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source-engine/utils/vbsp/writebsp.cpp

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2020-04-22 16:56:21 +00:00
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//
//=============================================================================//
#include "vbsp.h"
#include "disp_vbsp.h"
#include "utlvector.h"
#include "faces.h"
#include "builddisp.h"
#include "tier1/strtools.h"
#include "utilmatlib.h"
#include "utldict.h"
#include "map.h"
int c_nofaces;
int c_facenodes;
// NOTE: This is a global used to link faces back to the tree node/portals they came from
// it's used when filling water volumes
node_t *dfacenodes[MAX_MAP_FACES];
/*
=========================================================
ONLY SAVE OUT PLANES THAT ARE ACTUALLY USED AS NODES
=========================================================
*/
void EmitFaceVertexes (face_t **list, face_t *f);
void AssignOccluderAreas();
/*
============
EmitPlanes
There is no oportunity to discard planes, because all of the original
brushes will be saved in the map.
============
*/
void EmitPlanes (void)
{
int i;
dplane_t *dp;
plane_t *mp;
int planetranslate[MAX_MAP_PLANES];
mp = g_MainMap->mapplanes;
for (i=0 ; i<g_MainMap->nummapplanes ; i++, mp++)
{
dp = &dplanes[numplanes];
planetranslate[i] = numplanes;
VectorCopy ( mp->normal, dp->normal);
dp->dist = mp->dist;
dp->type = mp->type;
numplanes++;
}
}
//========================================================
void EmitMarkFace (dleaf_t *leaf_p, face_t *f)
{
int i;
int facenum;
while (f->merged)
f = f->merged;
if (f->split[0])
{
EmitMarkFace (leaf_p, f->split[0]);
EmitMarkFace (leaf_p, f->split[1]);
return;
}
facenum = f->outputnumber;
if (facenum == -1)
return; // degenerate face
if (facenum < 0 || facenum >= numfaces)
Error ("Bad leafface");
for (i=leaf_p->firstleafface ; i<numleaffaces ; i++)
if (dleaffaces[i] == facenum)
break; // merged out face
if (i == numleaffaces)
{
if (numleaffaces >= MAX_MAP_LEAFFACES)
Error ("Too many detail brush faces, max = %d\n", MAX_MAP_LEAFFACES);
dleaffaces[numleaffaces] = facenum;
numleaffaces++;
}
}
/*
==================
EmitLeaf
==================
*/
void EmitLeaf (node_t *node)
{
dleaf_t *leaf_p;
portal_t *p;
int s;
face_t *f;
bspbrush_t *b;
int i;
int brushnum;
leafface_t *pList;
// emit a leaf
if (numleafs >= MAX_MAP_LEAFS)
Error ("Too many BSP leaves, max = %d", MAX_MAP_LEAFS);
node->diskId = numleafs;
leaf_p = &dleafs[numleafs];
numleafs++;
if( nummodels == 0 )
{
leaf_p->cluster = node->cluster;
}
else
{
// Submodels don't have clusters. If this isn't set to -1 here, then there
// will be multiple leaves (albeit from different models) that reference
// the same cluster and parts of the code like ivp.cpp's ConvertWaterModelToPhysCollide
// won't work.
leaf_p->cluster = -1;
}
leaf_p->contents = node->contents;
leaf_p->area = node->area;
// By default, assume the leaf can see the skybox.
// VRAD will do the actual computation to see if it really can see the skybox
leaf_p->flags = LEAF_FLAGS_SKY;
//
// write bounding box info
//
VECTOR_COPY (node->mins, leaf_p->mins);
VECTOR_COPY (node->maxs, leaf_p->maxs);
//
// write the leafbrushes
//
leaf_p->firstleafbrush = numleafbrushes;
for (b=node->brushlist ; b ; b=b->next)
{
if (numleafbrushes >= MAX_MAP_LEAFBRUSHES)
Error ("Too many brushes in one leaf, max = %d", MAX_MAP_LEAFBRUSHES);
brushnum = b->original - g_MainMap->mapbrushes;
for (i=leaf_p->firstleafbrush ; i<numleafbrushes ; i++)
{
if (dleafbrushes[i] == brushnum)
break;
}
if (i == numleafbrushes)
{
dleafbrushes[numleafbrushes] = brushnum;
numleafbrushes++;
}
}
leaf_p->numleafbrushes = numleafbrushes - leaf_p->firstleafbrush;
//
// write the leaffaces
//
if (leaf_p->contents & CONTENTS_SOLID)
return; // no leaffaces in solids
leaf_p->firstleafface = numleaffaces;
for (p = node->portals ; p ; p = p->next[s])
{
s = (p->nodes[1] == node);
f = p->face[s];
if (!f)
continue; // not a visible portal
EmitMarkFace (leaf_p, f);
}
// emit the detail faces
for ( pList = node->leaffacelist; pList; pList = pList->pNext )
{
EmitMarkFace( leaf_p, pList->pFace );
}
leaf_p->numleaffaces = numleaffaces - leaf_p->firstleafface;
}
// per face plane - original face "side" list
side_t *pOrigFaceSideList[MAX_MAP_PLANES];
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
int CreateOrigFace( face_t *f )
{
int i, j;
dface_t *of;
side_t *side;
int vIndices[128];
int eIndex[2];
winding_t *pWinding;
// not a real face!
