Sockets and shapes

Placement size, sockets, solid collision, and interaction triggers are separate settings.

Choose what to override

Property	Omitted / null	Empty array
Models	Keep donor visuals	Remove visuals
Sockets	Keep donor sockets	Remove sockets
BuildingCost	Keep donor cost	Free to build
PhysicsShapes	Keep donor solid geometry	No solid colliders
InteractionShapes	Keep donor triggers	No overrides
An interaction's Boxes	Supply an array	Remove that target's colliders

Set a footprint

Add using UnityEngine; and using Ships.Interface.Model.Parts;. Put these properties in the tutorial controller's PartDefinition:

Size = new Vector3(0.5f, 0.5f, 0.5f),
Sockets = new[]
{
    new SocketDefinition
    {
        Id = 0,
        Type = CableType.Signal,
        Position = new Vector3(0, 0.07f, -0.375f),
        Rotation = Vector3.zero
    }
},
PhysicsShapes = new[]
{
    new BoxShape { Center = new Vector3(0, 0.025f, 0), Size = new Vector3(0.5f, 0.05f, 0.5f) }
},
InteractionShapes = new[]
{
    new InteractionShapeDefinition
    {
        Boxes = new[]
        {
            new BoxShape { Center = new Vector3(0, 0.25f, 0), Size = new Vector3(0.52f, 0.52f, 0.52f) }
        }
    }
}

Size sets the placement footprint. The example adds a thin solid base, a larger use trigger, and signal socket 0.

Coordinates and restrictions

Use part-local positions and Euler angles in degrees. Dimensions must be positive. Explicit boxes and replacement sockets do not scale with the mesh or footprint.

Preserve socket IDs/types expected by donor logic. Interaction shapes modify existing actions: omitted Target selects the sole interaction; otherwise name a unique interaction GameObject. Static physics overrides cannot replace dynamic donor colliders.

Place a fresh instance to test snapping, cable connections, collision, and use prompts. Existing placements are not moved by geometry updates.

See shape types for the complete limits.