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[MOD]Economy - Hot Mineral Harvesting

Forum Index > SC2 Maps & Custom Games
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BlackLilium
Profile Joined April 2011
Poland426 Posts
Last Edited: 2015-06-26 11:35:57
June 24 2015 08:11 GMT
#1
Udpate 26 June 2015
A solution has been found to bring the basic income equal the Standard HotS/LotV.
The income becomes lower only as a result of reduced efficiency, at higher worker counts.
The article and the graphs have been replaced to match the new mod.

Update 25 June 2015
A solution without triggers have been found. Thank you cacho56!
Also a small tint to hot minerals is now applied to make it more noticeable.

Hot Mineral Harvesting

Forget about Double Harvesting!
Mod "Hot Mineral Harvesting" available in all regions.

Abstract
We present a new harvesting model: Hot Mineral Harvesting (HMH).
When a mineral is mined, the patch becomes "hot", decreasing further harvesting efficiency for a few seconds.
With this mechanism we achieve mining efficiency degradation at 9+ workers, while maintaining optimal worker count per base at 16 and absolute maximum at 24.
However, this model does not rely on unpredictable worker bouncing (Starbow) or harvesting complexity (Double Harvesting)

Preface
Since the release of Double Harvesting mod, it received not only positive reviewes, but also some negative comments and concerns, such as:
  • Worker sits on the mineral patch too long
  • Workers clump up at the patches a lot
  • Workers can be in a hidden partially-mined state. It carries minerals that cannot be returned and looks as if it has none.
  • DH income early game too high, leading to harder cheeses
  • DH efficiency drop is too low

We, as well as some others, tried to tune up the DH mod on multiple occasions.
This was a hard work though, because of peculiar DH problem of sequential and interleaved harvesting.

DH was also trying to have an overall income close to the Standard. This caused early game to have slightly higher income, and late game - lower.
Inadvertently, it lead to many cheese builds that hit earlier and harder, giving less chance for the defender to scout them.

Few days ago we created "Double Harvesting Improved" which tried to solve some of the issues above. It included more triggers and weird behavior and the results were... rather poor.
So we stepped away from DH and searched for a different solution... which lead us to the Hot Mineral Harvesting model.

Problem Statement
So what are our goals exactly? We want an economic model such that:
  • Worker efficiency drops when they are paired (i.e. 9+ workers in a base)
  • Optimal worker count in a base remains at 16
  • Maximum useful worker count in a base remains at 24
  • We want as few changes in worker behavior as possible
  • We don't want to increase the time a worker needs to sit at the mineral patch.
  • We want to avoid worker bouncing if possible, as it is random and ugly.


Solution
Instead of changing the method of mining, we dynamically alter the amount of minerals harvested and time it takes to do so.
After mining, mineral patch becomes "hot" for few seconds.
If another worker mines while the patch is hot, it obtains less resources than usual, and it requires a bit more time to harvest it.
However, if the same worker returns, and there was no one else at the patch, the minerals become "cold" and provide full income.

The solution affects only the mineral patch, not the workers.
This gives much more freedom in terms of balancing.
The solution can also be combined with all previous harvesting models, including LotV, if needed.

Altering the amount of minerals has a limitation coming from integer numbers.
However, by altering the harvesting time as well, this gives much more freedom in balancing HMH.
These alterations have less contraints than DH, making the mod easier to adjust to whatever is needed.

In the mod we release (HMH 5-4) we changed the following
  • Cold patch provides 5 minerals (same as Standard)
  • Hot patch provides 3 minerals (75% efficiency)
  • Return delay increased from 0.5s to 0.6s
  • Cold mineral harvesting time is set to 2.686s (thus 0.6+2.686 matches Standard harvesting time)
  • Hot mineral harvesting time set to 3.17s
  • Gas mining is set to 3 to better match reduced mineral income
  • MULE income per one trip 30 -> 24, to better match normal worker efficiency. Mules should not be affected by hot minerals.