if( !f->w )
return -1;
// get the original face -- the "side"
side = f->originalface;
// get the original face winding
if( !side->winding )
{
return -1;
}
//
// get the next original face
//
if( numorigfaces >= MAX_MAP_FACES )
Error( "Too many faces in map, max = %d", MAX_MAP_FACES );
of = &dorigfaces[numorigfaces];
numorigfaces++;
// set original face to -1 -- it is an origianl face!
of->origFace = -1;
//
// add side to plane list
//
side->next = pOrigFaceSideList[f->planenum];
pOrigFaceSideList[f->planenum] = side;
side->origIndex = numorigfaces - 1;
pWinding = CopyWinding( side->winding );
//
// plane info
//
of->planenum = side->planenum;
if ( side->contents & CONTENTS_DETAIL )
of->onNode = 0;
else
of->onNode = 1;
of->side = side->planenum & 1;
//
// edge info
//
of->firstedge = numsurfedges;
of->numedges = side->winding->numpoints;
//
// material info
//
of->texinfo = side->texinfo;
of->dispinfo = f->dispinfo;
//
// save the vertices
//
for( i = 0; i < pWinding->numpoints; i++ )
{
//
// compare vertices
//
vIndices[i] = GetVertexnum( pWinding->p[i] );
}
//
// save off points -- as edges
//
for( i = 0; i < pWinding->numpoints; i++ )
{
//
// look for matching edges first
//
eIndex[0] = vIndices[i];
eIndex[1] = vIndices[(i+1)%pWinding->numpoints];
for( j = firstmodeledge; j < numedges; j++ )
{
if( ( eIndex[0] == dedges[j].v[1] ) &&
( eIndex[1] == dedges[j].v[0] ) &&
( edgefaces[j][0]->contents == f->contents ) )
{
// check for multiple backward edges!! -- shouldn't have
if( edgefaces[j][1] )
continue;
// set back edge
edgefaces[j][1] = f;
//
// get next surface edge
//
if( numsurfedges >= MAX_MAP_SURFEDGES )
Error( "Too much brush geometry in bsp, numsurfedges == MAX_MAP_SURFEDGES" );
dsurfedges[numsurfedges] = -j;
numsurfedges++;
break;
}
}
if( j == numedges )
{
//
// get next edge
//
AddEdge( eIndex[0], eIndex[1], f );
//
// get next surface edge
//
if( numsurfedges >= MAX_MAP_SURFEDGES )
Error( "Too much brush geometry in bsp, numsurfedges == MAX_MAP_SURFEDGES" );
dsurfedges[numsurfedges] = ( numedges - 1 );
numsurfedges++;
}
}
// return the index
return ( numorigfaces - 1 );
}
//-----------------------------------------------------------------------------
// Purpose: search for a face within the origface list and return the index if
// found
// Input: f - the face to compare
// Output: the index of the face it found, -1 if not found
//-----------------------------------------------------------------------------
int FindOrigFace( face_t *f )
{
int i;
static int bClear = 0;
side_t *pSide;
//
// initially clear the face side lists (per face plane)
//
if( !bClear )
{
for( i = 0; i < MAX_MAP_PLANES; i++ )
{
pOrigFaceSideList[i] = NULL;
}
bClear = 1;
}
//
// compare the sides
//
for( pSide = pOrigFaceSideList[f->planenum]; pSide; pSide = pSide->next )
{
if( pSide == f->originalface )
return pSide->origIndex;
}
// original face not found in list
return -1;
}
//-----------------------------------------------------------------------------
// Purpose: to find an the original face within the list of original faces, if
// a match is not found then create a new origFace -- either way pass
// back the index of the origface in the list
// Input: f - face containing the original face information
// Output: the index of the origface in the origface list
//-----------------------------------------------------------------------------
int FindOrCreateOrigFace( face_t *f )
{
int index;
// check for an original face
if( !f->originalface )
return -1;
//
// find or create a orig face and return the index
//
index = FindOrigFace( f );
if( index == -1 )
return CreateOrigFace( f );
else if( index == -2 )
return -1;
return index;
}
/*
==================
EmitFace
==================
*/
void EmitFace( face_t *f, qboolean onNode )
{
dface_t *df;
int i;
int e;
// void SubdivideFaceBySubdivSize( face_t *f ); // garymcthack
// SubdivideFaceBySubdivSize( f );
// set initial output number
f->outputnumber = -1;
// degenerated
if( f->numpoints < 3 )
return;
// not a final face
if( f->merged || f->split[0] || f->split[1] )
return;
