Python编程：从入门到实践——【作业】——第十二章（武装飞船）

第十二章

 12-1 蓝色天空 ： 创建一个背景为蓝色的Pygame窗口。
12-2 游戏角色 ： 找一幅你喜欢的游戏角色位图图像或将一幅图像转换为位图。 创建一个类， 将该角色绘制到屏幕中央， 并将该图像的背景色设置为屏幕背景色， 或将
屏幕背景色设置为该图像的背景色。
12-1

import sys
import pygame
def run():
    # 初始化游戏并创建一个屏幕对象
    pygame.init()
    screen = pygame.display.set_mode((800, 600))
    pygame.display.set_caption("Blue Sky")
    # 设置背景色
    bg_color = (0, 124, 195)
    while True:
        screen.fill(bg_color)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
        pygame.display.flip()
run()

输出：

12-2

ship.py

import pygame  
  
class Ship():  
    """docstring for Ship"""  
    def __init__(self, screen):  
        """初始化飞船并设置其初始位置"""  
        self.screen = screen  
        # 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()  
  
        # 将每搜新飞船放在屏幕底部中央  
        self.rect.centerx = self.screen_rect.centerx  
        self.rect.centery = self.screen_rect.centery  
  
    def biltme(self):  
        self.screen.blit(self.image,self.rect)  

run.py

import sys  
import pygame  
from ship import Ship  
def run():  
    pygame.init()  
    screen = pygame.display.set_mode((1200,600))  
    pygame.display.set_caption("Blue Sky")  
  
    bg_color = (0,124,195)  
    s = Ship(screen)  
    while  True:  
        screen.fill(bg_color)  
        s.biltme()  
        for event in pygame.event.get():  
            if event.type == pygame.QUIT:  
                sys.exit()  
        pygame.display.flip()  
run()  

输出：

 文件夹截图

 12-3 火箭 ： 编写一个游戏， 开始时屏幕中央有一个火箭， 而玩家可使用四个方向键上下左右移动火箭。 请务必确保火箭不会移到屏幕外面。
12-4 按键 ： 创建一个程序， 显示一个空屏幕。 在事件循环中， 每当检测到pygame. KEYDOWN 事件时都打印属性event. key 。 运行这个程序， 并按各种键， 看看
Pygame如何响应

12-3

setting.py

class Setting():  
  
    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 = (255,255,255)  
        self.ship_speed_factor = 1.5  

rocket.py

import pygame  
class Rocket():  
    """docstring for Rocket"""  
    def __init__(self,ai_setting, screen):  
        self.screen = screen  
        self.image = pygame.image.load('images/ship.jpg')  
        self.rect = self.image.get_rect()  
        self.screen_rect = screen.get_rect()  
        self.ai_setting = ai_setting  
        self.rect.centerx = self.screen_rect.centerx  
        self.rect.centery = self.screen_rect.centery  
        self.center = float(self.rect.centerx)  
        self.centery = float(self.rect.centery)  
        self.moving_right = False  
        self.moving_left = False  
        self.moving_up = False  
        self.moving_down = False  
    def update(self):  
        if self.moving_right and self.rect.right < self.screen_rect.right:  
            self.center +=self.ai_setting.ship_speed_factor  
        if self.moving_left and self.rect.left > 0:  
            self.center -=self.ai_setting.ship_speed_factor  
        if self.moving_up and self.rect.top > 0:  
            self.centery -= self.ai_setting.ship_speed_factor  
        if self.moving_down and self.rect.bottom < self.screen_rect.bottom:  
            self.centery +=self.ai_setting.ship_speed_factor  
        self.rect.centerx = self.center  
        self.rect.centery = self.centery  
    def blitme(self):  
        self.screen.blit(self.image,self.rect)  

run.py

import sys  
import pygame  
from rocket import Rocket  
from setting import Setting  
import game_functions as gf  
def run():  
    pygame.init()  
    ai_setting = Setting()  
    screen =pygame.display.set_mode((ai_setting.screen_width,ai_setting.screen_height))  
    pygame.display.set_caption("Rocket")  
    r = Rocket(ai_setting,screen)  
    while True:  
        gf.check_events(r)  
        r.update()  
        gf.update_screen(ai_setting,screen,r)  
run()  

输出： 

 （能动的飞机哦）

 12-4

import sys  
import pygame  
def test():  
    pygame.init()  
    screen = pygame.display.set_mode((900,600))  
    pygame.display.set_caption("12-4")  
    bg_color = (255,255,255)  
    while True:  
        for event in pygame.event.get():  
            if event.type == pygame.QUIT:  
                sys.exit()  
            elif event.type == pygame.KEYDOWN:  
                if event.key == pygame.K_UP:  
                    bg_color=(255,0,255)  
                elif event.key == pygame.K_DOWN:  
                    bg_color=(0,255,255)  
                elif event.key == pygame.K_LEFT:  
                    bg_color=(255,255,0)  
                elif event.key == pygame.K_RIGHT:  
                    bg_color = (0,0,255)  
        screen.fill(bg_color)  
        pygame.display.flip()  
test()        

