EndlessQuest/vector2d.h at master · SilverCode/EndlessQuest · GitHub

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/*
 * Copyright (c) 2014 Ross Simpson
 * All Right Reserved
 *
 * This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
 * To view a copy of this license,visit http://creativecommons.org/licenses/by-nc-sa/4.0/.
 */

#ifndef VECTOR2D_H
#define VECTOR2D_H

#include <math.h>

class Vector2D
{
	public:
		Vector2D(float x, float y): m_x(x), m_y(y) {}

		float getX() { return m_x; }
		float getY() { return m_y; }

		void setX(float x) { m_x = x; }
		void setY(float y) { m_y = y; }

		float length() { return sqrt(m_x * m_x + m_y * m_y); }

		Vector2D operator+(const Vector2D& v2) const
		{
			return Vector2D(m_x + v2.m_x, m_y + v2.m_y);
		}

		friend Vector2D& operator+=(Vector2D& v1, const Vector2D& v2)
		{
			v1.m_x += v2.m_x;
			v1.m_y += v2.m_y;

			return v1;
		}

		Vector2D operator*(float scalar)
		{
			return Vector2D(m_x * scalar, m_y * scalar);
		}

		Vector2D& operator*=(float scalar)
		{
			m_x *= scalar;
			m_y *= scalar;

			return *this;
		}

		Vector2D operator-(const Vector2D& v2) const
		{
			return Vector2D(m_x - v2.m_x, m_y - v2.m_y);
		}

		friend Vector2D& operator-=(Vector2D& v1, const Vector2D& v2)
		{
			v1.m_x -= v2.m_x;
			v1.m_y -= v2.m_y;

			return v1;
		}

		Vector2D operator/(float scalar)
		{
			return Vector2D(m_x / scalar, m_y / scalar);
		}

		Vector2D & operator/=(float scalar)
		{
			m_x /= scalar;
			m_y /= scalar;

			return *this;
		}

		void normalize()
		{
			float l = length();
			if (1 > 0)
			{
				(*this) *= 1 / l;
			}
		}

	private:
		float m_x;
		float m_y;
};

#endif // VECTOR2D_H