python编程：外星人入侵（所有源码）
第一次发博客，有点紧张，完全不知道怎么写。所有代码全部都是全的哈，可以直接下载哈
先上效果图：
手把手照着书上的代码敲完了，效果图如上：
这是alien_invasion.py的全部代码。（ps:每个文件名字需要注意一下，不要写错了）
import sys
import pygame
from pygame.sprite import Group
from settings import Settings
from game_stats import GameStats
from scoreboard import Scoreboard
from button import Button
from ship import Ship
from alien import Alien
import game_functions as gf
def run_game():
#初始化pygame设置和屏幕对象
pygame.init()
ai_settings = Settings()
screen = pygame.display.set_mode((ai_settings.screen_width,ai_settings.screen_height))
pygame.display.set_caption("Alien Invasion")
play_button = Button(ai_settings,screen,"Play")
stats = GameStats(ai_settings)
sb = Scoreboard(ai_settings,screen,stats)
#创建一艘飞船
ship = Ship(ai_settings,screen)
bullets = Group()
aliens = Group()
gf.create_fleet(ai_settings,screen,ship,aliens)
#开始游戏的主循环
while True:
#监视鼠标和键盘事件
gf.check_events(ai_settings,screen,stats,sb,play_button,ship,aliens,bullets)
if stats.game_active:
ship.update()
gf.update_bullets(ai_settings,screen,stats,sb,ship,aliens,bullets)
gf.update_aliens(ai_settings,screen,stats,sb,ship,aliens,bullets)
# 每次循环时都重绘屏幕
gf.update_screen(ai_settings,screen,stats,sb,ship,aliens,bullets,play_button)
run_game()不多说，全是干货，game_stats.py
class GameStats():
def __init__(self,ai_settings):
self.ai_settings = ai_settings
self.reset_stats()
self.game_active = False
self.high_score = 0
def reset_stats(self):
self.ships_left = self.ai_settings.ship_limit
self.score = 0
self.level = 1
scoreboard.py代码如下：
import pygame.font
from pygame.sprite import Group
from ship import Ship
class Scoreboard():
def __init__(self,ai_settings,screen,stats):
self.screen = screen
self.screen_rect = screen.get_rect()
self.ai_settings = ai_settings
self.stats = stats
self.text_color = (30,30,30)
self.font = pygame.font.SysFont(None,48)
self.prep_score()
self.prep_high_score()
self.prep_level()
self.prep_ships()
def prep_score(self):
rounded_score = int(round(self.stats.score,-1))
score_str = "{:,}".format(rounded_score)
self.score_image = self.font.render(score_str,True,self.text_color,self.ai_settings.bg_color)
self.score_rect = self.score_image.get_rect()
self.score_rect.right = self.screen_rect.right - 20
self.score_rect.top = 20
def show_score(self):
self.screen.blit(self.score_image,self.score_rect)
self.screen.blit(self.high_score_image,self.high_score_rect)
self.screen.blit(self.level_image,self.level_rect)
self.ships.draw(self.screen)
def prep_high_score(self):
high_score = int(round(self.stats.high_score,-1))
high_score_str = "{:,}".format(high_score)
self.high_score_image = self.font.render(high_score_str,True,self.text_color,self.ai_settings.bg_color)
self.high_score_rect = self.high_score_image.get_rect()
self.high_score_rect.centerx = self.screen_rect.centerx
self.high_score_rect.top = self.score_rect.top
def prep_level(self):
self.level_image = self.font.render(str(self.stats.level),True,self.text_color,self.ai_settings.bg_color)
self.level_rect = self.level_image.get_rect()
self.level_rect.right = self.score_rect.right
self.level_rect.top = self.score_rect.bottom + 10
def prep_ships(self):
self.ships = Group()
for ship_number in range(self.stats.ships_left):
ship = Ship(self.ai_settings,self.screen)
ship.rect.x = 10 + ship_number * ship.rect.width
ship.rect.y = 10
self.ships.add(ship)button.py
import pygame.font
class Button():
def __init__(self,ai_settings,screen,msg):
self.screen = screen
self.screen_rect = screen.get_rect()
self.width,self.height = 200,50
self.button_color = (0,255,0)
self.text_color = (255,255,255)
self.font = pygame.font.SysFont(None,48)
self.rect = pygame.Rect(0,0,self.width,self.height)
self.rect.center = self.screen_rect.center
self.prep_msg(msg)
def prep_msg(self,msg):
