类型错误:参数1必须是pygame.Surface,而不是MyClass

我想制作一个精灵的动画 Worker 从左向右水平移动。另外,我还有一个精灵,它是一个静态背景图像。

代码在第行失败 screen.blit(worker, (w_x,w_y)) 错误信息:

类型错误:参数1必须是pygame.Surface,而不是Worker

我知道只有浮雕表面是可能的,而不是 工人 . 但我怎么能 工人 为了给它做动画?

我对PyGame很陌生。因此,我们将非常感谢您的帮助。

代码:

import pygame, random

WHITE = (255, 255, 255)
GREEN = (20, 255, 140)
GREY = (210, 210 ,210)
RED = (255, 0, 0)
PURPLE = (255, 0, 255)

SCREENWIDTH=1000
SCREENHEIGHT=578

class Worker(pygame.sprite.Sprite):
    def __init__(self, image_file, location):
        # Call the parent class (Sprite) constructor
        # super().__init__()
        self.image = pygame.image.load(image_file)
        self.rect = self.image.get_rect()
        self.rect.left, self.rect.top = location


class Background(pygame.sprite.Sprite):
    def __init__(self, image_file, location):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load(image_file)
        self.rect = self.image.get_rect()
        self.rect.left, self.rect.top = location

pygame.init()

size = (SCREENWIDTH, SCREENHEIGHT)
screen = pygame.display.set_mode(size)
pygame.display.set_caption("TEST")

#all_sprites_list = pygame.sprite.Group()

worker = Worker("worker.png", [0,0])
w_x = worker.rect.left
w_y = worker.rect.top

bg = Background('bg.jpg', [0,0])

carryOn = True

while carryOn:
        for event in pygame.event.get():
            if event.type==pygame.QUIT:
                carryOn=False

        screen.blit(pygame.transform.scale(bg.image, (SCREENWIDTH, SCREENHEIGHT)), bg.rect)

        #Draw geo-fences
        pygame.draw.rect(screen, GREEN, [510,150,75,52])
        pygame.draw.rect(screen, GREEN, [450,250,68,40])

        w_x += 5
        screen.blit(worker, (w_x,w_y))

        #Refresh Screen
        pygame.display.update()

pygame.quit()
quit()