圆形精灵在Python中创建'Player'对象没有属性'rect'错误

问题描述

我正在尝试创建一个圆形的精灵，该精灵将在一个窗口中，该窗口在屏幕的左右两侧都具有墙壁。 我不能让class Player像圆圈一样正确地工作，但是我可以让它像正方形一样工作。 在尝试修复20个小时后，我为使该圈子正常运转而下了弯腰……或者至少了解我的代码为什么会失败。

import pygame

pygame.init()

black = (0,0,0)
white = (255,255,255)
gray = (105,105,105)
red = (255,0,0)

class Barrier(pygame.sprite.Sprite): #Barriers will be walls and "floors"

    def __init__(self,x,y,width,height,color):
        super().__init__()
        self.image = pygame.Surface([width, height])
        self.image.fill(color)
        self.rect = self.image.get_rect()
        self.rect.y = y
        self.rect.x = x

class Player(pygame.sprite.Sprite): #player will be a circle

    def __int__(self,x,y):
        super().__init__()

        self.image = pygame.Surface((50,50))
        self.image.fill(white)

        pygame.draw.circle(self.image, black, (25, 25), 25, 0)

        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y

        self.change_x = 0
        self.change_y = 0
        self.barrier = None

    def changespeed(self, x, y):
        self.change_x += x
        self.change_y += y

    def update(self):
        self.rect.x += self.change_x

        block_hit_list = pygame.sprite.spritecollide(self, self.barrier, False)
        for block in block_hit_list:
            if self.change_x > 0:
                self.rect.right = block.rect.left
            else:
                self.rect.left = block.rect.right

        self.rect.y += self.change_y
        block_hit_list = pygame.sprite.spritecollide(self, self.barrier, False)

        for block in block_hit_list:
            if self.change_y > 0:
                self.rect.bottom = block.rect.top
            else:
                self.rect.top = block.rect.bottom

screen = pygame.display.set_mode((800,480))
pygame.display.set_caption("Test")
background = pygame.Surface(screen.get_size())
background = background.convert()
background.fill(white)

all_sprite_list = pygame.sprite.Group()
wall_list = pygame.sprite.Group() #wall will be a vertical Barrier

wall = Barrier(0,0,10,800,red)
wall_list.add(wall)
all_sprite_list.add(wall)

wall = Barrier(790,0,10,800,red)
wall_list.add(wall)
all_sprite_list.add(wall)

player = Player(50,50)
player.barrier = wall_list

all_sprite_list.add(player)
clock = pygame.time.Clock()

score = 0

done = False

while not done:

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            done = True

        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                player.changespeed(-3, 0)
            elif event.key == pygame.K_RIGHT:
                player.changespeed(3, 0)
            elif event.key == pygame.K_UP:
                player.changespeed(0, -3)
            elif event.key == pygame.K_DOWN:
                player.changespeed(0, 3)

        elif event.type == pygame.KEYUP:
            if event.key == pygame.K_LEFT:
                player.changespeed(3, 0)
            elif event.key == pygame.K_RIGHT:
                player.changespeed(-3, 0)
            elif event.key == pygame.K_UP:
                player.changespeed(0, 3)
            elif event.key == pygame.K_DOWN:
                player.changespeed(0, -3)

    all_sprite_list.update()

    screen.fill(white)
    all_sprite_list.draw(screen)
    pygame.display.flip()

    clock.tick(40)

pygame.quit()

完全回溯错误：

Traceback (most recent call last):
  File "D:/pyDump/FallGame/freeFALL.py", line 114, in <module>
    all_sprite_list.update()
  File "C:\Program Files\Anaconda3\lib\site-packages\pygame\sprite.py", line 462, in update
    s.update(*args)
  File "D:/pyDump/FallGame/freeFALL.py", line 43, in update
    self.rect.x += self.change_x
AttributeError: 'Player' object has no attribute 'rect'

对于上下文，我在PC上使用Pycharm和python 3.5。 谢谢！

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