Does Pow() create excessive proseccor drain?

afisakov

You can change this now in User CP.
I was making an ability that doubles every level and I though the easiest way was to use exponents.
I ended up with a damage function that I posted below.
This trigger activates on attack and has 15 possible levels. My question is is it ok to keep it as an exponent function to calculate each time or do I have to create an array to hold the values for each lvl and reference those to save on computer resources.

Does anyone know how the processor load of a calculation like 2048*1.05^15+100*2^15 compares to creating and destroying a special effect?
Code:
function gtson takes nothing returns boolean
    return UnitHasBuffBJ(GetAttacker(),'B013')
endfunction
 
function getsu_slash takes nothing returns nothing
local integer gbl
call TriggerSleepAction(0.1)
if gtson() then
    set fint1=rcount(GetAttacker())
    set gbl=GetUnitAbilityLevel(GetAttacker(),'A0VI')
    if(GetRandomInt(1,10)<=3+fint1)then
        set tp1=GetUnitLoc(GetAttackedUnitBJ())
        set dx=(I2R(GetHeroStr(GetAttacker()*gbl))*Pow(1.05,gbl)+125*Pow(2.,gbl))*ab1(GetAttacker())/2.
        call hitaoe(GetAttacker())
        call UnitDamageTargetBJ(GetAttacker(),GetAttackedUnitBJ(),dx,ATTACK_TYPE_NORMAL,DAMAGE_TYPE_MAGIC)
        call DestroyEffect(AddSpecialEffectLocBJ(tp1,"Abilities\\Spells\\Orc\\FeralSpirit\\feralspirittarget.mdl"))
        call DestroyEffect(AddSpecialEffectLocBJ(tp1,"Abilities\\Weapons\\PhoenixMissile\\Phoenix_Missile_mini.mdl"))
        call RemoveLocation (tp1)
    endif
...other stuff here
endfunction
Thank you for the assistance

P.S. how do I fix the spelling in my title? (not sure how to edit it)
 

kingkingyyk3

Visitor (Welcome to the Jungle, Baby!)
Maths operation in War3 is quite slow.
In another way to make the spell work, you can make an integer array, store the data up in initialization function. When the spell is cast, simply use the data in array. It consumes more memory but less hogging to available raw power.
 

afisakov

You can change this now in User CP.
Maths operation in War3 is quite slow.
In another way to make the spell work, you can make an integer array, store the data up in initialization function. When the spell is cast, simply use the data in array. It consumes more memory but less hogging to available raw power.
I was afraid of that. Thanks for the response though.
 

dracolich

TH.net Regular
not so bad. default operators - + / * works fine, but Pow - its recursive function (loop). and since function call takes much more time, and also looping is pretty slow, using inline constructions would make it better.
just like:
if lvl==2 then
set dmg=str*str
elseif lvl==3 then
set dmg=str*str*str

but remember that excessive if-else-endif also takes time. need a check to get where they would equal in time spending.
 

afisakov

You can change this now in User CP.
What I ultimately went with is this:
Code:
set gbl=GetUnitAbilityLevel(GetAttacker(),'A0VI')
set dx=(I2R(GetHeroStr(GetAttacker(),true)*gbl)*getbarS[gbl]+getbarF[gbl])/2.

function Getbarreals takes nothing returns nothing (runs on init)
local integer loop1=0
loop
set loop1=loop1+1
set getbarS[loop1]=0.75*Pow(1.04,loop1)
set getbarF[loop1]=250.*Pow(2.,loop1)
exitwhen loop1>15
endloop
endfunction
I figure this way I can save the formula as real numbers and then just call a real, hopefully that is fastest way to do it, even if it takes a bit more programming to write.
I assume the drain from loops is negligible if it only has to run them once.
 

Slapshot136

Divide et impera
not so bad. default operators - + / * works fine, but Pow - its recursive function (loop).
you realize computers also do multiplication and division via loops, right? and if you get down to it, even addition/subtraction ends up being a loop process
 

Imp Midna

Active Member
at least that 'loop' would have O(1), not the O(log(n)) of pow, so i wouldn't actually call that a loop imao
 

chobibo

Level 1 Crypt Lord
The real problem on your script is not the pow usage, it's your use of BJs.
Anyway, I remember having read on wc3c.net that pow is worthwhile to use if the exponent is greater than 2.
 
General chit-chat
Help Users
  • No one is chatting at the moment.
  • tom_mai78101 tom_mai78101:
    Question: Is there a way to remove thread redirects? It creates a copy of the moved thread and takes up space, and I am leaning towards wanting to remove them in the Headline News. But if they have an expiration date, I guess I'm fine with it.
  • The Helper The Helper:
    If you move a thread please leave a permanent redirect. You can delete any redirects after 6 months. The redirects are left to help Search Engines find the moved content.
  • tom_mai78101 tom_mai78101:
    What if you move the permanent redirect, not the thread?
  • The Helper The Helper:
    I think that works but I have not messed with it. You can delete redirects though if you have to that will not delete the original thread
  • The Helper The Helper:
    if a redirect ends up in the same forum as the post it goes to though I think the redirect drops or fails or something but they are not bugged out and when you are working on an indirect the original post is safe.
  • The Helper The Helper:
    Happy Early Friday :)
    +1
  • V-SNES V-SNES:
    Happy Friday :)
  • tom_mai78101 tom_mai78101:
    Fun Friday for me
  • tom_mai78101 tom_mai78101:
    Happy Fun Friday to all.
    +2
  • The Helper The Helper:
    Happy Sunday everyone!!!
  • V-SNES V-SNES:
    Happy Sunday!!!
    +1
  • jonas jonas:
    Happy monday :p
  • jonas jonas:
    Everyone hates mondays?
    +1
  • The Helper The Helper:
    Happy Tuesday!
  • jonas jonas:
    Happy belated tuesday
  • tom_mai78101 tom_mai78101:
    I found out you can't delete nor hide redirect links to existing threads. It will just stay there. I have no choice now but to start moving thread redirects to News Archive.
  • The Helper The Helper:
    That is not the way that it works for me I can delete redirects you just have to hit refresh sometimes big deletes will take a while as long as moves\
  • The Helper The Helper:
    You don't have to do that you can just leave stuff there in headline news for up to a year it was already down to like 8 months there is no rush.
  • The Helper The Helper:
    We need to do something about the Headline News forum now that Ghan got the News script to work on the forums. We need an Other category really now more than we need a headline news forum full of redirects
  • The Helper The Helper:
    wow i just noticed there are no redirects left in Headline news lol!
  • The Helper The Helper:
    so much for the redirects I think they are useless anyway because posts urls are set and the redirects were just extra if something is indexed by the search engine it still will be without the redirect since the original url does not change
  • tom_mai78101 tom_mai78101:
    I was wondering if it'd be best to consolidate all of the Headline News threads into 1 place, and then let the users click on navigation links that would show/hide threads based on their thread flairs? Splitting the Headline News up like this would mean the only way to see all of the news is to go to the Home page and check there.
  • jonas jonas:
    I usually just browse the homepage for news
  • tom_mai78101 tom_mai78101:
    Good to know.

    Members online

    No members online now.

    Affiliates

    Hive Workshop NUON Dome World Editor Tutorials

    Network Sponsors

    Apex Steel Pipe - Buys and sells Steel Pipe.
    Top