Python实例练手项目源码 - 代码雨

#  -*- coding:utf-8 -*-

#导入系统文件库
import pygame
import random
from pygame.locals import *
from random import randint


#定义一些窗体参数及加载字体文件
SCREEN_WIDTH  = 900         # 窗体宽度
SCREEN_HEIGHT = 600         # 窗体宽度
LOW_SPEED  = 4              # 字体移动最低速度
HIGH_SPEED = 10             # 字体移动最快速度
FONT_COLOR = (00,150,00)    # 字体颜色
FONT_SIZE = 5               # 字体尺寸
FONT_NOM  = 20              # 显示字体数量  从0开始
FONT_NAME = "calibrii.ttf"  # 注意字体的文件名必须与真实文件完全相同（注意ttf的大小写），且文件名不能是中文
FREQUENCE = 10              # 时间频度
times = 0                   # 初始化时间


# 定义随机参数
def randomspeed() :
    return randint(LOW_SPEED,HIGH_SPEED)
def randomposition() :
    return randint(0,SCREEN_WIDTH),randint(0,SCREEN_HEIGHT)
def randomoname() :
    return randint(0,100000)
def randomvalue() :
    return randint(0,100)              # this is your own display number range


#class of sprite
class Word(pygame.sprite.Sprite) :
    def __init__(self,bornposition) :
        pygame.sprite.Sprite.__init__(self)
        self.value = randomvalue()
        self.font = pygame.font.Font(None,FONT_SIZE)
        self.image = self.font.render(str(self.value),True,FONT_COLOR)
        self.speed = randomspeed()
        self.rect = self.image.get_rect()
        self.rect.topleft = bornposition

    def update(self) :
        self.rect = self.rect.move(0,self.speed)
        if self.rect.top > SCREEN_HEIGHT :
            self.kill()


#init the available modules
pygame.init()
screen = pygame.display.set_mode((SCREEN_WIDTH,SCREEN_HEIGHT))
pygame.display.set_caption("ViatorSun CodeRain")
clock = pygame.time.Clock()
group = pygame.sprite.Group()
group_count = int(SCREEN_WIDTH / FONT_NOM)


#mainloop
while True :
    time = clock.tick(FREQUENCE)
    for event in pygame.event.get() :
        if event.type == QUIT :
            pygame.quit()
            exit()

    screen.fill((0,0,0))
    for i in range(0,group_count) :
        group.add(Word((i * FONT_NOM,-FONT_NOM)))

    group.update()
    group.draw(screen)
    pygame.display.update()