Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// A simple tool for converting SpeedTree .spt files into .smd files
// for use in Source
//
//===========================================================================//
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "filesystem_tools.h"
#include "cmdlib.h"
#include "mathlib/mathlib.h"
#include "tier0/icommandline.h"
#include "SpeedTreeRT.h"
void OutputMaterialFile( char *filestub, bool bEnableAlphaTest, float alphaTest=0.0f )
{
char filename[MAX_PATH];
_snprintf( filename, MAX_PATH, "%smaterials\\Trees\\%s_VertexLit.vmt", gamedir, filestub );
FILE *file = fopen( filename, "wt" );
if( !file )
return;
fprintf( file, "\"VertexLitGeneric\"\n" );
fprintf( file, "{\n" );
fprintf( file, "\t\"$basetexture\" \"trees/%s\"\n", filestub);
fprintf( file, "\t\"$model\" \"1\"\n" );
fprintf( file, "\t\"$alphatest\" \"%d\"\n", bEnableAlphaTest?1:0 );
fprintf( file, "\t\"$alphatestreference\" \"%f\"\n", alphaTest );
fprintf( file, "}\n\n" );
fclose( file );
}
void OutputLeafMaterialFile( char *filestub, bool bEnableAlphaTest, float alphaTest=0.0f, float *pCenter=NULL )
{
char filename[MAX_PATH];
_snprintf( filename, MAX_PATH, "%smaterials\\Trees\\%s_TreeLeaf.vmt", gamedir, filestub );
FILE *file = fopen( filename, "wt" );
if( !file )
return;
fprintf( file, "\"TreeLeaf\"\n" );
fprintf( file, "{\n" );
fprintf( file, "\t\"$basetexture\" \"trees/%s\"\n", filestub);
fprintf( file, "\t\"$model\" \"1\"\n" );
fprintf( file, "\t\"$alphatest\" \"%d\"\n", bEnableAlphaTest?1:0 );
fprintf( file, "\t\"$alphatestreference\" \"%f\"\n", alphaTest );
fprintf( file, "\t\"$leafcenter\" \"[ %f %f %f ]\"\n", pCenter[0], pCenter[1], pCenter[2] );
fprintf( file, "}\n\n" );
fclose( file );
}
void OutputTreeGeometry( CSpeedTreeRT &speedTree, CSpeedTreeRT::SGeometry &sGeom, char *filename )
{
FILE *file = fopen( filename, "wt" );
if( !file )
return;
fprintf( file, "version 1\n" );
fprintf( file, "nodes\n" );
fprintf( file, "0 \"Tree\" -1\n" );
fprintf( file, "end\n" );
fprintf( file, "skeleton\n" );
fprintf( file, "time 0\n" );
fprintf( file, "0 0.0 0.0 0.0 0.0 0.0 0.0\n" );
fprintf( file, "end\n" );
fprintf( file, "triangles\n" );
CSpeedTreeRT::STextures sTextures;
speedTree.GetTextures( sTextures );
char branchTextureName[ MAX_PATH ];
_splitpath( sTextures.m_pBranchTextureFilename, NULL, NULL, branchTextureName, NULL );
float alphaTest = sGeom.m_fBranchAlphaTestValue/255.0f;
OutputMaterialFile( branchTextureName, false, alphaTest );
for( int nStrip=0;nStrip<sGeom.m_sBranches.m_usNumStrips;nStrip++ )
{
int nStripLength = sGeom.m_sBranches.m_pStripLengths[ nStrip ];
const unsigned short *pStripIndices = sGeom.m_sBranches.m_pStrips[ nStrip ];
for( int i=0;i<nStripLength-2;i++ )
{
int nIndices[3] = { pStripIndices[i], pStripIndices[i+1], pStripIndices[i+2] };
if( i%2 )
{
int tmp = nIndices[2];
nIndices[2] = nIndices[1];
nIndices[1] = tmp;
}
fprintf( file, "%s_VertexLit\n", branchTextureName );
for( int j=0;j<3;j++ )
{
const float *pPos = &sGeom.m_sBranches.m_pCoords[ nIndices[j]*3 ];
const float *pNormal = &sGeom.m_sBranches.m_pNormals[ nIndices[j]*3 ];
const float *pTexCoord = &sGeom.m_sBranches.m_pTexCoords0[ nIndices[j]*2 ];
