Unit Invisibility

[Wietlol]

I dont know if this already exists but in any case, I made this and thought it could also be usefull for other people.

library Invisibility initializer Init uses TimerUtils
    
    globals
        
        private unit CASTER
        private integer INVISIBILITY_ORDER = 852069 // OrderId("invisibility")
        private integer BUFF_ID            = 'Binv'
        
        private timer array t
        
    endglobals
    
    private function callback takes nothing returns nothing
        local integer id = GetTimerData(GetExpiredTimer())
        call UnitRemoveAbility(udg_UDexUnits[id], BUFF_ID)
        call ReleaseTimer(t[id])
        set t[id] = null
    endfunction
    
    public function add takes unit whichUnit, real duration returns nothing
        local integer id = GetUnitUserData(whichUnit)
        
        if t[id] == null then
            set t[id] = NewTimerEx(id)
        endif
        
        if GetUnitAbilityLevel(whichUnit, BUFF_ID) == 0 then
            call IssueTargetOrderById(CASTER, INVISIBILITY_ORDER, whichUnit)
            call TimerStart(t[id], duration, false, function callback)
        elseif duration > TimerGetRemaining(t[id]) then
            call TimerStart(t[id], duration, false, function callback)
        endif
    endfunction
    
    private function Init takes nothing returns nothing
        set CASTER = CreateUnit(Player(15), 'uINV', 0, 0, 0)
    endfunction
    
endlibrary

And ofcourse lua object generation:

//! externalblock extension=lua ObjectMerger $FILENAME$

//      Create caster:
//! i   setobjecttype("units")
//! i   createobject("hfoo", "uINV")
//! i   makechange(current, "uabi", "Aloc,AINV")
//! i   makechange(current, "ucbs", "0")
//! i   makechange(current, "ucpt", "0")
//! i   makechange(current, "umxp", "0")
//! i   makechange(current, "umxr", "0")
//! i   makechange(current, "umdl", "")
//! i   makechange(current, "uprw", "0")
//! i   makechange(current, "ushu", "")
//! i   makechange(current, "uaen", "0")
//! i   makechange(current, "utar", "invulnerable")
//! i   makechange(current, "umvs", "0")
//! i   makechange(current, "umvr", "0")
//! i   makechange(current, "ufoo", "0")
//! i   makechange(current, "usid", "0")
//! i   makechange(current, "usin", "0")

//      Create ability:
//! i   setobjecttype("abilities")
//! i   createobject("Aivs", "AINV")
//! i   makechange(current, "atat", "")
//! i   makechange(current, "ata0", "")
//! i   makechange(current, "areq", "")
//! i   makechange(current, "abuf", "1", "Binv")
//! i   makechange(current, "aran", "1", "1000000000")
//! i   makechange(current, "atar", "1", "invulnerable,vulnerable")
//! i   makechange(current, "ahdu", "1", "0")
//! i   makechange(current, "adur", "1", "0")
//! i   makechange(current, "amcs", "1", "0")

//! endexternalblock

Simply said, you call "Invisibility_add(myTarget, myDuration)" and your unit will be invisible for that duration.
If you already had another invisibility on that unit that lasts longer, then it will just get ignored.

It uses the standard buff but you can use your own if you like.
You just have to set it in either the object editor or in the lua script and set it in the globals.

(Uses TimerUtils and Bribes Unit Indexer.)

 

[Flux]

Why not use Permanent Invisibility so you don't need a dummy anymore, less lua script.
Invisibilty_add is just fugly man, instead of the public keyword, why not remove it and just name it AddInvisibility(unit, duration).

Oh, and JPAG.

 

[Wietlol]

Permanent Invisibility will not be able to be dispelled.

 

[Ceday]

He probably means you can remove ability directly instead of removing buff.

Edit: Nevermind, I just realized using invisibility + dummy is correct way of doing it.