// don't emit NODRAW faces for runtime
if ( texinfo[f->texinfo].flags & SURF_NODRAW )
{
// keep NODRAW terrain surfaces though
if ( f->dispinfo == -1 )
return;
Warning("NODRAW on terrain surface!\n");
}
// save output number so leaffaces can use
f->outputnumber = numfaces;
//
// get the next available .bsp face slot
//
if (numfaces >= MAX_MAP_FACES)
Error( "Too many faces in map, max = %d", MAX_MAP_FACES );
df = &dfaces[numfaces];
// Save the correlation between dfaces and faces -- since dfaces doesnt have worldcraft face id
dfaceids.AddToTail();
dfaceids[numfaces].hammerfaceid = f->originalface->id;
numfaces++;
//
// plane info - planenum is used by qlight, but not quake
//
df->planenum = f->planenum;
df->onNode = onNode;
df->side = f->planenum & 1;
//
// material info
//
df->texinfo = f->texinfo;
df->dispinfo = f->dispinfo;
df->smoothingGroups = f->smoothingGroups;
// save the original "side"/face data
df->origFace = FindOrCreateOrigFace( f );
df->surfaceFogVolumeID = -1;
dfacenodes[numfaces-1] = f->fogVolumeLeaf;
if ( f->fogVolumeLeaf )
{
Assert( f->fogVolumeLeaf->planenum == PLANENUM_LEAF );
}
//
// edge info
//
df->firstedge = numsurfedges;
df->numedges = f->numpoints;
// UNDONE: Nodraw faces have no winding - revisit to see if this is necessary
if ( f->w )
{
df->area = WindingArea( f->w );
}
else
{
df->area = 0;
}
df->firstPrimID = f->firstPrimID;
df->SetNumPrims( f->numPrims );
df->SetDynamicShadowsEnabled( f->originalface->m_bDynamicShadowsEnabled );
//
// save off points -- as edges
//
for( i = 0; i < f->numpoints; i++ )
{
//e = GetEdge (f->pts[i], f->pts[(i+1)%f->numpoints], f);
e = GetEdge2 (f->vertexnums[i], f->vertexnums[(i+1)%f->numpoints], f);
if (numsurfedges >= MAX_MAP_SURFEDGES)
Error( "Too much brush geometry in bsp, numsurfedges == MAX_MAP_SURFEDGES" );
dsurfedges[numsurfedges] = e;
numsurfedges++;
}
// Create overlay face lists.
side_t *pSide = f->originalface;
if ( pSide )
{
int nOverlayCount = pSide->aOverlayIds.Count();
if ( nOverlayCount > 0 )
{
Overlay_AddFaceToLists( ( numfaces - 1 ), pSide );
}
nOverlayCount = pSide->aWaterOverlayIds.Count();
if ( nOverlayCount > 0 )
{
OverlayTransition_AddFaceToLists( ( numfaces - 1 ), pSide );
}
}
}
//-----------------------------------------------------------------------------
// Purpose: Emit all of the faces stored at the leaves (faces from detail brushes)
//-----------------------------------------------------------------------------
void EmitLeafFaces( face_t *pLeafFaceList )
{
face_t *f = pLeafFaceList;
while ( f )
{
EmitFace( f, false );
f = f->next;
}
}
//-----------------------------------------------------------------------------
// Purpose: Free the list of faces stored at the leaves
//-----------------------------------------------------------------------------
void FreeLeafFaces( face_t *pLeafFaceList )
{
int count = 0;
face_t *f, *next;
f = pLeafFaceList;
while ( f )
{
next = f->next;
FreeFace( f );
f = next;
count++;
}
}
/*
============
EmitDrawingNode_r
============
*/
int EmitDrawNode_r (node_t *node)
{
dnode_t *n;
face_t *f;
int i;
if (node->planenum == PLANENUM_LEAF)
{
EmitLeaf (node);
return -numleafs;
}
// emit a node
if (numnodes == MAX_MAP_NODES)
Error ("MAX_MAP_NODES");
node->diskId = numnodes;
n = &dnodes[numnodes];
numnodes++;
VECTOR_COPY (node->mins, n->mins);
VECTOR_COPY (node->maxs, n->maxs);
if (node->planenum & 1)
Error ("WriteDrawNodes_r: odd planenum");
n->planenum = node->planenum;
n->firstface = numfaces;
n->area = node->area;
if (!node->faces)
c_nofaces++;
else
c_facenodes++;
for (f=node->faces ; f ; f=f->next)
EmitFace (f, true);
n->numfaces = numfaces - n->firstface;
//
// recursively output the other nodes
//
for (i=0 ; i<2 ; i++)
{
if (node->children[i]->planenum == PLANENUM_LEAF)
{
n->children[i] = -(numleafs + 1);
EmitLeaf (node->children[i]);
}
else
{
n->children[i] = numnodes;
EmitDrawNode_r (node->children[i]);
}
}
return n - dnodes;
}
//=========================================================
// This will generate a scratchpad file with the level's geometry in it and the noshadow faces drawn red.
