AlienInvasion.py 1 """ 2 BlackAlien名称是因为飞船是黑色的 3 该文件是alien invasion的主程序 4 """ 5 6 from settings import Settings 7 from ship import Ship 8 from game_function import * 9 from pygame.sprite import Group 10 from bullet import * 11 from game_stats import GameStats 12 13 14 def run_game(): 15 pygame.init() 16 settings = Settings() 17 screen = pygame.display.set_mode((settings.screen_width, settings.screen_height)) 18 ship = Ship(screen) 19 bullets = Group() 20 aliens = Group() 21 stats = GameStats(settings) 22 23 pygame.display.set_caption(‘Alien invasion‘) 24 screen.fill(settings.screen_bg_color) 25 create_fleet(settings, screen, aliens, ship) 26 27 while True: 28 check_events(settings, screen, ship, bullets) 29 30 if stats.game_active: 31 ship.update_ship(settings) 32 update_bullets(bullets, aliens, settings, screen, ship) 33 update_screen(settings, screen, ship, bullets, aliens) 34 update_aliens(settings, aliens, ship, stats, bullets, screen) 35 bullets.update() 36 37 run_game()
alien.py 1 import pygame 2 from pygame.sprite import Sprite 3 4 5 class Alien(Sprite): 6 """ 7 创建的外星人的类 8 """ 9 10 def __init__(self, ai_setting, screen): 11 super().__init__() 12 13 self.screen = screen 14 self.ai_setting = ai_setting 15 16 # 加载图像 17 self.image = pygame.image.load(‘images/alien.png‘) 18 self.rect = self.image.get_rect() 19 20 # 设置外星人的位置 21 self.rect.x = self.ai_setting.screen_width - self.rect.width*2 22 self.rect.y = self.rect.height 23 # rect(self.rect.height, self.rect.width) 24 25 def blitme(self): 26 self.screen.blit(self.image, self.rect) 27 28 def check_edges(self): 29 """ 30 检查alien是否碰触到屏幕的边缘 31 :return: 32 """ 33 screen_rect = self.screen.get_rect() 34 if self.rect.top <= 0: 35 return True 36 elif self.rect.bottom >= screen_rect.bottom: 37 return True 38 39 def update(self): 40 self.rect.y += self.ai_setting.alien_move_speed_factor * self.ai_setting.fleet_move_direction
bullet.py 1 """ 2 定义bullte对象,通过调用Sprite 3 """ 4 import pygame 5 from pygame.sprite import Sprite 6 7 8 class Bullet(Sprite): 9 def __init__(self, ai_settings, screen, ship): 10 super().__init__() 11 self.screen = screen 12 13 # 先创建一个子弹，然后放到固定的位置 14 self.rect = pygame.Rect(0, 0, ai_settings.bullet_width, ai_settings.bullet_height) 15 self.rect.centery = ship.rect.centery 16 self.rect.left = ship.rect.right 17 self.color = ai_settings.bullet_color 18 self.speed_factor = ai_settings.bullet_speed_factor 19 20 def update(self): 21 """ 22 更新子弹的位置 23 :return: 0 24 """ 25 self.rect.x += self.speed_factor 26 27 def draw_bullet(self): 28 pygame.draw.rect(self.screen, self.color, self.rect)
game_function.py 1 import pygame
2 import sys
3 from bullet import Bullet
4 from alien import Alien
5 from time import sleep
6
7
8 """用于执行游戏的功能
9 1.用于检测按键事件，按上键向上边移动，按下键向下边移动
10 2.防止飞船移动出主窗口；
11 3.可以设置飞船的移动速度；
12 """
13
14
15 def check_events(ai_settings, screen, ship, bullets):
16 for event in pygame.event.get():
17 # 通过循环来不停获取事件
18
19 # 1.退出的情况
20 if event.type == pygame.QUIT:
21 sys.exit()
22 # 2.按下按键的情况
23 elif event.type == pygame.KEYDOWN:
24 check_key_down(event, ai_settings, screen, ship, bullets)
25 # 3.按键弹起来的情况
26 elif event.type == pygame.KEYUP:
27 check_key_up(event, ship)
28
29
30 def check_key_down(event, ai_settings, screen, ship, bullets):
31 """处理按下按键的情况"""
32 if event.key == pygame.K_q:
33 sys.exit()
34 elif event.key == pygame.K_UP:
35 ship.up_moving = True
36 elif event.key == pygame.K_DOWN:
37 ship.down_moving = True
38 elif event.key == pygame.K_SPACE:
39 # 创建一个bullet的对象,限制子弹的数量
40 if len(bullets) < ai_settings.bullet_allowed:
41 new_bullet = Bullet(ai_settings, screen, ship)
42 bullets.add(new_bullet)
43
44
45 def check_key_up(event, ship):
46 """处理按键弹起的情况"""
47 if event.key == pygame.K_UP:
