364 lines
12 KiB
Python
364 lines
12 KiB
Python
import importlib
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import json
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import queue
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import re
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import urllib.error
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import urllib.request
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import threading
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import time
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import traceback
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import sys
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from pathlib import Path
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import logging
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log = logging.getLogger('werkzeug')
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log.setLevel(logging.ERROR)
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from flask import Flask, abort, send_file
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from flask_cors import CORS
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build_folder = 'web_interface/build'
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app = Flask(__name__, template_folder=build_folder, static_folder=build_folder, static_url_path='')
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CORS(app)
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from munch import Munch
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from watchdog.observers import Observer
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from watchdog.events import FileSystemEventHandler
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from mosfet import connect
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global_state = Munch()
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g = global_state
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g.connection = False
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g.connected = False
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g.connection_status = 'disconnected'
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g.player_position = None
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g.last_chat = None
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g.name = None
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g.mcdata = False
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g.pos = False
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g.dimension = None
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g.item_lock = False
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g.inv = {}
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g.objects = {}
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g.mobs = {}
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g.players = {}
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g.player_names = {}
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g.window = None
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g.job = None
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g.correction_count = 0
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g.holding = 0
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g.afk = False
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g.health = None
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g.food = None
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g.hunger = None
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g.food_saturation = None
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g.saturation = None
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g.health_update_received = False
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g.health_updated_at = None
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g.dead = False
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g.sand_origin = None
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g.reload_lock = threading.RLock()
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_item_icon_cache = Path(__file__).resolve().parent / 'web_interface' / 'item_cache'
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_item_icon_locks = {}
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_item_icon_locks_guard = threading.Lock()
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def _api_json_default(value):
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"""Serialize live protocol objects without invoking fragile __repr__ code."""
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from minecraft.networking.packets import Packet
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if isinstance(value, Packet):
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fields = {key: item for key, item in vars(value).items()
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if key != 'context'}
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return {'__type__': type(value).__name__,
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'packet_name': getattr(value, 'packet_name', None),
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'fields': fields}
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if (type(value).__name__ == 'Slot' and
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all(hasattr(value, key) for key in
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('present', 'item_id', 'item_count'))):
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return {'present': value.present, 'item_id': value.item_id,
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'item_count': value.item_count}
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if all(hasattr(value, key) for key in ('x', 'y', 'z')):
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return {'x': value.x, 'y': value.y, 'z': value.z}
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if isinstance(value, (bytes, bytearray)):
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return value.hex()
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try:
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return str(value)
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except Exception:
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return object.__repr__(value)
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@app.route('/api/global')
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def api_global():
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snapshot = dict(g)
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job = g.get('job')
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job_state = getattr(job, 'state', None) if job else None
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snapshot['job_state'] = getattr(job_state, '__name__', 'idle')
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chunks = g.get('chunks')
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if chunks is not None and hasattr(chunks, 'chunks'):
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snapshot['chunk_state'] = {
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'loaded': len(chunks.chunks),
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'center': chunks.center,
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'radius': chunks.radius,
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'dimension': chunks.dimension,
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}
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response = app.response_class(
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response=json.dumps(snapshot, default=_api_json_default),
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status=200,
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mimetype='application/json'
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)
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return response
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@app.route('/api/items')
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def api_items():
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from mosfet.info.items import ITEM_NAMES
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data = {str(item_id): name for item_id, name in ITEM_NAMES.items()}
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return app.response_class(
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response=json.dumps(data), status=200, mimetype='application/json')
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def _item_texture_urls(name):
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root = 'https://assets.mcasset.cloud/26.3/assets/minecraft/textures'
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yield root + '/item/{}.png'.format(name)
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yield root + '/block/{}.png'.format(name)
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simplified = re.sub(
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r'_(slab|stairs|wall|fence_gate|fence|door|trapdoor|button|'
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r'pressure_plate|sign|hanging_sign|carpet|banner|bed|candle)$',
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'', name)
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if simplified != name:
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yield root + '/block/{}.png'.format(simplified)
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yield root + '/item/{}.png'.format(simplified)
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def _fetch_item_texture(name):
