418 lines
17 KiB
Python
418 lines
17 KiB
Python
# -*- coding: utf-8 -*-
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# game.py - main module, starts game and main loop
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# Copyright (C) 2017, 2018 Nguyễn Gia Phong
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#
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# This file is part of Brutal Maze.
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#
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# Brutal Maze is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# Brutal Maze 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 Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with Brutal Maze. If not, see <https://www.gnu.org/licenses/>.
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__version__ = '0.7.0'
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import re
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from argparse import ArgumentParser, FileType, RawTextHelpFormatter
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from collections import deque
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try: # Python 3
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from configparser import ConfigParser
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except ImportError: # Python 2
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from ConfigParser import ConfigParser
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from math import atan2, radians, pi
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from os.path import join, pathsep
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from socket import socket, SOL_SOCKET, SO_REUSEADDR
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from sys import stdout
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from threading import Thread
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import pygame
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from pygame import KEYDOWN, QUIT, VIDEORESIZE
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from pygame.time import Clock, get_ticks
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from appdirs import AppDirs
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from .constants import SETTINGS, ICON, MUSIC, HERO_SPEED, COLORS, MIDDLE, WALL
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from .maze import Maze
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from .misc import deg, round2, sign
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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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CONTROL_ALIASES = (('New game', 'new'), ('Toggle pause', 'pause'),
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('Toggle mute', 'mute'),
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('Move left', 'left'), ('Move right', 'right'),
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('Move up', 'up'), ('Move down', 'down'),
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('Auto move', 'autove'),
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('Long-range attack', 'shot'),
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('Close-range attack', 'slash'))
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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(SETTINGS) # default configuration
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self.config.read(filenames)
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# Fallback to None when attribute is missing
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def __getattr__(self, name): return None
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def parse(self):
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"""Parse configurations."""
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self.size = (self.config.getint('Graphics', 'Screen width'),
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self.config.getint('Graphics', 'Screen height'))
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self.max_fps = self.config.getint('Graphics', 'Maximum FPS')
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self.muted = self.config.getboolean('Sound', 'Muted')
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self.musicvol = self.config.getfloat('Sound', 'Music volume')
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self.server = self.config.getboolean('Server', 'Enable')
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self.host = self.config.get('Server', 'Host')
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self.port = self.config.getint('Server', 'Port')
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self.timeout = self.config.getfloat('Server', 'Timeout')
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self.headless = self.config.getboolean('Server', 'Headless')
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if self.server: return
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self.key, self.mouse = {}, {}
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for cmd, alias in self.CONTROL_ALIASES:
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i = self.config.get('Control', cmd)
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if re.match('mouse[1-3]$', i.lower()):
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if alias not in ('autove', '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.lower())
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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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for option in ('size', 'max_fps', 'muted', 'musicvol',
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'server', 'host', 'port', 'timeout', 'headless'):
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value = getattr(arguments, option)
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if value is not None: setattr(self, option, value)
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class Game:
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"""Object handling main loop and IO."""
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def __init__(self, config):
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pygame.mixer.pre_init(frequency=44100)
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pygame.init()
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self.headless = config.headless and config.server
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if config.muted or self.headless:
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pygame.mixer.quit()
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else:
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pygame.mixer.music.load(MUSIC)
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pygame.mixer.music.set_volume(config.musicvol)
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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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if config.server:
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self.server = socket()
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self.server.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
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self.server.bind((config.host, config.port))
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self.server.listen(1)
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print('Socket server is listening on {}:{}'.format(config.host,
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config.port))
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self.timeout = config.timeout
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self.sockinp = 0, 0, -pi * 3 / 4, 0, 0 # freeze and point to NW
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else:
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self.server = self.sockinp = None
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# self.fps is a float to make sure floordiv won't be used in Python 2
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self.max_fps, self.fps = config.max_fps, float(config.max_fps)
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self.musicvol = config.musicvol
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self.key, self.mouse = config.key, config.mouse
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self.maze = Maze(config.max_fps, config.size, config.headless)
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self.hero = self.maze.hero
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self.clock, self.paused = Clock(), False
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def __enter__(self): return self
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def expos(self, x, y):
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"""Return position of the given coordinates in rounded percent."""
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cx = (x+self.maze.x-self.maze.centerx) / self.maze.distance * 100
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cy = (y+self.maze.y-self.maze.centery) / self.maze.distance * 100
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return round2(cx), round2(cy)
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def export(self):
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"""Export maze data to a bytes object."""
