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banjo_kazooie:obj_data
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Object Data
Banjo-Kazooie uses a voxel based system for handling objects and object collisions. This page outline the data structures used for this system. each voxels correspond to a 1000.0 x 1000.0 x 1000.0 in game unit volume of each map.
Static Variables
| Address | Type | Name | Description |
|---|---|---|---|
| 0x80381FA0 | voxel_struct* | voxelArray.addr | pointer to 3D object voxel array |
| 0x80381FA8 | int32_t | voxelArray.min.x | minimum x voxel value |
| 0x80381FAC | int32_t | voxelArray.min.y | minimum y voxel value |
| 0x80381FB0 | int32_t | voxelArray.min.z | minimum y voxel value |
| 0x80381FB4 | int32_t | voxelArray.max.x | maximum x voxel value |
| 0x80381FB8 | int32_t | voxelArray.max.y | maximum y voxel value |
| 0x80381FBC | int32_t | voxelArray.max.z | maximum z voxel value |
| 0x80381FC0 | int32_t | voxelArray.size.y | number of voxels per y index |
| 0x80381FC4 | int32_t | voxelArray.size.z | number of voxels per z index |
| 0x80381FC8 | int32_t | voxelArray.size | number of voxels in entire array |
| 0x80381FD0 | int32_t | voxelArray.width.x | number of possible x values |
| 0x80381FD4 | int32_t | voxelArray.width.y | number of possible y values |
| 0x80381FD0 | int32_t | voxelArray.width.z | number of possible z values |
Voxel Struct
Size: 0x0C
| Address Offset | BitMask | Type | Description |
|---|---|---|---|
| 0x00 | [F1000000] | s 5bit | x voxel value |
| [07C00000] | s 5bit | y voxel value | |
| [003E0000] | s 5bit | z voxel value | |
| [0001F800] | u 6bit | voxel List1 count | |
| [000007E0] | u 6bit | voxel Item Count | |
| [0000001F] | |||
| 0x04 | voxList1* | ||
| 0x08 | voxItemList* | pointer to list of collidable objects in voxel | |
Voxel Item List Struct
There are 2 different structs that can be contained in this list dependent on the type of object. How each field is used for each type will be color coded using red for type 1, and green for type 2.
Type 1 corresponds to objects that exist in the objectArray. These objects tend to have more complex behavior and are often 3D.
Type 2 are simple objects such as notes, eggs, extra lives, etc.
Size: 0x0C
| Address Offset | BitMask | Type | Description |
|---|---|---|---|
| 0x00 | objType1Struct* | object type 1 struct pointer | |
| objectType2 id | |||
| 0x04 | |||
| 0x08 | &[FF FF FF FE] | ||
| &[00 00 00 01] | 0 = Type 2 | ||
| 1 = Type 1 | |||
banjo_kazooie/obj_data.txt · Last modified: 2020/01/19 23:42 by mittenz