Missile trail

[Vinlan]

Anyone got a tricks or codes to stimulate missile
trail in 3D lingo Particles?


Thanks.

[nick kang]

Set the emitter.mode = #STREAM, and the emitter.loop = TRUE, then set the
emitter.region = [tail position of your missile] with each frame step (notice
it's a list of vectors, you only need 1]. This way the trails will diminish in
a fixed position in worldspace, much like the rocket smoke in Q3. You'll need
to tweak all the other particle system resource and emitter settings to your
liking.

[Vinlan]

Thanks Nick.

But how can I control the missile trail to follow the
flying path of the missile, I want my missile flying
in a curved path.

Thanks again.


"nick kang" <webforumsuser@macromedia.com> ¼¶¼g©ó¶l¥ó
news:ccdqiv$jqn$1@forums.macromedia.com...

> Set the emitter.mode = #STREAM, and the emitter.loop = TRUE, then set the
> emitter.region = [tail position of your missile] with each frame step

(notice

> it's a list of vectors, you only need 1]. This way the trails will

diminish in

> a fixed position in worldspace, much like the rocket smoke in Q3. You'll

need

> to tweak all the other particle system resource and emitter settings to

your

> liking.
>

[nick kang]

The above example will result in a trail will conforms to the flight path of
the missile, since you are constantly changing the emitter.region to the
position of the missile. If you were to set the position of the particle
system model to the missile position (or attach the particle system to the
missile), then the trail would look artificially stiff, if the missile had a
curved path. Just leave the particle system model position at vector(0,0,0).

You may also want to look at building a mesh on the fly for anime-style
missile trails, like these:
[url]http://earthwormjim.free.fr/demo/index.html[/url] (try the Homing demo)

[Vinlan]

nick,

Thanks for your help. I also found my solution at

[url]http://www.xonko.com/Shockwave3DLab/learn/tute_particle_thrustor.htm[/url]




"nick kang" <webforumsuser@macromedia.com> ¼¶¼g©ó¶l¥ó
news:ccg4up$l8a$1@forums.macromedia.com...

> The above example will result in a trail will conforms to the flight path

of

> the missile, since you are constantly changing the emitter.region to the
> position of the missile. If you were to set the position of the particle
> system model to the missile position (or attach the particle system to the
> missile), then the trail would look artificially stiff, if the missile had

a

> curved path. Just leave the particle system model position at

vector(0,0,0).

>
> You may also want to look at building a mesh on the fly for anime-style
> missile trails, like these:
> [url]http://earthwormjim.free.fr/demo/index.html[/url] (try the Homing demo)
>
>