Kategorie Diskussion:Handelseinheiten (Civ2)

Thoddy Basic Formula

Roundown ((BTA of SC + BTA of DC + 1) * (D +10) * FD / 48.5)

BTA = Base Trade Arrows SC = Source City DC = Destination City D = Distance FD = Foreign Delivery

Base Trade Arrows

The number of trade arrows a city produces from worked city squares. 

Source City

Home city of the caravan. 

Destination City

The city to which the caravan is delivered. 

Distance

The number of squares separating the source and the destination cities. 
Imagine Civ2-map turned by 45 degrees. Then you see that map is a simple grid of squares. 

Take the "rectangle" defined by the position of the unit and the position of the city (all sides of rectangle are built by squares connected by lines, not by edges). 

Distance = (length of longer side of rectangle) + 0.5 * (length of shorter side of rectangle) 

Foreign Delivery

X1 The Source City and the Destination City are both part of the same civilization. 
X2 The civilization of the Source City differs from the civilization of the Destination City. 

Multipliers

Multiply the results of the Basic Formula by all the multipliers listed below rounding the final result up, if necessary

Commodity Demand Multiplier

X1 any commodity not demanded 
X2 Hides, Wool, Beads, Salt, Copper, or Dye 
X2½ Cloth, Coal, Wine, Silver 
X3 Silk, Spice, Gems, Gold 
X3½ Oil 
X4 Uranium

Roadway Multiplier

X1 source and destination cities are not connected or are connected but not by the most direct route 
X1½ connected by road 
X2 connected by rail 

Halving Factor

X1 source civilization has discovered Navigation or Invention or the game turn exceeds 200 
X2 none of these conditions met 

Railroad Multiplier

X1 if Railroad has not been discovered 
X2/3 if Railroad has been discovered 

Flight Multiplier

X1 if Flight has not been discovered 
X2/3 if Flight has been discovered 

Superhighway Multiplier

X1 neither city has Superhighways 
X1½ one city has Superhighways 
X2 both cities have Superhighways 

Freight Multiplier

X1 if the trade unit was not Freight 
X1½ if the trade unit was Freight 

Continental Multiplier

X1 source and destination cities are on the same continent 
X2 source and destination cities are on different continents 

Airport Multiplier

X1 neither city has an Airport 
X1 one city has an Airport 
X1½ cities are on the same continent and both have Airports 
X2 cities are on the different continents and both have Airports 

Credits Robert Lancaster upon who's ground breaking research this paper is based. Winkler who's ancient scrolls made Lancaster's formula common knowledge. Quantum Satis for his reseach and the pathways image. All the contributors on the Apolyton Strategy Forum, especially; Caesar the Great, DaveV, samson, Gastrifitis, arii, Scouse Gits, SlowThinker, La Fayette. Their discussions and discoveries have embodied and broadened the understanding of trade in civ2.