OBD:IDXA AKEV 1

ONI BINARY DATA HPge << Other file types >> IGHH IDXA : Index Array switch to XML:IDXA page Overview @ Oni Stuff

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AKEV 1          AKEV 2          AKOT 1          AKOT 2          M3GM 1          M3GM 2          ONOA

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Offset	Type	Raw Hex	Value	Description
0x00	res_id	01 53 02 00	595	00595-.IDXA
0x04	lev_id	01 00 00 00	3	level 3
0x08	char[20]	AD DE	dead	unused
0x1C	int32	91 01 00 00	401	array size
First element (black outline)
0x00	int32	15 50 00 00	20501	AGQG element ID (used for: AKEV 2 needs it)

IDXA usage

• Two kinds of IDXA are used in AKEV: they define quads affected by env_show.
• Two kinds of IDXA used in AKOT define the quads and BNVs intersected by a leaf.
• Two kinds of IDXA are used in M3GM: triangle strips and face normal groups.
• ONOA uses several similar IDXA, one to store the quad IDs of every object.

High bit

The high bit is only used for triangle strips in M3GM.

It is set for the first vertex index of every triangle strip.

AKEV indices

Both IDXA have the same number of entries, equal to the number of togglable quads.

The first IDXA lists the quad IDs (index into AGQG, AGQC, AGQR and AGDB arrays).

The second IDXA assigns a gunk ID to every quad (one or more quads per gunk).

AKOT indices

The first IDXA lists the IDs of the quads intersected by octtree leaves, one leaf after another.

The leaf specifies how many quad IDs Oni should read from the IDXA and where it should start.

Same thing for the intersected BNVs: the leaf specifies the size and position of the BNV list.

ONI BINARY DATA
HPge << Other file types >> IGHH
IDXA : Index Array
Generic file