Detail: The hot/cold state to compute the actual amount of harvested minerals is checked when a worker finishes mining (before activating the hot state by itself). However, the time needed to harvest is checked when a worker starts mining. We resolved this through additional state "Warm" (see in implementation)

Testing
We perform testing on 32 bases of standard layout, each having a different worker count. The test was run for 60 minutes.
In a replay, the number of minerals in the patches - at the beginning and end of the test - was counted. The difference gave us the number of minerals mined in each base, separately.
With the same test we compared the previous models: Standard, Starbow and DH 3x3 (TL DH 3x3).

Income
The income of HMH 5-4 matches the Standard in the 1-8 range. There is a slight drop, because you don't want to pair first workers on the closest mineral patches.
The difference become apparent in the 9-16 range. At 16, it becomes 75% of Standard.
[image loading]

It is probably better to compare each income curve when it is normalized: a single-worker base mines "1" in all models, and the rest is scaled apprioprietly.
We can see that the efficiency of HMH 5-4 drops faster than Standard and DH and is almost equivalent to Starbow.
The main difference to Starbow is how it was achieved (hot minerals vs bouncing). Moreover, Starbow has much higher early-game income.
While in the overall Starbow mod this is not a problem, since all units were rebalanced, it is a major problem in standard HotS play, leading to cheese and all-in builds that hit harder and are difficult to scout.
[image loading]

The efficiency 75% at 16 workers is what you have in Starbow, as well as in Broodwar economy.

New Worker Efficiency
The new worker efficiency measures the income benefit from the each added worker.
In the 4-8 worker region the 90% efficiency comes from the distance from mineral patches.
The 8-16 region is the main area which new economy mods try to alter. HMH has an unprecedented stability at ~45% in that region.
Other models have uncontrollable peaks at various spots, because the worker behavior is affected by them and not fully controlled.
The 17-24 region is a bit less important. It's the case when a base is over-saturated, either because you are about to expand, or you just lost a base.
HMH behaves somewhat strangely, with 17th and 18th worker giving no benefit, but higher counts still contribute.
We believe it is related to workers starting to bounce.
[image loading]

Base benefit
These graphs represent the benefit of having more bases with the same worker count.
The percentage value represents how much more minerals you get compared to an opponent with a fewer amount of bases and same number of harvesters.
As expected, all the mods give higher incentive to expand than the Standard model.
In mid worker counts (the most common case), HMH gives consistently higher benefit than DH model, compares well to Starbow and sometimes even exceeds it.
[image loading]
[image loading]
[image loading]
[image loading]

Math behind it
You may skip it if you don't like math
On the other hand, if you want to play with it, e.g. try to find your own HMH balance solution, you may want to type these formulas into an excell sheet.
That's what I did before doing a "field test". Field tests of HMH reflect the math theory very well!

We define the following terms.
The values provided are the defaults in the Standard, and we can change them in the mod
  • A =5 - amount of minerals harvested by a single worker
  • W =0.5s - wait time after the harvest is complete
  • H =2.786s - harvest time
  • HotA - amount of minerals harvested from hot mineral patch
  • HotH - time for harvesting from hot mineral patch
  • T = approx 3.966s - transport time. Function of mineral distance and worker speed, acceleration, turn rate etc. We don't want to change this, as it could affect scouting and combat directly.


Derived terms. These are values we compute.
  • C = W+H+T - total harvesting cycle
  • HotC = W+HotH+HotT - total harvesting cycle
  • MpM = A*60/C - base income of a single worker measured in minerals per minute
  • pMpM = HotA*2*60/HotC - income of two workers paired, measures in minerals per minute. Assumes that workers don't have to wait for each other.
  • Max = HotA/HotH - maximum possible income from a single mineral patch
  • pEff = pMpM / (2 * MpM) - efficiency of paired workers
  • maxEff = Max / (3 * MpM) - efficiency of workers which fully saturate a mineral patch. It is assumed that three workers suffice to fully saturate a patch.
  • pContrib = (pMpM - MpM) / MpM - contribution of a worker when it is joining another one to form a pair.
  • maxContrib = (Max - pMpM) / MpM - contribution of a worker when it is joining a pair to form a triplet, fully saturating a mineral patch.