// #define SCRATCHPAD_NO_SHADOW_FACES
#if defined( SCRATCHPAD_NO_SHADOW_FACES )
#include "scratchpad_helpers.h"
IScratchPad3D *g_pPad;
#endif
void MarkNoShadowFaces()
{
#if defined( SCRATCHPAD_NO_SHADOW_FACES )
g_pPad = ScratchPad3D_Create();
ScratchPad_DrawWorld( g_pPad, false, CSPColor(1,1,1,0.3) );
for ( int iFace=0; iFace < numfaces; iFace++ )
{
dface_t *pFace = &dfaces[iFace];
if ( !pFace->AreDynamicShadowsEnabled() )
{
ScratchPad_DrawFace( g_pPad, pFace, iFace, CSPColor(1,0,0,1), Vector(1,0,0) );
ScratchPad_DrawFace( g_pPad, pFace, iFace, CSPColor(1,0,0,1), Vector(-1,0,0) );
ScratchPad_DrawFace( g_pPad, pFace, iFace, CSPColor(1,0,0,1), Vector(0,1,0) );
}
}
g_pPad->Release();
#endif
}
struct texinfomap_t
{
int refCount;
int outputIndex;
};
struct texdatamap_t
{
int refCount;
int outputIndex;
};
// Find the best used texinfo to remap this brush side
int FindMatchingBrushSideTexinfo( int sideIndex, const texinfomap_t *pMap )
{
dbrushside_t &side = dbrushsides[sideIndex];
// find one with the same flags & surfaceprops (even if the texture name is different)
int sideTexFlags = texinfo[side.texinfo].flags;
int sideTexData = texinfo[side.texinfo].texdata;
int sideSurfaceProp = g_SurfaceProperties[sideTexData];
for ( int j = 0; j < texinfo.Count(); j++ )
{
if ( pMap[j].refCount > 0 &&
texinfo[j].flags == sideTexFlags &&
g_SurfaceProperties[texinfo[j].texdata] == sideSurfaceProp )
{
// found one
return j;
}
}
// can't find a better match
return side.texinfo;
}
// Remove all unused texinfos and rebuild array
void ComapctTexinfoArray( texinfomap_t *pMap )
{
CUtlVector<texinfo_t> old;
old.CopyArray( texinfo.Base(), texinfo.Count() );
texinfo.RemoveAll();
int firstSky = -1;
int first2DSky = -1;
for ( int i = 0; i < old.Count(); i++ )
{
if ( !pMap[i].refCount )
{
pMap[i].outputIndex = -1;
continue;
}
// only add one sky texinfo + one 2D sky texinfo
if ( old[i].flags & SURF_SKY2D )
{
if ( first2DSky < 0 )
{
first2DSky = texinfo.AddToTail( old[i] );
}
pMap[i].outputIndex = first2DSky;
continue;
}
if ( old[i].flags & SURF_SKY )
{
if ( firstSky < 0 )
{
firstSky = texinfo.AddToTail( old[i] );
}
pMap[i].outputIndex = firstSky;
continue;
}
pMap[i].outputIndex = texinfo.AddToTail( old[i] );
}
}
void CompactTexdataArray( texdatamap_t *pMap )
{
CUtlVector<char> oldStringData;
oldStringData.CopyArray( g_TexDataStringData.Base(), g_TexDataStringData.Count() );
g_TexDataStringData.RemoveAll();
CUtlVector<int> oldStringTable;
oldStringTable.CopyArray( g_TexDataStringTable.Base(), g_TexDataStringTable.Count() );
g_TexDataStringTable.RemoveAll();
CUtlVector<dtexdata_t> oldTexData;
oldTexData.CopyArray( dtexdata, numtexdata );
// clear current table and rebuild
numtexdata = 0;
for ( int i = 0; i < oldTexData.Count(); i++ )
{
// unreferenced, note in map and skip
if ( !pMap[i].refCount )
{
pMap[i].outputIndex = -1;
continue;
}
pMap[i].outputIndex = numtexdata;
// get old string and re-add to table
const char *pString = &oldStringData[oldStringTable[oldTexData[i].nameStringTableID]];
int nameIndex = TexDataStringTable_AddOrFindString( pString );
// copy old texdata and fixup with new name in compacted table
dtexdata[numtexdata] = oldTexData[i];
dtexdata[numtexdata].nameStringTableID = nameIndex;
numtexdata++;
}
}
void CompactTexinfos()
{
Msg("Compacting texture/material tables...\n");
texinfomap_t *texinfoMap = new texinfomap_t[texinfo.Count()];
texdatamap_t *texdataMap = new texdatamap_t[numtexdata];
memset( texinfoMap, 0, sizeof(texinfoMap[0])*texinfo.Count() );
memset( texdataMap, 0, sizeof(texdataMap[0])*numtexdata );
