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Introduction

This Enhanced District Services mod is a mod for Cities Skylines that allows more granular control of services and supply chains. Previous other mods including the Enhanced Hearse AI, Service Vehicle Managers, and District Service Limit have enabled users to restrict local services to their home district, to prevent these services from servicing far away districts. This Enhanced District Services mod extends this functionality in the following ways:

• Allow users to allow services to serve multiple districts, including specific Campus, Park, and Industrial districts, including or excluding their home district.
• (Industries only) Allow users to restrict shipments between specific buildings as identified by their building ids.
• (Industries only) Allow users to restrict shipments to outside connections.
• (Industries only) Allow users to control the amount of traffic from outside connections.
• (Industries only) Allow users to reserve a percentage of goods to serve the user-specified districts or buildings. Excess goods are sold to buildings in other districts or outside connections.

Buildings supported by this mod

• Police Stations & Prisons
• Fire Stations
• Medical Centers and Hospitals
• Cemeteries and Crematoriums
• Landfills and Incinerators
• Elementary and Secondary Schools
• Road maintenance depot
• Disaster Response Unit (Natural Disasters)
• Pumping Service (Natural Disasters)
• Large and Small Shelter (Natural Disasters)
• Helicopter Depots (Natural Disasters)
• Post Offices (Industries)
• Extracting and Processing Buildings (Industries)
• Special Factories and Warehouses (Industries)

Incompatible Mods

Basically any other mod that tries to limit services to a district, or tries to improve matching of services to demand.

• Enhanced Hearse AI
• Service Vehicle Managers
• District Service Limit
• More Effective Transfer Manager

Data Serialization

The mod adds some data to the savegame, including local area restrictions, outside connection restrictions, the supply reserve, district restrictions, and supply chain links.

How to use the mod?

• Draw your districts with the base game's Paint District tool.
• Press Ctrl-D to toggle the policy tool on/off. The policies remain in effect when the policy tool is off.
• Click on a service building to configure service (and possibly supply chain) policies:

1. BuildingId: The unique id of the building. You can also enter a valid building id to select that building's policies.
2. All Local Areas: If selected, all local areas are serviceable and Supply Chain Out and District restrictions are ignored.
3. All Outside Connections: (Industries only) If selected, then shipments to outside connections are allowed.
4. Supply Reserve: (Industries only) Default 100. Specifies the percentage of goods reserved to serve specified supply chain out and districts restrictions. Excess goods is sold to other districts or outside connections.
5. Supply Chain In: (Industries only) If specified, then incoming shipments are restricted to this comma-delimited list of building ids. Otherwise, this building is free to receive shipments from any source.
6. Supply Chain Out: (Industries only) If specified, then outgoing shipments are restricted to this comma-delimited list of building ids. If All Local Areas is selected, this policy is ignored. If not specified, then District restrictions are applied instead.
7. Districts served: The districts selected in this dropdown menu will be serviced by this building, provided that All Local Areas and Supply Chain Out is not specified.

Supply Chain Example

In this example, I have a greenhouse (id = 17995) that has a Supply Chain Out restriction to a barn (id = 13651). This greenhouse will only ship grain to that barn.

That barn (id = 13651) in turn receives shipments only from 3 greenhouses (including id = 17995) and only ships that grain to the 6 flour mills whose ids are listed as a comma-delimited list in the Supply Chain Out field.

Here is a warehouse that serves as a distribution node in this supply chain. Shipments of food are accepted only from the 6 flour mills, but is able to serve regular RCI buildings in 5 districts.

One way shipment from Warehouse A to Warehouse B

We would like to ship goods from Warehouse A to Warehouse B, and prevent Warehouse B from shipping goods back to Warehouse A. This is a typical situation where we want Warehouse A to act as an intermediate region-wide distribution node, and Warehouse B to act as a local node. Without this mod, the game would sometimes try and ship goods from Warehouse B back to Warehouse A.

To setup this one way shipment, simply restrict Warehouse A's supply chain in field to upstream warehouses or processing buildings, and then add Warehouse B's building id to Warehouse A's supply chain out field.

Prepositioning raw materials for special factories

We can situate warehouses near special factories, to preposition materials nearby the factory to ensure the special factory will never run out of materials. I recommend simply setting a district restriction on the warehouses to serve nearby factories, but there is also an option to restrict the warehouses to serve a particular factory.

For special factories that combine multiple materials, we can set an option to restrict input for a subset of the required materials.

For example, we have restricted input to nearby warehouses for this sneaker factory for materials = Paper, Petroleum, Plastics.

But we allow crops (grain) to come in from this silo, which has been configured to serve all buildings within this district.

TODOs

• The GUI is functional but could be a bit more eye-catching.
• I also have not found a satisfactory way of inputting supply chain restrictions, other than via a comma-delimited list of building ids.