561 lines
14 KiB
C
561 lines
14 KiB
C
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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Copyright (C) 2007 HermitWorks Entertainment Corporation
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This file is part of the Space Trader source code.
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The Space Trader source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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The Space Trader source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the Space Trader source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#include "tr_local.h"
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#define LL(x) x=LittleLong(x)
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static qboolean R_LoadMD3 (model_t *mod, int lod, void *buffer, const char *name );
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model_t *loadmodel;
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/*
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** R_GetModelByHandle
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*/
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model_t *R_GetModelByHandle( qhandle_t index )
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{
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model_t *mod;
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// out of range gets the defualt model
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if( index < 1 || index >= tr.numModels )
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return tr.models[0];
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mod = tr.models[index];
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return mod;
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}
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//===============================================================================
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/*
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** R_AllocModel
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*/
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model_t *R_AllocModel( void ) {
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model_t *mod;
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if ( tr.numModels == MAX_MOD_KNOWN ) {
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return NULL;
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}
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mod = ri.Hunk_Alloc( sizeof( *tr.models[tr.numModels] ), h_low );
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mod->index = tr.numModels;
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tr.models[tr.numModels] = mod;
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tr.numModels++;
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return mod;
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}
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/*
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====================
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RE_RegisterModel
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Loads in a model for the given name
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Zero will be returned if the model fails to load.
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An entry will be retained for failed models as an
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optimization to prevent disk rescanning if they are
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asked for again.
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====================
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*/
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qhandle_t Q_EXTERNAL_CALL RE_RegisterModel( const char *name ) {
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model_t *mod;
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unsigned *buf;
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int lod;
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int ident;
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qboolean loaded;
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qhandle_t hModel;
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int numLoaded;
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if ( !name || !name[0] ) {
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ri.Printf( PRINT_ALL, "RE_RegisterModel: NULL name\n" );
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return 0;
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}
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if ( strlen( name ) >= MAX_QPATH ) {
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ri.Printf( PRINT_ERROR, "Model name exceeds MAX_QPATH\n" );
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return 0;
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}
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//
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// search the currently loaded models
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//
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for ( hModel = 1 ; hModel < tr.numModels; hModel++ ) {
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mod = tr.models[hModel];
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if ( !strcmp( mod->name, name ) ) {
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if( mod->type == MOD_BAD ) {
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return 0;
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}
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return hModel;
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}
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}
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// allocate a new model_t
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if ( ( mod = R_AllocModel() ) == NULL ) {
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ri.Printf( PRINT_WARNING, "RE_RegisterModel: R_AllocModel() failed for '%s'\n", name);
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return 0;
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}
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// only set the name after the model has been successfully loaded
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Q_strncpyz( mod->name, name, sizeof( mod->name ) );
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// make sure the render thread is stopped
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R_SyncRenderThread();
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mod->numLods = 0;
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if( Q_stricmp( name + strlen( name ) - 4, ".x42" ) == 0 )
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{
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qboolean succeeded;
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int len = ri.FS_ReadFile( name, (void **)&buf );
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if( !buf )
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goto fail;
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succeeded = R_LoadX42( mod, buf, len, name );
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ri.FS_FreeFile( buf );
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if( !succeeded )
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goto fail;
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return mod->index;
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}
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else
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{
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numLoaded = 0;
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for( lod = MD3_MAX_LODS - 1 ; lod >= 0 ; lod-- )
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{
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char filename[1024];
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strcpy( filename, name );
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if ( lod != 0 ) {
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char namebuf[80];
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if ( strrchr( filename, '.' ) ) {
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*strrchr( filename, '.' ) = 0;
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}
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sprintf( namebuf, "_%d.md3", lod );
