SSS Stage1 part3

Stage 1, more enemy formations and enemy bullets.
Now I am trying to make the player bullets type 3.





Enemy formations 1.




Enemy formations 1. Hard difficulty.




Enemy bullets, type 2.





Enemy bullets.




Boss fight warning......
I haven't made the boss yet.
But I think I need to have some rest.





Changelog:
- Added boss fight music.
- Added more enemy behaviors.
- Changed enemy bullet behaviors.
- Changed enemy ship pic replaced with 3d object.
- Fixed enter stage1 doesn't reset all variables.
- Fixed stage1 can't go back to title.
- Fixed enemies respawn and destroy functions.
- Fixed boss fight music fade in.
- Fixed tracing laser movements.