Python从入门到实践消灭外星人项目 移动问题

Question

python3.8 从入门到实践消灭外星人项目

图片只会在中间定着，按方向键没有用

尝试对照书检查错误，还是一个效果

我想要达到的结果

我想知道如何让它动起来

这是主文件

import sys

import pygame

from settings import Settings
from ship import Ship


class AlienInvasion:

    def __init__(self):
        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("Just a Text")
        self.ship = Ship(self)

    def run_game(self):
        while True:
            self._check_events()
            self.ship.update()
            self._update_screen()

    def _check_events(self):
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
            elif event.type == pygame.KEYDOWN:
                self._check_keydown_events(event)
            elif event.type == pygame.KEYUP:
                self._check_keyup_events(event)

    def _check_keydown_events(self, event):
        if event.key == pygame.K_RIGHT:
            self.ship.moving_right = True
        elif event.key == pygame.K_LEFT:
            self.ship.moving_left = True
        elif event.key == pygame.K_q:
            sys.exit()

    def _check_keyup_events(self, event):
        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)
        self.ship.blitme()
        pygame.display.flip()


if __name__ == '__main__':
    ai = AlienInvasion()
    ai.run_game()

这是ship

import pygame

from settings import Settings


class Ship:

    def __init__(self, ai_game):
        self.screen = ai_game.screen
        self.settings = ai_game.settings
        self.screen_rect = ai_game.screen.get_rect()
        self.image = pygame.image.load('images/Snake.bmp')
        self.rect = self.image.get_rect()
        self.rect.midbottom = self.screen_rect.midbottom
        self.x = float(self.rect.x)
        self.moving_right = False
        self.moving_left = False

    def update(self):
        if self.moving_right and self.rect.right < self.screen_rect.right:
            self.rect.x += self.settings.ship_speed
        if self.moving_left and self.rect.left > 0:
            self.rect.x -= self.settings.ship_speed
        self.rect.x = self.x

    def blitme(self):
        self.screen.blit(self.image, self.rect)

这是setting

class Settings:

    def __init__(self):
        self.screen_width = 2160
        self.screen_height = 1080
        self.bg_color = (255, 255, 255)
        self.ship_speed = 1.5

图片是这个

先谢过大家了

Answer 1

• 请看👉 ：已解决：为什么移动的外星人只有一列了？【python入门到实践13章】