Improve exception handling

bot.py

@@ -14,6 +14,7 @@ SERVER = os.environ['SERVER']
 import monkey_patch # must be before any possible pyCraft imports
 
 from custom.managers import DataManager, ChunksManager, ChatManager
+from custom.managers.chunks import ChunkNotLoadedException
 
 from minecraft import authentication
 from minecraft.exceptions import YggdrasilError
@@ -53,7 +54,7 @@ def tick(global_state):
 
     try:
         g.chunks.get_block_at(*utils.pint(p))
-    except chunks.ChunkNotLoadedException:
+    except ChunkNotLoadedException:
         return
 
     #l.jobstate.run()
@@ -161,7 +162,7 @@ def bot(global_state):
     g = global_state
     g.local_state = Bunch()
 
-    if 'mcdata' not in g:
+    if not g.mcdata:
         g.mcdata = DataManager('./mcdata')
 
     if not g.connection:
@@ -175,7 +176,6 @@ def bot(global_state):
         g.connection = Connection(SERVER, 25565, auth_token=auth_token)
 
         g.chunks = ChunksManager(g.mcdata)
-        g.chunks.register(g.connection)
 
         g.connection.connect()
 
@@ -184,6 +184,8 @@ def bot(global_state):
             handler(packet, g)
         return wrapper
 
+    g.chunks.register(g.connection)
+
     h1 = packet_wrapper(packet_handlers.handle_join_game)
     g.connection.register_packet_listener(h1, clientbound.play.JoinGamePacket)
 

main.py

@@ -1,6 +1,7 @@
 import importlib
 import threading
 import time
+import traceback
 
 from flask import Flask
 app = Flask(__name__)
@@ -15,6 +16,7 @@ global_state = Bunch()
 g = global_state
 g.local_state = False
 g.connection = False
+g.mcdata = False
 g.pos = False
 
 @app.route('/')
@@ -42,9 +44,16 @@ def main():
 
     try:
         while True:
-            g.running = True
-            bot.bot(global_state)
-            importlib.reload(bot)
+            try:
+                g.running = True
+                bot.bot(global_state)
+                importlib.reload(bot)
+            except BaseException as e:
+                g.running = True
+                traceback.print_exc()
+                print('Locking...')
+                while g.running:
+                    time.sleep(1)
     except KeyboardInterrupt:
         observer.stop()
     observer.join()

packet_handlers.py

@@ -18,8 +18,6 @@ def handle_join_game(packet, g):
 
 def handle_block_change(packet, g):
     l = g.local_state
-    print('block change:')
-    print(packet)
 
     if packet.block_state_id == 3887:
         try:
@@ -92,6 +90,10 @@ def handle_chat(message, g):
     if command == 'afk':
         reply = '/afk'
 
+    if command == 'error':
+        reply = 'ok'
+        raise
+
     if reply:
         print(reply)
         g.chat.send(reply)