/* 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/>.
 *
 */

#ifndef GAMOS_ARRAY2D_H
#define GAMOS_ARRAY2D_H

#include "common/array.h"
#include "common/rect.h"

template <class T>
class Array2D : protected Common::Array<T> {
private:
	typedef Common::Array<T> __base;
public:
	typedef uint16 size_type; /*!< Size type of the array. */

	using Common::Array<T>::data;
	using Common::Array<T>::operator[];
	using Common::Array<T>::size;
	using Common::Array<T>::begin;
	using Common::Array<T>::end;
	using Common::Array<T>::empty;

public:


	Array2D() = default;
	Array2D(Array2D &&) = default;
	Array2D(const Array2D &) = default;

	Array2D &operator=(const Array2D &) = default;
	Array2D &operator=(Array2D &&) = default;

	Array2D(size_type w, size_type h) {
		resize(w, h);
	}

	Array2D(const Common::Point &sz) {
		resize(sz);
	}

	Array2D<T> *copy() {
		Array2D<T> *tmp = new Array2D<T>;
		*tmp = *this;
		return tmp;
	}

	void resize(const Common::Point &sz) {
		_w = sz.x;
		_h = sz.y;

		__base::resize(_w * _h);
	}

	void resize(size_type w, size_type h) {
		_w = w;
		_h = h;

		__base::resize(_w * _h);
	}

	T &at(size_type x, size_type y) {
		return __base::operator[](x + y * _w);
	}

	T &at(const Common::Point &p) {
		return __base::operator[](p.x + p.y * _w);
	}

	T &at(size_type n) {
		return __base::operator[](n);
	}

	T &operator()(size_type x, size_type y) {
		return at(x + y * _w);
	}

	T &operator()(const Common::Point &p) {
		return at(p.x + p.y * _w);
	}

	T *getLinePtr(size_type y) {
		return &(at(y * _w));
	}

	const T *getLinePtr(size_type y) const {
		return &(at(y * _w));
	}

	Common::Point sizes() const {
		return Common::Point(_w, _h);
	}

	size_type getIndex(size_type x, size_type y) const {
		size_t n = x + y * _w;
		if (n < size())
			return n;
		return -1;
	}

	Common::Point indexToCoords(size_type id) const {
		if (id >= 0 && id < size())
			return Common::Point(id % _w, id / _w);
		return Common::Point(-1, -1);
	}

	size_type width() const {
		return _w;
	}

	size_type height() const {
		return _h;
	}

	void clear() {
		_w = 0;
		_h = 0;
		Common::Array<T>::clear();
	}

	bool isNotNull() const {
		return _w > 0 && _h > 0;
	}

	bool isNull() const {
		return _w == 0 || _h == 0;
	}

	bool isOk() const {
		return _w > 0 && _h > 0 && (size() == _w * _h);
	}

protected:
	size_type _w = 0;
	size_type _h = 0;
};


#endif