Xash3D FWGS engine.
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/*
mdldec.c - Half-Life Studio Model Decompiler
Copyright (C) 2020 Andrey Akhmichin
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "const.h"
#include "com_model.h"
#include "crtlib.h"
#include "studio.h"
#include "qc.h"
#include "smd.h"
#include "texture.h"
#include "utils.h"
#include "version.h"
char destdir[MAX_SYSPATH];
char modelfile[MAX_SYSPATH];
studiohdr_t *model_hdr;
studiohdr_t *texture_hdr;
studiohdr_t **anim_hdr;
/*
============
IsValidName
============
*/
static qboolean IsValidName( char *name )
{
if( !( isalpha( *name ) || isdigit( *name )))
return false;
while( *( ++name))
{
if( isalpha( *name ) || isdigit( *name )
|| *name == '.' || *name == '-' || *name == '_'
|| *name == ' ' || *name == '(' || *name == ')'
|| *name == '[' || *name == ']')
continue;
// Found control character Ctrl+Shift+A(SOH|^A|0x1) in the end of name in some models.
else if( name[1] == '\0' )
{
*name = '\0';
return true;
}
return false;
}
return true;
}
/*
============
TextureNameFix
============
*/
static void TextureNameFix( void )
{
int i, j, len, counter, protected = 0;
qboolean hasduplicates = false;
mstudiotexture_t *texture = (mstudiotexture_t *)( (byte *)texture_hdr + texture_hdr->textureindex ), *texture1;
for( i = 0; i < texture_hdr->numtextures; ++i, ++texture )
{
ExtractFileName( texture->name, sizeof( texture->name ));
if( !Q_strchr( texture->name, '.' ) )
Q_strncat( texture->name, ".bmp", sizeof( texture->name ));
}
texture -= i;
for( i = 0; i < texture_hdr->numtextures; ++i, ++texture )
{
if( !IsValidName( texture->name ))
{
Q_snprintf( texture->name, sizeof( texture->name ), "MDLDEC_Texture%i.bmp", ++protected );
continue;
}
counter = 0;
texture1 = (mstudiotexture_t *)( (byte *)texture_hdr + texture_hdr->textureindex );
for( j = 0; j < texture_hdr->numtextures; ++j, ++texture1 )
{
if( j != i && !Q_strncmp( texture1->name, texture->name, sizeof( texture1->name)))
{
len = Q_snprintf( texture1->name, sizeof( texture1->name ), "%s_%i.bmp", texture1->name, ++counter );
if( len == -1 )
Q_snprintf( texture1->name, sizeof( texture1->name ), "MDLDEC_Texture%i_%i.bmp", j, counter );
}
}
if( counter > 0 )
{
printf( "WARNING: Texture name \"%s\" is repeated %i times.\n", texture->name, counter );
hasduplicates = true;
}
}
if( protected )
printf( "WARNING: Gived name to %i protected texture(s).\n", protected );
if( hasduplicates )
puts( "WARNING: Added numeric suffix to repeated texture name(s)." );
}
/*
============
BodypartNameFix
============
*/
static void BodypartNameFix( void )
{
int i, j, k, len, counter, protected = 0, protected_models = 0;
qboolean hasduplicates = false;
mstudiobodyparts_t *bodypart = (mstudiobodyparts_t *) ( (byte *)model_hdr + model_hdr->bodypartindex );
mstudiomodel_t *model, *model1;
for( i = 0; i < model_hdr->numbodyparts; ++i, ++bodypart )
ExtractFileName( bodypart->name, sizeof( bodypart->name ));
bodypart -= i;
for( i = 0; i < model_hdr->numbodyparts; ++i, ++bodypart )
{
if( !IsValidName( bodypart->name ))
{
Q_snprintf( bodypart->name, sizeof( bodypart->name ), "MDLDEC_Bodypart%i", ++protected );
continue;
}
model = (mstudiomodel_t *)( (byte *)model_hdr + bodypart->modelindex );
for( j = 0; j < bodypart->nummodels; ++j, ++model )
ExtractFileName( model->name, sizeof( model->name ));
model -= j;
for( j = 0; j < bodypart->nummodels; ++j, ++model )
{
if( !IsValidName( model->name ))
{
Q_snprintf( model->name, sizeof( model->name ), "MDLDEC_Model%i", ++protected_models );
continue;
}
counter = 0;
model1 = (mstudiomodel_t *)( (byte *)model_hdr + bodypart->modelindex );
for( k = 0; k < bodypart->nummodels; ++k, ++model1 )
{
if( k != j && !Q_strncmp( model1->name, model->name, sizeof( model1->name )))
{
len = Q_snprintf( model1->name, sizeof( model1->name ), "%s_%i", model1->name, ++counter );
