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rneum -> RE: Marine Traffic (11/13/2021 5:35:06 PM)
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I can't seem to post numbers > 99....
I'd seen the randomized traffic scripts of occasional merchants, but due to the effort required scenarios seldom include the clutter and complexity encountered in the world. I decided an approach to generate sea lanes and then randomly populate them was necessary. This was not too hard and I expect to make the github repo public after some refactoring, testing, and review to cite sources.
The transport and exchange of world commerce is a complicated process with a wide variety of variation and scope, but a number of resources are available publicly to guide the scenario developer. The World-Seaborne-Trade_-UNCTAD-2018 and WorldPortTraffic-Data-for-IAPH are some guides to help identify major ports and the distribution of the freight across ports and traffic types in a sea lane.
I sourced ports from the National Geospatial-Intelligence Agency World Port Index (WPI) due to properties such as Facilities_RoRo, Facilities_Container, Facilities_OilTerminal, Facilities_LNGTerminal, Cranes_Fixed, and Cranes_Container and added both harbor and shore locations for ship and facility placement.(approximately [guess I can't post the number] entries)
{ name='Alexandria', country='United States', Facilities_RoRo='Unk', Facilities_Container='Unk', Facilities_OilTerminal='Unk', Facilities_LNGTerminal='Unk', Cranes_Fixed='No', Cranes_Container='Unk', harbor={ latitude=38.71 , longitude=-76.43}, shore={ latitude=38.72, longitude=-76.52}}
I pulled ships from a public DB that gave type, flag, and size and then went and assigned the closest DBID to the entry. A lua table was created composed of [number > 99 ] commercial ships in ... classes:
| Class | ____ | Class |
|-----------|-----------|--|
|Anchor handling supply tug||General cargo vessel|
|Auxiliary ship||Heavy Lift Vessel|
|Barge||Liquefied gas carrier|
|Bulk carrier||Offshore Installation/Maintenance/Repair|
|Cable ship||Oil Products Tanker|
|Cargo and passenger||Oil tanker|
|Cargo ship||Ore carrier|
|Container ship||Passenger ship|
|Cruise Liner||Platform|
|Drilling unit||Platform supply vessel||Pusher/Tug|
|Factory ship||RoRo ship|
|Ferry||Supply vessel|
|Fishing vessel||Trawler|
{type ='Ship', class = 'Supply vessel', dbid = [sorry number > 99] , flag = 'Canada', unitname = 'ANNE RISLEY' }
The primary function is GenerateSealanesAndTracks(sealanegen, allports, CONST_SEALANE_SIDE, {
{source ='Izmir', destination = 'Marseille'},
{source ='Marseille', destination = 'Trieste'},
{source ='Odesa', destination = 'Marseille'},
{source ='Istanbul', destination = 'Odesa'},
{source ='Istanbul', destination = 'Batumi'},
{source ='Haifa', destination = 'Marseille'}
})
[image]local://upfiles/82745/8148AD4E1BD943BC87E7D264F94E25F4.jpg[/image]
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