Patch.h

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/* Copyright (C) 2009 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. 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.
 *
 * 0 A.D. 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 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */
 
/*
 * A patch of terrain holding NxN MiniPatch tiles
 */
 
#ifndef INCLUDED_PATCH
#define INCLUDED_PATCH
 
#include "MiniPatch.h"
#include "RenderableObject.h"
 
class CTerrain;
 
///////////////////////////////////////////////////////////////////////////////
// Terrain Constants:
//
// PATCH_SIZE: number of tiles in each patch
const ssize_t PATCH_SIZE = 16;
 
// Flags for whether the patch should be drawn with a solid plane
// on each side
enum CPatchSideFlags
{
    CPATCH_SIDE_NEGX = (1 << 0),
    CPATCH_SIDE_POSX = (1 << 1),
    CPATCH_SIDE_NEGZ = (1 << 2),
    CPATCH_SIDE_POSZ = (1 << 3),
};
 
///////////////////////////////////////////////////////////////////////////////
// CPatch: a single terrain patch, PATCH_SIZE tiles square
class CPatch : public CRenderableObject
{
public:
    // constructor
    CPatch();
    // destructor
    ~CPatch();
 
    // initialize the patch
    void Initialize(CTerrain* parent,ssize_t x,ssize_t z);
    // calculate and store bounds of this patch
    void CalcBounds();
 
public:
    // minipatches (tiles) making up the patch
    CMiniPatch m_MiniPatches[PATCH_SIZE][PATCH_SIZE];
    // position of patch in parent terrain grid
    int m_X,m_Z;
    // parent terrain
    CTerrain* m_Parent;
 
    int GetSideFlags();
};
 
 
#endif