GitHub：https://github.com/liqingwen2015/play_plane
目前只做了第一部分：一个界面，有个飞机，可以左右移动，放子弹。
暂无计划做第二部分。
alien_invasion.py
import sys import pygame from settings import Settings
from ship import Ship
import game_functions as gf
from pygame.sprite import Group def run_game():
# 初始化游戏并创建一个屏幕对象
pygame.init()
ai_settings = Settings()
screen = pygame.display.set_mode((ai_settings.screen_width, ai_settings.screnn_height))
pygame.display.set_caption('Alien Invasion') # 创建一艘飞船
ship = Ship(ai_settings, screen)
# 创建一个存储的子弹组
bullets = Group() # 设置背景色
bg_color = (230, 230, 230) # 开始游戏的主循环
while True:
gf.check_events(ai_settings, screen, ship, bullets)
ship.update()
gf.update_bullets(bullets)
gf.update_screen(ai_settings, screen, ship, bullets) run_game()
bullet.py
import pygame
from pygame.sprite import Sprite
class Bullet(Sprite):
def __init__(self, ai_settings, screen, ship):
super(Bullet, self).__init__()
self.screen = screen
self.rect = pygame.Rect(0, 0, ai_settings.bullet_width, ai_settings.bullet_height)
self.rect.centerx = ship.rect.centerx
self.rect.top = ship.rect.top
# 存储用小数表示的子弹位置
self.y = float(self.rect.y)
self.color = ai_settings.bullet_color
self.speed_factor = ai_settings.bullet_speed_factor
def update(self):
self.y -= self.speed_factor
# 更新子弹位置
self.rect.y = self.y
def draw_bullet(self):
pygame.draw.rect(self.screen, self.color, self.rect)
game_functions
import sys import pygame from bullet import Bullet def check_events(ai_settings, screen, ship, bullets):
# 监听键盘和鼠标的事件
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.KEYDOWN:
check_keydown_events(event, ai_settings, screen, ship, bullets)
elif event.type == pygame.KEYUP:
check_keyup_events(event, ship) def update_screen(ai_settings, screen, ship, bullets):
# 每次循环时都重绘屏幕
screen.fill(ai_settings.bg_color) # 在飞船和外星人后面重绘所有子弹
for bullet in bullets.sprites():
bullet.draw_bullet() ship.blitme() # 让最近绘制的屏幕可见
pygame.display.flip() def check_keydown_events(event, ai_settings, screen, ship, bullets):
if event.key == pygame.K_RIGHT:
ship.moving_right = True
elif event.key == pygame.K_LEFT:
ship.moving_left = True
elif event.key == pygame.K_SPACE:
# 创建一颗子弹，并将其加入到编组 bullets 中
fire_bullet(ai_settings, screen, ship, bullets) def check_keyup_events(event, ship):
if event.key == pygame.K_RIGHT:
ship.moving_right = False
elif event.key == pygame.K_LEFT:
ship.moving_left = False def update_bullets(bullets):
bullets.update() # 删除已经消失的子弹
for bullet in bullets.copy():
if bullet.rect.bottom <= 0:
bullets.remove(bullet) def fire_bullet(ai_settings, screen, ship, bullets):
if len(bullets) < ai_settings.bullets_allowed:
new_bullet = Bullet(ai_settings, screen, ship)
bullets.add(new_bullet)
settings.py
class Settings():
def __init__(self):
# 屏幕设置
self.screen_width = 1200
self.screnn_height = 800
self.bg_color = (230, 230, 230)
self.ship_speed_factor = 1.5
# 子弹设置
self.bullet_speed_factor = 1
self.bullet_width = 3
self.bullet_height = 15
self.bullet_color = 60, 60, 60
self.bullets_allowed = 5
ship.py
import pygame
class Ship():
def __init__(self, ai_settings, screen):
self.screen = screen
self.ai_settings = ai_settings
# 加载飞船图像并获取其外接矩形
self.image = pygame.image.load('images/ship.bmp')
self.rect = self.image.get_rect()
self.screen_rect = screen.get_rect()
# 将每艘新飞船放在屏幕底部*
self.rect.centerx = self.screen_rect.centerx
self.rect.bottom = self.screen_rect.bottom
# 在飞船的属性 center 中存储小数值
self.center = float(self.rect.centerx)
# 移动标识
self.moving_right = False
self.moving_left = False
def blitme(self):
# 屏幕指定位置绘制飞船
self.screen.blit(self.image, self.rect)
def update(self):
if self.moving_right and self.rect.right < self.screen_rect.right:
self.center += self.ai_settings.ship_speed_factor
elif self.moving_left and self.rect.left > 0:
self.center -= self.ai_settings.ship_speed_factor
# 更新 rect 对象
self.rect.centerx = self.center