter]
         del self.bots[letter]
 
-        if not self.results:
-            return
-
-        try:
-            name = bot[0].__name__
-        except AttributeError:
-            pass
-        else:
-            apple_score = len(bot[2])
-            self.results.write('%s,%s,%s,%s\n' % \
-                (self.game_id, name, apple_score, time_score))
-            self.results.flush()
-
     def update_snakes(self):
         self.game_ticks += 1
 
diff --git a/snakegame/zmq.py b/snakegame/zmq.py
new file mode 100644
index 0000000..c38c680
--- /dev/null
+++ b/snakegame/zmq.py
@@ -0,0 +1,35 @@
+from __future__ import absolute_import
+
+import pickle
+
+class Viewer(object):
+    def __init__(self, engine, sock):
+        self.sock = sock
+        self.engine = engine
+
+    def run(self):
+        for board in self.engine:
+            bots = {
+                letter: (None, colour, None, team)
+                for letter, (_, colour, _, team) in self.engine.bots.iteritems()
+            }
+
+            msg = pickle.dumps({
+                'bots': bots,
+                'board': board,
+            }, protocol=2)
+
+            self.sock.send(msg)
+
+class Engine(object):
+    def __init__(self, sock):
+        self.sock = sock
+
+    def __iter__(self):
+        while True:
+            if not self.sock.poll(timeout=2000):
+                break
+            msg = self.sock.recv()
+            obj = pickle.loads(msg)
+            self.bots = obj['bots']
+            yield obj['board']
-- 
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