NavLights.h

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// Copyright © 2008-2021 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#ifndef _NAVLIGHTS_H
#define _NAVLIGHTS_H
/*
 * Blinking navigation lights for ships and stations
 */
#include "JsonFwd.h"
#include "graphics/VertexArray.h"
#include "graphics/VertexBuffer.h"
 
namespace Graphics {
    class Renderer;
    class RenderState;
} // namespace Graphics
namespace SceneGraph {
    class Model;
    class Billboard;
} // namespace SceneGraph
 
class NavLights {
public:
    enum LightColor {
        NAVLIGHT_RED = 0,
        NAVLIGHT_GREEN = 1,
        NAVLIGHT_BLUE = 2,
        NAVLIGHT_YELLOW = 3,
        NAVLIGHT_OFF = 15
    };
 
    struct LightBulb {
        LightBulb(Uint8 group, Uint8 mask, Uint8 color, SceneGraph::Billboard *bb);
        Uint8 group;
        Uint8 mask; //bitmask: 00001111 light on half the period, 11111111 light on the entire period etc...
        Uint8 color;
        SceneGraph::Billboard *billboard;
    };
 
    NavLights(SceneGraph::Model *, float period = 2.f);
    virtual ~NavLights();
    virtual void SaveToJson(Json &jsonObj);
    virtual void LoadFromJson(const Json &jsonObj);
 
    void SetEnabled(bool on) { m_enabled = on; }
    void Update(float time);
    void Render(Graphics::Renderer *renderer);
    void SetColor(unsigned int group, LightColor);
    void SetMask(unsigned int group, uint8_t mask);
 
    static void Init(Graphics::Renderer *);
    static void Uninit();
 
protected:
    std::map<Uint32, std::vector<LightBulb>> m_groupLights;
    float m_time;
    float m_period;
    bool m_enabled;
 
    Graphics::VertexArray m_billboardTris;
    RefCountedPtr<Graphics::VertexBuffer> m_billboardVB;
    Graphics::RenderState *m_billboardRS;
};
 
#endif