FIFE 2008.0
cellgrid.h
00001 /***************************************************************************
00002  *   Copyright (C) 2005-2008 by the FIFE team                              *
00003  *   http://www.fifengine.de                                               *
00004  *   This file is part of FIFE.                                            *
00005  *                                                                         *
00006  *   FIFE is free software; you can redistribute it and/or                 *
00007  *   modify it under the terms of the GNU Lesser General Public            *
00008  *   License as published by the Free Software Foundation; either          *
00009  *   version 2.1 of the License, or (at your option) any later version.    *
00010  *                                                                         *
00011  *   This library is distributed in the hope that it will be useful,       *
00012  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00013  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00014  *   Lesser General Public License for more details.                       *
00015  *                                                                         *
00016  *   You should have received a copy of the GNU Lesser General Public      *
00017  *   License along with this library; if not, write to the                 *
00018  *   Free Software Foundation, Inc.,                                       *
00019  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
00020  ***************************************************************************/
00021 
00022 #ifndef FIFE_MODEL_GRIDS_CELLGRID_H
00023 #define FIFE_MODEL_GRIDS_CELLGRID_H
00024 
00025 // Standard C++ library includes
00026 #include <vector>
00027 
00028 // 3rd party library includes
00029 
00030 // FIFE includes
00031 // These includes are split up in two parts, separated by one empty line
00032 // First block: files included from the FIFE root src directory
00033 // Second block: files included from the same folder
00034 #include "model/metamodel/modelcoords.h"
00035 #include "util/math/matrix.h"
00036 #include "util/base/fifeclass.h"
00037 
00038 namespace FIFE {
00039     class CellGrid: public FifeClass {
00040     public:
00044         CellGrid(bool allow_diagonals=false);
00045 
00048         virtual ~CellGrid();
00049 
00055         void getAccessibleCoordinates(const ModelCoordinate& curpos, std::vector<ModelCoordinate>& coordinates);
00056 
00059         virtual const std::string& getType() const = 0;
00060 
00063         virtual const std::string& getName() const = 0;
00064 
00071         virtual bool isAccessible(const ModelCoordinate& curpos, const ModelCoordinate& target) = 0;
00072 
00079         virtual float getAdjacentCost(const ModelCoordinate& curpos, const ModelCoordinate& target) = 0;
00080 
00084         virtual unsigned int getCellSideCount() const = 0;
00085 
00089         ExactModelCoordinate toMapCoordinates(const ModelCoordinate& layer_coords);
00090 
00094         virtual ExactModelCoordinate toMapCoordinates(const ExactModelCoordinate& layer_coords) = 0;
00095         
00099         virtual ModelCoordinate toLayerCoordinates(const ExactModelCoordinate& map_coord) = 0;
00100 
00104         virtual ExactModelCoordinate toExactLayerCoordinates(const ExactModelCoordinate& map_coord) = 0;
00105 
00110         virtual void getVertices(std::vector<ExactModelCoordinate>& vtx, const ModelCoordinate& cell) = 0;
00111 
00115         void setXShift(const double& xshift) { 
00116             m_xshift = xshift; 
00117             updateMatrices();
00118         }
00119 
00123         const double getXShift() const { return m_xshift; }
00124 
00128         void setYShift(const double yshift) {
00129             m_yshift = yshift; 
00130             updateMatrices();
00131         }
00132 
00136         const double getYShift() const { return m_yshift; }
00137 
00141         void setXScale(const double scale) { 
00142             m_xscale = scale;
00143             updateMatrices();
00144         }
00145 
00149         void setYScale(const double scale) { 
00150             m_yscale = scale;
00151             updateMatrices();
00152         }
00153         
00157         const double getXScale() const { return m_xscale; }
00158 
00162         const double getYScale() const { return m_yscale; }
00163         
00167         void setRotation(const double rotation) { 
00168             m_rotation = rotation; 
00169             updateMatrices();
00170         }
00171 
00175         const double getRotation() const { return m_rotation; }
00176 
00179         virtual CellGrid* clone() = 0;
00180 
00181     protected:
00182         void updateMatrices();
00183         bool ptInTriangle(const ExactModelCoordinate& pt, const ExactModelCoordinate& pt1, const ExactModelCoordinate& pt2, const ExactModelCoordinate& pt3);
00184 
00185         DoubleMatrix m_matrix;
00186         DoubleMatrix m_inverse_matrix;
00187         double m_xshift;
00188         double m_yshift;
00189         double m_xscale;
00190         double m_yscale;
00191         double m_rotation;
00192         bool m_allow_diagonals;
00193         
00194     private:
00195         int orientation(const ExactModelCoordinate& pt, const ExactModelCoordinate& pt1, const ExactModelCoordinate& pt2);  
00196     };
00197 }
00198 
00199 #endif
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