With Standard we have:
  • C = 7.2524s
  • MpM = 41.4
  • pMpM = 82.7
  • Max = 107.7
  • pEff = 100%
  • maxEff = 86.8%
  • pContrib = 100%
  • maxContrib = 60.3%


With the mod we present here we have:
  • A = 5
  • W = 0.6s
  • H = 2.686s
  • HotA = 4
  • HotH = 3.17s
  • T = 3.966s
  • C = 7.2524s
  • HotC = 7.7364s
  • MpM = 41.4
  • pMpM = 62.0
  • Max = 75.5
  • pEff = 75%
  • maxEff = 61%
  • pContrib = 50%
  • maxContrib = 33%


Changing the ratio of W:H buffs/nerfs the 3 worker (maxContrib). We aimed for a value which would be lower than of 2nd worker (pContrib) but high enough so that it would still be relevant.
If W is too high compared to HotH, it may actually happen that 3rd worker contributes more than the second!

Implementation
Thanks to cacho56, the mod does not use triggers, everything is driven by Effects and Behaviors.
The harvesting time change is applied when a worker starts gathering, but the amount of minerals obtained is checked at the end of harvesting.
This poses a problem. To that end I further expanded upon the original cacho56 idea, making it cleaner and better support the changing in harvest time.

We now have:
  • When a worker gains "Carry Minerals..." behavior it triggers and effect, shooting an invisible line in front of it to find which mineral field it was gathering from.
  • We apply two effects to minerals: "Warm Minerals" and "Hot Minerals".
  • "Hot Minerals" is applied first, with a validator requirement that minerals already have "Warm Minerals".
  • 0.1s later we apply "Warm Minerals" unconditionally.
  • Both "Hot..." and "Warm..." behaviors are temporary and expire after 6.0s.
  • Warm minerals is a hidden behavior which does not alter the harvesting. Its only use is within the validator for "Hot...".
  • Hot minerals apply the harvesting changes as described in this mod.


When only one worker is mining, the effect is triggered every ~7.25s. "Warm Minerals" are gone, and "Hot Minerals" is never applied.
However, when at least two workers are minings, the second one finishes before the 6s mark, reapplying "Warm..." and applying "Hot...".
From that point onward, minerals remain hot until the number of workers drops down to 1 again.

With this approach, minerals never oscilate between Cold and Hot. They are either hot all the time or cold all the time.
With that achieved, it does not matter when in the gathering process the time increase and amount decrease is applied.

Before you try...
We want to strongly encourage you trying the mod. Maybe some new showmatches and tournaments? - would be awesome!
However, before you jump in, be aware, that the income rate above 8 workers (very common case) is lower.
Your build orders will not be as fast. You won't max up so quickly as in Standard.
A saturated 3 base HMH economy gives only a bit more than a saturated 2 base Standard economy.
Your HMH income will never explode as much as in Standard.
HMH encourages not only expanding, but also low-army count fights and - indirectly - scouting.

Acknowledgements
I would like to thank many people to make the topic of economy mods popular.
Special thanks to ZeromuS for making DH popular and maintaining it while I (initially) lost hope for it.
I thank cacho56 for his initial solution on how to make the mod without triggers.
I thank Barrin and Cascade for valuable measurements and simulation.
I thank LaLuSh and SC2John for more experiments and all the discussion we had.
I thank Xiphias and Ahli for their help measuring Starbow.
I thank Bacon_Infinity team - both Nick and Susan - for hosting multiple showmatches on their twitch (http://www.twitch.tv/bacon_infinity), as well as the TL team for the tournament.

I also want to thank all the positive and negative critics regarding the previous mod, as well as the previous version of HMH.
A good critique motivates to make things better and find another solution. Without your input HMH in the current form would never appear.

Finally, I would like to thank the TeamLiquid for making all this possible.
The community here is awesome, and tools are much more convenient than elsewhere to publish and advertise those mods.

Help?
I could use some help on the artistic side.
The hot minerals could use a better icon in the UI (a flame icon perhaps?)
Currently, I change the tint of the minerals when it gets hot, but there could be a better, more localized animation. Tinting looks particularly bad with lab mineral fields, as the mineral frame is tinted together with the minerals themselves.
Send me a PM if you want to do that

Mod usage in other projects
Feel free to incorporate the mod in other projects that you have. Just please let me know that you are doing it.
If possible, I would encourage you to use the mod as a dependency with "latest version" enabled, rather than copy-pasting everything.
This way, if something changes in the mod (e.g. bug fix), it gets automatically propagated to your project.