fprintf( file, "0 %f %f %f %f %f %f %f %f 0\n", pPos[0], pPos[1], pPos[2],
pNormal[0], pNormal[1], pNormal[2],
pTexCoord[0], pTexCoord[1] );
}
}
}
for( unsigned int i=0;i<sTextures.m_uiFrondTextureCount;i++ )
{
char filestub[MAX_PATH];
_splitpath( sTextures.m_pFrondTextureFilenames[i], NULL, NULL, filestub, NULL );
alphaTest = sGeom.m_fFrondAlphaTestValue/255.0f;
OutputMaterialFile( filestub, true, alphaTest );
}
for( int nStrip=0;nStrip<sGeom.m_sFronds.m_usNumStrips;nStrip++ )
{
int nStripLength = sGeom.m_sFronds.m_pStripLengths[ nStrip ];
const unsigned short *pStripIndices = sGeom.m_sFronds.m_pStrips[ nStrip ];
for( int i=0;i<nStripLength-2;i++ )
{
int nIndices[3] = { pStripIndices[i], pStripIndices[i+1], pStripIndices[i+2] };
if( i%2 )
{
int tmp = nIndices[2];
nIndices[2] = nIndices[1];
nIndices[1] = tmp;
}
char frondTextureName[ MAX_PATH ];
_splitpath( sTextures.m_pFrondTextureFilenames[0], NULL, NULL, frondTextureName, NULL );
fprintf( file, "%s_VertexLit\n", frondTextureName );
for( int j=0;j<3;j++ )
{
const float *pPos = &sGeom.m_sFronds.m_pCoords[ nIndices[j]*3 ];
const float *pNormal = &sGeom.m_sFronds.m_pNormals[ nIndices[j]*3 ];
const float *pTexCoord = &sGeom.m_sFronds.m_pTexCoords0[ nIndices[j]*2 ];
fprintf( file, "0 %f %f %f %f %f %f %f %f 0\n", pPos[0], pPos[1], pPos[2],
pNormal[0], pNormal[1], pNormal[2],
pTexCoord[0], pTexCoord[1] );
}
}
}
float *pLeafCentres = new float[ sTextures.m_uiLeafTextureCount*3 ];
int *pLeafCounts = new int[ sTextures.m_uiLeafTextureCount ];
for( unsigned int i=0;i<sTextures.m_uiLeafTextureCount;i++ )
{
pLeafCentres[ i*3 ] = 0.0f;
pLeafCentres[ i*3+1 ] = 0.0f;
pLeafCentres[ i*3+2 ] = 0.0f;
pLeafCounts[ i ] = 0;
}
CSpeedTreeRT::SGeometry::SLeaf &leaves = sGeom.m_sLeaves0;
for( int i=0;i<leaves.m_usLeafCount;i++ )
{
int index = leaves.m_pLeafMapIndices[i] / 2;
char leafTextureName[ MAX_PATH ];
_splitpath( sTextures.m_pLeafTextureFilenames[ index ], NULL, NULL, leafTextureName, NULL );
const float *pPos = &leaves.m_pCenterCoords[ i*3 ];
const float *pCoords = leaves.m_pLeafMapCoords[ i ];
const float *pTex = leaves.m_pLeafMapTexCoords[i];
float d[3] = { pCoords[8] - pCoords[0], pCoords[9] - pCoords[1], pCoords[10] - pCoords[2] };
float size = sqrtf( d[0]*d[0] + d[1]*d[1] + d[2]*d[2] ) * 0.5f;
fprintf( file, "%s_TreeLeaf\n", leafTextureName );
fprintf( file, "0 %f %f %f %f %f 0.0 %f %f\n", pPos[0], pPos[1], pPos[2], pTex[0], pTex[1], -size, -size );
fprintf( file, "0 %f %f %f %f %f 0.0 %f %f\n", pPos[0], pPos[1], pPos[2], pTex[2], pTex[3], size, -size );
fprintf( file, "0 %f %f %f %f %f 0.0 %f %f\n", pPos[0], pPos[1], pPos[2], pTex[4], pTex[5], size, size );
fprintf( file, "%s_TreeLeaf\n", leafTextureName );
fprintf( file, "0 %f %f %f %f %f 0.0 %f %f\n", pPos[0], pPos[1], pPos[2], pTex[0], pTex[1], -size, -size );
fprintf( file, "0 %f %f %f %f %f 0.0 %f %f\n", pPos[0], pPos[1], pPos[2], pTex[4], pTex[5], size, size );
fprintf( file, "0 %f %f %f %f %f 0.0 %f %f\n", pPos[0], pPos[1], pPos[2], pTex[6], pTex[7], -size, size );
pLeafCentres[ index*3 ] += pPos[0];
pLeafCentres[ index*3+1 ] += pPos[1];
pLeafCentres[ index*3+2 ] += pPos[2];
pLeafCounts[ index ]++;
}
for( unsigned int i=0;i<sTextures.m_uiLeafTextureCount;i++ )
{
