Appearance
playBgm(src, volume?, track?, time?, loop?, rate?): any
src
volume?
track?
time?
loop?
rate?
any
播放背景音乐
string
音乐地址
number
音量 0-100
音轨
淡入时间
boolean
循环
播放速率
LM.playBgm("test.mp3",100,0,0,true);