165 lines
5.2 KiB
Python
165 lines
5.2 KiB
Python
import sys
|
|
from time import sleep
|
|
|
|
import pygame
|
|
|
|
from settings import Settings
|
|
from game_stats import GameStats
|
|
from scoreboard import Scoreboard
|
|
from button import Button
|
|
from ship import Ship
|
|
from bullet import Bullet
|
|
from alien import Alien
|
|
|
|
class AlienInvasion:
|
|
"""管理游戏资源和行为的类"""
|
|
|
|
def __init__(self):
|
|
"""初始化游戏并创建游戏资源"""
|
|
pygame.init()
|
|
self.settings = Settings()
|
|
|
|
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")
|
|
|
|
# 创建一个用于存储游戏统计信息的实例
|
|
# 并创建记分牌
|
|
self.stats = GameStats(self)
|
|
self.sb = Scoreboard(self)
|
|
|
|
self.ship = Ship(self)
|
|
self.bullets = pygame.sprite.Group()
|
|
self.aliens = pygame.sprite.Group()
|
|
|
|
self._create_fleet()
|
|
|
|
# 创建Play按钮
|
|
self.play_button = Button(self,"Play")
|
|
|
|
# 设置背景色
|
|
self.bg_color = (230, 230, 230)
|
|
|
|
# 背景音乐
|
|
pygame.mixer.music.load('music/music1.mp3')
|
|
pygame.mixer.music.play(-1) # 重复循环
|
|
|
|
def _create_fleet(self):
|
|
"""创建外星人群"""
|
|
# 创建一个外星人并计算一行可容纳多少外星人
|
|
# 外星人的间距为外星人的宽度
|
|
alien = Alien(self)
|
|
alien_width,alien_height = alien.rect.size
|
|
available_space_x = self.settings.screen_width - (2 * alien_width)
|
|
number_aliens_x = available_space_x // (2 * alien_width)
|
|
|
|
# 计算屏幕可容纳多少行外星人
|
|
ship_height = self.ship.rect.height
|
|
available_space_y = (self.settings.screen_height -
|
|
(3 * alien_height) - ship_height)
|
|
number_rows = available_space_y // (2 * alien_height)
|
|
|
|
# 创建外星人群
|
|
for row_number in range(number_rows):
|
|
for alien_number in range(number_aliens_x):
|
|
self._create_alien(alien_number, row_number)
|
|
|
|
def _create_alien(self, alien_number, row_number):
|
|
"""创建一个外星人并将其放在当前行"""
|
|
alien = Alien(self)
|
|
alien_width,alien_height = alien.rect.size
|
|
alien.x = alien_width + 2 * alien_width * alien_number
|
|
alien.rect.x = alien.x
|
|
alien.rect.y = alien.rect.height + 2 * alien.rect.height * row_number
|
|
self.aliens.add(alien)
|
|
|
|
def run_game(self):
|
|
"""开始游戏的主循环"""
|
|
while True:
|
|
self._check_events()
|
|
self.ship.update()
|
|
|
|
if self.stats.game_active:
|
|
self.ship.update()
|
|
self._update_bullets()
|
|
self._update_aliens()
|
|
|
|
self._update_screen()
|
|
# 监视键盘和鼠标事件
|
|
|
|
def _update_aliens(self):
|
|
"""
|
|
检查是否有外星人位于屏幕边缘
|
|
并更新整群外星人的位置
|
|
"""
|
|
self._check_fleet_edges()
|
|
self.aliens.update()
|
|
|
|
# 检测外星人和飞船之间的碰撞
|
|
if pygame.sprite.spritecollideany(self.ship, self.aliens):
|
|
self._ship_hit()
|
|
|
|
# 检查是否有外星人到达了屏幕底端
|
|
self._check_aliens_bottom()
|
|
|
|
def _update_bullets(self):
|
|
"""更新子弹的位置并删除消失的子弹"""
|
|
#更新子弹的位置
|
|
self.bullets.update()
|
|
|
|
# 删除消失的子弹
|
|
for bullet in self.bullets.copy():
|
|
if bullet.rect.bottom <= 0:
|
|
self.bullets.remove(bullet)
|
|
|
|
self._check_bullet_alien_collisions()
|
|
|
|
def _check_bullet_alien_collisions(self):
|
|
"""响应子弹和外星人碰撞"""
|
|
# 删除发生碰撞的子弹和外星人
|
|
|
|
collisions = pygame.sprite.groupcollide(
|
|
self.bullets, self.aliens, True, True)
|
|
if collisions:
|
|
for aliens in collisions.values():
|
|
self.stats.score += self.settings.alien_points * len(aliens)
|
|
self.sb.prep_score()
|
|
|
|
if not self.aliens:
|
|
# 删除现有的子弹并新建一群外星人
|
|
self.bullets.empty()
|
|
self._create_fleet()
|
|
self.settings.increase_speed()
|
|
|
|
# 提高等级
|
|
self.stats.level += 1
|
|
self.sb.prep_level()
|
|
|
|
def _check_events(self):
|
|
for event in pygame.event.get():
|
|
if event.type == pygame.QUIT:
|
|
sys.exit()
|
|
|
|
elif event.type == pygame.KEYDOWN:
|
|
if event.key == pygame.K_RIGHT:
|
|
self.ship.moving_right = True
|
|
elif event.key == pygame.K_LEFT:
|
|
self.ship.moving_left = True
|
|
|
|
elif event.type == pygame.KEYUP:
|
|
if event.key == pygame.K_RIGHT:
|
|
self.ship.moving_right = False
|
|
elif event.key == pygame.K_LEFT:
|
|
self.ship.moving_left = False
|
|
|
|
def _update_screen(self):
|
|
self.screen.fill(self.settings.bg_color) # 每次循环时都重绘屏幕
|
|
self.ship.blitme()
|
|
|
|
# 让最近绘制的屏幕可见
|
|
pygame.display.flip()
|
|
|
|
if __name__ == '__main__': # 创建游戏实例并运行游戏
|
|
ai = AlienInvasion()
|
|
ai.run_game() |