int i;
// get texinfos referenced by faces
for ( i = 0; i < numfaces; i++ )
{
texinfoMap[dfaces[i].texinfo].refCount++;
}
// get texinfos referenced by brush sides
for ( i = 0; i < numbrushsides; i++ )
{
// not referenced by any visible geometry
Assert( dbrushsides[i].texinfo >= 0 );
if ( !texinfoMap[dbrushsides[i].texinfo].refCount )
{
dbrushsides[i].texinfo = FindMatchingBrushSideTexinfo( i, texinfoMap );
// didn't find anything suitable, go ahead and reference it
if ( !texinfoMap[dbrushsides[i].texinfo].refCount )
{
texinfoMap[dbrushsides[i].texinfo].refCount++;
}
}
}
// get texinfos referenced by overlays
for ( i = 0; i < g_nOverlayCount; i++ )
{
texinfoMap[g_Overlays[i].nTexInfo].refCount++;
}
for ( i = 0; i < numleafwaterdata; i++ )
{
if ( dleafwaterdata[i].surfaceTexInfoID >= 0 )
{
texinfoMap[dleafwaterdata[i].surfaceTexInfoID].refCount++;
}
}
for ( i = 0; i < *pNumworldlights; i++ )
{
if ( dworldlights[i].texinfo >= 0 )
{
texinfoMap[dworldlights[i].texinfo].refCount++;
}
}
for ( i = 0; i < g_nWaterOverlayCount; i++ )
{
if ( g_WaterOverlays[i].nTexInfo >= 0 )
{
texinfoMap[g_WaterOverlays[i].nTexInfo].refCount++;
}
}
// reference all used texdatas
for ( i = 0; i < texinfo.Count(); i++ )
{
if ( texinfoMap[i].refCount > 0 )
{
texdataMap[texinfo[i].texdata].refCount++;
}
}
int oldCount = texinfo.Count();
int oldTexdataCount = numtexdata;
int oldTexdataString = g_TexDataStringData.Count();
ComapctTexinfoArray( texinfoMap );
CompactTexdataArray( texdataMap );
for ( i = 0; i < texinfo.Count(); i++ )
{
int mapIndex = texdataMap[texinfo[i].texdata].outputIndex;
Assert( mapIndex >= 0 );
texinfo[i].texdata = mapIndex;
//const char *pName = TexDataStringTable_GetString( dtexdata[texinfo[i].texdata].nameStringTableID );
}
// remap texinfos on faces
for ( i = 0; i < numfaces; i++ )
{
Assert( texinfoMap[dfaces[i].texinfo].outputIndex >= 0 );
dfaces[i].texinfo = texinfoMap[dfaces[i].texinfo].outputIndex;
}
// remap texinfos on brushsides
for ( i = 0; i < numbrushsides; i++ )
{
Assert( texinfoMap[dbrushsides[i].texinfo].outputIndex >= 0 );
dbrushsides[i].texinfo = texinfoMap[dbrushsides[i].texinfo].outputIndex;
}
// remap texinfos on overlays
for ( i = 0; i < g_nOverlayCount; i++ )
{
g_Overlays[i].nTexInfo = texinfoMap[g_Overlays[i].nTexInfo].outputIndex;
}
// remap leaf water data
for ( i = 0; i < numleafwaterdata; i++ )
{
if ( dleafwaterdata[i].surfaceTexInfoID >= 0 )
{
dleafwaterdata[i].surfaceTexInfoID = texinfoMap[dleafwaterdata[i].surfaceTexInfoID].outputIndex;
}
}
// remap world lights
for ( i = 0; i < *pNumworldlights; i++ )
{
if ( dworldlights[i].texinfo >= 0 )
{
dworldlights[i].texinfo = texinfoMap[dworldlights[i].texinfo].outputIndex;
}
}
// remap water overlays
for ( i = 0; i < g_nWaterOverlayCount; i++ )
{
if ( g_WaterOverlays[i].nTexInfo >= 0 )
{
g_WaterOverlays[i].nTexInfo = texinfoMap[g_WaterOverlays[i].nTexInfo].outputIndex;
}
}
Msg("Reduced %d texinfos to %d\n", oldCount, texinfo.Count() );
Msg("Reduced %d texdatas to %d (%d bytes to %d)\n", oldTexdataCount, numtexdata, oldTexdataString, g_TexDataStringData.Count() );
delete[] texinfoMap;
delete[] texdataMap;
}
/*
============
WriteBSP
============
*/
void WriteBSP (node_t *headnode, face_t *pLeafFaceList )
{
int i;
int oldfaces;
int oldorigfaces;
c_nofaces = 0;
c_facenodes = 0;
qprintf ("--- WriteBSP ---\n");
oldfaces = numfaces;
oldorigfaces = numorigfaces;
GetEdge2_InitOptimizedList();
EmitLeafFaces( pLeafFaceList );
dmodels[nummodels].headnode = EmitDrawNode_r (headnode);
// Only emit area portals for the main world.
