Nav.h

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// Nav.h
//
// Copyright (c) 2015 Michael Imamura.
//
// Licensed under GrokkSoft HoverRace SourceCode License v1.0(the "License");
// you may not use this file except in compliance with the License.
//
// A copy of the license should have been attached to the package from which
// you have taken this file. If you can not find the license you can not use
// this file.
//
//
// The author makes no representations about the suitability of
// this software for any purpose.  It is provided "as is" "AS IS",
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied.
//
// See the License for the specific language governing permissions
// and limitations under the License.

#pragma once

#if defined(_WIN32) && defined(HR_ENGINE_SHARED)
#   ifdef MR_ENGINE
#       define MR_DllDeclare   __declspec( dllexport )
#   else
#       define MR_DllDeclare   __declspec( dllimport )
#   endif
#else
#   define MR_DllDeclare
#endif

namespace HoverRace {
namespace Control {

class MR_DllDeclare Nav
{
public:
    enum dir_t { NEUTRAL, UP, DOWN, LEFT, RIGHT, NEXT, PREV };

public:
    constexpr Nav(dir_t dir = NEUTRAL) noexcept : dir(dir) { }
    constexpr Nav(const Nav&) noexcept = default;
    constexpr Nav(Nav&&) noexcept = default;

    Nav &operator=(const Nav&) noexcept = default;
    Nav &operator=(Nav&&) noexcept = default;

public:
    constexpr dir_t AsDigital() const noexcept { return dir; }

private:
    dir_t dir;
};

inline std::ostream &operator<<(std::ostream &os, const Nav &nav)
{
    switch (nav.AsDigital()) {
        case Nav::NEUTRAL: os << "NEUTRAL"; break;
        case Nav::UP: os << "UP"; break;
        case Nav::DOWN: os << "DOWN"; break;
        case Nav::LEFT: os << "LEFT"; break;
        case Nav::RIGHT: os << "RIGHT"; break;
        case Nav::NEXT: os << "NEXT"; break;
        case Nav::PREV: os << "PREV"; break;
        default: os << "Unknown(" << nav.AsDigital() << ")";
    }
    return os;
}

} // namespace Control
} // namespace HoverRace

#undef MR_DllDeclare