Attack Speed % Increase

[wd40bomber7]

Say I wanted a 4 second attack to reduce to 3 seconds. What % speed bonus would I add to accomplish this. I can't seem to figure out a relationship between % and actual speed increase in seconds.

I need the equation relating attack speed % bonus and actual cooldown second reduction.

 

[Just_Spectating]

so you have a unit that attacks every 4 seconds? and you want 3.

75%

 

[wd40bomber7]

If only it were that simple. According to my physical tests, a 75% increase makes it go from 4 to 2.87.

Yes I know, completely illogical, but thats the way it works!

 

[Just_Spectating]

so a 100% wouldnt make it to 2 seconds?

well if you can do that, keep on the trial and error.

 

[wd40bomber7]

I don't want trial & error. I want a predictable equation.

Funny enough, your correct. 100% does give it a 2 second attack. So perhaps 100% = half attack speed! Unfortunately I don't have time to look at it right this moment. So this problem will probably have to wait until tomorrow.

 

[Just_Spectating]

75% is -1.13 and 100% is -2.00 lol.... and what would 200% be? -3.00? so from 75-100% its a 0.87 diff, but 25% is -0.38 about.. so 50% = -0.76 about.. so it should be around 60%-70%

 

[Razorbrain]

think of it like this

4.00 seconds cooldown = 1 attack every 4th second

+100% attack speed = 2 attacks every 4th second

+200% attack speed = 3 attacks every 4th seconds

that is how i would put it

 

[Just_Spectating]

ok, then whats 1.75 attacks every 4th second

 

[UreDe4D]

if 100% is 2 seconds then 50% is one second

 

[emperor_d3st]

Nope, there is actually a formula for this. Try to google it up.

 

[wd40bomber7]

It would need to be a negative speed value.

Since 100% = base speed. +100% = double the package. +300% = triple the package.

So -100% would make it twice the speed. To achieve a 3 second speed from 4 seconds, you would need a 50% speed reduction.

Have you ever seen blood lust? It says speed increase not reduction and the unit speeds up.

It doesn't say cooldown increase. It says attack speed increase.

A cooldown increase is an attackspeed decrease and vice a versa.

 

[Vegavak]

I read incorrectly.

From my experience, the speed in the editor generally needs to be reflected as twice the speed you wish to attain. If you want to reduce somethings speed by 10%, you need to reduce it by 20% in the editor. It's just how it works.

When you get to higher percentages, it factors down considerably- since it can never be 0. I don't know what the curve is, unfortunately, but Razorbrain put it most accurately.

 

[wd40bomber7]

I read incorrectly.

From my experience, the speed in the editor generally needs to be reflected as twice the speed you wish to attain. If you want to reduce somethings speed by 10%, you need to reduce it by 20% in the editor. It's just how it works.

When you get to higher percentages, it factors down considerably- since it can never be 0. I don't know what the curve is, unfortunately, but Razorbrain put it most accurately.

Its ok, I've also read things wrong before.

I think I figured it out, and I'm going to go try it.

 

[Vegavak]

Its ok, I've also read things wrong before.

I think I figured it out, and I'm going to go try it.

If you wanted something definitive, all you would need to do is have 2 units and a building.

One buffer with each rank of speed buff, one attacker with the attack speed, and a building with ridiculous HP and regen rate.

Just trigger it to display the time between attacks as a real, and you're golden. That's what I would do.

 

[wd40bomber7]

Ok try to make sense of this.
With a six second attack cooldown.
25% speed increase results in a 4.915 cooldown.
50% speed increase results in a 4 cooldown.
75% speed increase results in a 3.4 cooldown
100% speed increase results in a 3 cooldown.
125% speed increase results in a 2.668 cooldown
150% speed increase results in a 2.42 cooldown.

 

[Vegavak]

Ok try to make sense of this.
With a six second attack cooldown.
25% speed increase results in a 4.915 cooldown.
50% speed increase results in a 4 cooldown.
75% speed increase results in a 3.4 cooldown
100% speed increase results in a 3 cooldown.
125% speed increase results in a 2.668 cooldown
150% speed increase results in a 2.42 cooldown.

When you multiply the speed increase * the new cooldown, they all end up around 6 seconds.

1.25 * 4.915
1.50 * 4.0
etc

They all end up 6 ± .1
Reverse it, do some math, and you reach a BASIC outline for speed reduction/boosts.

So if you end up with a speed of 2 seconds, by a boost of 75%, then you're starting from 3.5 seconds give or take. Understand?

 

[emperor_d3st]

Okay, now watch me do the GOOGLE-magic, yeah.

( 1 + IAS ) / BAT = Attacks Per Game Second
IAS stands for Increased attack speed, BAT stands for Basic Attack Time.

Took 20 seconds searching in google and 1 minute registering on Dota Allstars Forums.

 

[Just_Spectating]

hrmm..
1+.5/4 = 3.75 (50%)
1+.7/4 = 4.25 (70%)

but for now its .25 every second, and we want .75

i dont get how this formula works.

 

[wd40bomber7]

Thanks a lot for finding what I couldn't. I did search on google, but I didn't find anything. Thanks, I checked it out. It appears to work great.

 

[Razorbrain]

i just wondering how the hell you get 1.7 divided by 4 to be 3.75

and i believe its the other way around(atleast that is what i found on google)

BAC / (1 + IAS)

IAS = 100%

4 / 2 = 2

a 100% attack speed increase would(in common sense) increase the amount of attacks during a certain period by 100%, right?

 

[StygianSaint]

i got 33% for 4 sec cooldown to become 3 sec cooldown
.33*3+3=3.99 (close to 4)
but not sure it is work like this in game......way too simple?

 

[wd40bomber7]

Ok try to make sense of this.
With a six second attack cooldown.
25% speed increase results in a 4.915 cooldown.
50% speed increase results in a 4 cooldown.
75% speed increase results in a 3.4 cooldown
100% speed increase results in a 3 cooldown.
125% speed increase results in a 2.668 cooldown
150% speed increase results in a 2.42 cooldown.

This is my previous post. This was determined through triggers, I had no idea of any equation. Technically emporer_d3st's equation is correct for finding the attacks per second. To find the cooldown time, we must reverse it.

6/(1 + .25) = 4.8 ----So my time measure thing wasn't perfect
6/(1 + .5) = 4 --Exactly correct
6/(1 + .75) = 3.42 --Also exact
6/(1 + 1) = 3 --Exact
6/(1 + 1.25) = 2.66 --Very close
6/(1 + 1.5) = 2.40 --Very close

So, yea it works.