template<typename T>
class display_context_proxy
{
private:
    using proxy_ref_t = typename utils::const_clone<display_context, T>::type

    template<typename S>
    using getter_t = typename utils::const_clone<S, proxy_ref_t>::type;

public:
    explicit display_context_proxy(proxy_ref_t& dc) : dc_(dc) {}
    virtual ~display_context_proxy();

    getter_t<std::vector<team>>& teams() const
    {
        return dc_.teams();
    }

    getter_t<gamemap>& map() const
    {
        return dc_.map();
    }

    getter_t<unit_map>& units() const
    {
        return dc_.units();
    }

    getter_t<team>& get_team(int side) const
    {
        return dc_.get_team(side);
    }

private:
    proxy_ref_t& dc_;
};