Defence module

A Defence module is a station Module that hosts Turrets and shield generators. Stations with defence modules can fight back; stations without them are exposed to attack. Defence stations are typically composed mostly of these.

Inheritance: component → destructible → module → defencemodule. The datatype declares no own properties — it’s a class label rather than a property bag. All meaningful state (turrets, shields) comes through the contained weapon components.

Properties

Defence module declares no properties of its own in scriptproperties.xml:1097. Use:

Inherited from module: .numdocks.{docksize}, .haswalkableroom
Inherited from destructible: .hull, .hullpercentage
Component search for installed turrets: find_object_component class="class.turret" against the defence module

Common patterns

”Filter defence modules when building”

<do_if value="$macro.isclass.defencemodule">
    <!-- defence module -->
</do_if>

Pattern from vanilla finalisestations.xml:949. Vanilla uses this in the station finalisation pipeline to count defence components.

”Find all defence modules on a station"

<do_for_each name="$mod" in="$Station.modules">
    <do_if value="$mod.isclass.defencemodule">
        <!-- one defence module -->
    </do_if>
</do_for_each>

"Find all turrets attached to a defence module”

<find_object_component
    name="$Turrets"
    multiple="true"
    object="$DefenceModule"
    class="class.turret"/>

Common gotchas

⚠ Defence module declares NO datatype properties. It’s a class label. All combat state is on the contained turrets / shield generators.
⚠ .canbeattackable lives on the parent station. Don’t expect a defence-module-level “is this active” flag.
⚠ Multiple defence modules stack additively. Vanilla finalisestations.xml:949 counts each as contributing to overall defence rating.
⚠ Defence modules + a Defence station are separate concepts. A defence station is mostly composed of defence modules. Production stations can have one or two defence modules too — they’re not exclusive to defence stations.

Module — parent abstraction.
Defence station — station subtype mostly made of these.
Weapon / Turret — what defence modules host.
Shield generator — sibling combat component, also installed on defence modules.