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The XP algorithm...


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TheEye73 #1 Posted 10 May 2019 - 10:09 AM

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Many times I have wondered how xp were calculated after a game - but I still haven't found the answer...

E.g.:
Today I played my Bishop (t5 british spg).
I came into a t7 game on "Airfield" - no worries since the enemy spg was also a Bishop.

There was an O-Ni in my team - top tier HT - and this is where I get confused about the xp algorithm...

Stats from the game (I didn't get a screen dump):
                 Damage          Shots fired   Hits / pen / splash        XP

             (own/assisted) 
O-Ni    : 271 / 226                   4                 3 / 1 / 0                 430
Bishop: 593 / 0                      21                6 / 0 / 12               421

I don't get it - I do more damage, I'm playing a two tier lower spg, but still I get less xp...?
 



Brownape #2 Posted 10 May 2019 - 10:15 AM

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lots of reasons, distance, spotting, tier, assistance. it is what it is, chill and push button again

Kozzy #3 Posted 10 May 2019 - 10:17 AM

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You split the XP gained for damaging an opponent with the person spotting that opponent.  There are also modifiers based on how close the damage was done, I believe, to reward heavies brawling etc.  Hence SPGs get very low XP compared to most other classes.

arthurwellsley #4 Posted 10 May 2019 - 10:22 AM

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View PostTheEye73, on 10 May 2019 - 09:09 AM, said:

Many times I have wondered how xp were calculated after a game - but I still haven't found the answer...

E.g.:
Today I played my Bishop (t5 british spg).
I came into a t7 game on "Airfield" - no worries since the enemy spg was also a Bishop.

There was an O-Ni in my team - top tier HT - and this is where I get confused about the xp algorithm...

Stats from the game (I didn't get a screen dump):
                 Damage          Shots fired   Hits / pen / splash        XP

             (own/assisted) 
O-Ni    : 271 / 226                   4                 3 / 1 / 0                 430
Bishop: 593 / 0                      21                6 / 0 / 12               421

I don't get it - I do more damage, I'm playing a two tier lower spg, but still I get less xp...?

 

detail here = http://wiki.wargamin...nce_and_Credits

 

* Damage you spot yourself = Per point of damage, modified by victim's tank type and tank tier compared to your own (damaging higher tiers pays more).

 

* Damage that another team member spotted = 50% of the above



Geno1isme #5 Posted 10 May 2019 - 10:29 AM

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The exact algorithm is secret (for good reason, else people would try to exploit it). But there are lots of factors going into it, and not all are visible in the Post-Battle results. And of the data you provided, only damage+assist is actually relevant, but many other relevant factors (kills, firstspots, what targets, fight distance, ...) are missing.

 

View PostTheEye73, on 10 May 2019 - 11:09 AM, said:

I don't get it - I do more damage, I'm playing a two tier lower spg, but still I get less xp...?

 

In arty you usually don't spot targets by yourself, so 50% of your damage XP is transferred to whoever was doing the spotting. So it's quite possible that some of the O-Ni's XP actually come from you doing damage to targets spotted by him.

 

Also you generall shoot at targets more than 200m away, so you don't get the XP bonus for close-quarters combat. And when you're just shooting at targets of the same tier you're not getting an XP bonus for the tier difference, being low-tier doesn't grant more XP by itself.



jack_timber #6 Posted 10 May 2019 - 11:58 AM

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As far as XP and credit income calculations go I reckon the formula has a fair mix of smoke and mirrors....

geoff99 #7 Posted 10 May 2019 - 01:01 PM

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View Postjack_timber, on 10 May 2019 - 10:58 AM, said:

As far as XP and credit income calculations go I reckon the formula has a fair mix of smoke and mirrors....

 

Absolutely. From a business point of view you want the credit multiplier to be high when new premium tanks are released to encourage sales, and then lower the multiplier when purchases have peaked to encourage players to stop playing the tank and move on the next new premium. You need to be a bit canny about how you do it though. Make it obvious and you'll just annoy the players. But definitely worth keeping the credit multipliers secret and discourage conversations about them.



vasilinhorulezz #8 Posted 10 May 2019 - 01:27 PM

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There are factors like, who's spotting for you (if you spot your own targets you get the whole xp, if someone's spotting for you, you split the xp between you), shots that are made in less than 300m give more xp, shooting same lower tier targets give less xp, shooting higher tier targets give more, and so on. There are a lot of stuff to calculate, still, we don't know the exact formula of xp gains.

