pygame，上下左右移动

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pygame，上下左右移动

2023-05-22 09:38| 来源: 网络整理| 查看: 265

第一次改写游戏代码，按键左右移动相对比较容易查找学习，更在意的是上下移动的问题。下面举个例子，放代码

settings. py

class Settings(): def __init__(self): self.screen_width = 1200 self.screen_height = 800 self.bg_color = (230,230,230) #火箭的速度 self.rocket_speed_factor = 1.5

rocket. py

import pygame class Rocket(): def __init__(self,lr_settings,screen): self.screen = screen self.lr_settings =lr_settings #加载游戏图像和初始化规格属性 self.image = pygame.image.load('images/rocket.bmp') self.rect = self.image.get_rect() self.screen_rect = screen.get_rect() #设置初始位置 self.rect.centerx = self.screen_rect.centerx self.rect.centery = self.screen_rect.centery #在火箭的属性center中存储小数值 self.centerx = float(self.rect.centerx) self.centery = float(self.rect.centery) #移动标志 self.moving_right = False self.moving_left = False self.moving_up = False self.moving_down = False def update(self): """根据移动标志调整火箭的位置""" #更新火箭的center值，而不是rect #注意self.rect.right和self.screen_rect.right的标点符号 if self.moving_right and self.rect.right 0: self.centerx -= self.lr_settings.rocket_speed_factor if self.moving_down and self.rect.bottom 0: self.centery -= self.lr_settings.rocket_speed_factor #根据self.centerx/y更新rect对象 self.rect.centerx = self.centerx self.rect.centery = self.centery def blitme(self): self.screen.blit(self.image,self.rect)

game_functions. py

import sys,pygame def check_keydown_events(event, rocket): """响应按键""" if event.key == pygame.K_RIGHT: rocket.moving_right = True elif event.key == pygame.K_LEFT: rocket.moving_left = True elif event.key == pygame.K_UP: rocket.moving_up = True elif event.key == pygame.K_DOWN: rocket.moving_down = True def check_keyup_events(event, rocket): """响应松开""" if event.key == pygame.K_RIGHT: rocket.moving_right = False elif event.key == pygame.K_LEFT: rocket.moving_left = False elif event.key == pygame.K_UP: rocket.moving_up = False elif event.key == pygame.K_DOWN: rocket.moving_down = False def check_events(rocket): """响应按键和鼠标事件""" for event in pygame.event.get(): if event.type == pygame.QUIT: sys.exit() elif event.type == pygame.KEYDOWN: check_keydown_events(event, rocket) elif event.type == pygame.KEYUP: check_keyup_events(event, rocket) def update_screen(lr_settings,screen,rocket): screen.fill(lr_settings.bg_color) rocket.blitme() pygame.display.flip()

主文件launch_rocket. py

import pygame from settings import Settings from rocket import Rocket import game_functions as gf def run_game(): """初始化pygame!!!""" pygame.init() lr_settings = Settings() screen = pygame.display.set_mode( (lr_settings.screen_width,lr_settings .screen_height)) #设置屏幕窗口大小 pygame.display.set_caption('Rocket') #给窗口命名 rocket = Rocket(lr_settings,screen) while True: #隶属于方法run_game()中，需要缩进 gf.check_events(rocket) rocket.update() gf.update_screen(lr_settings,screen,rocket) run_game()

代码部分标注，为个人学习笔记，仅供参考

注重讲解点 pygame方向键如下使用： K_RIGHT K_LEFT K_DOWN K_UP 而rect没有属性up 和down，应该是top和bottom 具体参考rocket.py/class rocket()/def update(self)

其他介绍：应当把所要应用的图像，rocket. bmp存储在我们当前游戏代码的主项目文件夹里，新建的子文件images中。

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pygame，上下左右移动

pygame，上下左右移动

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