self.msg_image = self.font.render(msg,True,self.text_color,self.button_color)
self.msg_image_rect = self.msg_image.get_rect()
self.msg_image_rect.center = self.rect.center
def draw_button(self):
self.screen.fill(self.button_color,self.rect)
self.screen.blit(self.msg_image,self.msg_image_rect)alien.py
import pygame
from pygame.sprite import Sprite
class Alien(Sprite):
def __init__(self,ai_settings,screen):
super(Alien, self).__init__()
self.screen = screen
self.ai_settings = ai_settings
self.image = pygame.image.load(r"\alien.bmp")
self.rect = self.image.get_rect()
self.rect.x = self.rect.width
self.rect.y = self.rect.height
self.x = float(self.rect.x)
def blitme(self):
self.screen.blit(self.image,self.rect)
def check_edges(self):
screen_rect = self.screen.get_rect()
if self.rect.right >= screen_rect.right:
return True
elif self.rect.left <=0:
return True
def update(self):
self.x += (self.ai_settings.alien_speed_factor * self.ai_settings.fleet_direction)
self.rect.x = self.xgame_function.py
import sys
from time import sleep
import pygame
from bullet import Bullet
from alien import Alien
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:
fire_bullet(ai_settings,screen,ship,bullets)
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)
def check_keyup_events(event,ship):
if event.key == pygame.K_RIGHT:
# 向右移动飞船
ship.moving_right = False
elif event.key == pygame.K_LEFT:
ship.moving_left = False
def check_events(ai_settings,screen,stats,sb,play_button,ship,aliens,bullets):
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.MOUSEBUTTONDOWN:
mouse_x,mouse_y = pygame.mouse.get_pos()
check_play_button(ai_settings,screen,stats,sb,play_button,ship,aliens,bullets,mouse_x,mouse_y)
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 check_play_button(ai_settings,screen,stats,sb,play_button,ship,aliens,bullets,mouse_x,mouse_y):
button_cliked = play_button.rect.collidepoint(mouse_x,mouse_y)
if button_cliked and not stats.game_active:
ai_settings.initialize_dynamic_settings()
pygame.mouse.set_visible(False)
stats.reset_stats()
stats.game_active = True
sb.prep_score()
sb.prep_high_score()
sb.prep_level()
sb.prep_ships()
aliens.empty()
bullets.empty()
create_fleet(ai_settings,screen,ship,aliens)
ship.center_ship()
def update_screen(ai_settings,screen,stats,sb,ship,aliens,bullets,play_button):
"""更新屏幕上的图像"""
screen.fill(ai_settings.bg_color)
for bullet in bullets.sprites():
bullet.draw_bullet()
ship.blitme()
aliens.draw(screen)
sb.show_score()
if not stats.game_active:
play_button.draw_button()
# 让最近绘制的屏幕可见
pygame.display.flip()
def update_bullets(ai_settings,screen,stats,sb,ship,aliens,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)
check_bulet_alien_collisions(ai_settings,screen,stats,sb,ship,aliens,bullets)
def check_bulet_alien_collisions(ai_settings,screen,stats,sb,ship,aliens,bullets):
collisions = pygame.sprite.groupcollide(bullets, aliens, True, True)
if collisions:
for aliens in collisions.values():
stats.score += ai_settings.alien_points * len(aliens)
sb.prep_score()
check_high_score(stats,sb)
if len(aliens) == 0:
bullets.empty()
ai_settings.increase_speed()
stats.level += 1
sb.prep_level()
create_fleet(ai_settings,screen,ship,aliens)
def get_number_aliens_x(ai_settings,alien_width):
available_space_x = ai_settings.screen_width - 2 * alien_width
number_aliens_x = int(available_space_x / (2 * alien_width))
return number_aliens_x
def creat_alien(ai_settings,screen,aliens,alien_number,row_number):
alien = Alien(ai_settings, screen)
alien_width = alien.rect.width
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
aliens.add(alien)
def create_fleet(ai_settings,screen,ship,aliens):
alien = Alien(ai_settings,screen)
number_aliens_x = get_number_aliens_x(ai_settings,alien.rect.width)
number_rows = get_number_rows(ai_settings,ship.rect.height,alien.rect.height)
