215 lines
8.4 KiB
Python
215 lines
8.4 KiB
Python
# -*- coding: utf-8 -*-
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# main.py - main module, starts game and main loop
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# This file is part of brutalmaze
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#
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# brutalmaze 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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#
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# brutalmaze 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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#
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# You should have received a copy of the GNU General Public License
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# along with brutalmaze. If not, see <http://www.gnu.org/licenses/>.
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#
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# Copyright (C) 2017 Nguyễn Gia Phong
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__version__ = '0.5.1'
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import re
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from argparse import ArgumentParser, RawTextHelpFormatter
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from collections import deque
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try: # Python 3
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from configparser import ConfigParser, NoOptionError, NoSectionError
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except ImportError: # Python 2
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from ConfigParser import ConfigParser, NoOptionError, NoSectionError
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from os.path import join, pathsep
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import pygame
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from pygame import DOUBLEBUF, KEYDOWN, OPENGL, QUIT, RESIZABLE, VIDEORESIZE
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from appdirs import AppDirs
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from .constants import *
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from .maze import Maze
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class ConfigReader:
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"""Object reading and processing INI configuration file for
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Brutal Maze.
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"""
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DEFAULT_BINDINGS = (('New game', 'new', 'F2'),
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('Pause', 'pause', 'p'),
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('Move left', 'left', 'Left'),
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('Move right', 'right', 'Right'),
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('Move up', 'up', 'Up'),
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('Move down', 'down', 'Down'),
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('Long-range attack', 'shot', 'Mouse1'),
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('Close-range attack', 'slash', 'Mouse3'))
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WEIRD_MOUSE_ERR = '{}: Mouse is not a suitable control'
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INVALID_CONTROL_ERR = '{}: {} is not recognized as a valid control key'
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def __init__(self, filenames):
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self.config = ConfigParser()
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self.config.read(filenames)
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def _getconf(self, section, option, val_t):
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if val_t == str:
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return self.config.get(section, option)
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elif val_t == bool:
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return self.config.getboolean(section, option)
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elif val_t == float:
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return self.config.getfloat(section, option)
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elif val_t == int:
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return self.config.getint(section, option)
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def getconf(self, section, option, val_t=str, fallback=None):
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"""Return the value of the option in the given section.
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If the value is not found, return fallback.
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"""
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try:
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return self._getconf(section, option, val_t)
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except NoSectionError, NoOptionError:
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return val_t() if fallback is None else fallback
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def setconf(self, name, section, option, val_t=str, fallback=None):
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"""Set the named attribute to the value of the option in
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the given section.
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If the value is not found and attribute does not exist,
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use fallback.
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"""
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try:
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setattr(self, name, self._getconf(section, option, val_t))
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except NoSectionError, NoOptionError:
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try:
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getattr(self, name)
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except AttributeError:
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setattr(self, name, val_t() if fallback is None else fallback)
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def parse_graphics(self):
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"""Parse graphics configurations."""
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self.setconf('width', 'Graphics', 'Screen width', int, 640)
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self.setconf('height', 'Graphics', 'Screen height', int, 480)
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self.setconf('opengl', 'Graphics', 'OpenGL', bool)
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self.setconf('max_fps', 'Graphics', 'Maximum FPS', float, 60.0)
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def parse_control(self):
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"""Parse control configurations."""
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self.key, self.mouse = {}, {}
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for cmd, alias, bind in self.DEFAULT_BINDINGS:
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i = self.getconf('Control', cmd, fallback=bind).lower()
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if re.match('mouse[1-3]$', i):
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if alias not in ('shot', 'slash'):
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raise ValueError(self.WEIRD_MOUSE_ERR.format(cmd))
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self.mouse[alias] = int(i[-1]) - 1
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continue
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if len(i) == 1:
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self.key[alias] = ord(i)
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continue
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try:
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self.key[alias] = getattr(pygame, 'K_{}'.format(i.upper()))
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except AttributeError:
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raise ValueError(self.INVALID_CONTROL_ERR.format(cmd, i))
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def read_args(self, arguments):
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"""Read and parse a ArgumentParser.Namespace."""
