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/* Copyright (C) 2010 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/>.
*/
#ifndef INCLUDED_ICMPTERRAIN
#define INCLUDED_ICMPTERRAIN
#include "simulation2/system/Interface.h"
#include "simulation2/helpers/Position.h"
#include "maths/FixedVector3D.h"
class CTerrain;
class ICmpTerrain : public IComponent
{
public:
virtual bool IsLoaded() = 0;
virtual CFixedVector3D CalcNormal(entity_pos_t x, entity_pos_t z) = 0;
virtual entity_pos_t GetGroundLevel(entity_pos_t x, entity_pos_t z) = 0;
virtual float GetExactGroundLevel(float x, float z) = 0;
/**
* Returns number of tiles per side on the terrain.
* Return value is always non-zero.
*/
virtual u16 GetTilesPerSide() = 0;
/**
* Returns number of vertices per side on the terrain.
* Return value is always non-zero.
*/
virtual u16 GetVerticesPerSide() = 0;
virtual CTerrain* GetCTerrain() = 0;
/**
* Call when the underlying CTerrain has been modified behind our backs.
* (TODO: eventually we should manage the CTerrain in this class so nobody
* can modify it behind our backs).
*/
virtual void ReloadTerrain() = 0;
/**
* Indicate that terrain tiles within the given region (inclusive lower bound,
* exclusive upper bound) have been changed. CMessageTerrainChanged will be
* sent to any components that care about terrain changes.
*/
virtual void MakeDirty(i32 i0, i32 j0, i32 i1, i32 j1) = 0;
DECLARE_INTERFACE_TYPE(Terrain)
};
#endif // INCLUDED_ICMPTERRAIN
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