FFollowItem

One followed instance: 12 bytes.

Declaration

struct FFollowItem

Header: #include "Native/GroundFollow.h"
Module: PublicDependencyModuleNames.Add("OrreryTerrainCore"); in your module’s Build.cs.
Stability: Stable: changes within a major version only add.

The sort key is Packed >> 2 (the edit tile), so a tile's items are one run.

Hidden items have no instance id: Id then indexes the shell's table of the hidden transforms.

Name	Type	Default	Meaning
`Delta_m`	`float`	`0.f`	—
`Id`	`uint32_t`	`0`	The instance id while visible; the hidden-table slot while hidden.
`Packed`	`uint32_t`	`0`	Tile Y (15 bits), tile X (15 bits), flags (2 bits: kHidden, kSlopeExempt).
`kHidden`	`uint32_t`	`1u`	—
`kSlopeExempt`	`uint32_t`	`2u`	It stood on ground steeper than the type's limit when it registered: the slope never hides it.