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banjo_kazooie:model_data [2024/02/27 04:22] BanjoFreak64 [Effects Setup] |
banjo_kazooie:model_data [2024/03/01 16:45] ThatCowGuy Adding Collision Segment as documented in Decomp and tested |
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| A vertex will be drawn at position (20, 98, -25). UV mapping will begin at -20 coordinates in the U axis and 20 coordinates in the V axis. This vertex will feature a color of #929292 with full opacity alpha of 0xFF or 255. | A vertex will be drawn at position (20, 98, -25). UV mapping will begin at -20 coordinates in the U axis and 20 coordinates in the V axis. This vertex will feature a color of #929292 with full opacity alpha of 0xFF or 255. | ||
| + | |||
| + | ---- | ||
| + | ===== Collision Setup ===== | ||
| + | The Collision Setup begins with a Header of Size 0x18: | ||
| + | ^ Offset within CollSetup ^ Value/Syntax ^ Description ^ | ||
| + | | 0x00000000 | [''<color #A946F2>xx xx</color> <color #00a2e8>yy yy</color> <color #f50569>zz zz</color>''] | s16[3] Minimum GeoCube Index | | ||
| + | | 0x00000006 | [''<color #A946F2>xx xx</color> <color #00a2e8>yy yy</color> <color #f50569>zz zz</color>''] | s16[3] Maximum GeoCube Index | | ||
| + | | 0x0000000C | [''<color #d1b219>vv vv</color>''] | u16 Y Stride - GeoCubes per X-Row | | ||
| + | | 0x0000000E | [''<color #ff5703>ww ww</color>''] | u16 Z Stride - GeoCubes per XY-Layer | | ||
| + | | 0x00000010 | [''<color #00a2e8>cc cc</color>''] | u16 Total amount of GeoCubes | | ||
| + | | 0x00000012 | [''<color #22b14c>ss ss</color>''] | u16 GeoCube Scale | | ||
| + | | 0x00000014 | [''<color #ed1c24>tt tt</color>''] | u16 Total amount of Collision Tris | | ||
| + | | 0x00000016 | [''00 00''] | Padding | | ||
| + | |||
| + | The entire map is split up into 3D GeoCubes that all share the same scale ''0x<color #22b14c>SSSS</color>^3''. They are set up in a 3D matrix, such that the GeoCube (0,0,0) is stretching from the coordinates (0,0,0) to (0x<color #22b14c>SSSS</color>, 0x<color #22b14c>SSSS</color>, 0x<color #22b14c>SSSS</color>). In Memory, the GeoCubes are stored as a 1D array, where the Y and Z strides are used for the pointer arithmetic of referencing the correct cube: | ||
| + | |||
| + | <code> | ||
| + | cube_arr[cube_x][cube_y][cube_z] | ||
| + | == cube_arr[cube_x + (cube_y * stride_y) + (cube_z * stride_z)] | ||
| + | == cube_arr[cube_ID] | ||
| + | </code> | ||
| + | Following the Header, we have a list of 0x<color #00a2e8>CCCC</color> GeoCube instances of Size 0x08, looking like this: | ||
| + | |||
| + | ^ Value/Syntax ^ Description ^ | ||
| + | | [''<color #A946F2>aa aa</color>''] | u16 Starting Tri ID | | ||
| + | | [''<color #b5e61d>cc cc</color>''] | u16 Tri Count | | ||
| + | |||
| + | These are referring to a Subset ''[start : (start + count))'' of Collision Tris from the then following Collision Tri list. This list contains 0x<color #ed1c24>TTTT</color> Collision Triangles, of Size 0x0C, which are structured like this in BK: | ||
| + | |||
| + | ^ Value/Syntax ^ Description ^ | ||
| + | | [''<color #A946F2>aa aa</color>''] | u16 Vertex ID 1 | | ||
| + | | [''<color #00a2e8>bb bb</color>''] | u16 Vertex ID 2 | | ||
| + | | [''<color #f50569>cc cc</color>''] | u16 Vertex ID 3 | | ||
| + | | [''<color #808080>uu uu</color>''] | <color #808080>unknown</color> | | ||
| + | | [''<color #b5e61d>ii ii ii ii</color>''] | u32 Sound + Collision Flags | | ||
| + | |||
| + | Where every Triangle is defined by the 3 indices as 1-2-3, which is important to determine its front facing direction. | ||
| ---- | ---- | ||
banjo_kazooie/model_data.txt · Last modified: 2024/05/02 22:33 by BanjoFreak64