输出：

按四个方向键会有不同的输出结果，主要是背景颜色

 https://blog.csdn.net/weixin_38855195/article/details/78539670

12-5 侧面射击 ： 编写一个游戏， 将一艘飞船放在屏幕左边， 并允许玩家上下移动飞船。 在玩家按空格键时， 让飞船发射一颗在屏幕中向右穿行的子弹， 并在子弹离开
屏幕而消失后将其删除。
game_functions.py

import sys  
  
import pygame  
from bullet import Bullets  
def check_keydown_events(event,ai_setting,screen,rocket,bullets):  
    if event.key == pygame.K_UP:  
        rocket.moving_up = True  
    elif event.key == pygame.K_DOWN:  
        rocket.moving_down = True  
    elif event.key == pygame.K_SPACE:  
        new_bullet = Bullets(ai_setting,screen,rocket)  
        bullets.add(new_bullet)  
def check_keyup_events(event,rocket):  
    if event.key == pygame.K_UP:  
        rocket.moving_up = False  
    elif event.key == pygame.K_DOWN:  
        rocket.moving_down = False  
def check_events(ai_settings,screen,rocket,bullets):  
    """响应按键和鼠标事件"""  
    for event in pygame.event.get():  
        if event.type == pygame.QUIT:  
            print("Quit")  
            sys.exit()  
        elif event.type == pygame.KEYDOWN:  
            check_keydown_events(event,ai_settings,screen,rocket,bullets)  
        elif event.type == pygame.KEYUP:  
            check_keyup_events(event,rocket)  
def update_bullet(bullets):  
    for bullet in bullets:  
        if bullet.rect_left<=0:  
            bullets.remove(bullet)  
def update_screen(ai_settings,screen,rocket,bullets):  
    screen.fill(ai_settings.bg_color)  
    for bullet in bullets.sprites():  
        bullet.draw_bullet()  
    rocket.blitme()  
    pygame.display.flip()  

bullet.py

import pygame
from pygame.sprite import Sprite
class Bullets(Sprite):
    """docstring for Bullets"""
    def __init__(self, ai_settings, screen, rocket):
        super(Bullets, self).__init__()
        self.screen = screen
        self.rect = pygame.Rect(0, 0, ai_settings.bullet_width, ai_settings.bullet_height)
        self.rect.centery = rocket.rect.centery
        self.rect.right = rocket.rect.right
        # 存储小数表示的子弹位置
        self.x = float(self.rect.x)
        self.color = ai_settings.bullet_color
        self.speed_factor = ai_settings.bullet_speed_factor
    def update(self):
        self.x += self.speed_factor
        self.rect.x = self.x
    def draw_bullet(self):
        pygame.draw.rect(self.screen, self.color, self.rect)

setting.py

class Setting():  
  
    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 = (255,255,255)  
        self.ship_speed_factor = 1.5  
  
        self.bullet_speed_factor = 1  
        self.bullet_width = 15  
        self.bullet_height = 3  
        self.bullet_color =(60,60,60)  

rocket.py

import pygame
class Rocket():
    """docstring for Rocket"""
    def __init__(self,ai_setting, screen):
        self.screen = screen
        self.image = pygame.image.load('images/rocket.bmp')
        self.rect = self.image.get_rect()
        self.screen_rect = screen.get_rect()
        self.ai_setting = ai_setting
        self.rect.x = 0
        self.rect.centery = self.screen_rect.centery
        self.center = float(self.rect.centerx)
        self.centery = float(self.rect.centery)
        self.moving_up = False
        self.moving_down = False
    def update(self):
        if self.moving_up and self.rect.top > 0:
            self.centery -= self.ai_setting.ship_speed_factor
        if self.moving_down and self.rect.bottom < self.screen_rect.bottom:
            self.centery +=self.ai_setting.ship_speed_factor
        self.rect.centery = self.centery
    def blitme(self):
        self.screen.blit(self.image,self.rect)

run.py

import sys
import pygame
from rocket import Rocket
from setting import Setting
from pygame.sprite import Group
import game_functions as gf
def run():
    pygame.init()
    ai_setting = Setting()
    screen =pygame.display.set_mode((ai_setting.screen_width,ai_setting.screen_height))
    pygame.display.set_caption("Rocket")
    r = Rocket(ai_setting,screen)
    bullets = Group()
    while True:
        gf.check_events(ai_setting,screen,r,bullets)
        r.update()
        bullets.update()
        gf.update_screen(ai_setting,screen,r,bullets)
run()

输出：