if( len == -1 )
Q_snprintf( model1->name, sizeof( model1->name ), "MDLDEC_Model%i_%i", k, counter );
}
}
if( counter > 0 )
{
printf( "WARNING: Sequence name \"%s\" is repeated %i times.\n", model->name, counter );
hasduplicates = true;
}
}
}
if( protected )
printf( "WARNING: Gived name to %i protected bodypart(s).\n", protected );
if( protected_models )
printf( "WARNING: Gived name to %i protected model(s).\n", protected_models );
if( hasduplicates )
puts( "WARNING: Added numeric suffix to repeated bodypart name(s)." );
}
/*
============
SequenceNameFix
============
*/
static void SequenceNameFix( void )
{
int i, j, len, counter, protected = 0;
qboolean hasduplicates = false;
mstudioseqdesc_t *seqdesc = (mstudioseqdesc_t *)( (byte *)model_hdr + model_hdr->seqindex ), *seqdesc1;
for( i = 0; i < model_hdr->numseq; ++i, ++seqdesc )
ExtractFileName( seqdesc->label, sizeof( seqdesc->label ));
seqdesc -= i;
for( i = 0; i < model_hdr->numseq; ++i, ++seqdesc )
{
if( !IsValidName( seqdesc->label ))
{
Q_snprintf( seqdesc->label, sizeof( seqdesc->label ), "MDLDEC_Sequence%i", ++protected );
continue;
}
counter = 0;
seqdesc1 = (mstudioseqdesc_t *)( (byte *)model_hdr + model_hdr->seqindex );
for( j = 0; j < model_hdr->numseq; ++j, ++seqdesc1 )
{
if( j != i && !Q_strncmp( seqdesc1->label, seqdesc->label, sizeof( seqdesc1->label )))
{
len = Q_snprintf( seqdesc1->label, sizeof( seqdesc1->label ), "%s_%i", seqdesc1->label, ++counter );
if( len == -1 )
Q_snprintf( seqdesc1->label, sizeof( seqdesc1->label ), "MDLDEC_Sequence%i_%i", j, counter );
}
}
if( counter > 0 )
{
printf( "WARNING: Sequence name \"%s\" is repeated %i times.\n", seqdesc->label, counter );
hasduplicates = true;
}
}
if( protected )
printf( "WARNING: Gived name to %i protected sequence(s).\n", protected );
if( hasduplicates )
puts( "WARNING: Added numeric suffix to repeated sequence name(s)." );
}
/*
============
BoneNameFix
============
*/
static void BoneNameFix( void )
{
int i, protected = 0;
mstudiobone_t *bone = (mstudiobone_t *)( (byte *)model_hdr + model_hdr->boneindex );
for( i = 0; i < model_hdr->numbones; ++i, ++bone )
{
bone->name[sizeof( bone->name ) - 1] = '\0';
if( !IsValidName( bone->name ) )
Q_snprintf( bone->name, sizeof( bone->name ), "MDLDEC_Bone%i", ++protected );
}
if( protected )
printf( "WARNING: Gived name to %i protected bone(s).\n", protected );
}
/*
============
LoadMDL
============
*/
static qboolean LoadMDL( const char *modelname )
{
int i;
size_t len;
off_t filesize;
char texturename[MAX_SYSPATH];
char seqgroupname[MAX_SYSPATH];
const char *ext;
const char id_mdlhdr[] = {'I', 'D', 'S', 'T'};
const char id_seqhdr[] = {'I', 'D', 'S', 'Q'};
printf( "MDL: %s\n", modelname );
len = Q_strlen( modelname );
if( len > MAX_SYSPATH - 3 )
{
fputs( "ERROR: Source path is too long.\n", stderr );
return false;
}
ext = COM_FileExtension( modelname );
if( !ext )
{
fprintf( stderr, "ERROR: Source file does not have extension.\n" );
return false;
}
if( Q_strcmp( ext, "mdl" ) )
{
fprintf( stderr, "ERROR: Only .mdl-files is supported.\n" );
return false;
}
model_hdr = (studiohdr_t *)LoadFile( modelname, &filesize );
if( filesize < sizeof( studiohdr_t ) || filesize != model_hdr->length )
{
fprintf( stderr, "ERROR: Wrong file size! File %s may be corrupted!\n", modelname );
return false;
}
if( !model_hdr )
{
fprintf( stderr, "ERROR: Can't open %s\n", modelname );
return false;
}
if( memcmp( &model_hdr->ident, id_mdlhdr, sizeof( id_mdlhdr ) ) )
{
if( !memcmp( &model_hdr->ident, id_seqhdr, sizeof( id_seqhdr ) ) )
fprintf( stderr, "ERROR: %s is not a main HL model file.\n", modelname );
else
fprintf( stderr, "ERROR: %s is not a valid HL model file.\n", modelname );
return false;
}
if( model_hdr->version != STUDIO_VERSION )
{
fprintf( stderr, "ERROR: %s has unknown Studio MDL format version %d.\n", modelname, model_hdr->version );
