This should be doable, but my code produces no visible effect in any direction. The character is fixed at about -30 tilt, and the effect is supposed to be a simple beam from his eyes in the direction he is tilted.
Code:

---

.....
vec_for_vertex(vert1,me,455);
vec_rotate(vert1,my.pan);
vec_for_vertex(vert2,me,509);	
vec_rotate(vert2,my.pan);	
effect(photonBeam,1,vert1,velocity);
effect(photonBeam,1,vert2,velocity);
.....

---

I am sure the particles starting positions should be what is being effected and not the velocity, but I can't seem to get anything to make the particles move direction on the characters tilt.

Thanks for your help

-raiden

where is the rest of the effect? maybe the particles get killed too fast.

Try modify your code like the followings :

Code:

---

function photonBeam()
{
   	my.skill_a = -random(5); // any number
	my.skill_b = 0; 
	my.skill_c = 0;

	vec_rotate(my.skill_a,you.pan);
 	vec_add(my.vel_x, my.skill_a);
 	
	my.move = on;
        my.size...
        my.bright...
        my.beam...
        .......
        .......
}  

vec_for_vertex(vert1,me,455);
//vec_rotate(vert1,my.pan);
vec_for_vertex(vert2,me,509);
//vec_rotate(vert2,my.pan);
effect(photonBeam,1,vert1,velocity);
effect(photonBeam,1,vert2,velocity);

---

your 'velocity' vector value your passing is an ABSOLUTE direction/velocity vector.

I don't see you doing any direction vector calculation from vert1 to vert 2 ( im assuming you want the beam to move from vert1 to vert 2 direction here)
and storing that into 'velocity'

so i think that may be your problem

Sorry for getting back so late on this, thank you both for the responses.

@vlau, your code worked perfectly, thank you.

@Grimber, that was my confusion, I was not sure if I was supposed to orient the start position of the particles, or the velocity, it's clear now that the velocity has to be directed in the angle directions for my effect.

Thanks again.

-raiden