[JASS] Need help creating a function

[Megafyr]

I want to make a function that fades in a unit. I currently have this:

function fade takes unit u returns nothing

local integer i = 0

    loop
    
    set i = i + 4

    call SetUnitVertexColor(u, 255, 255, 255, i)
    call TriggerSleepAction(0.03)
    
    exitwhen i > 255
    
    endloop


endfunction

Will this stack if I call this function on multiple units simultaniously? If not, how can I create something equivalent?

 

[Mr_Bean]

Does this script work? I think using TriggerSleepAction isn't too good, so you should use a struct with timers if you want it to work for multiple units at the same time.

 

[PurgeandFire]

It will work on multiple units but it may not have the result you want. It will look a bit choppy because of the triggersleepaction. The best results would come from using a timer.

Requires jasshelper:

globals
    hashtable fadeHash = InitHashtable()
endglobals

function fadeApply takes nothing returns nothing
    local timer t = GetExpiredTimer()
    local integer i = LoadInteger(fadeHash, GetHandleId(t), 1) + 4
    
    if i <= 255 then
        call SetUnitVertexColor(LoadUnitHandle(fadeHash, GetHandleId(t), 0), 255, 255, 255, i)
        call SaveInteger(fadeHash, GetHandleId(t), 1, i)
    else
        call FlushChildHashtable(fadeHash, GetHandleId(t))
        call PauseTimer(t)
        call DestroyTimer(t)
    endif

    set t = null
endfunction

function fade takes unit u returns nothing
    local timer t = CreateTimer()
    call SaveUnitHandle(fadeHash, GetHandleId(t), 0, u)
    call SaveInteger(fadeHash, GetHandleId(t), 1, 0)
    call TimerStart(t, 0.03, true, function fadeApply)
    set t = null
endfunction

Of course, this can be improved through the use of structs and timer systems etc.. But this should work fine.

 

[Megafyr]

Thanks alot! Thank was exactly what I needed.