DeclSkin.cpp

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/*
===========================================================================

Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company. 

This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).  

Doom 3 Source Code 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.

Doom 3 Source Code 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.

You should have received a copy of the GNU General Public License
along with Doom 3 Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#include "../idlib/precompiled.h"
#pragma hdrstop


/*
=================
idDeclSkin::Size
=================
*/
size_t idDeclSkin::Size( void ) const {
        return sizeof( idDeclSkin );
}

/*
================
idDeclSkin::FreeData
================
*/
void idDeclSkin::FreeData( void ) {
        mappings.Clear();
}

/*
================
idDeclSkin::Parse
================
*/
bool idDeclSkin::Parse( const char *text, const int textLength ) {
        idLexer src;
        idToken token, token2;

        src.LoadMemory( text, textLength, GetFileName(), GetLineNum() );
        src.SetFlags( DECL_LEXER_FLAGS );
        src.SkipUntilString( "{" );

        associatedModels.Clear();

        while (1) {
                if ( !src.ReadToken( &token ) ) {
                        break;
                }

                if ( !token.Icmp( "}" ) ) {
                        break;
                }
                if ( !src.ReadToken( &token2 ) ) {
                        src.Warning( "Unexpected end of file" );
                        MakeDefault();
                        return false;
                }

                if ( !token.Icmp( "model" ) ) {
                        associatedModels.Append( token2 );
                        continue;
                }

                skinMapping_t   map;

                if ( !token.Icmp( "*" ) ) {
                        // wildcard
                        map.from = NULL;
                } else {
                        map.from = declManager->FindMaterial( token );
                }

                map.to = declManager->FindMaterial( token2 );

                mappings.Append( map );
        }

        return false;
}

/*
================
idDeclSkin::SetDefaultText
================
*/
bool idDeclSkin::SetDefaultText( void ) {
        // if there exists a material with the same name
        if ( declManager->FindType( DECL_MATERIAL, GetName(), false ) ) {
                char generated[2048];

                idStr::snPrintf( generated, sizeof( generated ),
                                                "skin %s // IMPLICITLY GENERATED\n"
                                                "{\n"
                                                "_default %s\n"
                                                "}\n", GetName(), GetName() );
                SetText( generated );
                return true;
        } else {
                return false;
        }
}

/*
================
idDeclSkin::DefaultDefinition
================
*/
const char *idDeclSkin::DefaultDefinition( void ) const {
        return
                "{\n"
        "\t"    "\"*\"\t\"_default\"\n"
                "}";
}

/*
================
idDeclSkin::GetNumModelAssociations
================
*/
const int idDeclSkin::GetNumModelAssociations(void ) const {
        return associatedModels.Num(); 
}

/*
================
idDeclSkin::GetAssociatedModel
================
*/
const char *idDeclSkin::GetAssociatedModel( int index ) const {
        if ( index >= 0 && index < associatedModels.Num() ) {
                return associatedModels[ index ];
        }
        return "";
}

/*
===============
RemapShaderBySkin
===============
*/
const idMaterial *idDeclSkin::RemapShaderBySkin( const idMaterial *shader ) const {
        int             i;

        if ( !shader ) {
                return NULL;
        }

        // never remap surfaces that were originally nodraw, like collision hulls
        if ( !shader->IsDrawn() ) {
                return shader;
        }

        for ( i = 0; i < mappings.Num() ; i++ ) {
                const skinMapping_t     *map = &mappings[i];

                // NULL = wildcard match
                if ( !map->from || map->from == shader ) {
                        return map->to;
                }
        }

        // didn't find a match or wildcard, so stay the same
        return shader;
}