48 ship.up_moving = False
49 elif event.key == pygame.K_DOWN:
50 ship.down_moving = False
51
52
53 def update_screen(ai_settings, screen, ship, bullets, aliens):
54 screen.fill(ai_settings.screen_bg_color)
55 ship.blit_black_ship()
56 aliens.draw(screen)
57
58 # 在飞船和外星人后面绘制所有的子弹
59 for bullet in bullets.sprites():
60 bullet.draw_bullet()
61
62 pygame.display.flip()
63
64
65 def update_bullets(bullets, aliens, ai_settings, screen, ship):
66 bullets.update()
67 # 删除已经消失的子弹
68 for bullet in bullets.copy():
69 if bullet.rect.left > ai_settings.screen_width:
70 bullets.remove(bullet)
71
72 check_bullet_alien_collisions(ai_settings, screen, ship, aliens, bullets)
73
74
75 def check_bullet_alien_collisions(ai_settings, screen, ship, aliens, bullets):
76 # 检查是否有子弹击中alien，击中删除两个
77 pygame.sprite.groupcollide(bullets, aliens, True, True)
78
79 # 如果外星人为空，就创建一波新的外星人
80 if len(aliens) == 0:
81 bullets.empty()
82 create_fleet(ai_settings, screen, aliens, ship)
83
84
85 def get_alien_number(ai_settings, alien_height):
86 """
87 获取能够容纳的外星人的个数
88 :param ai_settings:
89 :param alien_height:
90 :return:
91 """
92 available_space_y = ai_settings.screen_height - 2 * alien_height
93 number_alien_y = int(available_space_y / (2 * alien_height))
94 return number_alien_y
95
96
97 def get_alien_row(ai_settings, ship_width, alien_width):
98 """
99 :param ai_settings:
100 :param alien_width:
101 :return: 可以容纳的列=screen_width-ship_width-aline_width*3 (预留2倍的外星人的宽度+右边外星人的宽度)
102 """
103 alien_num_in_row = int((ai_settings.screen_width - ship_width - 15*alien_width)/(2*alien_width))
104 return alien_num_in_row
105
106
107 def create_alien(ai_settings, screen, aliens, alien_number,row):
108 """
109 :param ai_settings:
110 :param screen:
111 :param aliens:
112 :param alien_number
113 :return:
114 """
115 alien = Alien(ai_settings,screen)
116 alien_height = alien.rect.height
117
118 alien.rect.y = alien_height + alien_number*alien.rect.height*2
119
120 # 每次都要更新x 坐标的值
121 alien.rect.x = ai_settings.screen_width - alien.rect.width*row*2
122 aliens.add(alien)
123
124
125 def create_fleet(ai_settings, screen, aliens, ship):
126 """ 创建外星人群"""
127 ‘‘‘创建一个外星人，并且计算可以容纳多少个‘‘‘
128 ‘‘‘外星人间距为外星人的宽度‘‘‘
129 alien = Alien(ai_settings, screen)
130 alien_height = alien.rect.height
131 alien_numbers = get_alien_number(ai_settings, alien_height)
132
133 # 确认可以容纳多少个row的外星人
134 ship_width = ship.rect.width
135 alien_width = alien.rect.width
136 alien_num_in_row = get_alien_row(ai_settings, ship_width, alien_width)
137 # print("可用的row",alien_num_in_row,sep=‘ | ‘)
138
139 for row in range(1, alien_num_in_row+1):
140 for alien_number in range(alien_numbers):
141 create_alien(ai_settings, screen, aliens, alien_number, row)
142
143
144 def check_fleet_edges(ai_settings, aliens):
145 """
146 检查fleet中是否有超过screen的，如果只要有一个就改变整个队列的方向
147 :return:
148 """
149 for alien in aliens.sprites():
150 if alien.check_edges():
151 change_fleet_direction(ai_settings, aliens)
152 break
153
154
155 def change_fleet_direction(ai_settings, aliens):
156 ai_settings.fleet_move_direction *= -1
157
158 # 向下移动一格
159 for alien in aliens.sprites():
160 alien.rect.x -= ai_settings.alien_drop_speed_factor
161
162
163 def update_aliens(ai_settings, aliens, ship, stats, bullets, screen):
164 if check_fleet_edges(ai_settings, aliens):
165 change_fleet_direction(ai_settings, aliens)
166
167 ship_hit(ai_settings, ship, stats, bullets, screen, aliens)
168
169
170 def ship_hit(ai_settings, ship, stats, bullets, screen, aliens):
171 aliens.update()
172
173 # 检测外星人是否和飞船相撞,以及是否到达了底部
174 if pygame.sprite.spritecollideany(ship, aliens) or check_aliens_reach_bottom(aliens, screen):
175 stats.ship_left -= 1
176 print("Ship hit!!!")
