Question: Vector vs. Bitmap

Hi, it’s been about a year since I last seriously used flash and actionscript so I’m a little rusty yet. When I used to use it I would always use movie clips for games and such. Yesterday I read the post about movie clips vs. bitmaps a little but the concepts on how to do it weren’t clicking; although I understand the logic in using bitmaps over vectors.

http://webpages.charter.net/tropico/Concepts.html

As a little test I made this little movie. Just click on screen to fire a waves of missiles for each click. The missiles and streaks are all movie clips attached to the stage. I don’t know if I made the streaks as efficiently as they could be. Just a movie clip with a short tween that removes itself at the end. You can see that it starts to bog down pretty fast. With the game I’m making there’s the potential for a lot of objects to be on the screen at one time so I would like to learn how to recreate this movie using bitmaps instead of vectors instead to help increase performance. If anyone could point me in the direction of some useful tutorials or overall performance tips that would be great :te: