pygame:优化移动的小球

[wokaoyan1981]

意图：让红色小球在蓝色背景上面随机移动。
问题：移动不流畅，而且好像只在左上-右下方向运动。

#1 ball.py

import pygame
from random import choice
from settings import Settings


class Ball():
    def __init__(self, screen):
        ai_settings = Settings()
        self.screen = screen

        self.image = pygame.image.load('images/ball.png')
        self.rect = self.image.get_rect()
        self.screen_rect = screen.get_rect()

        self.rect.centerx = self.screen_rect.centerx
        self.rect.centery = self.screen_rect.centery

        self.x_values = [ai_settings.screen_width/2]
        self.y_values = [ai_settings.screen_height/2]

    def blitme(self):
        self.screen.blit(self.image, self.rect)

    def fill_walk(self):
        x_direction = choice([1, -1])
        x_distance = choice([30, 40])
        x_step = x_direction * x_distance

        y_direction = choice([-1, 1])
        y_distance = choice([ 30, 40])
        y_step = y_direction * y_distance

        next_x = self.x_values[-1] + x_step
        next_y = self.y_values[-1] + y_step

        self.x_values.append(next_x)
        self.y_values.append(next_y)

    def update(self):
        self.rect.centerx = self.x_values[-1]
        self.rect.centery = self.x_values[-1]

#2 moving_ball.py

import pygame
import sys
from settings import Settings
from ball import Ball
import game_functions as gf


class MovingBall():


    def run_game(self):
        pygame.init()
        ai_settings = Settings()
        screen = pygame.display.set_mode((ai_settings.screen_width,
                                          ai_settings.screen_height))
        pygame.display.set_caption("Moving Ball")
        ball = Ball(screen)

        while True:
            gf.check_events()
            ball.fill_walk()
            ball.update()
            gf.update_screen(ai_settings, screen, ball)


moving_ball = MovingBall()
moving_ball.run_game()

#3 game_functions.py

import sys
import pygame

def check_events():
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            sys.exit()

def update_screen(ai_settings, screen, ball):
    screen.fill(ai_settings.bg_color)
    ball.blitme()
    pygame.display.flip()

#4 settings.py

class Settings():
    def __init__(self):
        self.screen_width = 1200
        self.screen_height = 800
        self.bg_color = (80, 166, 209)

[冰风漫天]

#1 ball.py def update(self): self.rect.centerx = self.x_values[-1] self.rect.centery = self.x_values[-1] 这个应该是self.y_values

[wokaoyan1981]

引用 1 楼 冰风漫天 的回复:

#1 ball.py def update(self): self.rect.centerx = self.x_values[-1] self.rect.centery = self.x_values[-1] 这个应该是self.y_values

的确是，我太粗心大意了。