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for url in _item_texture_urls(name):
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request = urllib.request.Request(
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url, headers={'User-Agent': 'curl/8.0 Mosfet/26.3'})
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try:
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with urllib.request.urlopen(request, timeout=4) as response:
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image = response.read(2 * 1024 * 1024 + 1)
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if len(image) <= 2 * 1024 * 1024 and image.startswith(b'\x89PNG\r\n\x1a\n'):
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return image
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except (urllib.error.URLError, TimeoutError, OSError):
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continue
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return None
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@app.route('/api/item-icon/<name>')
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def api_item_icon(name):
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from mosfet.info.items import ITEM_NAMES
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if not re.fullmatch(r'[a-z0-9_]+', name):
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abort(404)
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if name not in set(ITEM_NAMES.values()):
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abort(404)
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with _item_icon_locks_guard:
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lock = _item_icon_locks.setdefault(name, threading.Lock())
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_item_icon_cache.mkdir(parents=True, exist_ok=True)
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cached = _item_icon_cache / (name + '.png')
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with lock:
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if not cached.is_file():
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image = _fetch_item_texture(name)
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if image is None:
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abort(404)
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temporary = cached.with_suffix('.tmp')
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temporary.write_bytes(image)
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temporary.replace(cached)
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return send_file(cached, mimetype='image/png', max_age=86400)
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@app.route('/')
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def root():
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return app.send_static_file('index.html')
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def main():
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"""Run the 26.3 client with in-place development hot reload.
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Application modules are refreshed while the current socket and player
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session remain alive. Connection/bootstrap and packet-schema edits are
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reported as deferred because their listeners cannot safely be replaced
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without reconnecting.
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"""
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g.running = True
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changes = queue.Queue()
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observer = Observer()
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source_root = Path(__file__).resolve().parent / 'mosfet'
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def enqueue_change(event):
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if event.is_directory:
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return
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path = getattr(event, 'dest_path', None) if event.event_type == 'moved' else event.src_path
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if not path or Path(path).suffix != '.py' or '__pycache__' in path:
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return
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changes.put(str(Path(path).resolve()))
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def module_name(path):
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source = Path(path)
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try:
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relative = source.relative_to(source_root)
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except ValueError:
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return None
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parts = list(relative.with_suffix('').parts)
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if parts and parts[-1] == '__init__':
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parts.pop()
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return '.'.join(('mosfet', *parts))
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def reload_changed(paths):
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paths = sorted(set(path for path in paths if Path(path).is_file()))
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if not paths:
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return
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# Don't execute a half-written editor save. If any file is syntactically
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# invalid, keep the currently running code untouched.
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try:
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for path in paths:
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source = Path(path)
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compile(source.read_text(encoding='utf-8'), str(source), 'exec')
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except (OSError, SyntaxError, UnicodeError):
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print('[hot reload] waiting for a valid save', flush=True)
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return
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deferred = []
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modules = []
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for path in paths:
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name = module_name(path)
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if not name:
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continue
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if name in ('mosfet.connect', 'mosfet') or name == 'mosfet.monkey_patch':
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deferred.append(name)
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else:
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modules.append(name)
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if deferred:
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print('[hot reload] {} changed; connection/bootstrap changes are '
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'deferred until the next start (no disconnect performed)'.format(
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', '.join(sorted(set(deferred)))), flush=True)
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if not modules:
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return
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if not g.get('connected') or not g.get('commands'):
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deadline = time.monotonic() + 15.0
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while (g.running and time.monotonic() < deadline and
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(not g.get('connected') or not g.get('commands'))):
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time.sleep(0.1)
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if not g.get('connected') or not g.get('commands'):
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print('[hot reload] runtime not ready; change left for next save',
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flush=True)
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return
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managers_changed = bool(
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{'mosfet.protocol.managers', 'mosfet.protocol.types'} & set(modules))
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core_modules = {
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'mosfet.bot', 'mosfet.commands', 'mosfet.game', 'mosfet.job',
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'mosfet.path', 'mosfet.print_help', 'mosfet.utils',
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'mosfet.vector', 'mosfet.world', 'mosfet.info.blocks',
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'mosfet.info.items', 'mosfet.info.mcdata', 'mosfet.info.mobs',
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}
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# bot.py reloads the legacy gameplay modules and job state classes as
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# one coherent group. Reload protocol adapters first so rebinding sees
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# their latest definitions.
