Python 为什么红色和绿色方块之间会出现黑线；“移动”；

我有一段代码，它创建了一种infinte滚动背景。背景是一排红色和绿色的正方形。为了创建这种infinte滚动效果，我重复使用了背景“image”3次，中间背景“image”的左右两侧。每当摄影机到达边界时，位置都会更新，以便将中间背景设置为摄影机位置。对不起，如果我没有解释清楚，但这是代码

设置.py

import pygame
import os


WIDTH = 1024
HEIGHT = 640

WIN = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Lol")
FPS  = 60

WHITE = (255,255,255)
BLACK = (0,0,0)
RED = (255, 0,0)
GREEN = (0,255,0)

CLOCK = pygame.time.Clock()
TILEWH = 32

import pygame
from settings import *
pygame.init()


class Background:
    def __init__(self):
        self.init_background()

    def init_background(self):
        self.background = pygame.Surface((WIDTH, HEIGHT))
        for x in range(0, WIDTH, 64):
            pygame.draw.rect(self.background, RED, pygame.Rect(x, 0,TILEWH,TILEWH))
        for x in range(0+TILEWH, WIDTH, 64):
            pygame.draw.rect(self.background, GREEN, pygame.Rect(x, 0,TILEWH,TILEWH))
        self.bgXY_1 = [0-self.background.get_width(),0]
        self.bgXY_2 = [0,0]
        self.bgXY_3 = [self.background.get_width(),0]
        self.bg = [self.bgXY_1,self.bgXY_2,self.bgXY_3]


class Game:
    def __init__(self):
        self.running = True
        self.camera = 0
        self.offset = 0
        self.grid_start_red = True
        self.direction = None
        self.background = Background()
        self.run()

    def run(self):
        while self.running:
            CLOCK.tick(FPS)
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    self.running = False
                    pygame.quit()
            keys_pressed = pygame.key.get_pressed()
            self.handle_movement(keys_pressed)
            self.draw()

    def handle_movement(self,keys_pressed):
        if keys_pressed[pygame.K_a]:
            self.camera-=4
            if self.camera % 1024 == 0:
                for background_item in self.background.bg:
                    background_item[0]-=1024
        if keys_pressed[pygame.K_d]:
            self.camera+=4
            if self.camera % 1024 == 0:
                for background_item in self.background.bg:
                    background_item[0]+=1024             

    def draw(self):
        WIN.fill(WHITE)
        WIN.blit(self.background.background,(self.background.bgXY_1[0]-self.camera, self.background.bgXY_1[1]))
        WIN.blit(self.background.background, (self.background.bgXY_2[0]-self.camera, self.background.bgXY_2[1]))
        WIN.blit(self.background.background, (self.background.bgXY_3[0]-self.camera, self.background.bgXY_3[1]))
        pygame.display.update()

main = Game()

main.py

import pygame
import os


WIDTH = 1024
HEIGHT = 640

WIN = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Lol")
FPS  = 60

WHITE = (255,255,255)
BLACK = (0,0,0)
RED = (255, 0,0)
GREEN = (0,255,0)

CLOCK = pygame.time.Clock()
TILEWH = 32

import pygame
from settings import *
pygame.init()


class Background:
    def __init__(self):
        self.init_background()

    def init_background(self):
        self.background = pygame.Surface((WIDTH, HEIGHT))
        for x in range(0, WIDTH, 64):
            pygame.draw.rect(self.background, RED, pygame.Rect(x, 0,TILEWH,TILEWH))
        for x in range(0+TILEWH, WIDTH, 64):
            pygame.draw.rect(self.background, GREEN, pygame.Rect(x, 0,TILEWH,TILEWH))
        self.bgXY_1 = [0-self.background.get_width(),0]
        self.bgXY_2 = [0,0]
        self.bgXY_3 = [self.background.get_width(),0]
        self.bg = [self.bgXY_1,self.bgXY_2,self.bgXY_3]


class Game:
    def __init__(self):
        self.running = True
        self.camera = 0
        self.offset = 0
        self.grid_start_red = True
        self.direction = None
        self.background = Background()
        self.run()

    def run(self):
        while self.running:
            CLOCK.tick(FPS)
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    self.running = False
                    pygame.quit()
            keys_pressed = pygame.key.get_pressed()
            self.handle_movement(keys_pressed)
            self.draw()

    def handle_movement(self,keys_pressed):
        if keys_pressed[pygame.K_a]:
            self.camera-=4
            if self.camera % 1024 == 0:
                for background_item in self.background.bg:
                    background_item[0]-=1024
        if keys_pressed[pygame.K_d]:
            self.camera+=4
            if self.camera % 1024 == 0:
                for background_item in self.background.bg:
                    background_item[0]+=1024             

    def draw(self):
        WIN.fill(WHITE)
        WIN.blit(self.background.background,(self.background.bgXY_1[0]-self.camera, self.background.bgXY_1[1]))
        WIN.blit(self.background.background, (self.background.bgXY_2[0]-self.camera, self.background.bgXY_2[1]))
        WIN.blit(self.background.background, (self.background.bgXY_3[0]-self.camera, self.background.bgXY_3[1]))
        pygame.display.update()

main = Game()

A和D键用于“移动”

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为什么红色和绿色方块移动时会出现黑线？这是因为硬件限制吗？有没有更好的方法来达到同样的效果？请让我知道！：）

我仔细看了看，好像有黑线，但当我再仔细看时，一切似乎都很好，而且这些线实际上是淡黄色的，我想这只是一种视觉错觉你好，谢谢你的回答，我刚刚意识到我输入了错误的代码，self.camera应该更新4或-4（显然取决于移动的方向，因此self.camera+=4等等）。进行此更改时，黑线会更加明显。作为一个完美主义者，这真的很困扰我，事实上相机更新的次数越高，黑线就越大。我相信我能以更好的方式达到这个效果，实际上对我来说效果似乎有所减弱，但仔细观察后，我发现黄线变大了一点（可能这取决于屏幕），但我不知道如何减小，除非你可以创建一个图像（.png或其他）那是由这样的方块和闪电组成的，是的，我想这么做，但我太懒了，没有进入photoshop制作网格，我现在就试试