关于pygame的问题
零基础学python的pygame碰撞检测的课件内容,自己打了一遍发现有个问题:import pygame
import sys
import random
from pygame.locals import *
class Ball(pygame.sprite.Sprite):
def __init__(self, image, position, speed, bg_size):
self.image = pygame.image.load(image).convert_alpha()
self.rect = self.image.get_rect()
self.rect.left, self.rect.top = position
self.speed = speed
self.width, self.height = bg_size
self.radius = self.rect.width / 2
pygame.sprite.Sprite.__init__(self) #sprite
def move(self):
self.rect = self.rect.move(self.speed) ##移动放在前面就不会
if self.rect.right < 0:
self.rect.left = self.width
elif self.rect.left > self.width:
self.rect.right = 0
elif self.rect.top > self.height:
self.rect.bottom = 0
elif self.rect.bottom < 0:
self.rect.top = self.height
## self.rect = self.rect.move(self.speed) 如果把移动放在判断后面会出现两个小球难分难解的情况
def main():
pygame.init()
image = 'gray_ball.png'
bg = 'background.png'
runing = True
bg_size = width, height = 1024, 681
screen = pygame.display.set_mode(bg_size)
pygame.display.set_caption('Play the ball')
background = pygame.image.load(bg).convert_alpha()
clock = pygame.time.Clock()
balls = []
group = pygame.sprite.Group()
for each in range(5):
position = random.randint(0, width-100), random.randint(0, height-100)
speed =
ball = Ball(image, position, speed, bg_size)
while pygame.sprite.spritecollide(ball, group, False, pygame.sprite.collide_circle):
ball.rect.left, ball.rect.top = random.randint(0, width-100), random.randint(0, height-100)
balls.append(ball)
group.add(ball)
while runing:
for event in pygame.event.get():
if event.type == QUIT:
sys.exit()
screen.blit(background, (0, 0))
for each_ball in balls:
screen.blit(each_ball.image, each_ball.rect)
each_ball.move()
for each in group:
group.remove(each)
if pygame.sprite.spritecollide(each, group, False, pygame.sprite.collide_circle):
each.speed = -each.speed
each.speed = -each.speed
group.add(each)
pygame.display.flip()
clock.tick(120)
if __name__ == '__main__':
main()
想知道造成难解难分的原因
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