arcade mode music!

vacation.p8

@@ -1481,7 +1481,7 @@ mknew(arcade_level, function(x)
 end)
 
 function arcade_level:av()
- -- TODO: fade in level music
+ music(0,1000,7)
  font_compact()
 end
 
@@ -1498,6 +1498,10 @@ function arcade_level:u()
   self.phin.exiting = true
  end
  if self.phin.x > 90 then
+  if not self.mstp then
+   self.mstp = true
+   music(-1,800)
+  end
   if (self.d:u()) seq:next()
  end
  self.v:u()