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maze, hero, = self.maze, self.hero
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lines = deque(['{0} {4} {5} {1} {2:d} {3:d}'.format(
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COLORS[hero.get_color()], deg(self.hero.angle),
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hero.next_strike <= 0, hero.next_heal <= 0,
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*self.expos(maze.x, maze.y))])
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walls = [[1 if maze.map[x][y] == WALL else 0 for x in maze.rangex]
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for y in maze.rangey] if maze.next_move <= 0 else []
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ne = nb = 0
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for enemy in maze.enemies:
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if not enemy.awake and walls:
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walls[enemy.y-maze.rangey[0]][enemy.x-maze.rangex[0]] = WALL
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continue
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# Check Chameleons
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elif getattr(enemy, 'visible', 1) <= 0 and maze.next_move <= 0:
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continue
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lines.append('{0} {2} {3} {1:.0f}'.format(
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COLORS[enemy.get_color()], deg(enemy.angle),
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*self.expos(*enemy.get_pos())))
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ne += 1
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for bullet in maze.bullets:
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x, y = self.expos(bullet.x, bullet.y)
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color, angle = COLORS[bullet.get_color()], deg(bullet.angle)
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if color != '0':
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lines.append('{} {} {} {:.0f}'.format(color, x, y, angle))
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nb += 1
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if walls: lines.appendleft('\n'.join(''.join(str(cell) for cell in row)
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for row in walls))
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lines.appendleft('{} {} {} {}'.format(len(walls), ne, nb,
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maze.get_score()))
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return '\n'.join(lines).encode()
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def update(self):
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"""Draw and handle meta events on Pygame window.
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Return False if QUIT event is captured, True otherwise.
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"""
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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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return False
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elif event.type == VIDEORESIZE:
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self.maze.resize((event.w, event.h))
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elif event.type == KEYDOWN and not self.server:
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if event.key == self.key['new']:
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self.maze.reinit()
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elif event.key == self.key['pause'] and not self.hero.dead:
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self.paused ^= True
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elif event.key == self.key['mute']:
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if pygame.mixer.get_init() is None:
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pygame.mixer.init(frequency=44100)
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pygame.mixer.music.load(MUSIC)
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pygame.mixer.music.set_volume(self.musicvol)
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pygame.mixer.music.play(-1)
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else:
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pygame.mixer.quit()
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# Compare current FPS with the average of the last 10 frames
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new_fps = self.clock.get_fps()
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if new_fps < self.fps:
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self.fps -= 1
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elif self.fps < self.max_fps and not self.paused:
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self.fps += 5
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if not self.paused: self.maze.update(self.fps)
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if not self.headless: self.maze.draw()
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self.clock.tick(self.fps)
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return True
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def move(self, x, y):
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"""Command the hero to move faster in the given direction."""
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maze = self.maze
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velocity = maze.distance * HERO_SPEED / self.fps
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accel = velocity * HERO_SPEED / self.fps
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if x == y == 0:
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maze.set_step()
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x, y = maze.stepx, maze.stepy
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else:
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x, y = -x, -y # or move the maze in the reverse direction
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if maze.next_move > 0 or not x:
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maze.vx -= sign(maze.vx) * accel
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if abs(maze.vx) < accel * 2: maze.vx = 0.0
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elif x * maze.vx < 0:
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maze.vx += x * 2 * accel
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else:
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maze.vx += x * accel
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if abs(maze.vx) > velocity: maze.vx = x * velocity
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if maze.next_move > 0 or not y:
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maze.vy -= sign(maze.vy) * accel
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if abs(maze.vy) < accel * 2: maze.vy = 0.0
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elif y * maze.vy < 0:
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maze.vy += y * 2 * accel
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else:
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maze.vy += y * accel
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if abs(maze.vy) > velocity: maze.vy = y * velocity
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def control(self, x, y, angle, firing, slashing):
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"""Control how the hero move and attack."""
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self.move(x, y)
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self.hero.update_angle(angle)
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self.hero.firing = firing
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self.hero.slashing = slashing
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def remote_control(self):
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"""Handle remote control though socket server.
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This function is supposed to be run in a Thread.
