|0x00||res_id||01 49 02 00||585||00585-.AGQG|
|0x04||lev_id||01 00 00 06||3||level 3|
|0x1C||int32||15 A8 00 00||35349||array size|
|First element (black outline)|
|0x00||int32||00 00 00 00||0||PNTA element for 1st vertex|
|0x04||int32||01 00 00 00||1||PNTA element for 2nd vertex|
|0x08||int32||02 00 00 00||2||PNTA element for 3rd vertex|
|0x0C||int32||03 00 00 00||3||PNTA element for 4th vertex|
|0x10||int32||F5 0F 00 00||4085||TXCA element for 1st vertex|
|0x14||int32||F3 0F 00 00||4083||TXCA element for 2nd vertex|
|0x18||int32||F4 0F 00 00||4084||TXCA element for 3rd vertex|
|0x1C||int32||F6 0F 00 00||4086||TXCA element for 4th vertex|
|0x20||color||00 00 00 00||0, 0, 0, 0||byte-swapped ARGB color for 1st vertex|
|0x24||color||00 00 00 00||0, 0, 0, 0||byte-swapped ARGB color for 2nd vertex|
|0x28||color||02 07 09 00||2, 7, 9, 0||byte-swapped ARGB color for 3rd vertex|
|0x2C||color||06 15 1E 00||6, 21, 30, 0||byte-swapped ARGB color for 4th vertex|
|0x30||bitset32||00 00 08 02||0, 0, 8, 2|| flags; used values:
|0x34||int32||FF FF FF FF||-1||object ID and type to which this quad belongs (see ONOA for details); -1 if it does not belong to an object|
- Many quads are in fact triangles: the last two vertices have the same PNTA and TXCA entries, and the ARGB color is (255, 205, 205, 205) (80% gray, 100% opaque). There is also a flag specifying that.
- Ghost, Stairs up, Stairs down
- These flags are used for BNV adjacencies, see AKAA. Stairs up/down are used instead of Ghost when the quad is placed at the bottom/top of the stairs. These quads are not visibile. The script variable env_show_ghostgqs is intended to control the visibility of such quads but it requires "debug" level files.
- There are a couple of ghost quads that aren't referenced from AKAA. It's likely that those quads are useless.
- Door frame
- This appears to be another type of "ghost" quad (its visibility is controlled by the same env_show_ghostgqs variable). Sometimes it is used together with the Ghost flag but not always. Only the door frames that also have the Ghost flag are used as adjacencies so it's unclear if the rest of the door frames serve any purpose. In fact it appears that this flag has no effect other than making the quad invisible.
- This is applied to the invisible ramp quad that covers the stairs. In general this flag is also applied to the visible stairs geometry but there are some exceptions (errors? see level 19 stairs).
- No occlusion
- This flag tells the octtree raycaster to ignore the quad when doing ray/quad intersections. This is tipically used for small quads that are unlikely to affect the overall environment visibility.
- Projection plane flags
- These 2 flags can be 00, 01, 10 and 11. That means the values 0,1,2 and 3 which have the following meanings:
- 0 - No projection plane specified. One can be computed if needed. Never used in files, may slow down the game if used.
- 1 - Project quad on XY plane.
- 2 - Project quad on XZ plane.
- 3 - Project quad on YZ plane.
- The projection plane is used to determine if a point is in a quad (this point is usually the result of an intersection between a ray and the quad plane).
- Grid ignore
- Appears to be unused. Its likely purpose is to mark quads that don't count as obstacles in the pathfinding grid.
- Appears to be unused. Its likely purpose is to create danger areas in the pathfinding grids. Usually there's a trigger volume nearby that hurts/kills the character. This quads are always invisible.
- Invisible quads have a couple of different uses:
- block player access to some parts of the environment
- stairs ramp
- collision geometry (used by some "complex" furniture)
- danger quads (see above)
- some other apparently useless quads
- Set for all quads that belong to a furniture object. It doesn't appear to be used. It is also redundant since all the furniture quads have an object id.
- No decal
- Prevents the creation of decals on the quad. Set for door quads because the decals would disappear when the door opens. That's why shooting a door doesn't leave a mark.
- Runtime flags
At runtime the following flag values are also used:
- 0x00 00 04 00 - set at runtime for quads hidden with *env_show*, never used in files
- 0x20 00 00 00 - set at runtime for Jell'Oed quads, never used in files
|ONI BINARY DATA|
|AGQC << Other file types >> AGQR|
|AGQG : Gunk Quad General Array|