小编gal*_*ies的帖子

你好，我是一名相当新的程序员，我正在尝试让球从 45 度三角形反弹。这是我的代码：

该程序使球在撞击窗户两侧时弹起，但我不知道如何使其从三角形弹起。

import pygame # importing the pygame
import sys # importing the system libraries
import time # importing timer
import random
from pygame.locals import * # importing the locals functions from the pygame library set
pygame.init() # the function from pygame that initializes all relevant variable

# setting length and width
width = 500
length = 300

# colour variables
WHITE = (255,255,255)
BLUE = (0,0,255)

# importing ball image
ball = pygame.image.load('ball.png')
ballRect = ball.get_rect()
ballRect.left …