Adding Special Effect when a Unit Attacks

[Jake Command Wolf]

Basically what I want accomplish is to add a muzzle flash special effect every time a unit carrying a machine gun fires his weapon.

I've seen it done in at least a few maps, and the open source one I looked at showed it was done with JASS. I don't understand JASS for the life of me, but here’s the JASS text from trigger creating the weapon effect(s):

JASS Text

//TESH.scrollpos=0
//TESH.alwaysfold=0
library GunFlashes initializer Init requires GlobalFuncs
//TRIG: FI, Cond: dq, Func: kq
    
    private function Conditions takes nothing returns boolean
      local unit u=GetAttacker()
      local player p=GetOwningPlayer(u)
      local integer index=GetPlayerId(p)+1
      if IsPlayerInForce(p,PLAYER_JAMMED)==false and IsPlayerInForce(p,BURST_WAIT)==false and IsUnitInGroup(u,NADING)==false and IsUnitInGroup(u,SAFETY)==false and IS_LINKING_BELTS[index]==false and CURRENT_AMMO[index]>0 or IsUnitType(u,UNIT_TYPE_HERO)==false then
        set u=null
        return true
      endif
      set u=null
      return false
    endfunction

    private function Actions takes nothing returns nothing
      local unit u=GetAttacker()
      local integer id=GetUnitTypeId(u)
      
      if id=='H000' or id=='H011' or id=='H00J' or id=='H00I' or id=='H00C' or id=='H00D' then
        call DestroyEffect(AddSpecialEffectTarget("war3mapImported\\Gunshot Effect.MDX",u,"weapon"))
      endif
      if id=='H001' or id=='H00P' then
        call DestroyEffect(AddSpecialEffectTarget("war3mapImported\\MachineGunEffect.MDX",u,"weapon"))
      endif
      if id=='H008' or id=='H01I' then
        call DestroyEffect(AddSpecialEffectTarget("war3mapImported\\SMG Gunshot.MDX",u,"weapon"))
      endif
      if id=='H00H' and GetUnitAbilityLevel(u,'A074')==0 then
        call DestroyEffect(AddSpecialEffectTarget("war3mapImported\\SniperEffectAttachment.MDX",u,"weapon"))
      endif
      if id=='H00N' then
        call DestroyEffect(AddSpecialEffectTarget("war3mapImported\\ShotgunEffect.MDX",u,"weapon"))
      endif
      
      set u=null
    endfunction

    
    // Initializer
    private function Init takes nothing returns nothing
        local trigger T = CreateTrigger()
        call TriggerRegisterAnyUnitEventBJ(T,EVENT_PLAYER_UNIT_ATTACKED)
        call TriggerAddCondition(T,Condition(function Conditions))
        call TriggerAddAction(T,function Actions)
    endfunction
    
endlibrary

I'd greatly appreciate if someone could show me how do this with MUI (If its possible) and how to do it with more than one type of gun flash, for the moment all of the units in my map carry fixed weapons attached to their models.

Any help would be wonderful.

 

[WaterKnight]

• Events
  • Unit - A unit Is attacked
• Conditions
• Actions
  • Special Effect - Create a special effect attached to the weapon of (Attacking unit) using <modelPath>
  • Special Effect - Destroy (Last created special effect)

 

[Jake Command Wolf]

Ahah! It had to be that simple huh? Thats thinking with with triggers! Many thanks WaterKnight, you also helped me solve another problem I've having with another ability, so thats for that too!

 

[Arhowk]

Yeah thats what that JASS trigger is doing