/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of HPL1 Engine.
 */

#ifndef HPL_COLLIDE_SHAPE_H
#define HPL_COLLIDE_SHAPE_H

#include "hpl1/engine/math/BoundingVolume.h"
#include "hpl1/engine/math/MathTypes.h"

namespace hpl {

enum eCollideShapeType {
	eCollideShapeType_Null,
	eCollideShapeType_Box,
	eCollideShapeType_Sphere,
	eCollideShapeType_Cylinder,
	eCollideShapeType_Capsule,
	eCollideShapeType_ConvexHull,
	eCollideShapeType_Mesh,
	eCollideShapeType_Compound,
	eCollideShapeType_LastEnum
};

class iPhysicsWorld;

class iCollideShape {
public:
	iCollideShape(iPhysicsWorld *apWorld) : mlUserCount(0), mpWorld(apWorld) {}
	virtual ~iCollideShape() {}

	virtual iCollideShape *GetSubShape(int alIdx) = 0;
	virtual int GetSubShapeNum() = 0;

	cVector3f GetSize() { return mvSize; }

	float GetRadius() { return mvSize.x; }
	float GetHeight() { return mvSize.y; }
	float GetWidth() { return mvSize.x; }
	float GetDepth() { return mvSize.z; }

	const cMatrixf &GetOffset() { return m_mtxOffset; }

	eCollideShapeType GetType() { return mType; }

	void IncUserCount() { mlUserCount++; }
	void DecUserCount() { mlUserCount--; }

	bool HasUsers() { return mlUserCount > 0; }
	int GetUserCount() { return mlUserCount; }

	float GetVolume() { return mfVolume; }

	cBoundingVolume &GetBoundingVolume() { return mBoundingVolume; }

protected:
	cVector3f mvSize;
	eCollideShapeType mType;
	cMatrixf m_mtxOffset;

	int mlUserCount;

	iPhysicsWorld *mpWorld;
	float mfVolume;

	cBoundingVolume mBoundingVolume;
};

} // namespace hpl

#endif // HPL_COLLIDE_SHAPE_H