#ifndef MOVINGAVG_H
#define MOVINGAVG_H

#include <vector>

template <typename T> class MovingAVG {

private:

	/** up to "size" elements */
	std::vector<T> values;

	/** track the current sum of the vector's values */
	T curSum = 0;

	/** the number of elements to average */
	int size;

public:

	/** ctor */
	MovingAVG(const int size) : size(size) {;}

	/** add a new value */
	void add(const T val) {

		// add new value
		values.push_back(val);
		curSum += val;

		// too many values?
		if ((int) values.size() > size) {
			curSum -= values.front();
			values.erase(values.begin());
		}

	}

	/** get the current average */
	T get() const {
		return curSum / values.size();
	}


	/** get the number of used entries */
	int getNumUsed() const {
		return (int) values.size();
	}

	/** get number of entries to average */
	int getSize() const {
		return size;
	}


};

#endif // MOVINGAVG_H