Brian S. Stephan
0bd681c324
okay, it's time. we got around for a while with all sorts of silly config options and exceptions and common strings triggering bot commands. but now it's time to man up and expect modules to be more strict and less loosey-goosey. convert the popular modules (i.e. the ones that still work) to trigger on !pi rather than pi, etc. usually, this is achieved via regex searches, although there are some weird bugs (ones i'm hoping are caused by other recursion/alias bugs and not this commit). more code around this will be gutted soon, but this, at least, means you can't say 'tweet that shit, yo' and accidentally trigger the bot.
107 lines
3.9 KiB
Python
107 lines
3.9 KiB
Python
"""
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Pi - calculate pi over time via the monte carlo method. idea borrowed from #linode
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Copyright (C) 2010 Brian S. Stephan
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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import math
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import random
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import re
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import sqlite3
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from extlib import irclib
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from Module import Module
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class Pi(Module):
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"""
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Use the Monte Carlo method to approximate pi. Each time this method is called,
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it calculates a random point inside a square on the xy plane. If that point also
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falls within a circle bound within that square, it is added to the count of points
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inside. Over time, 4 * count_inside / count approaches pi.
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Idea from #linode on OFTC. Code from http://www.eveandersson.com/pi/monte-carlo-circle
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"""
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def db_init(self):
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"""
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Initialize database tables.
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"""
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# init the database if pi table doesn't exist
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version = self.db_module_registered(self.__class__.__name__)
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if version == None:
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# create tables
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db = self.get_db()
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try:
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db.execute('''
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CREATE TABLE pi_log (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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count_inside INTEGER NOT NULL,
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count_total INTEGER NOT NULL,
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time TEXT DEFAULT CURRENT_TIMESTAMP
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)
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''')
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db.execute('''
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CREATE VIEW pi_latest_pi AS
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SELECT count_inside, count_total
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FROM pi_log
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ORDER BY id DESC
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''')
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db.execute('INSERT INTO drbotzo_modules VALUES (?,?)', (self.__class__.__name__, 1))
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db.commit()
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except sqlite3.Error as e:
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db.rollback()
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print("sqlite error: " + str(e))
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raise
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def do(self, connection, event, nick, userhost, replypath, what, admin_unlocked):
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match = re.search('^!pi$', what)
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if match:
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db = self.get_db()
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try:
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cur = db.cursor()
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pi_data = cur.execute('SELECT * FROM pi_latest_pi')
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datum = pi_data.fetchone()
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if datum == None:
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count_inside = 0
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count = 0
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else:
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# load values
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count_inside = datum['count_inside']
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count = datum['count_total']
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x = random.random()
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y = random.random()
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inside = False
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d = math.hypot(x,y)
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if d < 1:
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inside = True
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count_inside += 1
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count += 1
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pi = 4.0 * count_inside / count
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cur.execute('INSERT INTO pi_log (count_inside, count_total) VALUES (?,?)', (count_inside, count))
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db.commit()
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except sqlite3.Error as e:
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db.rollback()
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return self.reply(connection, replypath, "sqlite error: " + str(e))
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return self.reply(connection, replypath, "({0:.10f}, {1:.10f}) is {2}within the circle. pi is {5:.10f}. (i:{3:d} p:{4:d})".format(x, y, "" if inside else "not ", count_inside, count, pi));
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# vi:tabstop=4:expandtab:autoindent
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# kate: indent-mode python;indent-width 4;replace-tabs on;
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