Emitting particles one by one ... 2003-12-12 - By garyc
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Hi John, right, I setup the "emit" command in my expression and it works
just fine, I have taken the position data from a null that I have parented
to the gun barrel, so I have the particles starting off in the right place.
My only problem (well be it more a lack of knowledge) is how can I get a
vector (i.e. a direction) for the particle when the barrel is moving around.
Like I say I currently have a null parented to the barrel that gives me the
position but I have the particle vector set to <0,0,50> so my particles
always shoot off down "z" regardless of the guns orientation. Is there some
way I can generate a correct vector from the same null that gives me my
position, its "z" axis always (as its parented) points the right way, I just
need that as a vector to plug into the emit command.
PS: sorry if this is a no brainer questin for the maths guys out there, I am
just trying to get my head around the maths thats goes with Maya ;)
cheers gary.
> Best bet is the "emit" command. set up an expression that gets the
direction of the gun and
> positon, for the velocity vector of the particle and muzzle position.
>
> then plug those numbers into the expression with the emit command to emit
a particle
> per frame.
>
> if you want more than one "shot" per frame (machine gun)
> you can offset the position of the "bullets" up and down the velocity
vector with some
> random value. and loop on the emit command
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