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if arguments.size is not None: self.width, self.height = arguments.size
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if arguments.opengl is not None: self.opengl = arguments.opengl
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if arguments.max_fps is not None: self.max_fps = arguments.max_fps
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def main():
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"""Start game and main loop."""
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# Read configuration file
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dirs = AppDirs(appname='brutalmaze', appauthor=False, multipath=True)
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parents = dirs.site_config_dir.split(pathsep)
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parents.append(dirs.user_config_dir)
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filenames = [join(parent, 'settings.ini') for parent in parents]
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config = ConfigReader(filenames)
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config.parse_graphics()
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# Parse command-line arguments
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parser = ArgumentParser(formatter_class=RawTextHelpFormatter)
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parser.add_argument('-v', '--version', action='version',
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version='Brutal Maze {}'.format(__version__))
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parser.add_argument(
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'-c', '--config', metavar='PATH',
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help='location of the configuration file (fallback: {})'.format(
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pathsep.join(filenames)))
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parser.add_argument(
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'-s', '--size', type=int, nargs=2, metavar=('X', 'Y'),
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help='the desired screen size (fallback: {}x{})'.format(config.width,
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config.height))
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parser.add_argument(
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'--opengl', action='store_true', default=None,
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help='enable OpenGL (fallback: {})'.format(config.opengl))
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parser.add_argument('--no-opengl', action='store_false', dest='opengl',
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help='disable OpenGL')
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parser.add_argument(
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'-f', '--max-fps', type=float, metavar='FPS',
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help='the desired maximum FPS (fallback: {})'.format(config.max_fps))
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args = parser.parse_args()
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# Manipulate config
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if args.config: config.config.read(args.config)
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config.read_args(args)
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config.parse_graphics()
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config.parse_control()
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# Initialization
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pygame.mixer.pre_init(frequency=44100)
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pygame.init()
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pygame.mixer.music.load(MUSIC)
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pygame.mixer.music.play(-1)
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pygame.display.set_icon(ICON)
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pygame.fastevent.init()
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clock, flash_time, fps = pygame.time.Clock(), deque(), config.max_fps
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scrtype = (config.opengl and DOUBLEBUF|OPENGL) | RESIZABLE
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maze = Maze((config.width, config.height), scrtype, fps)
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# Main loop
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going = True
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while going:
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events = pygame.fastevent.get()
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for event in events:
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if event.type == QUIT:
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going = False
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elif event.type == VIDEORESIZE:
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maze.resize((event.w, event.h), scrtype)
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elif event.type == KEYDOWN:
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if event.key == config.key['new']:
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maze.__init__((maze.w, maze.h), scrtype, fps)
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elif event.key == config.key['pause'] and not maze.hero.dead:
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maze.paused ^= True
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if not maze.hero.dead:
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keys = pygame.key.get_pressed()
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maze.move(keys[config.key['left']] - keys[config.key['right']],
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keys[config.key['up']] - keys[config.key['down']], fps)
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buttons = pygame.mouse.get_pressed()
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try:
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maze.hero.firing = keys[config.key['shot']]
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except KeyError:
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maze.hero.firing = buttons[config.mouse['shot']]
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try:
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maze.hero.slashing = keys[config.key['slash']]
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except KeyError:
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maze.hero.slashing = buttons[config.mouse['slash']]
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# Compare current FPS with the average of the last 5 seconds
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if len(flash_time) > 5:
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new_fps = 5000.0 / (flash_time[-1] - flash_time[0])
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flash_time.popleft()
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if new_fps < fps:
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fps -= 1
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elif fps < config.max_fps and not maze.paused:
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fps += 5
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maze.update(fps)
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flash_time.append(pygame.time.get_ticks())
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clock.tick(fps)
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pygame.quit()
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