BNV Node Array

File ID	$00	12
Level ID	$04	4
Unused	$08	1020
BNV nodes	$1C	4

*BNV node		$20	$1C	4	116
AKBP index	$00	4	BSP tree for this BNV
AKVA index	$04	4	index of this BNV
AKBA index	$08	4	"side" range start
AKBA index	$0C	4	"side" range end
AKVA index	$10	4	first child BNV
AKVA index	$14	4	next sibling BNV
Unknown	$18	4	always -1
X-tiles	$1C	4	size of pathfinding grid
Y-tiles	$20	4	size of pathfinding grid
RAW offset	$24	11	offset of grid data
RAW size	$28	4	size of grid data
Tile size	$2C	9	usually 4 world units
AABB X-	$30	9	BNV AABB
AABB Y-	$34	9	BNV AABB
AABB Z-	$38	9	BNV AABB
AABB X+	$3C	9	BNV AABB
AABB Y+	$40	9	BNV AABB
AABB Z+	$44	9	BNV AABB
Unknown	$48	2	always -2
Unknown	$4A	2	always -2
AKVA index	$4C	4	index of this BNV again
Unknown	$50	4	always 0
Unknown	$54	4	always 0
Unknown	$58	4	always 0 (was a RAW offset once?)
Bitset	$5C	4	1: "sloped"; 4: unknown, always set; 16: unknown, "no raw data"
Plane X	$60	9	floor and ceiling normal
Plane Y	$64	9	floor and ceiling normal
Plane Z	$68	9	floor and ceiling normal
Plane D	$6C	9	distance of floor to origin
Plane D	$70	9	distance of ceiling to origin