Python--写游戏pygame入门二（屏幕上画圆，矩形，椭圆）

1、建立一个窗口

import pygame#模块初始化pygame.init() #创建一个窗口，窗口大小为640*480screen=pygame.display.set_mode([640,480]) #定义窗口的标题为'Draw'pygame.display.set_caption('Draw')#用白色填充窗口screen.fill((255,255,255))

2、退出窗口

while True:    for event in pygame.event.get():        if event.type==pygame.QUIT:            sys.exit()

event.get()函数获取事件队列，即把捕获到的事件放入一个队列，然后一一执行。

3、画圆，矩形，椭圆

说明文档链接如下：

http://www.pygame.org/docs/ref/draw.html

4、当按下键盘上的按键，在频幕上随机画出圆，矩形或者椭圆，按【退出键】退出程序

#!usr/bin/env python#coding=utf-8import pygameimport sysimport randomscreen_size = (640, 480)backgroundcolor = (255, 127, 255)#pygame初始化pygame.init()#创建一个窗口screen = pygame.display.set_mode(screen_size, 0, 32)pygame.display.set_caption('Draw rect and circle')#背景填充screen.fill(backgroundcolor)while True:    for event in pygame.event.get():        #按下关闭按钮，退出程序        if event.type==pygame.QUIT:            sys.exit()        #按下键盘上的任意键，在屏幕上画图        elif event.type == pygame.KEYDOWN:            i = random.randint(0, 2)            drawcolor = (random.randint(0,255),random.randint(0,255),random.randint(0,255))            top = random.randint(0,400)            left = random.randint(0,500)            width = random.randint(0,5)            #画圆            if i == 0:                radiu = random.randint(width,100)                pygame.draw.circle(screen, drawcolor, [top, left], radiu, width)            #画矩形            elif i == 1:                rectwidth = random.randint(0,255)                rectheight = random.randint(0,100)                pygame.draw.rect(screen, drawcolor,[left, top, rectwidth, rectheight], width)            #画椭圆            else:                try:                    rectwidth = random.randint(0,255)                    rectheight = random.randint(0,100)                    pygame.draw.ellipse(screen, drawcolor, [left, top, rectwidth, rectheight], width)                except ValueError:                    print 'ellipse'                    pass    #重画屏幕    pygame.display.flip()        

5、效果图