代码清单18-5
实现游戏碰撞，掉落，得分，生命，游戏结束的音效
import pygame, sys
class MyBallClass(pygame.sprite.Sprite):
def __init__(self, image_file, speed, location):
pygame.sprite.Sprite.__init__(self)
self.image = pygame.image.load(image_file)
self.rect = self.image.get_rect()
self.rect.left, self.rect.top = location
self.speed = speed
def move(self):
global score,score_font, score_surf
self.rect = self.rect.move(self.speed)
if self.rect.left < 0 or self.rect.right > screen.get_width():
self.speed[0] = -self.speed[0]
hit_wall.play()
if self.rect.top <=0:
self.speed[1] = -self.speed[1]
score = score + 1
score_surf = score_font.render(str(score), 1,(0, 0 ,0))
get_point.play()
class MyPaddleClass(pygame.sprite.Sprite):
def __init__(self, location = [0,0]):
pygame.sprite.Sprite.__init__(self)
image_surface = pygame.surface.Surface([100, 20])
image_surface.fill([0,0,0])
self.image = image_surface.convert()
self.rect = self.image.get_rect()
self.rect.left, self.rect.top = location
pygame.init()
pygame.mixer.init()
hit = pygame.mixer.Sound("hit_paddle.wav")
hit.set_volume(0.4)
hit_wall = pygame.mixer.Sound("hit_wall.wav")
hit_wall.set_volume(0.4)
get_point = pygame.mixer.Sound("get_point.wav")
get_point.set_volume(0.2)
splat = pygame.mixer.Sound("splat.wav")
splat.set_volume(0.6)
new_life = pygame.mixer.Sound("new_life.wav")
new_life.set_volume(0.5)
bye = pygame.mixer.Sound("game_over.wav")
bye.set_volume(0.6)
screen = pygame.display.set_mode([640, 480])
clock = pygame.time.Clock()
ball_speed = [10, 5]
myBall = MyBallClass('wackyball.bmp', ball_speed, [50,50])
ballGroup = pygame.sprite.Group(myBall)
paddle = MyPaddleClass([270, 400])
lives = 3
score = 0
score_font = pygame.font.Font(None, 50)
score_surf = score_font.render(str(score), 1, (0,0,0))
score_pos = [10, 10]
done = False
running = True
while running:
clock.tick(30)
screen.fill([255, 255, 255])
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
elif event.type == pygame.MOUSEMOTION:
paddle.rect.centerx = event.pos[0]
if pygame.sprite.spritecollide(paddle,ballGroup,False):
myBall.speed[1] = -myBall.speed[1]
myBall.move()
if not done:
screen.blit(myBall.image,myBall.rect)
screen.blit(paddle.image,paddle.rect)
screen.blit(score_surf, score_pos)
for i in range (lives):
width = screen.get_width()
screen.blit(myBall.image,[width - 40 * i ,20])
pygame.display.flip()
if myBall.rect.top >= screen.get_rect().bottom:
splat.play()
lives = lives - 1
if lives == 0:
final_text1 = "Game Over"
final_text2 = "Your final score is: " + str(score)
ft1_font = pageme.font.Font(None, 70)
ft1_surf = ft1_font.render(final_text1, 1, (0, 0, 0))
ft2_font = pygame.font.Font(None, 50)
ft2_surf = ft2_font.render(final_text2, 1, (0, 0, 0))
screen.blit(ft1_surf,(screen.get_width()/2 - \
ft1_surf.get_width/2, 100))
screen.blit(ft2_surf,[screen.get_width()/2 - \
ft2_surf.get_width()/2, 200])
pygame.display.flip()
done = True
bye.play()
else: #wait 2 seconds,then start the next ball
pygame.time.delay(2000)
myBall.rect.topleft = ([50, 50])
new_life.play()
pygame.quit()
