Pool.h

#ifndef POOL_HEADER
#define POOL_HEADER

#include "GlobalHeader.h"

template<typename T> class Pool {
public:
    // The size of the pool.
    int size;
    // Data container.
    std::vector<T> data;

    // Constructor.
    Pool(int sz = 0) : size(sz) { data = std::vector<T>(sz); }

    // Overload the operator.
    T &operator[](uint index) {
        return data[index];
    }

    const T &operator[](uint index) const {
        return data[index];
    }

    void Push(const T &t) {
        if (size == data.size())
            data.push_back(t);
        else
            data[size] = t;
        size++;
    }

    // Reset the pool;
    void clear() {
        size = 0;
    }

    void Resize(int sz) {
        if (sz > size) {
            data.resize(sz);
        }
        size = sz;
    }
};

#endif