pygame笔记（四十二） pygame（9） 加载音乐

import pygame
import sys
import math
from random import *


# 动画精灵就是一个带有图像和位置数据的对象
# 我们这里继承他，主要调用一个初始化函数
class Ball(pygame.sprite.Sprite):  # 继承动画精灵基类

    # 调用动画精灵的初始化函数
    def __init__(self,image,position,speed,bg_size):  
        pygame.sprite.Sprite.__init__(self)

        self.image = pygame.image.load(image).convert_alpha()
        self.rect = self.image.get_rect()
        self.rect.left, self.rect.top = position
        self.speed = speed
        self.width, self.height = bg_size[0], bg_size[1]
        self.radius = self.rect.width / 2

    def move(self):
        self.rect = self.rect.move(self.speed)

        if self.rect.right < 0:
            self.rect.left = self.width

        elif self.rect.left > self.width:
            self.rect.right = 0

        elif self.rect.bottom < 0:
            self.rect.top = self.height

        elif self.rect.top > self.height:
            self.rect.bottom = 0

def main():
    pygame.init()

    ball_image = "gray_ball.png"
    bg_image = "background.png"

    # 如果点击暂停 可以结束循环
    running = True

    # 添加背景音乐
    pygame.mixer.music.load("bg_music.ogg")
    pygame.mixer.music.play()

    # 添加音效
    winner_sound = pygame.mixer.Sound("winner.wav")
    loser_sound = pygame.mixer.Sound("loser.wav")
    hole_sound = pygame.mixer.Sound("hole.wav")

    # 音乐结束游戏结束
    GAMEOVER = pygame.USEREVENT                # 自定义事件,自定义事件 GAMEOVER 不用加 pygame
    pygame.mixer.music.set_endevent(GAMEOVER)  # 音乐结束时将自定义事件GAMEPVER加入事件列表

    bg_size = width, height = 1024, 681
    screen = pygame.display.set_mode(bg_size)
    pygame.display.set_caption("玩个球")

    background = pygame.image.load(bg_image).convert_alpha()

    # 添加精灵组
    group = pygame.sprite.Group()

    # 创建5个球
    BALL_NUM = 5
    for i in range(BALL_NUM):
        position = randint(0, width-100), randint(0, height-100)
        speed = [randint(-10, 10), randint(-10, 10)]
        ball = Ball(ball_image,position,speed,bg_size)

        # 防止出生就重叠,每新建一个就和之前的检测，如果有的话，就重新赋值坐标
        while pygame.sprite.spritecollide(ball, group, False, pygame.sprite.collide_circle):
            ball.rect.left, ball.rect.top = randint(0, width-100), randint(0, height-100)

        group.add(ball)

    clock = pygame.time.Clock()

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

            elif event.type == GAMEOVER:   # 自定义事件 GAMEOVER 不用加 pygame
                loser_sound.play()
                running = False
            

        screen.blit(background,(0, 0))

        for each in group:
            each.move()
            screen.blit(each.image,each.rect)
        

        for each in group:
            group.remove(each)

            if pygame.sprite.spritecollide(each, group, False, pygame.sprite.collide_circle):
                each.speed[0] = -each.speed[0]
                each.speed[1] = -each.speed[1]

            group.add(each)
            
        pygame.display.flip()
        clock.tick(30)

if __name__ == "__main__":
    main()   

使用pygame.mixer.music一次只能播放一个音乐
但是pygame.mixer.Sound可以同时播放好几个
声音文件只接受ogg或者wav格式文件

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音效pygame.mixer.Sound函数

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音乐pygame.mixer.music函数