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strcat( filename, namebuf );
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}
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ri.FS_ReadFile( filename, (void **)&buf );
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if ( !buf ) {
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continue;
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}
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loadmodel = mod;
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ident = LittleLong(*(unsigned *)buf);
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if ( ident != MD3_IDENT ) {
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ri.Printf (PRINT_WARNING,"RE_RegisterModel: unknown fileid for %s\n", name);
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goto fail;
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}
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loaded = R_LoadMD3( mod, lod, buf, name );
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ri.FS_FreeFile (buf);
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if ( !loaded ) {
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if ( lod == 0 ) {
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goto fail;
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} else {
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break;
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}
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} else {
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mod->numLods++;
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numLoaded++;
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// if we have a valid model and are biased
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// so that we won't see any higher detail ones,
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// stop loading them
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// if ( lod <= r_lodbias->integer ) {
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// break;
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// }
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}
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}
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if ( numLoaded ) {
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// duplicate into higher lod spots that weren't
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// loaded, in case the user changes r_lodbias on the fly
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for ( lod-- ; lod >= 0 ; lod-- ) {
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mod->numLods++;
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mod->md3[lod] = mod->md3[lod+1];
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}
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return mod->index;
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}
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#ifdef _DEBUG
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else {
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ri.Printf (PRINT_WARNING,"RE_RegisterModel: couldn't load %s\n", name);
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}
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#endif
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}
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fail:
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// we still keep the model_t around, so if the model name is asked for
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// again, we won't bother scanning the filesystem
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mod->type = MOD_BAD;
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return 0;
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}
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/*
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=================
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R_LoadMD3
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=================
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*/
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static qboolean R_LoadMD3 (model_t *mod, int lod, void *buffer, const char *mod_name ) {
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int i, j;
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md3Header_t *pinmodel;
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md3Frame_t *frame;
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md3Surface_t *surf;
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md3Shader_t *shader;
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md3Triangle_t *tri;
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md3St_t *st;
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md3XyzNormal_t *xyz;
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md3Tag_t *tag;
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int version;
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int size;
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pinmodel = (md3Header_t *)buffer;
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version = LittleLong (pinmodel->version);
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if (version != MD3_VERSION) {
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ri.Printf( PRINT_WARNING, "R_LoadMD3: %s has wrong version (%i should be %i)\n",
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mod_name, version, MD3_VERSION);
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return qfalse;
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}
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mod->type = MOD_MESH;
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size = LittleLong(pinmodel->ofsEnd);
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mod->dataSize += size;
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mod->md3[lod] = ri.Hunk_Alloc( size, h_low );
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Com_Memcpy (mod->md3[lod], buffer, LittleLong(pinmodel->ofsEnd) );
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LL(mod->md3[lod]->ident);
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LL(mod->md3[lod]->version);
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LL(mod->md3[lod]->numFrames);
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LL(mod->md3[lod]->numTags);
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LL(mod->md3[lod]->numSurfaces);
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LL(mod->md3[lod]->ofsFrames);
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LL(mod->md3[lod]->ofsTags);
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LL(mod->md3[lod]->ofsSurfaces);
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LL(mod->md3[lod]->ofsEnd);
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if ( mod->md3[lod]->numFrames < 1 ) {
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ri.Printf( PRINT_WARNING, "R_LoadMD3: %s has no frames\n", mod_name );
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return qfalse;
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}
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// swap all the frames
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frame = (md3Frame_t *) ( (byte *)mod->md3[lod] + mod->md3[lod]->ofsFrames );
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for ( i = 0 ; i < mod->md3[lod]->numFrames ; i++, frame++) {
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frame->radius = LittleFloat( frame->radius );
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for ( j = 0 ; j < 3 ; j++ ) {
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frame->bounds[0][j] = LittleFloat( frame->bounds[0][j] );
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frame->bounds[1][j] = LittleFloat( frame->bounds[1][j] );
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frame->localOrigin[j] = LittleFloat( frame->localOrigin[j] );
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}
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}
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// swap all the tags
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tag = (md3Tag_t *) ( (byte *)mod->md3[lod] + mod->md3[lod]->ofsTags );
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for ( i = 0 ; i < mod->md3[lod]->numTags * mod->md3[lod]->numFrames ; i++, tag++) {
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for ( j = 0 ; j < 3 ; j++ ) {
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tag->origin[j] = LittleFloat( tag->origin[j] );
