Quick Drop items

Quick Drop objects are the rails, ledges, ramps and props a player places in the world. Each is an item: an item asset names a runtime prefab, the prefab names its mesh and physics, and the item master collection lists the item so the game offers it. The structure below is read from the stock item own_bkrails_generic_flatrailroundlong_00001 and from community packs whose added objects are clones of it, which the game loads and offers. Observed

Parts of one item

Part	Asset	Confidence
Item	DelMarBaseItemAsset, for example items/bkrails/own_bkskate3_<name>_00001, with Key, Name, HashedAssetKey, DisplayName, BuildKitPrefabName and BuildKitBundleName	Observed
Prefab	EcsRuntimePrefabAsset	Observed
Render mesh	RigidMeshAsset and its MeshSet, for example under world/buildkit/quickdrop/rails/, with MeshMaterials	Observed
Collision	Eight EcsPhysicsAsset slots, each naming a PhysicsResource and carrying VolumeMoments	Observed
Thumbnails	thumbnail/tool, a TextureAsset (authored at 512, cropped to 256), and thumbnail/cdn, a DingoCdnTexture	Observed
Registration	An entry in items/itemmastercollection	Observed

The mesh of the stock rail item is placed in its four flatrailroundlong ECS bundles and in cas_main_sharedbundle. An added item can keep its donor’s BuildKitBundleName, so the donor’s ECS bundle serves it, while its Key, Name, HashedAssetKey, DisplayName and BuildKitPrefabName are its own. Observed

The items live in the items and buildkititems superbundles; a pack whose meshes use materials of their own also replaces the globals shader database and streamable-texture-set lookup, as levels do with shader state. Observed

A replaced stock Quick Drop mesh keeps its item: a pack that only swaps the MeshSets of existing objects (a broomstick, a spider-web rail, medium stairs, a crypt pad) needs no new item assets. Observed

The game loads a Quick Drop MeshSet whose vertex buffer is 65,400 bytes, not a multiple of 16, although every stock MeshSet pads its vertex buffer to 16 bytes. See MeshSets. Observed

ReSkate names and groups added objects from a reskate-objects.json (schema 1). Sourced · ReSkate

Which item fields does the game check when it registers an added object?

The clones change the fields listed above and keep the rest of the donor’s; which of them must be unique, and whether the eight physics slots are all required, is not established. Unknown