FAQ
How does compare to LotV model, which is likely to be present?
It is completely orthogonal. You can combine LotV with HMH.

Why not buff low-worker income above Standard, so that high-worker income is not so far below it?
Double Harvesting showmatches, especially the RuFF-vs-Scarlett, showed us that buff to early worker count can lead to cheese and all-ins which hit harder and earlier, making them hard to scout.
[MOD]Economy - Hot Mineral Harvesting
Ingvar
Profile Joined April 2015
Russian Federation421 Posts
June 24 2015 08:18 GMT
#2
How does it work together with 100/60 LotV mineral lines? Blizzard said they liked their current model so at least one should take it into consideration when proposing changes.
MMA | Life | Classic | Happy | Team Empire | Team Spirit
BlackLilium
Profile Joined April 2011
Poland426 Posts
Last Edited: 2015-06-24 08:23:20
June 24 2015 08:21 GMT
#3
On June 24 2015 17:18 Ingvar wrote:
How does it work together with 100/60 LotV mineral lines? Blizzard said they liked their current model so at least one should take it into consideration when proposing changes.

You can combine HMH with LotV, no problem. Those two approaches are completely orthogonal and accomplish different things.

Since overall HMH income is lower, when looking on the clock the LotV system will not rush you to expand so fast. However, when comparing it to army supply, it should be similar.

Blizzard is stubborn. But HMH being a completely different mod, I have hopes that they will have a look on it too.
From political point of view, they can decide to adopt HMH without loosing their face. They can say "We didn't like DH and we were right, but HMH is a different thing".
[MOD]Economy - Hot Mineral Harvesting
LaLuSh
Profile Blog Joined April 2003
Sweden2358 Posts
Last Edited: 2015-07-31 17:06:48
June 24 2015 17:12 GMT
#4
I approve of this.

It achieves the same effect as the other models: a fall-off in efficiency from 8 workers. It's cleaner and simpler than the previous models, if we care about such things -- which Blizzard does.

The numbers could easily be tweaked if you want higher income yields, since Blizzard seem intent on speeding up the rate of economic growth as opposed to slowing it down.

I think you should post this in the teamliquid LotV forum too.
Qwyn
Profile Blog Joined December 2010
United States2779 Posts
June 24 2015 17:34 GMT
#5
You see? You see? I KNEW you guys were working on something special. That's why I had my eyes beyond DH. This is the simplest, cleanest model of all, and it gives even better results.

If Blizzard doesn't test this out they're absolutely bonkers. 12 worker start and HMH? No problem. Matches Starbow and BW economy? No problem.

Beautiful...thank you so much for your work.
"Think of the hysteria following the realization that they consciously consume babies and raise the dead people from their graves" - N0
BlackLilium
Profile Joined April 2011
Poland426 Posts
June 24 2015 17:36 GMT
#6
On June 25 2015 02:12 LaLuSh wrote:
It's cleaner and simpler than the previous models, if we care about such things -- which Blizzard does.


I am trying to make it without triggers at all, but no luck so far.
The "Carry Mineral Field Minerals" is created by the "Minerals (Mineral Field)" behavior.
I was hoping that I could take the "Carry Mineral Field Minerals" and set an "Effect - Initial" to a Apply Behavior "Hot Mineral Field" on the minerals it was created from. If that was possible it would be all!
Unfortunately, none of the Unit references (Caster/Caster Outer/Outer/Source/Target/...) points back to the mineral field

Any other ideas how it could be accomplished? An economy mod without triggers would be really neat!
[MOD]Economy - Hot Mineral Harvesting
Ctone23
Profile Blog Joined December 2012
United States1839 Posts
June 24 2015 18:03 GMT
#7
Just so I understand this a little better. At optimal saturation of 16 workers all mineral nodes become "hot" correct?
TL+ Member
BlackLilium
Profile Joined April 2011
Poland426 Posts
Last Edited: 2015-06-24 18:32:52
June 24 2015 18:31 GMT
#8
On June 25 2015 03:03 Ctone23 wrote:
Just so I understand this a little better. At optimal saturation of 16 workers all mineral nodes become "hot" correct?