Dorander #9 Posted 10 May 2019 - 05:57 PM

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Beyond the known mechanics from the wiki, I've personally developed the theory that being agressive is more rewarding than "sniping", and I don't mean because of the shared reward for spotting for others. I mean that I suspect the first-spot xp bonus is pretty significant, as significant as getting a kill, and that the bonus for fighting in close range is a lot more impactful than some might suspect.

 

I tend to be quite agressive, up to the point of suicidal overconfidence, and I frequently notice that even if I die early (like 1-2 minutes early) with only a little and assisted damage, I'm on the upper half of the experience list 'cause I've usually spotted 3-4 opponents and did all my damage at close range.



TheEye73 #10 Posted 10 May 2019 - 11:54 PM

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View PostBrownape, on 10 May 2019 - 10:15 AM, said:

lots of reasons, distance, spotting, tier, assistance. it is what it is, chill and push button again

 

Really a usefull answer...

Please - do me the favour not to reply at all!
 

22:56 Added after 2 minutes

View Postarthurwellsley, on 10 May 2019 - 10:22 AM, said:

 

detail here = http://wiki.wargamin...nce_and_Credits

 

* Damage you spot yourself = Per point of damage, modified by victim's tank type and tank tier compared to your own (damaging higher tiers pays more).

 

* Damage that another team member spotted = 50% of the above

 

Well... "(damaging higher tiers pays more)"
I thought that too - but I only shot at higher tiers (T29, IS, T-34-85, Type 64 etc...)

So not quite correct, I guess.
But thank you for the link. :-)

Edited by TheEye73, 10 May 2019 - 11:58 PM.


Jigabachi #11 Posted 11 May 2019 - 12:06 AM

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View PostTheEye73, on 10 May 2019 - 11:54 PM, said:

Well... "(damaging higher tiers pays more)"
I thought that too - but I only shot at higher tiers (T29, IS, T-34-85, Type 64 etc...)

So not quite correct, I guess.
But thank you for the link. :-)

As stated before (the first answer mentioned that, too), damage isn't the only variable in the calculation...



Balc0ra #12 Posted 11 May 2019 - 12:51 AM

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View PostTheEye73, on 10 May 2019 - 11:54 PM, said:

 

Really a usefull answer...

Please - do me the favour not to reply at all!

 

Well, he is not wrong either. There are many, many factors deciding XP. Inc everything he listed. Thus why 1000 damage is not gonna be the same for everyone each game.

 

But when you play arty. You do 99.99% of the damage on others spotting. Thus you lose 50% XP pr damage point. O-Ni is doing damage on his own spotting, or targets at close range. So he doesn't share the XP with anyone, and gets a brawling bonus. That and he could also have gotten a flat bonus for first spots etc. Something you won't get in an SPG.



Brownape #13 Posted 11 May 2019 - 10:31 PM

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View PostTheEye73, on 10 May 2019 - 11:54 PM, said:

 

Really a usefull answer...

Please - do me the favour not to reply at all!

 

Dude you asked a question that's been asked 100s of times before on here.

 

 If, after 40k games you still struggle to comprehend the obvious aspects of experience distribution, or have the inability to read, then you do indeed need help and should go back to the newcomers section or be content with my pithy replies 


Edited by Brownape, 11 May 2019 - 10:32 PM.


Homer_J #14 Posted 12 May 2019 - 12:34 AM

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View PostTheEye73, on 10 May 2019 - 10:09 AM, said:

Many times I have wondered how xp were calculated after a game - but I still haven't found the answer...

 

 

And you won't so don't bother trying.

 

You get some for your actions, some for how well your team destroy the enemy team, and some for how much you were "in" the action.  Exact values are a secret and we aren't even sure WG know.






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