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direct_modules = [name for name in modules
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if name not in core_modules and
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not name.startswith('mosfet.jobs.')]
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if managers_changed and 'mosfet.protocol.managers' not in direct_modules:
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direct_modules.append('mosfet.protocol.managers')
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priority = {
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'mosfet.protocol.types': 0,
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'mosfet.protocol.packets': 1,
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'mosfet.protocol.managers': 2,
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'mosfet.protocol.modern': 3,
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}
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direct_modules.sort(key=lambda name: (priority.get(name, 10), name))
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connection = g.connection
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packet_lock = getattr(connection, 'packet_listener_lock', None)
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try:
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if packet_lock is None:
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with g.reload_lock:
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apply_reload(direct_modules, managers_changed)
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else:
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# Match packet dispatch's lock order (listener lock, then the
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# runtime lock) so callbacks cannot race listener replacement.
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with packet_lock:
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with g.reload_lock:
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apply_reload(direct_modules, managers_changed)
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except Exception:
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traceback.print_exc()
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print('[hot reload] failed; connection left running', flush=True)
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def apply_reload(direct_modules, managers_changed):
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for name in direct_modules:
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module = sys.modules.get(name)
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if module is not None:
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importlib.reload(module)
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bot_module = sys.modules.get('mosfet.bot')
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if bot_module is None:
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bot_module = importlib.import_module('mosfet.bot')
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bot_module = importlib.reload(bot_module)
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bot_module.refresh_runtime(global_state,
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reload_managers=managers_changed)
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print('[hot reload] refreshed {} (session preserved)'.format(
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', '.join(direct_modules) if direct_modules else 'bot runtime'),
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flush=True)
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def reload_worker():
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while True:
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path = changes.get()
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if path is None:
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return
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batch = {path}
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stopping = False
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# Coalesce the burst of modified/moved events from editor saves.
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while True:
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try:
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candidate = changes.get(timeout=0.4)
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except queue.Empty:
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break
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if candidate is None:
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stopping = True
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break
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batch.add(candidate)
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time.sleep(0.15)
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reload_changed(batch)
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if stopping:
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return
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event_handler = FileSystemEventHandler()
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event_handler.on_modified = enqueue_change
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event_handler.on_created = enqueue_change
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event_handler.on_moved = enqueue_change
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observer.schedule(event_handler, str(source_root), recursive=True)
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observer.start()
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worker = threading.Thread(target=reload_worker,
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name='mosfet-hot-reloader', daemon=True)
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worker.start()
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try:
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connect.main(global_state)
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except KeyboardInterrupt:
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pass
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except BaseException:
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traceback.print_exc()
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finally:
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g.running = False
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changes.put(None)
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observer.stop()
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observer.join()
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worker.join(timeout=2.0)
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def run_api():
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host = '0.0.0.0'
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port = 3300
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while True:
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print('Trying to run web interface on port:', port)
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print('If it works, go to http://localhost:' + str(port))
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try:
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app.run(host=host, port=port)
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except OSError:
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print()
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print('Error: Port already taken.')
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port += 1
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if __name__ == '__main__':
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threading.Thread(target=run_api, daemon=True).start()
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main()
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