/*
=============
Q3_LoadBSPFile
=============
*/
void Q3_LoadBSPFile(struct quakefile_s *qf)
{
dheader_t *header;
// load the file header
//LoadFile(filename, (void **)&header, offset, length);
//
LoadQuakeFile(qf, (void **)&header);
// swap the header
Q3_SwapBlock( (int *)header, sizeof(*header) );
if ( header->ident != BSP_IDENT ) {
Error( "%s is not a 2015 file", qf->filename );
}
if ( header->version != BSP_VERSION ) {
Error( "%s is version %i, not %i", qf->filename, header->version, BSP_VERSION );
}
q3_numShaders = Q3_CopyLump( header, LUMP_SHADERS, (void *) &dshaders, sizeof(dshader_t) );
q3_nummodels = Q3_CopyLump( header, LUMP_MODELS, (void *) &dmodels, sizeof(dmodel_t) );
q3_numplanes = Q3_CopyLump( header, LUMP_PLANES, (void *) &dplanes, sizeof(dplane_t) );
q3_numleafs = Q3_CopyLump( header, LUMP_LEAFS, (void *) &dleafs, sizeof(dleaf_t) );
q3_numnodes = Q3_CopyLump( header, LUMP_NODES, (void *) &dnodes, sizeof(dnode_t) );
q3_numleafsurfaces = Q3_CopyLump( header, LUMP_LEAFSURFACES, (void *) &dleafsurfaces, sizeof(dleafsurfaces[0]) );
q3_numleafbrushes = Q3_CopyLump( header, LUMP_LEAFBRUSHES, (void *) &dleafbrushes, sizeof(dleafbrushes[0]) );
q3_numbrushes = Q3_CopyLump( header, LUMP_BRUSHES, (void *) &dbrushes, sizeof(dbrush_t) );
q3_numbrushsides = Q3_CopyLump( header, LUMP_BRUSHSIDES, (void *) &dbrushsides, sizeof(dbrushside_t) );
q3_numDrawVerts = Q3_CopyLump( header, LUMP_DRAWVERTS, (void *) &drawVerts, sizeof(drawVert_t) );
q3_numDrawSurfaces = Q3_CopyLump( header, LUMP_SURFACES, (void *) &drawSurfaces, sizeof(dsurface_t) );
// q3_numFogs = Q3_CopyLump( header, LUMP_FOGS, (void *) &dfogs, sizeof(dfog_t) );
q3_numDrawIndexes = Q3_CopyLump( header, LUMP_DRAWINDEXES, (void *) &drawIndexes, sizeof(drawIndexes[0]) );
q3_numVisBytes = Q3_CopyLump( header, LUMP_VISIBILITY, (void *) &q3_visBytes, 1 );
q3_numLightBytes = Q3_CopyLump( header, LUMP_LIGHTMAPS, (void *) &q3_lightBytes, 1 );
q3_entdatasize = Q3_CopyLump( header, LUMP_ENTITIES, (void *) &dentdata, 1);
// q3_numGridPoints = Q3_CopyLump( header, LUMP_LIGHTGRID, (void *) &q3_gridData, 8 );
CountTriangles();
FreeMemory( header ); // everything has been copied out
// swap everything
Q3_SwapBSPFile();
Q3_FindVisibleBrushSides();
//Q3_PrintBSPFileSizes();
}
void QuadTreeClass::CreateTreeNode(NodeType* node, float positionX, float positionZ, float width, ID3D10Device* device)
{
int numTriangles, i, count, vertexCount, index, vertexIndex;
float offsetX, offsetZ;
VertexType* vertices;
unsigned long* indices;
bool result;
D3D10_BUFFER_DESC vertexBufferDesc, indexBufferDesc;
D3D10_SUBRESOURCE_DATA vertexData, indexData;
// Store the node position and size.
node->positionX = positionX;
node->positionZ = positionZ;
node->width = width;
// Initialize the triangle count to zero for the node.
node->triangleCount = 0;
// Initialize the vertex and index buffer to null.
node->vertexBuffer = 0;
node->indexBuffer = 0;
// Initialize the vertex array to null.
node->vertexArray = 0;
// Initialize the children nodes of this node to null.
node->nodes[0] = 0;
node->nodes[1] = 0;
node->nodes[2] = 0;
node->nodes[3] = 0;
// Count the number of triangles that are inside this node.
numTriangles = CountTriangles(positionX, positionZ, width);
// Case 1: If there are no triangles in this node then return as it is empty and requires no processing.
if (numTriangles == 0)
{
return;
}
// Case 2: If there are too many triangles in this node then split it into four equal sized smaller tree nodes.
if (numTriangles > MAX_TRIANGLES)
{
for (i = 0; i<4; i++)
{
// Calculate the position offsets for the new child node.
offsetX = (((i % 2) < 1) ? -1.0f : 1.0f) * (width / 4.0f);
offsetZ = (((i % 4) < 2) ? -1.0f : 1.0f) * (width / 4.0f);
// See if there are any triangles in the new node.
count = CountTriangles((positionX + offsetX), (positionZ + offsetZ), (width / 2.0f));
if (count > 0)
{
// If there are triangles inside where this new node would be then create the child node.
node->nodes[i] = new NodeType;
// Extend the tree starting from this new child node now.
