SC2Mapster

@JacobNielsen:

i have russian localization and some fields may have wrong names(translate English - Russian - English with loses, heh), try similar name.

1. Create Model (Missile_model) with type Missile Effect ans set Model for chosen missile model.
2. Duplicate any missile unit with their actor(missile_unit, Missile_actor)
3. Change "art - model" for duplicated actor on "Missile_model"
4. Create new actor with type:Action, based on Generic Attack (attack_actor)
5. "attack_actor" have 3 separated fields on top Attack Effect, Launch Effect, Impact Effect. Change Launch Effect value to your Launch Effect and Impact Effect to your Damage effect
6. for "attack_actor"
6.1 art-missile = "missile_actor".
6.2 mountpoint - request launch mountpoint = "Head" or "Weapon" or whatever you want - this start point for missile, also mountpoint - request impact mountpoint - endpoint for target.
7. for your weapon
7.1 Interface - damage effect = your damage effect (just for tooltip)
7.2 Effect - Effect = your Persistent effect
7.3 Weapon - Missile Unit = missile_unit
8. for launch effect
8.1 Effect-Effect = your damage effect
8.2 Unit - Ammo = missile unit

also try change movement procedure for missile_unit, some free cool effect

@JacobNielsen

shooting animation must be apply to main unit actor, not to attack actor

event effect.Persistent.start
action AnimPlay (your shooting animation)
 
or if you want play every shoot in persistent

event effect,Search.start
action AnimPlay (your shooting animation)