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tag->axis[0][j] = LittleFloat( tag->axis[0][j] );
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tag->axis[1][j] = LittleFloat( tag->axis[1][j] );
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tag->axis[2][j] = LittleFloat( tag->axis[2][j] );
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}
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}
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// swap all the surfaces
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surf = (md3Surface_t *) ( (byte *)mod->md3[lod] + mod->md3[lod]->ofsSurfaces );
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for ( i = 0 ; i < mod->md3[lod]->numSurfaces ; i++) {
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LL(surf->ident);
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LL(surf->flags);
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LL(surf->numFrames);
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LL(surf->numShaders);
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LL(surf->numTriangles);
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LL(surf->ofsTriangles);
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LL(surf->numVerts);
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LL(surf->ofsShaders);
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LL(surf->ofsSt);
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LL(surf->ofsXyzNormals);
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LL(surf->ofsEnd);
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if ( surf->numVerts > SHADER_MAX_VERTEXES ) {
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ri.Error (ERR_DROP, "R_LoadMD3: %s has more than %i verts on a surface (%i)",
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mod_name, SHADER_MAX_VERTEXES, surf->numVerts );
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}
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if ( surf->numTriangles*3 > SHADER_MAX_INDEXES ) {
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ri.Error (ERR_DROP, "R_LoadMD3: %s has more than %i triangles on a surface (%i)",
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mod_name, SHADER_MAX_INDEXES / 3, surf->numTriangles );
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}
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// change to surface identifier
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surf->ident = SF_MD3;
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// lowercase the surface name so skin compares are faster
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Q_strlwr( surf->name );
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// strip off a trailing _1 or _2
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// this is a crutch for q3data being a mess
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j = strlen( surf->name );
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if ( j > 2 && surf->name[j-2] == '_' ) {
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surf->name[j-2] = 0;
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}
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// register the shaders
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shader = (md3Shader_t *) ( (byte *)surf + surf->ofsShaders );
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for ( j = 0 ; j < surf->numShaders ; j++, shader++ ) {
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shader_t *sh;
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sh = R_FindShader( shader->name, LIGHTMAP_NONE, qtrue );
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if ( sh->defaultShader ) {
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shader->shaderIndex = 0;
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} else {
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shader->shaderIndex = sh->index;
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}
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}
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// swap all the triangles
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tri = (md3Triangle_t *) ( (byte *)surf + surf->ofsTriangles );
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for ( j = 0 ; j < surf->numTriangles ; j++, tri++ ) {
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LL(tri->indexes[0]);
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LL(tri->indexes[1]);
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LL(tri->indexes[2]);
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}
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// swap all the ST
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st = (md3St_t *) ( (byte *)surf + surf->ofsSt );
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for ( j = 0 ; j < surf->numVerts ; j++, st++ ) {
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st->st[0] = LittleFloat( st->st[0] );
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st->st[1] = LittleFloat( st->st[1] );
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}
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// swap all the XyzNormals
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xyz = (md3XyzNormal_t *) ( (byte *)surf + surf->ofsXyzNormals );
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for ( j = 0 ; j < surf->numVerts * surf->numFrames ; j++, xyz++ )
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{
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xyz->xyz[0] = LittleShort( xyz->xyz[0] );
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xyz->xyz[1] = LittleShort( xyz->xyz[1] );
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xyz->xyz[2] = LittleShort( xyz->xyz[2] );
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xyz->normal = LittleShort( xyz->normal );
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}
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// find the next surface
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surf = (md3Surface_t *)( (byte *)surf + surf->ofsEnd );
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}
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return qtrue;
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}
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//=============================================================================
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/*
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** RE_BeginRegistration
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*/
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void Q_EXTERNAL_CALL RE_BeginRegistration( vidConfig_t *glconfigOut ) {
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R_Init();
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*glconfigOut = glConfig;
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R_SyncRenderThread();
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tr.viewCluster = -1; // force markleafs to regenerate
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R_ClearFlares();
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RE_ClearScene();
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tr.registered = qtrue;
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// NOTE: this sucks, for some reason the first stretch pic is never drawn
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// without this we'd see a white flash on a level load because the very
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// first time the level shot would not be drawn
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RE_StretchPic( 0, 0, 0, 0, NULL, 0, 0, 1, 1, 0 );
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}
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//=============================================================================
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/*
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===============
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R_ModelInit
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===============
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*/
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void R_ModelInit( void ) {
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model_t *mod;
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// leave a space for NULL model
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tr.numModels = 0;
