Postby HeroLinik » Fri Aug 01, 2014 11:03 am
You mean a standard Boom Boom/Birdo/Bowser boss? That's really easy.
Select the boss, open the Advanced window and then where it says "Legacy Boss" set that to Yes. As soon as the player approaches a boss with that assigned to it, the boss music will start playing. However, this only works with Boom Boom, SMB3 Bowser and Birdo. If you want to make a boss fight using a different boss like Larry or Mouser, you'll have to make an event that changes the music to suit the boss battle, and put that event under "Activate" in the Events window when you select the boss.