0A284D0B

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0A284D0B
Short name: WGRA
Long name: Wall graph

Contents

Format

Header

As specified in WDB.

DWORD
Block ID
Value = 0A284D0B
DWORD
Block version
Known values: 2 and 3
7BITSTR
Block name
Value = "cWallGraph"

Data Section

DWORD
Unknown (always 0?)
DWORD
Unknown (always 0?)
DWORD
Minimum level on the lot
There are two possible values for this field:
0 if the ground level is the lowest level on the lot (default)
-1 if an underground level exists
This field matches the Minimum Level field in WRLD
DWORD
Lot width
DWORD
Lot height
DWORD
Numeric Value of Story/floor grid level (UI)
DWORD
Unknown
DWORD
Unknown


List of Wall Vertices
DWORD
Count A:
repeat A times
DWORD
Vertex ID
Used in List of Walls below
FLOAT
X coordinate
FLOAT
Y coordinate
DWORD
Level (0 is ground level, 1 is next floor up, etc., -1 is below ground, such as pool)


DWORD
Count B
repeat B times
DWORD
Unknown (generally incremental, but not always)
Used in List of Walls below


List of Walls

Defines a wall between two vertices.

DWORD
Count C:
repeat C times
DWORD
Wall ID
Corresponds to Wall ID in WLL
DWORD
Vertex ID of first vertex within Wall Vertex List above
DWORD
Unknown
Value from array B above
DWORD
Vertex ID of second vertex within Wall Vertex List
DWORD
Unknown
Value from array B above

Note:

1) The Wall Graph defines most vertical structures, such as walls, fences, attic walls, swimming pool walls, and foundation walls (including invisible walls). Each wall may require other associated structures. For example, fences usually have associated fence posts (FPL), attics have associated roofs (ROOF), swimming pools have associated swimming pool surfaces (POOL).

2) Each wall in WLL may be reflected in multiple WGRA instances. Therefore, WGRA instances may reflect properties of each wall, for example: light blocking, load bearing, ...

3) The B array may contain a list of Room IDs. The C array lists wall segments and has two values from the B array; each wall segment is either completely enclosed in a room or separates two rooms from each other. Unsure how to test this hypothesis.

4) Block version 2 means that the height and width are twice the size of the lot (number of lot tiles * 2). Block version 3 means that the height and width are the number of vertices on the lot (number of lot tiles + 1).

This article is imported from the old MTS2 wiki. It's original page, with comments, can be found at http://old_wiki.modthesims2.com/0A284D0B

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