From c4ed8e6d68566b4dd6e4562b0d88d2fe4ad895b2 Mon Sep 17 00:00:00 2001
From: joo <john.macinroe@gmail.com>
Date: Sun, 25 Sep 2016 22:16:46 +0200
Subject: [PATCH] Add support for Minecraft pre-release 16w36a (protocol 305).
 Add max_length property to ChatPacket.

---
 minecraft/__init__.py           |  1 +
 minecraft/networking/packets.py | 19 ++++++++++++++++---
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/minecraft/__init__.py b/minecraft/__init__.py
index b80249b..4975811 100644
--- a/minecraft/__init__.py
+++ b/minecraft/__init__.py
@@ -26,6 +26,7 @@ SUPPORTED_MINECRAFT_VERSIONS = {
     '16w33a':   303,
     '16w35a':   304,
     '16w36a':   305,
+    '16w38a':   306,
 }
 
 SUPPORTED_PROTOCOL_VERSIONS = sorted(SUPPORTED_MINECRAFT_VERSIONS.values())
diff --git a/minecraft/networking/packets.py b/minecraft/networking/packets.py
index 07ada31..5b31fea 100644
--- a/minecraft/networking/packets.py
+++ b/minecraft/networking/packets.py
@@ -86,9 +86,12 @@ class Packet(object):
     @context.setter
     def context(self, _context):
         self._context = _context
-        if _context is not None:
-            self.id = self.get_id(_context)
-            self.definition = self.get_definition(_context)
+        self._context_changed()
+
+    def _context_changed(self):
+        if self._context is not None:
+            self.id = self.get_id(self._context)
+            self.definition = self.get_definition(self._context)
         else:
             self.id = None
             self.definition = None
@@ -700,6 +703,16 @@ class ChatPacket(Packet):
         return 0x02 if context.protocol_version >= 107 else \
                0x01
 
+    @staticmethod
+    def get_max_length(context):
+        return 256 if context.protocol_version >= 305 else \
+               100
+
+    @property
+    def max_length(self):
+        if self.context is not None:
+            return self.get_max_length(self.context)
+
     packet_name = "chat"
     definition = [
         {'message': String}]