if( nummodels == 0 )
{
EmitAreaPortals (headnode);
}
//
// add all displacement faces for the particular model
//
for( i = 0; i < nummapdispinfo; i++ )
{
int entityIndex = GetDispInfoEntityNum( &mapdispinfo[i] );
if( entityIndex == entity_num )
{
EmitFaceVertexes( NULL, &mapdispinfo[i].face );
EmitFace( &mapdispinfo[i].face, FALSE );
}
}
EmitWaterVolumesForBSP( &dmodels[nummodels], headnode );
qprintf ("%5i nodes with faces\n", c_facenodes);
qprintf ("%5i nodes without faces\n", c_nofaces);
qprintf ("%5i faces\n", numfaces-oldfaces);
qprintf( "%5i original faces\n", numorigfaces-oldorigfaces );
}
//===========================================================
/*
============
SetModelNumbers
============
*/
void SetModelNumbers (void)
{
int i;
int models;
char value[10];
models = 1;
for (i=1 ; i<num_entities ; i++)
{
if (!entities[i].numbrushes)
continue;
if ( !IsFuncOccluder(i) )
{
sprintf (value, "*%i", models);
models++;
}
else
{
sprintf (value, "");
}
SetKeyValue (&entities[i], "model", value);
}
}
/*
============
SetLightStyles
============
*/
#define MAX_SWITCHED_LIGHTS 32
void SetLightStyles (void)
{
int stylenum;
char *t;
entity_t *e;
int i, j;
char value[10];
char lighttargets[MAX_SWITCHED_LIGHTS][64];
// any light that is controlled (has a targetname)
// must have a unique style number generated for it
stylenum = 0;
for (i=1 ; i<num_entities ; i++)
{
e = &entities[i];
t = ValueForKey (e, "classname");
if (Q_strncasecmp (t, "light", 5))
continue;
// This is not true for dynamic lights
if (!Q_strcasecmp (t, "light_dynamic"))
continue;
t = ValueForKey (e, "targetname");
if (!t[0])
continue;
// find this targetname
for (j=0 ; j<stylenum ; j++)
if (!strcmp (lighttargets[j], t))
break;
if (j == stylenum)
{
if (stylenum == MAX_SWITCHED_LIGHTS)
Error ("Too many switched lights (error at light %s), max = %d", t, MAX_SWITCHED_LIGHTS);
strcpy (lighttargets[j], t);
stylenum++;
}
sprintf (value, "%i", 32 + j);
char *pCurrentStyle = ValueForKey( e, "style" );
// the designer has set a default lightstyle as well as making the light switchable
if ( pCurrentStyle )
{
int oldStyle = atoi(pCurrentStyle);
if ( oldStyle != 0 )
{
// save off the default style so the game code can make a switchable copy of it
SetKeyValue( e, "defaultstyle", pCurrentStyle );
}
}
SetKeyValue (e, "style", value);
}
}
/*
============
EmitBrushes
============
*/
void EmitBrushes (void)
{
int i, j, bnum, s, x;
dbrush_t *db;
mapbrush_t *b;
dbrushside_t *cp;
Vector normal;
vec_t dist;
int planenum;
numbrushsides = 0;
numbrushes = g_MainMap->nummapbrushes;
for (bnum=0 ; bnum<g_MainMap->nummapbrushes ; bnum++)
{
b = &g_MainMap->mapbrushes[bnum];
db = &dbrushes[bnum];
db->contents = b->contents;
db->firstside = numbrushsides;
db->numsides = b->numsides;
for (j=0 ; j<b->numsides ; j++)
{
if (numbrushsides == MAX_MAP_BRUSHSIDES)
Error ("MAX_MAP_BRUSHSIDES");
cp = &dbrushsides[numbrushsides];
numbrushsides++;
cp->planenum = b->original_sides[j].planenum;
cp->texinfo = b->original_sides[j].texinfo;
if ( cp->texinfo == -1 )
{
cp->texinfo = g_MainMap->g_ClipTexinfo;
}
cp->bevel = b->original_sides[j].bevel;
}
// add any axis planes not contained in the brush to bevel off corners
for (x=0 ; x<3 ; x++)
for (s=-1 ; s<=1 ; s+=2)
{
// add the plane
VectorCopy (vec3_origin, normal);
normal[x] = s;
if (s == -1)
dist = -b->mins[x];
else
dist = b->maxs[x];
planenum = g_MainMap->FindFloatPlane (normal, dist);
for (i=0 ; i<b->numsides ; i++)
if (b->original_sides[i].planenum == planenum)
break;
if (i == b->numsides)
{
if (numbrushsides >= MAX_MAP_BRUSHSIDES)
Error ("MAX_MAP_BRUSHSIDES");
dbrushsides[numbrushsides].planenum = planenum;
dbrushsides[numbrushsides].texinfo =
dbrushsides[numbrushsides-1].texinfo;
numbrushsides++;
db->numsides++;
}
}
}
}
/*
==================
BeginBSPFile
==================
*/
void BeginBSPFile (void)
{
// these values may actually be initialized
// if the file existed when loaded, so clear them explicitly
nummodels = 0;
numfaces = 0;
numnodes = 0;
numbrushsides = 0;
numvertexes = 0;
numleaffaces = 0;
numleafbrushes = 0;
numsurfedges = 0;
// edge 0 is not used, because 0 can't be negated
numedges = 1;
// leave vertex 0 as an error
numvertexes = 1;
// leave leaf 0 as an error
numleafs = 1;
dleafs[0].contents = CONTENTS_SOLID;
// BUGBUG: This doesn't work!
#if 0
// make a default empty leaf for the tracing code
memset( &dleafs[1], 0, sizeof(dleafs[1]) );
dleafs[1].contents = CONTENTS_EMPTY;
#endif
}
// We can't calculate this properly until vvis (since we need vis to do this), so we set
// to zero everywhere by default.
