我的Pygame角色没有连续移动

问题描述

实际上，我在pygame中构建了一个名为“外星人入侵”的游戏，其中船向外星人发射子弹。我现在处于游戏的早期阶段，但是我在这里遇到了一个问题。当我没有添加连续运动时，我的游戏就可以正常工作，但是现在它并没有按照我的预期运动！

1：aline_invasion.py

import pygame
import sys
from settings import Settings
from ship import Ship


class AlienInvasion:
    """Overall class to control game assets and behavIoUr"""

    def __init__(self):
        pygame.init()
        self.setting = Settings()
        self.screen = pygame.display.set_mode((self.setting.screen_width,self.setting.screen_height))
        self.title = self.setting.game_title
        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:
                if event.key == pygame.K_RIGHT:
                    self.ship.moving_right = True
                elif event.key == pygame.K_LEFT:
                    self.ship.moving_left = True

            elif event.type == pygame.K_UP:
                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.setting.bg_color)
        self.ship.blit_me()

        pygame.display.flip()


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

2：settings.py

import pygame


class Settings:
    def __init__(self):
        self.screen_width = 900
        self.screen_height = 600
        self.bg_color = (230,230,230)
        self.game_title = pygame.display.set_caption('Alien Invasion')

3：ship.py

import pygame


class Ship:
    def __init__(self,ai_game):
        self.screen = ai_game.screen
        self.screen_rect = self.screen.get_rect()
        self.moving_right = False
        self.moving_left = False

        # Load the ship image and get its rect
        self.image = pygame.image.load('images/ship.png')
        self.rect = self.image.get_rect()

        # Start each new ship at the bottom center of the screen.
        self.rect.midbottom = self.screen_rect.midbottom

    def update(self):
        if self.moving_right:
            self.rect.x += 1
        if self.moving_left:
            self.rect.x -= 1

    def blit_me(self):
        # Draw the ship at its current location
        self.screen.blit(self.image,self.rect)

解决方法

现在，我建议更改注册按钮按下的方式（我不能说这是否更好，但是有人遇到类似的问题并且对他有帮助）：

while run:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            exit()
        
    
    keys = pygame.key.get_pressed()
    if keys[pygame.K_q]:
        # [...]
    if keys[pygame.K_a]:
        # [...]
    if keys[pygame.K_LEFT]:
        # [...]

以此类推

pygame python