there is two ways to do that, one the old fashion way, or with lua
the vanilla zombies have the old fashion way, the actual code is in Pyro.ini
Code:
AddEffect = AEmitter
PresetName = Jump Light
Mass = 0.0001
HitsMOs = 0
GetsHitByMOs = 0
SpriteFile = ContentFile
FilePath = Base.rte/Null.bmp
FrameCount = 1
SpriteOffset = Vector
X = 0
Y = 0
AtomGroup = AtomGroup
AutoGenerate = 1
Material = Material
CopyOf = Military Stuff
Resolution = 2
Depth = 5
DeepGroup = AtomGroup
AutoGenerate = 1
Material = Material
CopyOf = Military Stuff
Resolution = 3
Depth = 5
DeepCheck = 0
JointStrength = 10000
JointStiffness = 1
DrawAfterParent = 0
AddEmission = Emission
EmittedParticle = MOPixel
CopyOf = Jump Pixel Light
Spread = 0.1
MaxVelocity = 20
MinVelocity = 20
PushesEmitter = 1
/*
BurstSound = Sound
AddSample = ContentFile
FilePath = Base.rte/Effects/Pyro/JetStart.wav
*/
EmissionEnabled = 1
EmissionsIgnoreThis = 1
ParticlesPerMinute = 1
BurstSize = 18
BurstSpacing = 920
BurstScale = 1
BurstTriggered = 1
EmissionDamage = 0
Flash = None
FlashOnlyOnBurst = 0