for row_number in range(number_rows):
for alien_number in range(number_aliens_x):
creat_alien(ai_settings,screen,aliens,alien_number,row_number)
def get_number_rows(ai_settings,ship_height,alien_height):
available_space_y = (ai_settings.screen_height - (3*alien_height) - ship_height)
number_rows = int(available_space_y /(2*alien_height))
return number_rows
def update_aliens(ai_settings,screen,stats,sb,ship,aliens,bullets):
check_fleet_edgs(ai_settings,aliens)
aliens.update()
if pygame.sprite.spritecollideany(ship,aliens):
ship_hit(ai_settings,screen,stats,sb,ship,aliens,bullets)
check_aliens_bottom(ai_settings,screen,stats,sb,ship,aliens,bullets)
def check_fleet_edgs(ai_settings,aliens):
for alien in aliens.sprites():
if alien.check_edges():
change_fleet_direction(ai_settings,aliens)
break
def change_fleet_direction(ai_settings,aliens):
for alien in aliens.sprites():
alien.rect.y += ai_settings.fleet_drop_speed
ai_settings.fleet_direction *= -1
def ship_hit(ai_settings,screen,stats,sb,ship,aliens,bullets):
if stats.ships_left >0:
stats.ships_left -= 1
sb.prep_ships()
aliens.empty()
bullets.empty()
create_fleet(ai_settings,screen,ship,aliens)
ship.center_ship()
sleep(0.5)
else:
stats.game_active = False
pygame.mouse.set_visible(False)
def check_aliens_bottom(ai_settings,screen,stats,sb,ship,aliens,bullets):
screen_rect = screen.get_rect()
for alien in aliens.sprites():
if alien.rect.bottom >= screen_rect.bottom:
ship_hit(ai_settings,screen,stats,sb,ship,aliens,bullets)
break
def check_high_score(stats,sb):
if stats.score > stats.high_score:
stats.high_score = stats.score
sb.prep_high_score()ship.py
import pygame
from pygame.sprite import Sprite
class Ship(Sprite):
def __init__(self,ai_settings,screen):
"""初始化飞船并设置其初始位置"""
super().__init__()
self.screen = screen
self.ai_settings = ai_settings
# 加载飞船图像并湖区其外界矩形
self.image = pygame.image.load(r"\ship.bmp")
self.rect = self.image.get_rect()
self.screen_rect = screen.get_rect()
self.rect.centerx = self.screen_rect.centerx
self.rect.bottom = self.screen_rect.bottom
self.center = float(self.rect.centerx)
# 移动标志
self.moving_right = False
self.moving_left = False
def update(self):
"""根据移动标志调整船的位置"""
if self.moving_right and self.rect.right < self.screen_rect.right:
self.center += self.ai_settings.ship_speed_factor
if self.moving_left and self.rect.left > 0:
self.center -= self.ai_settings.ship_speed_factor
self.rect.centerx = self.center
def blitme(self):
"""在指定位置绘制飞船"""
self.screen.blit(self.image,self.rect)
def center_ship(self):
self.center = self.screen_rect.centerxsettings.py
class Settings():
"""存储外星人的所有设置的类"""
def __init__(self):
"""初始化游戏的设置"""
#屏幕设置
self.screen_width = 1200
self.screen_height = 600
self.bg_color = (230,230,230)
#飞船速度
self.ship_limit = 3
#子弹
self.bullet_width = 500
self.bullet_height = 15
self.bullet_color = 60,60,60
self.bullets_allowed = 3
# 外星人设置
self.fleet_drop_speed = 10
self.speedup_scale = 1.1
self.score_scale = 1.5
self.initialize_dynamic_settings()
def initialize_dynamic_settings(self):
self.ship_speed_factor = 1.5
self.bullet_speed_factor = 3
self.alien_speed_factor = 1
self.fleet_direction = 1
self.alien_points = 50
def increase_speed(self):
self.ship_speed_factor *= self.speedup_scale
self.bullet_speed_factor *= self.speedup_scale
self.alien_speed_factor *= self.speedup_scale
self.alien_points = int(self.alien_points*self.score_scale)
print(self.alien_points)
bullet.py
import pygame
from pygame.sprite import Sprite
class Bullet(Sprite):
def __init__(self,ai_settings,screen,ship):
super().__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
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
self.rect.y = self.y
def draw_bullet(self):
pygame.draw.rect(self.screen,self.color,self.rect)