return false;
}
if( !model_hdr->numbodyparts )
{
fprintf( stderr, "ERROR: %s is not a main HL model file.\n", modelname );
return false;
}
if( destdir[0] != '\0' )
{
if( !MakeDirectory( destdir ) )
{
fprintf( stderr, "ERROR: Couldn't create directory %s\n", destdir );
return false;
}
COM_PathSlashFix( destdir );
}
else
COM_ExtractFilePath( modelname, destdir );
len -= ( sizeof( ".mdl" ) - 1 ); // path length without extension
if( !model_hdr->numtextures )
{
Q_strncpy( texturename, modelname, sizeof( texturename ));
Q_strncpy( &texturename[len], "t.mdl", sizeof( texturename ) - len );
texture_hdr = (studiohdr_t *)LoadFile( texturename, &filesize );
if( !texture_hdr )
{
#if !XASH_WIN32
// dirty hack for casesensetive filesystems
texturename[len] = 'T';
texture_hdr = (studiohdr_t *)LoadFile( texturename, &filesize );
if( !texture_hdr )
#endif
{
fprintf( stderr, "ERROR: Can't open external textures file %s\n", texturename );
return false;
}
}
if( filesize < sizeof( studiohdr_t ) || filesize != model_hdr->length )
{
fprintf( stderr, "ERROR: Wrong file size! File %s may be corrupted!\n", texturename );
return false;
}
if( memcmp( &texture_hdr->ident, id_mdlhdr, sizeof( id_mdlhdr ) )
|| !texture_hdr->numtextures )
{
fprintf( stderr, "ERROR: %s is not a valid external textures file.\n", texturename );
return false;
}
}
else
texture_hdr = model_hdr;
anim_hdr = malloc( sizeof( studiohdr_t* ) * model_hdr->numseqgroups );
if( !anim_hdr )
{
fputs( "ERROR: Couldn't allocate memory for sequences.\n", stderr );
return false;
}
anim_hdr[0] = model_hdr;
if( model_hdr->numseqgroups > 1 )
{
Q_strncpy( seqgroupname, modelname, sizeof( seqgroupname ));
for( i = 1; i < model_hdr->numseqgroups; i++ )
{
Q_snprintf( &seqgroupname[len], sizeof( seqgroupname ) - len, "%02d.mdl", i );
anim_hdr[i] = (studiohdr_t *)LoadFile( seqgroupname, &filesize );
if( !anim_hdr[i] )
{
fprintf( stderr, "ERROR: Can't open sequence file %s\n", seqgroupname );
return false;
}
if( filesize < sizeof( studiohdr_t ) || filesize != model_hdr->length )
{
fprintf( stderr, "ERROR: Wrong file size! File %s may be corrupted!\n", seqgroupname );
return false;
}
if( memcmp( &anim_hdr[i]->ident, id_seqhdr, sizeof( id_seqhdr ) ) )
{
fprintf( stderr, "ERROR: %s is not a valid sequence file.\n", seqgroupname );
return false;
}
}
}
COM_FileBase( modelname, modelfile, sizeof( modelfile ));
// Some validation checks was found in mdldec-golang by Psycrow101
if( model_hdr->numhitboxes > model_hdr->numbones * ( MAXSTUDIOSRCBONES / MAXSTUDIOBONES ))
{
printf( "WARNING: Invalid hitboxes number %d.\n", model_hdr->numhitboxes );
model_hdr->numhitboxes = 0;
}
else if( model_hdr->hitboxindex + model_hdr->numhitboxes * ( sizeof( mstudiobbox_t ) + sizeof( mstudiohitboxset_t )) > model_hdr->length )
{
printf( "WARNING: Invalid hitboxes offset %d.\n", model_hdr->hitboxindex );
model_hdr->numhitboxes = 0;
}
TextureNameFix();
BodypartNameFix();
SequenceNameFix();
BoneNameFix();
return true;
}
/*
============
ShowHelp
============
*/
static void ShowHelp( const char *app_name )
{
printf( "usage: %s source_file\n", app_name );
printf( " %s source_file target_directory\n", app_name );
}
int main( int argc, char *argv[] )
{
int ret = 0;
puts( "\nHalf-Life Studio Model Decompiler " APP_VERSION );
puts( "Copyright Flying With Gauss 2020 (c) " );
puts( "--------------------------------------------------" );
if( argc == 1 )
{
ShowHelp( argv[0] );
ret = 2;
goto end;
}
else if( argc == 3 )
{
if( Q_strlen( argv[2] ) > MAX_SYSPATH - 2 )
{
fputs( "ERROR: Destination path is too long.\n", stderr );
ret = 1;
goto end;
}
Q_strncpy( destdir, argv[2], sizeof( destdir ));
}
if( !LoadActivityList( argv[0] ) || !LoadMDL( argv[1] ) )
{
ret = 1;
goto end;
}
WriteQCScript();
WriteSMD();
WriteTextures();
puts( "Done." );
end:
puts( "--------------------------------------------------" );
return ret;
}