Yes, in that scenario all mineral patches become and stay hot as long as all 16 workers keep mining.

Try it yourself. Mod is available, and a hot mineral patch is indicated by a small red icon, which you can see if you select the mineral patch.
[MOD]Economy - Hot Mineral Harvesting
Pontius Pirate
Profile Blog Joined August 2013
United States1557 Posts
June 24 2015 18:55 GMT
#9
Consider setting the yields to 6 and 4, rather than 5 and 4. I think you'll find the efficiency drop is quite significant, comparable with Starbow mining, and the default mining at 12 workers is quite similar to vanilla SC2, leading there to be fewer changes needed than in your mod. I feel that this is a better decision for Hot Minerals 1.1, as you can return Mules to their default value and Gas to its default yield as well.
"I had to close the door so my parents wouldn't judge me." - ZombieGrub during the ShitfaceTradeTV stream
BlackLilium
Profile Joined April 2011
Poland426 Posts
Last Edited: 2015-06-24 19:43:00
June 24 2015 19:05 GMT
#10
I am worried about buffing cold minerals up to 6. Thats 20% more income - more than DH9 had...
DH9 has 13% higher income at low worker counts, compared to Standard. With that small difference, we already saw emerging number of cheese builds that were hard to scout in time, especially in the last RuFF vs Scarlett showmatch. That's why I have chosen to actually go down, rather than up.

Secondly, with the 6-4 configuration, the second line of workers reduce the efficiency to 66.666%. (The hot-to-cold ratio maps directly to efficiency drop). 67% is too much. It means that the second line of workers contribute only 34%.

I am still exploring other posibilities, such as - reducing mining time for hot minerals only. This gives another variable to play with, allowing for better tuning of stuff.

Update: mine time change for hot minerals is not going to work for technical reasons

If we want to maintain the standard income and deal with integers, I came up with a new set of variables:
  • Cold-Hot harvest amount: 8-6
  • Harvest time: 2.786s -> 4.8s
  • Wait time: 0.5s -> 2.8s
  • Total harvest cycle: 7.25s -> 11.6s

It will work. But the time that the worker sits at the minerals is enormous. The major wait time will also look ugly (worker sitting with minerals at the patch for another 3 seconds)

Note: this is all because of the integers - nothing else!
[MOD]Economy - Hot Mineral Harvesting
ShambhalaWar
Profile Joined August 2013
United States930 Posts
June 25 2015 00:10 GMT
#11
Love you for your work on this. I loved the concept of DH and if this is better than awesome job!.

The economy change is the most important change in LOTV in my humble opinion.
Penev
Profile Joined October 2012
28472 Posts
June 25 2015 01:03 GMT
#12
This is very interesting idd. I hope Blizzard will take notice.
I'm sure I won't forget your name again..
I Protoss winner, could it be?
Cascade
Profile Blog Joined March 2006
Australia5405 Posts
June 25 2015 03:23 GMT
#13
I feel you are doing two essentially independent changes here.

1) Hot/cold minerals.
2) Lower average mining rate.

Both seem like good changes, but maybe it'd be good to keep the two separate, to allow for more incremental improvements, and to separate the effects of the two.
BlackLilium
Profile Joined April 2011
Poland426 Posts
June 25 2015 05:01 GMT
#14
On June 25 2015 12:23 Cascade wrote:
I feel you are doing two essentially independent changes here.

1) Hot/cold minerals.
2) Lower average mining rate.

Both seem like good changes, but maybe it'd be good to keep the two separate, to allow for more incremental improvements, and to separate the effects of the two.

I think you are right
This is the same trap Blizzard is doing when nerfing units.... reduce armor and damage and range (Ravager anyone?)

