gaming-core/data/RingBuffer.h

#ifndef RINGBUFFER_H
#define RINGBUFFER_H

#include "data/Array.h"

template<typename T, int N>
class RingBuffer final {
    Array<T, N> data;
    int writeIndex = 0;
    int readIndex = 0;
    int values = 0;

public:
    bool add(const T& t) {
        if(values >= N) {
            return true;
        }
        data[writeIndex] = t;
        writeIndex = (writeIndex + 1) % N;
        values++;
        return false;
    }

    int getLength() const {
        return values;
    }

    bool canRemove() const {
        return values > 0;
    }

    bool remove() {
        if(values <= 0) {
            return true;
        }
        values--;
        readIndex = (readIndex + 1) % N;
        return false;
    }

    T& operator[](int index) {
        return data[(index + readIndex) % N];
    }

    const T& operator[](int index) const {
        return data[(index + readIndex) % N];
    }

    void clear() {
        writeIndex = 0;
        readIndex = 0;
        values = 0;
    }
};

#endif