Python编程-外星人入侵：第12章-武装飞船
开始游戏项目
创建Pygame 窗口以及响应用户输入
alien_invasion.py
import sys
import pygame
from setting import Setting
class AlienInvasion:
"""Classes for managing game resources and behaviors"""
def __init__(self):
"""Initialize the game and create game assets. """
pygame.init()
self.settings = Setting()
self.screen = pygame.display.set_mode((self.settings.screen_with, self.settings.screen_heith))
pygame.display.set_caption("Alien Invasion")
def run_game(self):
"""Start the main loop of the game. """
while True:
# Monitor keyboard and mouse events.
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
# Make the most recently drawn screen visible.
# The screen is redrawn each time through the loop.
self.screen.fill(self.settings.bg_color)
pygame.display.flip()
if __name__ == '__main__':
# Create a game instance and run the game.
ai = AlienInvasion()
ai.run_game()
class Setting:
"""A class that stores all settings in the game Alien Invasion. """
def __init__(self):
"""Initialize the game's settings. """
# screen settings.
self.screen_with = 800
self.screen_heith = 500
self.bg_color=(230, 230, 230)
添加飞船图像
类
import pygame
from _class.setting import Setting
class Ship:
"""管理飞船的类"""
def __init__(self, ai_game):
pygame.init()
"""初始化飞船并设置其初始位置"""
self.screen = ai_game.screen
self.settings = Setting()
self.screen_rect = ai_game.screen.get_rect()
# Load the spaceship image and get its bounding rectangle.
self.image = pygame.image.load('images/ship.bmp')
self.rect = self.image.get_rect()
# For each new ship, center it at the bottom of the screen.
self.rect.midbottom = self.screen_rect.midbottom
self.x = float(self.rect.x)
self.y = float(self.rect.y)
# Mobile sign.
self.moving_up = False
self.moving_down = False
self.moving_right = False
self.moving_left = False
def update(self):
"""Adjust the position of the ship according to the moving flag. """
if self.moving_right and self.rect.right < self.screen_rect.right:
self.x += self.settings.ship_speed
if self.moving_left and self.rect.left > 0:
self.x -= self.settings.ship_speed
self.rect.x = self.x
if self.moving_up and self.rect.top > 0:
self.y -= self.settings.ship_speed
if self.moving_down and self.rect.bottom < self.screen_rect.bottom:
self.y += self.settings.ship_speed
self.rect.y = self.y
def blitme(self):
"""在指定位置绘制飞船"""
self.screen.blit(self.image, self.rect)
class Setting:
"""A class that stores all settings in the game Alien Invasion. """
def __init__(self):
"""Initialize the game's settings. """
# screen settings.
self.screen_with = 800
self.screen_heith = 500
self.bg_color=(137, 214, 255)
self.ship_speed = 1.5
alien_invasion.py
import sys
import pygame
from _class.setting import Setting
from _class.ship import Ship
class AlienInvasion:
"""Classes for managing game resources and behaviors"""
def __init__(self):
"""Initialize the game and create game assets. """
pygame.init()
self.settings = Setting()
# self.screen = pygame.display.set_mode((self.settings.screen_with, self.settings.screen_heith))
self.screen = pygame.display.set_mode((0, 0), pygame.FULLSCREEN)
self.settings.screen_width = self.screen.get_rect().width
self.settings.screen_height = self.screen.get_rect().height
pygame.display.set_caption("Alien Invasion")
self.ship = Ship(self)
def _update_screen(self):
self.screen.fill(self.settings.bg_color)
self.ship.blitme()
def _check_event(self):
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.KEYDOWN:
self._check_keydown_events(event)
elif event.type == pygame.KEYUP:
self._check_keyup_events(event)
def _check_keydown_events(self, event):
if event.key == pygame.K_RIGHT:
self.ship.moving_right = True
elif event.key == pygame.K_LEFT:
self.ship.moving_left = True
elif event.key == pygame.K_UP:
self.ship.moving_up = True
elif event.key == pygame.K_DOWN:
self.ship.moving_down = True
elif event.key == pygame.K_q:
sys.exit()
def _check_keyup_events(self, event):
if event.key == pygame.K_RIGHT:
self.ship.moving_right = False
if event.key == pygame.K_LEFT:
self.ship.moving_left = False
if event.key == pygame.K_UP:
self.ship.moving_up = False
if event.key == pygame.K_DOWN:
self.ship.moving_down = False
def run_game(self):
"""Start the main loop of the game. """
while True:
self._check_event()
self.ship.update()
self._update_screen()
pygame.display.flip()
images
调用
from _class.alien_invasion import AlienInvasion
ai = AlienInvasion()
ai.run_game()