LAND.md

layout	falloutnvrec
title	fopdoc

LAND

Landscape

Format

Count	Subrecord	Name	Type	Info
DATA	Unknown	uint8[]
VNML	Vertex Normals	struct
VHGT	Vertex Height Map	struct
VCLR	Vertex Colors	struct
-*		Layer Subrecord Collection	collection	See below for details.
VTEX	Textures	formid[]	An array of LTEX record FormIDs, or null.

VNML / VCLR

Each VNML / VCLR structure contains 1089 repeats of the following structure. The 1089 repeats are divided into 33 rows, and subdivided into 33 columns, forming a 33x33 grid.

Name	Type	Info
X	uint8
Y	uint8
Z	uint8

VHGT

Count	Name	Type	Info
Offset	float32
-*	Row	struct	There are 33 row structs. Each row struct contains 33 uint8 fields, representing 33 columns.
Unused	byte[3]

Layer Subrecord Collection

Each layer can be a base layer or an alpha layer, which have different structures.

Base Layer

Count	Subrecord	Name	Type	Info
BTXT	Base Layer Header	struct

BTXT / ATXT

Name	Type	Info
Texture	formid	FormID of a LTEX record, or null.
Quadrant	uint8	Enum - see below for values.
Unused	byte
Layer	int16

Quadrant Enum Values

Value	Meaning
0	Bottom Left
1	Bottom Right
2	Top Left
3	Top Right

Alpha Layer

Count	Subrecord	Name	Type	Info
ATXT	Alpha Layer Header	struct
VTXT	Alpha Layer Cell Data	struct

VTXT

The VTXT subrecord consists of an array of objects with the following structure.

Name	Type	Info
Position	uint16
Unused	byte[2]
Opacity	float32