CreateTreeNode(node->nodes[i], (positionX + offsetX), (positionZ + offsetZ), (width / 2.0f), device);
}
}
return;
}
// Case 3: If this node is not empty and the triangle count for it is less than the max then
// this node is at the bottom of the tree so create the list of triangles to store in it.
node->triangleCount = numTriangles;
// Calculate the number of vertices.
vertexCount = numTriangles * 3;
// Create the vertex array.
vertices = new VertexType[vertexCount];
// Create the index array.
indices = new unsigned long[vertexCount];
// Create the vertex array.
node->vertexArray = new VectorType[vertexCount];
// Initialize the index for this new vertex and index array.
index = 0;
// Go through all the triangles in the vertex list.
for (i = 0; i<m_triangleCount; i++)
{
// If the triangle is inside this node then add it to the vertex array.
result = IsTriangleContained(i, positionX, positionZ, width);
if (result == true)
{
// Calculate the index into the terrain vertex list.
vertexIndex = i * 3;
// Get the three vertices of this triangle from the vertex list.
vertices[index].position = m_vertexList[vertexIndex].position;
vertices[index].texture = m_vertexList[vertexIndex].texture;
vertices[index].normal = m_vertexList[vertexIndex].normal;
indices[index] = index;
// Also store the vertex position information in the node vertex array.
node->vertexArray[index].x = m_vertexList[vertexIndex].position.x;
node->vertexArray[index].y = m_vertexList[vertexIndex].position.y;
node->vertexArray[index].z = m_vertexList[vertexIndex].position.z;
// Increment the indexes.
index++;
vertexIndex++;
// Do the same for the next point.
vertices[index].position = m_vertexList[vertexIndex].position;
vertices[index].texture = m_vertexList[vertexIndex].texture;
vertices[index].normal = m_vertexList[vertexIndex].normal;
indices[index] = index;
node->vertexArray[index].x = m_vertexList[vertexIndex].position.x;
node->vertexArray[index].y = m_vertexList[vertexIndex].position.y;
node->vertexArray[index].z = m_vertexList[vertexIndex].position.z;
index++;
vertexIndex++;
// Do the same for the next point also.
vertices[index].position = m_vertexList[vertexIndex].position;
vertices[index].texture = m_vertexList[vertexIndex].texture;
vertices[index].normal = m_vertexList[vertexIndex].normal;
indices[index] = index;
node->vertexArray[index].x = m_vertexList[vertexIndex].position.x;
node->vertexArray[index].y = m_vertexList[vertexIndex].position.y;
node->vertexArray[index].z = m_vertexList[vertexIndex].position.z;
index++;
}
}
// Set up the description of the vertex buffer.
vertexBufferDesc.Usage = D3D10_USAGE_DEFAULT;
vertexBufferDesc.ByteWidth = sizeof(VertexType) * vertexCount;
vertexBufferDesc.BindFlags = D3D10_BIND_VERTEX_BUFFER;
vertexBufferDesc.CPUAccessFlags = 0;
vertexBufferDesc.MiscFlags = 0;
//vertexBufferDesc.StructureByteStride = 0;
// Give the subresource structure a pointer to the vertex data.
vertexData.pSysMem = vertices;
vertexData.SysMemPitch = 0;
vertexData.SysMemSlicePitch = 0;
// Now finally create the vertex buffer.
device->CreateBuffer(&vertexBufferDesc, &vertexData, &node->vertexBuffer);
// Set up the description of the index buffer.
indexBufferDesc.Usage = D3D10_USAGE_DEFAULT;
indexBufferDesc.ByteWidth = sizeof(unsigned long) * vertexCount;
indexBufferDesc.BindFlags = D3D10_BIND_INDEX_BUFFER;
indexBufferDesc.CPUAccessFlags = 0;
indexBufferDesc.MiscFlags = 0;
//indexBufferDesc.StructureByteStride = 0;
// Give the subresource structure a pointer to the index data.
indexData.pSysMem = indices;
indexData.SysMemPitch = 0;
indexData.SysMemSlicePitch = 0;
// Create the index buffer.
device->CreateBuffer(&indexBufferDesc, &indexData, &node->indexBuffer);
// Release the vertex and index arrays now that the data is stored in the buffers in the node.
