Meteor Game help!!

[csj1]

I am trying to make a game in which you have to defend the city against a bombardment of meteors, pretty simple, however, if a meteor hits the city then i want the screen to shake, how would i do something like this? Also, I am using the mouse to destroy the meteors, so what would i do to leave a simple trail following the mouse for like 100 pixels (or somehting like that), but not stay there forever?

[Jacob]

If youre going to ask a question, do it once, not twice, especially when you get an answer.

For the shaking, what I'd do is I'd have a global value called the shakeValue. Whenever a meteor hits, add... oh let's say 100 to that value. Then you move the screen to: (subtract 1 from shakeValue 'always')
Xscreen + Cos(random(360)) * (shakeValue/10)
Yscreen + Sin(random(360)) * (shakeValue/10)
and Xscreen and Yscreen are the coordinates of the point you want the screen to center on (just be sure you have enough room bordering the visible area to be seen when you shake, mmf2 won't scroll outside the frame).

And about the mouse thing, are you trying to make it so the mouse will draw something, and when it reaches a certain length, start chopping off the end to make room for the new stuff?

[Guitaristinmakin]

Here an example that should answer your questions.
http://www.mediafire.com/?mjnxasgh1mp

[csj1]

thanks so much

[Dynamite]

I usually get a hidden object with a crazy path movement. When the screen needs to shake I make the x an y scrolling to look at the object with the crazy path movement. Although that is a pretty bad way of doing things