Question

我是pygame（和编码）的新手，无法弄清楚如何让我的图像（xwing）离开屏幕的一侧并进入屏幕的另一侧。我的当前代码说错了。。。

Traceback (most recent call last):
  File "/Users/Grant/Documents/xwingexample.py", line 85, in <module>
    main()
  File "/Users/Grant/Documents/xwingexample.py", line 61, in main
    player_rect.x += change_x
AttributeError: 'int' object has no attribute 'x'

谢谢！

以下是代码

import sys
import random
import pygame as pg


pg.init()
screen = pg.display.set_mode((1280, 800))
display_width = 1280
display_height= 800

black= (0,0,0)
white= (255,255,255)
red = (255,0,0)
blue_violet = (138,43,226)

xwingImg = pg.image.load('X-Wing.bmp').convert()
tieImg= pg.image.load('tiefighter.png').convert()
space=pg.image.load('space.jpg').convert()

BG_image = pg.image.load('space.jpg').convert()


def main():
    clock = pg.time.Clock()
    # Surfaces/images have a `get_rect` method which 
    # returns a rect with the dimensions of the image.
    player_rect = xwingImg.get_rect()
    player_rect.center = ( 800,400)
    change_x = 0
    change_y = 0
    enemies = []
    spawn_counter = 30

    done = False

    while not done:
        for event in pg.event.get():
            if event.type == pg.QUIT:
                done = True
            if event.type == pg.KEYDOWN:
                if event.key == pg.K_d:
                    change_x = 5
                if event.key == pg.K_a:
                    change_x = -5
            if event.type == pg.KEYUP:
                if event.key == pg.K_d and change_x > 0:
                    change_x = 0
                if event.key == pg.K_a and change_x < 0:
                    change_x = 0


        # Spawn enemies if counter <= 0 then reset it.
        spawn_counter -= 1
        if spawn_counter <= 0:
            # Append an enemy rect. You can pass the position directly as an argument.
            enemies.append(tieImg.get_rect(topleft=(random.randrange(1280), -800 )))
            spawn_counter =  30


        # Update player_rect and enemies.
        player_rect.x += change_x
        player_rect.y += change_y
        for enemy_rect in enemies:
            enemy_rect.y += 5
            # Collision detection with pygame.Rect.colliderect.
            if player_rect.colliderect(enemy_rect):
                print('Collision!')

        # Draw everything.
        screen.blit(BG_image, (0,0))
        for enemy_rect in enemies:
            screen.blit(tieImg, enemy_rect)
        screen.blit(xwingImg, player_rect)

        if player_rect.x > display_width:
            player_rect = 0
        if player_rect.y < display_width:
            player_rect= display_width

        pg.display.flip()
        clock.tick(40)


if __name__ == '__main__':
    main()
    pg.quit()
    sys.exit()

Answer 1

检查第75-78行，您尝试将整数分配给player_rect，之后，player_rect.x += change_x会返回此错误：

'int' object has no attribute 'x'

我想你想要改变player_rect.x和player_rect.y，所以你可以试试这个，它运作良好。

if player_rect.x > display_width:
    player_rect.x = 0
if player_rect.y < display_width:
    player_rect.y= display_width

如何在pygame中让我的图像从屏幕的一侧移动到屏幕的另一侧？

1 个答案: