[Add] Music now plays constantly.

snd/music.lua

@@ -21,15 +21,24 @@ function choose(str)
     music.load("liftoff")
     music.play()
 
+  elseif str == "ambient" then
+    music.load("machina")
+    music.play()
+
   elseif str == "combat" then
     music.load("galacticbattle")
     music.play()
 
   elseif str == "idle" and last ~= "idle" then
-    choose(last) -- This should be smarter in the future.
+    -- We'll play the same as last unless it was takeoff.
+    if last == "takeoff" then
+      choose("ambient")
+    else
+      choose(last)
+    end
   end
 
-  if last ~= "idle" then
+  if str ~= "idle" then
     last = str -- Save the last string so we can use it.
   end
 end