我试图用pygame制作一个降雨效果,但似乎在更新精灵之前背景没有清理。 这是我执行代码时的样子..
我想知道是否有办法解决这个问题。
#!/usr/bin/python
VERSION = "0.1"
import os, sys, raindrop
from os import path
try:
import pygame
from pygame.locals import *
except ImportError, err:
print 'Could not load module %s' % (err)
sys.exit(2)
# main variables
WIDTH, HEIGHT, FPS = 300, 300, 30
# initialize game
pygame.init()
screen = pygame.display.set_mode((WIDTH,HEIGHT))
pygame.display.set_caption("Rain and Rain")
# background
background = pygame.Surface(screen.get_size())
background = background.convert()
background.fill((40,44,52))
# blitting
screen.blit(background,(0,0))
pygame.display.flip()
# clock for FPS settings
clock = pygame.time.Clock()
def main():
raindrops = pygame.sprite.Group()
# a function to create new drops
def newDrop():
nd = raindrop.Raindrop()
raindrops.add(nd)
# creating 10 rain drops
for x in range(0,9): newDrop()
# variable for main loop
running = True
# event loop
while running:
clock.tick(FPS)
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
raindrops.update()
screen.blit(background,(100,100))
raindrops.draw(screen)
pygame.display.flip()
pygame.quit()
if __name__ == '__main__': main()
import pygame
from pygame.locals import *
from os import path
from random import randint
from rain import HEIGHT
img_dir = path.join(path.dirname(__file__), 'img')
class Raindrop(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.width = randint(32, 64)
self.height = self.width + 33
self.image = pygame.image.load(path.join(img_dir, "raindrop.png")).convert_alpha()
self.image = pygame.transform.scale(self.image, (self.width, self.height))
self.speedy = 5 #randint(1, 8)
self.rect = self.image.get_rect()
self.rect.x = randint(0, 290)
self.rect.y = -self.height
def update(self):
self.rect.y += self.speedy
if self.rect.y == HEIGHT:
self.rect.y = -self.height
self.rect.x = randint(0, 290)
答案 0 :(得分:1)
这是您用来清除屏幕的行:
screen.blit(background, (100, 100))
换句话说;你从x = 100开始清除屏幕,y = 100。由于pygame坐标从topleft开始并向右和向下延伸,因此您不会清除x = 100左侧和y = 100左侧的屏幕。
简单修复就像在程序开始时那样在0,0处进行blitting。
screen.blit(background, (0, 0))