float oneOnCount = 1.0f / pLeafCounts[i];
pLeafCentres[ i*3 ] *= oneOnCount;
pLeafCentres[ i*3+1 ] *= oneOnCount;
pLeafCentres[ i*3+2 ] *= oneOnCount;
}
for( unsigned int i=0;i<sTextures.m_uiLeafTextureCount;i++ )
{
char filestub[ MAX_PATH ];
_splitpath( sTextures.m_pLeafTextureFilenames[i], NULL, NULL, filestub, NULL );
alphaTest = sGeom.m_sLeaves0.m_fAlphaTestValue/255.0f;
OutputLeafMaterialFile( filestub, true, alphaTest, &pLeafCentres[i*3] );
}
fprintf( file, "end\n\n" );
fclose( file );
}
void OutputTreeTextures( CSpeedTreeRT &speedTree )
{
CSpeedTreeRT::STextures sTextures;
speedTree.GetTextures( sTextures );
CSpeedTreeRT::SGeometry sGeom;
speedTree.GetGeometry( sGeom, SpeedTree_AllGeometry );
char filestub[MAX_PATH];
_splitpath( sTextures.m_pBranchTextureFilename, NULL, NULL, filestub, NULL );
float alphaTest = sGeom.m_fBranchAlphaTestValue/255.0f;
OutputMaterialFile( filestub, false, alphaTest );
for( unsigned int i=0;i<sTextures.m_uiFrondTextureCount;i++ )
{
_splitpath( sTextures.m_pFrondTextureFilenames[i], NULL, NULL, filestub, NULL );
alphaTest = sGeom.m_fFrondAlphaTestValue/255.0f;
OutputMaterialFile( filestub, true, alphaTest );
}
for( unsigned int i=0;i<sTextures.m_uiLeafTextureCount;i++ )
{
_splitpath( sTextures.m_pLeafTextureFilenames[i], NULL, NULL, filestub, NULL );
alphaTest = sGeom.m_sLeaves0.m_fAlphaTestValue/255.0f;
OutputLeafMaterialFile( filestub, true, alphaTest );
}
}
void OutputQCFile( char *treeName )
{
char smdFileName[MAX_PATH];
sprintf( smdFileName, "%s.smd", treeName );
char qcFileName[MAX_PATH];
sprintf( qcFileName, "%s.qc", treeName );
char smdAnimFileName[MAX_PATH];
sprintf( smdAnimFileName, "%s_anim.smd", treeName );
char mdlFileName[MAX_PATH];
sprintf( mdlFileName, "%s.mdl", treeName );
FILE *file = fopen( qcFileName, "wt" );
fprintf( file, "$modelname %s\n", mdlFileName );
fprintf( file, "$cdmaterials trees\n" );
fprintf( file, "$scale 1\n" );
fprintf( file, "$model %s \"%s\"\n", treeName, smdFileName );
fprintf( file, "$sequence idle \"%s_anim\" loop fps 15\n", treeName );
fclose( file );
file = fopen( smdAnimFileName, "wt" );
fprintf( file, "version 1\n" );
fprintf( file, "nodes\n" );
fprintf( file, "0 \"Tree\" -1\n" );
fprintf( file, "end\n" );
fprintf( file, "skeleton\n" );
fprintf( file, "time 0\n" );
fprintf( file, "0 0.0 0.0 0.0 0.0 0.0 0.0\n" );
fprintf( file, "end\n" );
fclose( file );
}
void main( int argc, char **argv )
{
CommandLine()->CreateCmdLine( argc, argv );
if( CommandLine()->ParmCount()!=2 )
{
printf( "usage : sptconvert <SPT file name>\n" );
exit(0);
}
MathLib_Init( 2.2f, 2.2f, 0.0f, 2.0f, false, false, false, false );
CmdLib_InitFileSystem( CommandLine()->GetParm(1) );
CSpeedTreeRT speedTree;
char treeName[MAX_PATH];
_splitpath( argv[1], NULL, NULL, treeName, NULL );
char smdFileName[MAX_PATH];
sprintf( smdFileName, "%s.smd", treeName );
char qcFileName[MAX_PATH];
sprintf( qcFileName, "%s.qc", treeName );
OutputQCFile( treeName );
if( speedTree.LoadTree( argv[1] ) )
{
if( speedTree.Compute( NULL, 1, false ) )
{
CSpeedTreeRT::SGeometry sGeom;
speedTree.GetGeometry( sGeom, SpeedTree_AllGeometry );
OutputTreeGeometry( speedTree, sGeom, smdFileName );
}
else
{
// Trouble with compute
}
}
else
{
// Trouble with load
}
}