用Python和Pygame写游戏-从入门到精通（7） 混杂的例子

混杂的例子

import pygamefrom pygame.locals import *from sys import exit from random import *from math import pi pygame.init()screen = pygame.display.set_mode((640, 480), 0, 32)points = []close = False while True:       for event in pygame.event.get():        if event.type == QUIT:            pygame.quit()            exit            close = True        if event.type == KEYDOWN:            # 按任意键可以清屏并把点回复到原始状态            points = []            screen.fill((255,255,255))        if event.type == MOUSEBUTTONDOWN:            screen.fill((255,255,255))            # 画随机矩形            rc = (randint(0,255), randint(0,255), randint(0,255))            rp = (randint(0,639), randint(0,479))            rs = (639-randint(rp[0], 639), 479-randint(rp[1], 479))            pygame.draw.rect(screen, rc, Rect(rp, rs))            # 画随机圆形            rc = (randint(0,255), randint(0,255), randint(0,255))            rp = (randint(0,639), randint(0,479))            rr = randint(1, 200)            pygame.draw.circle(screen, rc, rp, rr)            # 获得当前鼠标点击位置            x, y = pygame.mouse.get_pos()            points.append((x, y))            # 根据点击位置画弧线            angle = (x/639.)*pi*2.            pygame.draw.arc(screen, (0,0,0), (0,0,639,479), 0, angle, 3)            # 根据点击位置画椭圆            pygame.draw.ellipse(screen, (0, 255, 0), (0, 0, x, y))            # 从左上和右下画两根线连接到点击位置            pygame.draw.line(screen, (0, 0, 255), (0, 0), (x, y))            pygame.draw.line(screen, (255, 0, 0), (640, 480), (x, y))            # 画点击轨迹图            if len(points) > 1:                pygame.draw.lines(screen, (155, 155, 0), False, points, 2)            # 和轨迹图基本一样，只不过是闭合的，因为会覆盖，所以这里注释了            #if len(points) >= 3:            #    pygame.draw.polygon(screen, (0, 155, 155), points, 2)            # 把每个点画明显一点            for p in points:                pygame.draw.circle(screen, (155, 155, 155), p, 3)        if close == True:        break        pygame.display.update()