177
178 # 一旦撞上后就清空外星人和子弹，然后重建外星人，并且将飞船放置到中间的位置
179 aliens.empty()
180 bullets.empty()
181 sleep(0.5)
182 ship.rect.y = ai_settings.screen_height/2
183 create_fleet(ai_settings, screen, aliens, ship)
184
185 if stats.ship_left == 0:
186 print("GAME OVER!")
187 stats.game_active = False
188
189
190 def check_aliens_reach_bottom(aliens, screen):
191 """检查飞船是否到达了底部"""
192 screen_rect = screen.get_rect()
193 for alien in aliens.sprites():
194 while alien.rect.left <= screen_rect.left:
195 print("超过范围！")
196 return True
197 else:
198 return False
game_stats.py 1 class GameStats(object): 2 """ 3 用于记录游戏中的各个状态 4 """ 5 6 def __init__(self, ai_settings): 7 self.ai_settings = ai_settings 8 self.ship_left = ai_settings.ship_limit 9 self.reset_stats() 10 self.game_active = True 11 12 def reset_stats(self): 13 """初始化游戏初期的各个参数""" 14 15 self.ship_left = self.ai_settings.ship_limit
settings.py 1 """ 2 This file stores the parameters of all elements. 3 1. screen parameters; 4 2. ship parameters; 5 3. bullet parameters; 6 该类只是用来存储用到的数据 7 """ 8 9 10 class Settings(object): 11 """Store configuration parameters""" 12 13 def __init__(self): 14 # Screen configuration 15 self.caption = ‘Alien invasion‘ 16 self.screen_width = 800 17 self.screen_height = 600 18 self.screen_bg_color = 255, 255, 255 19 self.ship_move_speed = 1.5 20 self.bullet_speed_factor = 2 21 self.bullet_width = 10 22 self.bullet_height = 300 23 self.bullet_color = 255, 0, 0 24 self.bullet_allowed = 3 25 self.alien_move_speed_factor = 1 26 self.fleet_move_direction = 1 27 self.alien_drop_speed_factor = 50 28 self.ship_limit = 3
ship.py 1 """ 2 Description of ship 3 """ 4 import pygame 5 6 7 class Ship(object): 8 """Ship class""" 9 def __init__(self, screen): 10 """Initiate ship""" 11 self.screen = screen 12 self.black_ship_image = pygame.image.load(‘images/black_ship.png‘) # 这里注意路径image前面没有/ 13 # Get screen and ship rect 14 self.rect = self.black_ship_image.get_rect() 15 self.screen_rect = self.screen.get_rect() 16 self.up_moving = False 17 self.down_moving = False 18 19 # Set position of ship 20 self.rect.left = self.screen_rect.left 21 self.rect.centery = self.screen_rect.centery 22 23 # 用于来保存小数 24 self.temp_centery = float(self.screen_rect.centery) 25 26 def blit_black_ship(self): 27 """Display ship on the screen""" 28 self.screen.blit(self.black_ship_image, self.rect) 29 30 def update_ship(self, settings): 31 """用户更新飞船的位置""" 32 if self.up_moving and self.rect.top > 0: 33 self.temp_centery -= float(settings.ship_move_speed) 34 self.rect.centery = self.temp_centery 35 # print(self.rect.centery) 36 37 if self.down_moving and self.rect.bottom < self.screen_rect.bottom: 38 self.temp_centery += float(settings.ship_move_speed) 39 self.rect.centery = self.temp_centery 40 # print(self.rect.centery)
运行的效果如下：
======================================================================================================================
先到这里，后续有空再更新游戏开始、积分等功能 :)
原文地址：https://www.cnblogs.com/yangfan2018/p/9344546.html
时间： 2024-10-16 04:14:04