K3dFaceBuild.cpp

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/***************************************************************************
 *   Copyright (C) 2007 by Jan Koci   *
 *   honza.koci@email.cz   *
 *   http://kengine.sourceforge.net/tutorial/
 *                                                                         *
 *   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 2 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.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include "K3dFaceBuild.h"

K3dFaceBuild::K3dFaceBuild(K3dGameData *_pGameData)
{
        m_pGameData = _pGameData;
        m_pVertexWork = m_pGameData->GetVertexWork();
}

K3dFaceBuild::~K3dFaceBuild(void)
{
        DeleteFaces();
}

K3dFaceObj *K3dFaceBuild::CreateNewFaceObj()
{
        // Create new face
        K3dFaceObj *pFace = new K3dFaceObj(m_pGameData);
        // Add face pointer to safe pointer array
        m_pGameData->GetFaceObjSP().Add(pFace);
        pFace->SetColor(m_pGameData->GetColor4SP().New());
        pFace->SetNormal(m_pGameData->GetVector3SP().New());
        pFace->SetCentre(m_pGameData->GetVector3SP().New());
        pFace->GetId() = m_pGameData->GetFaceObjSP().GetNum()-1;
        return pFace;
}

void K3dFaceBuild::LoadFaces()
{
        cout << "void K3dFaceBuild::LoadFaces() " << endl;
        K3dString strFc = "void K3dFaceBuild::LoadFaces() -- Doesn`t load  ";
        K3dString strOut;

        // Get lua from global data
        K3dLua *pLua = m_pGameData->GetLua();

        // Get number of faces
        pLua->LuaGetGlobal(K_STR_NUM_FACES);
    if (!pLua->LuaIsNumber(-1))
        {
        strOut = strFc + K_STR_NUM_FACES;
                strOut += " from map file ";
                pLua->LuaError(strOut.GetString().c_str());
                //cerr << "Warning :: void K3dFaceBuild::LoadFaces() -- Doesn`t load " << K_STR_NUM_FACES << " from map file" << endl;
                return;
    }
        
        int iNumFaces = (int) pLua->LuaToNumber(-1);
        for(int i=0; i<iNumFaces; i++)
        {
                K3dFaceObj *pFace = CreateNewFaceObj();
                K3dString kString(K_STR_FACE);
                // Add number behind string
                kString.AddNumber(i);
                
                pLua->LuaGetGlobal(kString.GetString().c_str());
                if (!pLua->LuaIsTable(-1))
                {
                        strOut = strFc + kString;
                        strOut += " is not a valid triangle table";
                        pLua->LuaError(strOut.GetString().c_str());
                }
                pFace->GetName() = pLua->LuaGetFieldString(K_STR_NAME);
                pFace->GetId() = m_pGameData->GetFaceObjSP().GetNum()-1;
                int iNumVerts = (int)pLua->LuaGetFieldNumber(K_STR_NUM_VERTICES);
                const char* strName;
                //TIntArray *pVertexArray = pFace->GetVertexArray();
                for(int iId=0; iId<iNumVerts; iId++)
                {
                        kString.GetString() = K_STR_VERTEX;
                        // Add number behind string
                        kString.AddNumber(iId);
                        strName = pLua->LuaGetFieldString(kString.GetString().c_str());
                        K3dVertexObj *pVertex = m_pVertexWork->FindVertex(strName);
                        if(pVertex != NULL)
                        {
                                // Add current vertex index to the array
                                pFace->GetVertexArray().push_back(pVertex);
                        }
                        else
                        {
                                cerr << "Error --  K3dFaceBuild::LoadFaces() - Vertex Object " << strName << " doesn`t exist !!!" << endl;
                        }
                }
                // Load color
                pFace->GetColor()->GetR() = (GLubyte)pLua->LuaGetFieldNumber(K_STR_R);
                pFace->GetColor()->GetG() = (GLubyte)pLua->LuaGetFieldNumber(K_STR_G);
                pFace->GetColor()->GetB() = (GLubyte)pLua->LuaGetFieldNumber(K_STR_B);
                pFace->GetColor()->GetA() = (GLubyte)pLua->LuaGetFieldNumber(K_STR_A);
                
                // Calculate face center and normal vector
                pFace->CalcCentre();
                pFace->CalcNormal();
        }
}

void K3dFaceBuild::DeleteFaces()
{
        std::cout << "void K3dFaceBuild::DeleteFaces()" << endl;
        while(m_pGameData->GetFaceObjSP().GetNum())
        {
                K3dFaceObj *p = m_pGameData->GetFaceObjSP().Get(0);
                p = m_pGameData->GetFaceObjSP().Delete(p);
        }
}

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