static void ClearDistToClosestWater( void )
{
int i;
for( i = 0; i < numleafs; i++ )
{
g_LeafMinDistToWater[i] = 0;
}
}
void DiscoverMacroTextures()
{
CUtlDict<int,int> tempDict;
g_FaceMacroTextureInfos.SetSize( numfaces );
for ( int iFace=0; iFace < numfaces; iFace++ )
{
texinfo_t *pTexInfo = &texinfo[dfaces[iFace].texinfo];
if ( pTexInfo->texdata < 0 )
continue;
dtexdata_t *pTexData = &dtexdata[pTexInfo->texdata];
const char *pMaterialName = &g_TexDataStringData[ g_TexDataStringTable[pTexData->nameStringTableID] ];
MaterialSystemMaterial_t hMaterial = FindMaterial( pMaterialName, NULL, false );
const char *pMacroTextureName = GetMaterialVar( hMaterial, "$macro_texture" );
if ( pMacroTextureName )
{
if ( tempDict.Find( pMacroTextureName ) == tempDict.InvalidIndex() )
{
Msg( "-- DiscoverMacroTextures: %s\n", pMacroTextureName );
tempDict.Insert( pMacroTextureName, 0 );
}
int stringID = TexDataStringTable_AddOrFindString( pMacroTextureName );
g_FaceMacroTextureInfos[iFace].m_MacroTextureNameID = (unsigned short)stringID;
}
else
{
g_FaceMacroTextureInfos[iFace].m_MacroTextureNameID = 0xFFFF;
}
}
}
// Make sure that we have a water lod control entity if we have water in the map.
void EnsurePresenceOfWaterLODControlEntity( void )
{
extern bool g_bHasWater;
if( !g_bHasWater )
{
// Don't bother if there isn't any water in the map.
return;
}
for( int i=0; i < num_entities; i++ )
{
entity_t *e = &entities[i];
const char *pClassName = ValueForKey( e, "classname" );
if( !Q_stricmp( pClassName, "water_lod_control" ) )
{
// Found one!!!!
return;
}
}
// None found, add one.
Warning( "Water found with no water_lod_control entity, creating a default one.\n" );
entity_t *mapent = &entities[num_entities];
num_entities++;
memset(mapent, 0, sizeof(*mapent));
mapent->firstbrush = g_MainMap->nummapbrushes;
mapent->numbrushes = 0;
SetKeyValue( mapent, "classname", "water_lod_control" );
SetKeyValue( mapent, "cheapwaterstartdistance", "1000" );
SetKeyValue( mapent, "cheapwaterenddistance", "2000" );
}
/*
============
EndBSPFile
============
*/
void EndBSPFile (void)
{
// Mark noshadow faces.
MarkNoShadowFaces();
EmitBrushes ();
EmitPlanes ();
// stick flat normals at the verts
SaveVertexNormals();
// Figure out lightmap extents for all faces.
UpdateAllFaceLightmapExtents();
// Generate geometry and lightmap alpha for displacements.
EmitDispLMAlphaAndNeighbors();
// Emit overlay data.
Overlay_EmitOverlayFaces();
OverlayTransition_EmitOverlayFaces();
// phys collision needs dispinfo to operate (needs to generate phys collision for displacement surfs)
EmitPhysCollision();
// We can't calculate this properly until vvis (since we need vis to do this), so we set
// to zero everywhere by default.
ClearDistToClosestWater();
// Emit static props found in the .vmf file
EmitStaticProps();
// Place detail props found in .vmf and based on material properties
EmitDetailObjects();
// Compute bounds after creating disp info because we need to reference it
ComputeBoundsNoSkybox();
// Make sure that we have a water lod control eneity if we have water in the map.
EnsurePresenceOfWaterLODControlEntity();
// Doing this here because stuff about may filter out entities
UnparseEntities ();
// remove unused texinfos
CompactTexinfos();
// Figure out which faces want macro textures.
DiscoverMacroTextures();
char fileName[1024];
V_strncpy( fileName, source, sizeof( fileName ) );
V_DefaultExtension( fileName, ".bsp", sizeof( fileName ) );
Msg ("Writing %s\n", fileName);
WriteBSPFile (fileName);
}
/*
==================
BeginModel
==================
*/
int firstmodleaf;
void BeginModel (void)
{
dmodel_t *mod;
int start, end;
mapbrush_t *b;
int j;
entity_t *e;
Vector mins, maxs;
if (nummodels == MAX_MAP_MODELS)
Error ("Too many brush models in map, max = %d", MAX_MAP_MODELS);
mod = &dmodels[nummodels];
mod->firstface = numfaces;
firstmodleaf = numleafs;
firstmodeledge = numedges;
firstmodelface = numfaces;
//
// bound the brushes
//
e = &entities[entity_num];
start = e->firstbrush;
end = start + e->numbrushes;
ClearBounds (mins, maxs);
for (j=start ; j<end ; j++)
{
b = &g_MainMap->mapbrushes[j];
if (!b->numsides)
continue; // not a real brush (origin brush)
AddPointToBounds (b->mins, mins, maxs);
AddPointToBounds (b->maxs, mins, maxs);
}
VectorCopy (mins, mod->mins);
VectorCopy (maxs, mod->maxs);
}
/*
==================
EndModel
==================
*/
void EndModel (void)
{
dmodel_t *mod;
mod = &dmodels[nummodels];
mod->numfaces = numfaces - mod->firstface;
nummodels++;
}
//-----------------------------------------------------------------------------
// figure out which leaf a point is in
//-----------------------------------------------------------------------------
static int PointLeafnum_r (const Vector& p, int num)
