pygame实现雷电游戏雏形开发-创新互联

本文实例为大家分享了pygame实现雷电游戏开发代码，供大家参考，具体内容如下

源代码:

stars.py

#-*- coding=utf-8 -*-
#!/usr/bin/python
 
import pygame
from pygame.locals import *
from random import randint
import math
 
class Star(object):
  def __init__(self, x, y, speed, color=(255,255,255)):
 
    self.x = x
    self.y = y
    self.speed = speed
    self.color = color
 
class Stars(object):
  '''
    用于绘制星星背景
  '''
  def __init__(self, num = 0, SCREEN_SIZE=(800,600), color=(255,255,255)):
    self.stars = []
    self.MIN_SPEED = 10
    self.MAX_SPEED = 300
    self.SCREEN_SIZE = SCREEN_SIZE
    if num > 0:
      self.create_star(num, color)
 
  def set_min_speed(self,speed):
    self.MIN_SPEED = speed
  def set_max_speed(self,speed):
    self.MAX_SPEED = speed
 
  def create_star(self,num = 1, color = (255,255,255)):
    '''创建一个或多个星星,颜色可选'''
    for i in xrange(0,num):
      x = float(randint(0, self.SCREEN_SIZE[0]))
      y = float(randint(0, self.SCREEN_SIZE[1]))
      speed = float(randint(self.MIN_SPEED, self.MAX_SPEED))
      self.stars.append( Star(x, y, speed, color) )
 
  def move(self,time_passed_seconds):
    '''移动星星并过滤'''
    for star in self.stars:
      star.y = star.y + time_passed_seconds * star.speed
    #过滤跑出画面的星星
    self.stars = filter(lambda one: one.y<=self.SCREEN_SIZE[1], self.stars)
 
  def draw(self, surface):
    '''将星星画到指定图像对象'''
    for star in self.stars:
      #pygame.draw.aaline(surface, star.color,\
      #    (star.x, star.y), (star.x+1., star.y))
      surface.set_at((int(star.x),int(star.y)),star.color)
 
 
def test():
 
  pygame.init()
  screen = pygame.display.set_mode((800, 600)) #, FULLSCREEN)
 
  stars = Stars()
  #stars.set_max_speed(1000)
  #stars.set_min_speed(300)
 
  # 在第一帧，画上一些星星
  stars.create_star(200)
   
  clock = pygame.time.Clock()
 
  white = (255, 255, 255)
   
  while True:
 
    for event in pygame.event.get():
      if event.type == QUIT:
        return
      if event.type == KEYDOWN:
        return
 
    time_passed = clock.tick(30)
    time_passed_seconds = time_passed / 1000.
 
    #update_background(stars, screen, time_passed_seconds)
    # 增加一颗新的星星
    stars.create_star(1)
    stars.move(time_passed_seconds)
 
    screen.fill((0, 0, 0))
 
    # 绘制所有的星
    stars.draw(screen)
 
    pygame.display.update()
 
if __name__ == "__main__":
  test()

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