Clustered Mesh
Clustered Mesh resources were used for world collision (WORLDCOL) prior to the introduction of the Polygon Soup List resource type.
Structures
CgsPhysics::CollisionMeshData
32-bit
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x4 | Volume* | mpCollisionVolume | ||
| 0x4 | 0xC | Padding | |||
| 0x10 | 0x10 | Vector3Plus | mBoundingSphere |
rw::collision::VolRef::Volume
32-bit
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x40 | Matrix44Affine | transform | ||
| 0x40 | 0x4 | Volume::VTable* | vTable | When written to file, this actually represents an rw::collision::VolumeType instead rather than a pointer. This is always VOLUMETYPEAGGREGATE, which has a value of 6.
| |
| 0x44 | 0x4 | ClusteredMesh* | This is actually implemented as a 12-byte union accepting multiple types, including three floats representing triangles or boxes. The union type used is defined by the VolumeType in the vTable. The Clustered Mesh resource type however only accepts a ClusteredMesh pointer here (represented by the aggregate volume type), and will cause undefined behaviour if other types are used instead.
| ||
| 0x48 | 0x8 | Union padding | |||
| 0x50 | 0x4 | float32_t | radius | ||
| 0x54 | 0x4 | uint32_t | groupID | ||
| 0x58 | 0x4 | uint32_t | surfaceID | ||
| 0x5C | 0x4 | uint32_t | m_flags | List of flags is unknown |
rw::collision::Aggregate
32-bit
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x20 | AABBox | m_AABB | ||
| 0x20 | 0x4 | Aggregate::VTable* | m_vTable | Garbage data in the file - always replaced on read | |
| 0x24 | 0x4 | uint32_t | m_numTagBits | ||
| 0x28 | 0x4 | uint32_t | m_numVolumes | ||
| 0x2C | 0x4 | uint32_t | pad |
rw::collision::Procedural
32-bit
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x30 | Aggregate | super_Aggregate |
rw::collision::ClusteredMesh
The base pointer resets here - all pointer offsets here are relative to the start of this struct.
32-bit
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x30 | Procedural | super_Procedural | ||
| 0x30 | 0x4 | KDTree* | mKDTree | ||
| 0x34 | 0x4 | uint32_t* | mCluster | Effectively a ClusteredMeshCluster** | |
| 0x38 | 0x8 | ClusterParams | mClusterParams | ||
| 0x40 | 0x4 | uint32_t | mNumClusters | ||
| 0x44 | 0x4 | uint32_t | mMaxClusters | ||
| 0x48 | 0x4 | uint32_t | mNumUnits | ||
| 0x4C | 0x4 | uint32_t | mMaxUnits | ||
| 0x50 | 0x4 | uint32_t | mSizeOfThis | ||
| 0x54 | 0x2 | uint16_t | mDefaultGroupId | ||
| 0x56 | 0x2 | uint16_t | mDefaultSurfaceId | ||
| 0x58 | 0x1 | uint8_t | mDefaultEdgeAngle | ||
| 0x59 | 0x7 | Padding |
rw::collision::AALineClipper::AABBox
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x10 | vpu::Vector3 | m_min | ||
| 0x10 | 0x10 | vpu::Vector3 | m_max |
rw::collision::ClusterParams
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x4 | float32_t | mVertexCompressionGranularity | ||
| 0x4 | 0x2 | uint16_t | mFlags | List of flags is unknown | |
| 0x6 | 0x1 | uint8_t | mGroupIdSize | ||
| 0x7 | 0x1 | uint8_t | mSurfaceIdSize |
rw::collision::KDTree
The base pointer resets here - all pointer offsets here are relative to the start of this struct.
32-bit
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x4 | BranchNode* | m_branchNodes | ||
| 0x4 | 0x4 | uint32_t | m_numBranchNodes | ||
| 0x8 | 0x4 | uint32_t | m_numEntries | ||
| 0xC | 0x4 | Padding | |||
| 0x10 | 0x20 | AABBox | m_bbox |
rw::collision::KDTree::BranchNode
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x4 | uint32_t | m_parent | ||
| 0x4 | 0x4 | uint32_t | m_axis | ||
| 0x8 | 0x10 | NodeRef[2] | m_childRefs | ||
| 0x18 | 0x8 | float32_t[2] | m_extents |
rw::collision::KDTree::NodeRef
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x4 | uint32_t | m_content | ||
| 0x4 | 0x4 | uint32_t | m_index |
rw::collision::ClusteredMeshCluster
| Offset | Length | Type | Name | Description | Comments |
|---|---|---|---|---|---|
| 0x0 | 0x2 | uint16_t | unitCount | ||
| 0x2 | 0x2 | uint16_t | unitDataSize | ||
| 0x4 | 0x2 | uint16_t | unitDataStart | ||
| 0x6 | 0x2 | uint16_t | normalStart | ||
| 0x8 | 0x2 | uint16_t | totalSize | ||
| 0xA | 0x1 | uint8_t | vertexCount | ||
| 0xB | 0x1 | uint8_t | normalCount | ||
| 0xC | 0x1 | uint8_t | compressionMode | ||
| 0xD | 0x3 | uint8_t[3] | padding | ||
| 0x10 | 0x10 | vpu::Vector3[1] | vertexArray | Variable size data | What format? |