Object Data [Hack64 Wiki]

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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.

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===== Static Variables =====
^ Address ^ Type ^ Name ^Description ^
| 0x80381FA0 | [[banjo_kazooie:obj_data#voxel_struct|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 | 

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===== 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 |


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===== 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 <color #ed1c24>red for type 1</color>, and <color #22b14c>green for type 2</color>.

<color #ed1c24>Type 1 corresponds to objects that exist in the objectArray. These objects tend to have more complex behavior and are often 3D.</color>

<color #22b14c>Type 2 are simple objects such as notes, eggs, extra lives, etc.</color>
 
Size: 0x0C
^ Address Offset ^ BitMask ^ Type ^Description ^
| 0x00 | <color #ed1c24> [[banjo_kazooie:structs#object_type_1_struct|objType1Struct*]] </color> || <color #ed1c24> object type 1 struct pointer </color> |
| ::: | <color #22b14c> </color> | <color #22b14c> </color> | <color #22b14c> objectType2 id </color> |
| 0x04 | | | |
| 0x08 | &[FF FF FF FE] |  |  |
| :::  | &[00 00 00 01] |  | <color #22b14c> 0 = Type 2</color> |
| :::  | ::: |  | <color #ed1c24> 1 = Type 1</color> |

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