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"""
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clock = Clock()
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while True:
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connection, address = self.server.accept()
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connection.settimeout(self.timeout)
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time = get_ticks()
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print('[{}] Connected to {}:{}'.format(time, *address))
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self.maze.reinit()
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while True:
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if self.hero.dead:
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connection.send('0000000'.encode())
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break
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data = self.export()
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connection.send('{:07}'.format(len(data)).encode())
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connection.send(data)
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try:
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buf = connection.recv(7)
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except: # client is closed or timed out
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break
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if not buf: break
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try:
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move, angle, attack = map(int, buf.decode().split())
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except ValueError: # invalid input
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break
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y, x = (i - 1 for i in divmod(move, 3))
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self.sockinp = x, y, radians(angle), attack & 1, attack >> 1
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clock.tick(self.fps)
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self.sockinp = 0, 0, -pi * 3 / 4, 0, 0
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new_time = get_ticks()
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print('[{0}] {3}:{4} scored {1} points in {2}ms'.format(
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new_time, self.maze.get_score(), new_time - time, *address))
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connection.close()
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if not self.hero.dead: self.maze.lose()
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def user_control(self):
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"""Handle direct control from user's mouse and keyboard."""
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if not self.hero.dead:
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keys = pygame.key.get_pressed()
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right = keys[self.key['right']] - keys[self.key['left']]
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down = keys[self.key['down']] - keys[self.key['up']]
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buttons = pygame.mouse.get_pressed()
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try:
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autove = keys[self.key['autove']]
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except KeyError:
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autove = buttons[self.mouse['autove']]
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try:
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firing = keys[self.key['shot']]
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except KeyError:
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firing = buttons[self.mouse['shot']]
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try:
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slashing = keys[self.key['slash']]
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except KeyError:
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slashing = buttons[self.mouse['slash']]
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# Follow the mouse cursor
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x, y = pygame.mouse.get_pos()
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maze = self.maze
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if right or down:
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maze.destx = maze.desty = MIDDLE
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maze.stepx = maze.stepy = 0
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elif autove:
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maze.destx = MIDDLE + round2((x-maze.centerx) / maze.distance)
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maze.desty = MIDDLE + round2((y-maze.centery) / maze.distance)
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maze.set_step(lambda x: maze.rangex[0] <= x <= maze.rangex[-1],
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lambda y: maze.rangey[0] <= y <= maze.rangey[-1])
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if maze.stepx == maze.stepy == 0:
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maze.destx = maze.desty = MIDDLE
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angle = atan2(y - self.hero.y, x - self.hero.x)
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self.control(right, down, angle, firing, slashing)
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def __exit__(self, exc_type, exc_value, traceback):
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if self.server is not None: self.server.close()
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pygame.quit()
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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()
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# Parse command-line arguments
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parser = ArgumentParser(usage='%(prog)s [options]',
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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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'--write-config', nargs='?', const=stdout, type=FileType('w'),
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metavar='PATH', dest='defaultcfg',
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help='write default config and exit, if PATH not specified use stdout')
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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.size))
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parser.add_argument(
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'-f', '--max-fps', type=int, metavar='FPS',
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help='the desired maximum FPS (fallback: {})'.format(config.max_fps))
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parser.add_argument(
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'--mute', '-m', action='store_true', default=None, dest='muted',
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help='mute all sounds (fallback: {})'.format(config.muted))
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parser.add_argument('--unmute', action='store_false', dest='muted',
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help='unmute sound')
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parser.add_argument(
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'--music-volume', type=float, metavar='VOL', dest='musicvol',
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help='between 0.0 and 1.0 (fallback: {})'.format(config.musicvol))
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parser.add_argument(
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'--server', action='store_true', default=None,
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help='enable server (fallback: {})'.format(config.server))
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parser.add_argument('--no-server', action='store_false', dest='server',
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help='disable server')
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parser.add_argument(
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'--host', help='host to bind server to (fallback: {})'.format(
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config.host))
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parser.add_argument(
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'--port', type=int,
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help='port for server to listen on (fallback: {})'.format(config.port))
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parser.add_argument(
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'-t', '--timeout', type=float,
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help='socket operations timeout in seconds (fallback: {})'.format(
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config.timeout))
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parser.add_argument(
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'--head', action='store_false', default=None, dest='headless',
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help='run server with graphics and sound (fallback: {})'.format(
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not config.headless))
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parser.add_argument('--headless', action='store_true',
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help='run server without graphics or sound')
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args = parser.parse_args()
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if args.defaultcfg is not None:
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with open(SETTINGS) as settings: args.defaultcfg.write(settings.read())
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args.defaultcfg.close()
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exit()
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# Manipulate config
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if args.config:
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config.config.read(args.config)
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config.parse()
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config.read_args(args)
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# Main loop
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with Game(config) as game:
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if config.server:
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socket_thread = Thread(target=game.remote_control)
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socket_thread.daemon = True # make it disposable
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socket_thread.start()
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while game.update(): game.control(*game.sockinp)
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else:
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while game.update(): game.user_control()
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