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mod = R_AllocModel();
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mod->type = MOD_BAD;
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}
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/*
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================
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R_Modellist_f
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================
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*/
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void Q_EXTERNAL_CALL R_Modellist_f( void ) {
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int i, j;
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model_t *mod;
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int total;
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int lods;
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total = 0;
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for ( i = 1 ; i < tr.numModels; i++ ) {
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mod = tr.models[i];
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lods = 1;
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for ( j = 1 ; j < MD3_MAX_LODS ; j++ ) {
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if ( mod->md3[j] && mod->md3[j] != mod->md3[j-1] ) {
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lods++;
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}
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}
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ri.Printf( PRINT_ALL, "%8i : (%i) %s\n",mod->dataSize, lods, mod->name );
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total += mod->dataSize;
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}
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ri.Printf( PRINT_ALL, "%8i : Total models\n", total );
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#if 0 // not working right with new hunk
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if ( tr.world ) {
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ri.Printf( PRINT_ALL, "\n%8i : %s\n", tr.world->dataSize, tr.world->name );
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}
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#endif
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}
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//=============================================================================
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/*
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================
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R_GetTag
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================
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*/
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static md3Tag_t *R_GetTag( md3Header_t *mod, int frame, const char *tagName ) {
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md3Tag_t *tag;
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int i;
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if ( frame >= mod->numFrames ) {
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// it is possible to have a bad frame while changing models, so don't error
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frame = mod->numFrames - 1;
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}
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tag = (md3Tag_t *)((byte *)mod + mod->ofsTags) + frame * mod->numTags;
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for ( i = 0 ; i < mod->numTags ; i++, tag++ ) {
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if ( !strcmp( tag->name, tagName ) ) {
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return tag; // found it
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}
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}
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return NULL;
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}
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/*
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================
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R_LerpTag
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================
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*/
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int Q_EXTERNAL_CALL R_LerpTag( affine_t *tag, qhandle_t handle, int startFrame, int endFrame,
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float frac, const char *tagName ) {
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md3Tag_t *start, *end;
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int i;
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float frontLerp, backLerp;
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model_t *model;
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model = R_GetModelByHandle( handle );
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if( model->type == MOD_X42 )
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return R_LerpX42Tag( tag, model->x42, startFrame, endFrame, frac, tagName );
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if ( !model->md3[0] ) {
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AxisClear( tag->axis );
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VectorClear( tag->origin );
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return qfalse;
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}
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start = R_GetTag( model->md3[0], startFrame, tagName );
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end = R_GetTag( model->md3[0], endFrame, tagName );
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if ( !start || !end ) {
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AxisClear( tag->axis );
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VectorClear( tag->origin );
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return qfalse;
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}
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frontLerp = frac;
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backLerp = 1.0f - frac;
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for ( i = 0 ; i < 3 ; i++ ) {
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tag->origin[i] = start->origin[i] * backLerp + end->origin[i] * frontLerp;
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tag->axis[0][i] = start->axis[0][i] * backLerp + end->axis[0][i] * frontLerp;
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tag->axis[1][i] = start->axis[1][i] * backLerp + end->axis[1][i] * frontLerp;
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tag->axis[2][i] = start->axis[2][i] * backLerp + end->axis[2][i] * frontLerp;
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}
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VectorNormalize( tag->axis[0] );
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VectorNormalize( tag->axis[1] );
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VectorNormalize( tag->axis[2] );
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return qtrue;
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}
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/*
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====================
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R_ModelBounds
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====================
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*/
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void Q_EXTERNAL_CALL R_ModelBounds( qhandle_t handle, vec3_t mins, vec3_t maxs ) {
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model_t *model;
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md3Header_t *header;
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md3Frame_t *frame;
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model = R_GetModelByHandle( handle );
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if ( model->bmodel ) {
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VectorCopy( model->bmodel->bounds[0], mins );
|
|
VectorCopy( model->bmodel->bounds[1], maxs );
|
|
return;
|
|
}
|
|
|
|
if ( !model->md3[0] ) {
|
|
VectorClear( mins );
|
|
VectorClear( maxs );
|
|
return;
|
|
}
|
|
|
|
header = model->md3[0];
|
|
|
|
frame = (md3Frame_t *)( (byte *)header + header->ofsFrames );
|
|
|
|
VectorCopy( frame->bounds[0], mins );
|
|
VectorCopy( frame->bounds[1], maxs );
|
|
}
|