However, this one comes sort of necessity - coming from the problem that minerals are measured in integers. You cannot have 75% of 5. You could have 80%, but that efficiency drop is very close to DH9 and people were complaining that DH is not strong enough. 75% on the other hand is what is in Starbow and BW.
[MOD]Economy - Hot Mineral Harvesting
RoomOfMush
Profile Joined March 2015
1296 Posts
June 25 2015 07:30 GMT
#15
I just wanted to drop in and congratulate you.
You saw that your previous model didnt work out, and instead of trying to bandaid-fix it or trying to talk around it you had the guts to admit failure and go back to the drawing board. This is something that blizzard devs are not capable of.

The idea itself is pretty simple yet effective. But my personal grudge is the lore behind it. Why would the next worker harvest less for a short period of time? Its a change for the sake of balance that makes absolutely zero sense from a casual point of view.
But who cares, right?
BlackLilium
Profile Joined April 2011
Poland426 Posts
June 25 2015 07:55 GMT
#16
On June 25 2015 16:30 RoomOfMush wrote:
I just wanted to drop in and congratulate you.
You saw that your previous model didnt work out, and instead of trying to bandaid-fix it or trying to talk around it you had the guts to admit failure and go back to the drawing board. This is something that blizzard devs are not capable of.

Thank you
I wouldn't say that DH was a total failure. It had its drawbacks, and at that time I didn't see a better solution. We also learned a lot from the showmatches and tournament. However, once I became more familiar with the editor while working on a different mod, I saw a better solution

On June 25 2015 16:30 RoomOfMush wrote:
The idea itself is pretty simple yet effective. But my personal grudge is the lore behind it. Why would the next worker harvest less for a short period of time? Its a change for the sake of balance that makes absolutely zero sense from a casual point of view.
But who cares, right?

I do care about the lore... somewhat....
It is not rare that when something is hot, it performs worse.
Harvesting minerals which are hot may be more difficult, or more hazardous when done for a long period of time. I am sure, some reasoning can be given in SC universe as well. For example:
  • SCV drills overheat and can eventually break. That's why, when drilling hot minerals, you do it at slower rate.
  • Probe's harvesting beam is less efficient when directed towards hot materials
  • Drones don't want to burn their fingers.... err... claws... so they are more careful when gathering hot minerals.

[MOD]Economy - Hot Mineral Harvesting
cacho56
Profile Joined January 2013
8 Posts
Last Edited: 2015-06-25 12:07:46
June 25 2015 11:40 GMT
#17
Here you go (It's based on lurker's attack):

https://www.dropbox.com/s/x3mfl6hojtxrb1t/GatherHot.SC2Map?dl=0

When a worker finishes gathering, it throws a small line forward looking for mineral fields and applies the behavior to them. If the mineral field has the behavior when the next worker finishes gathering, it returns less minerals.

To change the amount gathered and the relation:
Modify the gathered amount from the "Minerals behavior" and the percentage from the Hot Minerals Behavior.

To change the time the buff lasts:
1- Modify the Hot Minerals duration to the desired penalization duration plus the time that takes the unit to gather.
2- Modify the Hot Minerals (dummy) duration to the desired penalization duration plus a small portion of second.
3- Modify the minerals actors new events duration to the same duration of the Hot Minerals (dummy).
BlackLilium
Profile Joined April 2011
Poland426 Posts
Last Edited: 2015-06-25 13:38:04
June 25 2015 13:34 GMT
#18
Thank you very much cacho56!
Your solution, with some changes, is now applied to the mod.

I played with the tinting a bit. Now the effect is applied gradually and is fully visible only when there are 2+ workers accesing the same mineral patch. This should help players take notice and unpair workers were necessary. This should also help getting a quick read on how many workers are actually harvesting. May be particularly helpful when scouting an opponent and noticing if he is doing some 8-worker early aggression or not.
[MOD]Economy - Hot Mineral Harvesting
BlackLilium
Profile Joined April 2011
Poland426 Posts
June 25 2015 14:10 GMT
#19
Bug fix: MULEs now harvest 24 cold minerals and 23 hot minerals.
Previously it was 24/18.
MULEs do not make minerals hot, with an exception of first harvest (some weird bug, probably related to calldown action)
[MOD]Economy - Hot Mineral Harvesting
Xylaire
Profile Joined January 2011
Norway24 Posts
June 25 2015 19:37 GMT
#20
Well, this is certainly an interesting alternative!
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