Yes, I believe it is the same effect. The Gauss Gun in HL uses this effect
to make those glowing balls when you shoot at or through a wall.
Code:
#define TE_SPRITETRAIL 15 // line of moving glow sprites with gravity, fadeout, and collisions
// byte (TE_SPRITETRAIL)
// coord, coord, coord (start)
// coord, coord, coord (end)
// short (sprite index)
// byte (count)
// byte (life in 0.1's)
// byte (scale in 0.1's)
// byte (velocity along vector in 10's)
// byte (randomness of velocity in 10's)
Set the end z co-ord above the start position to get sprites that shoot
upwards and play around with the last two message byte args to set the
speed and randomness of the effects.
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