SSS Stage1 part7

    I'm a little busy this week so I didn't have much time on this project. I only changed enemy bullets function and added a boss behavior. There are some minor flaws, not easy to fix, I will do what I can and I have to modify the game difficulty if I want to release new version demo. 

  Normal charged shot now it consumes 1/4 energy per-shot. More powerful cost more bullets.

  Circle bullets type 2.

  Boss fight phase 1.

  Boss fight phase 2.

  Game over and player ran out of continues.

- Added stage1 boss phase2
- Changed player normal charged shot function.
- Changed charging time reduced.
- Changed enemy bullets system.
- Fixed some null variable error.
- Fixed continue game now it works.
- Fixed charged laser collision range.