{
float d;
while (num >= 0)
{
dnode_t* node = dnodes + num;
dplane_t* plane = dplanes + node->planenum;
if (plane->type < 3)
d = p[plane->type] - plane->dist;
else
d = DotProduct (plane->normal, p) - plane->dist;
if (d < 0)
num = node->children[1];
else
num = node->children[0];
}
return -1 - num;
}
int PointLeafnum ( dmodel_t* pModel, const Vector& p )
{
return PointLeafnum_r (p, pModel->headnode);
}
//-----------------------------------------------------------------------------
// Adds a noew to the bounding box
//-----------------------------------------------------------------------------
static void AddNodeToBounds(int node, CUtlVector<int>& skipAreas, Vector& mins, Vector& maxs)
{
// not a leaf
if (node >= 0)
{
AddNodeToBounds( dnodes[node].children[0], skipAreas, mins, maxs );
AddNodeToBounds( dnodes[node].children[1], skipAreas, mins, maxs );
}
else
{
int leaf = - 1 - node;
// Don't bother with solid leaves
if (dleafs[leaf].contents & CONTENTS_SOLID)
return;
// Skip 3D skybox
int i;
for ( i = skipAreas.Count(); --i >= 0; )
{
if (dleafs[leaf].area == skipAreas[i])
return;
}
unsigned int firstface = dleafs[leaf].firstleafface;
for ( i = 0; i < dleafs[leaf].numleaffaces; ++i )
{
unsigned int face = dleaffaces[ firstface + i ];
// Skip skyboxes + nodraw
texinfo_t& tex = texinfo[dfaces[face].texinfo];
if (tex.flags & (SURF_SKY | SURF_NODRAW))
continue;
unsigned int firstedge = dfaces[face].firstedge;
Assert( firstedge >= 0 );
for (int j = 0; j < dfaces[face].numedges; ++j)
{
Assert( firstedge+j < numsurfedges );
int edge = abs(dsurfedges[firstedge+j]);
dedge_t* pEdge = &dedges[edge];
Assert( pEdge->v[0] >= 0 );
Assert( pEdge->v[1] >= 0 );
AddPointToBounds (dvertexes[pEdge->v[0]].point, mins, maxs);
AddPointToBounds (dvertexes[pEdge->v[1]].point, mins, maxs);
}
}
}
}
//-----------------------------------------------------------------------------
// Check to see if a displacement lives in any leaves that are not
// in the 3d skybox
//-----------------------------------------------------------------------------
bool IsBoxInsideWorld( int node, CUtlVector<int> &skipAreas, const Vector &vecMins, const Vector &vecMaxs )
{
while( 1 )
{
// leaf
if (node < 0)
{
// get the leaf
int leaf = - 1 - node;
// Don't bother with solid leaves
if (dleafs[leaf].contents & CONTENTS_SOLID)
return false;
// Skip 3D skybox
int i;
for ( i = skipAreas.Count(); --i >= 0; )
{
if ( dleafs[leaf].area == skipAreas[i] )
return false;
}
return true;
}
//
// get displacement bounding box position relative to the node plane
//
dnode_t *pNode = &dnodes[ node ];
dplane_t *pPlane = &dplanes[ pNode->planenum ];
int sideResult = BrushBspBoxOnPlaneSide( vecMins, vecMaxs, pPlane );
// front side
if( sideResult == 1 )
{
node = pNode->children[0];
}
// back side
else if( sideResult == 2 )
{
node = pNode->children[1];
}
//split
else
{
if ( IsBoxInsideWorld( pNode->children[0], skipAreas, vecMins, vecMaxs ) )
return true;
node = pNode->children[1];
}
}
}
//-----------------------------------------------------------------------------
// Adds the displacement surfaces in the world to the bounds
//-----------------------------------------------------------------------------
void AddDispsToBounds( int nHeadNode, CUtlVector<int>& skipAreas, Vector &vecMins, Vector &vecMaxs )
{
Vector vecDispMins, vecDispMaxs;
// first determine how many displacement surfaces there will be per leaf
int i;
for ( i = 0; i < g_dispinfo.Count(); ++i )
{
ComputeDispInfoBounds( i, vecDispMins, vecDispMaxs );
if ( IsBoxInsideWorld( nHeadNode, skipAreas, vecDispMins, vecDispMaxs ) )
{
AddPointToBounds( vecDispMins, vecMins, vecMaxs );
AddPointToBounds( vecDispMaxs, vecMins, vecMaxs );
}
}
}
//-----------------------------------------------------------------------------
// Compute the bounding box, excluding 3D skybox + skybox, add it to keyvalues
//-----------------------------------------------------------------------------
void ComputeBoundsNoSkybox( )
{
// Iterate over all world leaves, skip those which are part of skybox
Vector mins, maxs;
ClearBounds (mins, maxs);
AddNodeToBounds( dmodels[0].headnode, g_SkyAreas, mins, maxs );
AddDispsToBounds( dmodels[0].headnode, g_SkyAreas, mins, maxs );
// Add the bounds to the worldspawn data
for (int i = 0; i < num_entities; ++i)
{
char* pEntity = ValueForKey(&entities[i], "classname");
if (!strcmp(pEntity, "worldspawn"))
{
char string[32];
sprintf (string, "%i %i %i", (int)mins[0], (int)mins[1], (int)mins[2]);
SetKeyValue (&entities[i], "world_mins", string);
sprintf (string, "%i %i %i", (int)maxs[0], (int)maxs[1], (int)maxs[2]);
SetKeyValue (&entities[i], "world_maxs", string);
break;
}
}
}
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