Faeryade
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Posted - 2007.08.20 18:05:00 -
[1]
...and get the best transactions if possible!
Here are some maths I coded:
Bo : buy order, the one I'll sell things to
So : sell order, the one I'll buy things from
Bo.price : the price for one unit I'll sell
So.price : the price for one unit I'll buy
Bo.units : the number of units the buyer wants to buy
So.units : the number of units the seller wants to sell
Unit.volume : the volume taken by one unit of merchandise
Unit.benefit : the benefit per unit I'll get from the transaction, where
Unit.benefit = Bo.price - So.price
Me.cargo : the space I have in my ship
Me.cash : the cash I have in my wallet
MaxUnitsTrans : the max number of units for the transaction, where
MaxUnitsTrans = Min(Bo.units,So.units)
MaxUnitsCargo : the max number of units I can carry, where
MaxUnitsCargo = Me.cargo / UnitType.volume
MaxUnitsCash : the max number of units I can buy from the seller, where
MaxUnitsCash = Me.cash / So.price
MaxUnits : the max number of units I'll buy and sell, where
MaxUnits = Min(MaxUnitsTrans,MaxUnitsCargo,MaxUnitsCash)
Total.benefit : the real cash I can get from the transaction, where
Total.benefit = MaxUnits * Unit.benefit
I could have stopped here, but... what if I compare all Bo-So pairs and find these transactions:
- Benefit 2M 
- Benefit 1,8M 
Well, let's go for the 2M!  Yes? ... Let's see what could be hidden:
- Benefit 2M, 20 jumps between Bo and So
- Benefit 1,8M, 3 jumps between Bo and So
Now let's go for the 1,8M, sure! So let's do the maths a little more.
Dist(Bo,So) : the distance (in jumps+1) between Buyer and Seller
Total.benefitOverTime : the real cash for a jump, where
Total.benefitOverTime = Total.benefit / Dist(Bo,So)
So, what if I get the following transactions ?
- Benefit 150k / jump
- Benefit 120k / jump
Let's go for the 150k! Wait... ok, what's hidden there again?
- Benefit 150k / jump, distance between me and So (lost time) 20 jumps
- Benefit 120k / jump, distance between me and So (lost time) 3 jumps
So let's add some maths again.
Total.theFinalBenefitOverTimeThing : ok, that's what I'll use to compair pairs of So and Bo
Total.theFinalBenefitOverTimeThing = Total.benefit / (Dist(Me,So)+Dist(Bo,So))
This, computed for every pair the market offers, then sorted, gives me where I should go next. I could add a second step that gives me the best transaction between Me and So, not to travel with an empty cargo.
So what do you think about these maths?
And what would you think about a program that makes such analyze?
Or is EVE Market more complex?
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