delete[] vertices;
vertices = 0;
delete[] indices;
indices = 0;
return;
}
void QuadTree::CreateTreeNode(QuadTreeNode* node,vec2 pos,int width,int numObjs){
float offsetX,offsetZ;
node->position.x = pos.x;
node->position.y = pos.y;
node->size = width;
node->culled = false;
node->triangleCount = 0;
node->indices = NULL;
node->objPositions = NULL;
node->numObjs = MAX_TREES;
for(int child = 0; child < 4; child++)
node->nodes[child] = NULL;
std::vector<unsigned int> triList;
int numTriangles = CountTriangles(pos,width,triList);
if(numTriangles == 0) return;
if(numTriangles > MAX_TRIANGLES){
for(int child = 0; child < 4; child++){
offsetX = (((child % 2) < 1) ? -1.0f : 1.0f) * (width/4.0f);
offsetZ = (((child % 4) < 2) ? -1.0f : 1.0f) * (width/4.0f);
node->nodes[child] = new QuadTreeNode();
CreateTreeNode(node->nodes[child],vec2(pos.x + offsetX,pos.y + offsetZ),width/2,numObjs/2);
}
return;
}
node->triangleCount = numTriangles;
int vertexCount = numTriangles * 3;
node->indices = new unsigned int[vertexCount];
int index = 0;
int numTris = triList.size();
double startTime2 = glfwGetTime();
for(int triangle = 0; triangle < numTris; triangle++){
int vertIndex = triList[triangle] * 3;
node->indices[index++] = vertIndex++;
node->indices[index++] = vertIndex++;
node->indices[index++] = vertIndex++;
}
node->objPositions = new vec3[numObjs];
node->numObjs = numObjs;
//generate tree coords
for(int obj = 0; obj < numObjs; obj++){
int index = (rand() << 3) % vertexCount;
float slope = 1.0f - m_normals[node->indices[index]].y;
if(slope > 0.7f) continue;
node->objPositions[obj] = m_vertices[node->indices[index]];
}
}
void CSGPQuadTree::CreateTreeNode(CSGPTerrain* pTerrain, NodeType* node, float positionX, float positionZ, float width)
{
// Store the node position and size.
node->positionX = positionX;
node->positionZ = positionZ;
node->width = width;
// Initialize the triangle count to zero for the node.
node->triangleCount = 0;
// Initialize the children nodes of this node to null.
node->nodes[0] = NULL;
node->nodes[1] = NULL;
node->nodes[2] = NULL;
node->nodes[3] = NULL;
// Initialize the terrain chunks of this node to null.
node->terrainchunks.ensureStorageAllocated(4);
// Count the number of triangles that are inside this node.
uint32 numTriangles = CountTriangles(pTerrain, positionX, positionZ, width);
// Case 1: If there are no triangles in this node then return as it is empty and requires no processing.
if(numTriangles == 0)
{
return;
}
// Case 2: If there are too many triangles in this node then split it into four equal sized smaller tree nodes.
// If QuadNode smaller than one chunk, Do not split!
float offsetX, offsetZ;
if( (numTriangles > MAX_QUAD_TRIANGLES) && (width > SGPTT_TILE_METER * SGPTT_TILENUM) )
{
for(int i=0; i<4; i++)
{
// Calculate the position offsets for the new child node.
offsetX = (((i % 2) < 1) ? -1.0f : 1.0f) * (width / 4.0f);
offsetZ = (((i % 4) < 2) ? -1.0f : 1.0f) * (width / 4.0f);
// See if there are any triangles in the new node.
uint32 count = CountTriangles(pTerrain, (positionX + offsetX), (positionZ + offsetZ), (width / 2.0f));
if(count > 0)
{
// If there are triangles inside where this new node would be then create the child node.
node->nodes[i] = new NodeType;
// Extend the tree starting from this new child node now.
CreateTreeNode(pTerrain, node->nodes[i], (positionX + offsetX), (positionZ + offsetZ), (width / 2.0f));
node->NodeBoundingBox += node->nodes[i]->NodeBoundingBox;
}
}
return;
}
// Case 3: If this node is not empty and the triangle count for it is less than the max then
// this node is at the bottom of the tree so the list of terrain chunks to store in it.
node->triangleCount = numTriangles;
// Go through all the terrain chunks in this zone
uint32 center_x = uint32(positionX / SGPTT_TILE_METER / SGPTT_TILENUM);
uint32 center_z = uint32(positionZ / SGPTT_TILE_METER / SGPTT_TILENUM);
int32 center_width = int32(width / SGPTT_TILE_METER / SGPTT_TILENUM);
uint32 chunk_index = 0;
if( center_width == 1 )
{
chunk_index = (pTerrain->GetTerrainChunkSize() - 1 - center_z) * pTerrain->GetTerrainChunkSize() + center_x;
node->terrainchunks.add( pTerrain->m_TerrainChunks[chunk_index] );
node->NodeBoundingBox += pTerrain->m_TerrainChunks[chunk_index]->m_BoundingBox;
}
else
{
for( int32 j = -center_width/2; j<center_width/2; j++ )
{
for( int32 i = -center_width/2; i<center_width/2; i++ )
{
chunk_index = (pTerrain->GetTerrainChunkSize() - center_z + j) * pTerrain->GetTerrainChunkSize() +
(center_x + i);
node->terrainchunks.add( pTerrain->m_TerrainChunks[chunk_index] );
node->NodeBoundingBox += pTerrain->m_TerrainChunks[chunk_index]->m_BoundingBox;
}
}
}
return;
}
