Sfx.h

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// Copyright © 2008-2023 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#ifndef _SFX_H
#define _SFX_H
 
#include "FrameId.h"
#include "JsonFwd.h"
#include "graphics/Material.h"
 
#include <deque>
 
class Body;
class Frame;
 
namespace Graphics {
    class Renderer;
} // namespace Graphics
 
enum SFX_TYPE {
    TYPE_EXPLOSION = 1,
    TYPE_DAMAGE,
    TYPE_SMOKE,
    TYPE_NONE
};
 
struct Sfx {
    Sfx() = delete;
    Sfx(const vector3d &pos, const vector3d &vel, const float speed, const SFX_TYPE type);
    Sfx(const Json &jsonObj);
 
    const vector3d &GetPosition() const { return m_pos; }
 
    float AgeBlend() const;
    void SetPosition(const vector3d &p);
 
    void TimeStepUpdate(const float timeStep);
    void SaveToJson(Json &jsonObj);
 
    vector3d m_pos;
    vector3d m_vel;
    float m_age;
    float m_speed;
    enum SFX_TYPE m_type;
};
 
class SfxManager {
public:
    friend struct Sfx;
 
    static void Add(const Body *, SFX_TYPE);
    static void AddExplosion(Body *);
    static void AddThrustSmoke(const Body *b, float speed, const vector3d &adjustpos);
    static void TimeStepAll(const float timeStep, FrameId f);
    static void RenderAll(Graphics::Renderer *r, FrameId f, const FrameId camFrame);
    static void ToJson(Json &jsonObj, const FrameId f);
    static void FromJson(const Json &jsonObj, FrameId f);
 
    //create shared models
    static void Init(Graphics::Renderer *r);
    static void Uninit();
    static std::unique_ptr<Graphics::Material> damageParticle;
    static std::unique_ptr<Graphics::Material> ecmParticle;
    static std::unique_ptr<Graphics::Material> smokeParticle;
    static std::unique_ptr<Graphics::Material> explosionParticle;
 
    SfxManager();
 
    size_t GetNumberInstances(const SFX_TYPE t) const { return m_instances[t].size(); }
    void Cleanup();
 
private:
    // types
    struct MaterialData {
        MaterialData() :
            effect(Graphics::EFFECT_BILLBOARD),
            num_textures(1),
            num_imgs_wide(1),
            coord_downscale(1.0f) {}
        Graphics::EffectType effect;
        Uint32 num_textures;
        int num_imgs_wide;
        float coord_downscale;
    };
 
    Sfx &GetInstanceByIndex(const SFX_TYPE t, const size_t i) { return m_instances[t][i]; }
    void AddInstance(Sfx &inst) { return m_instances[inst.m_type].push_back(inst); }
 
    // methods
    static SfxManager *AllocSfxInFrame(FrameId f);
    static vector2f CalculateOffset(const enum SFX_TYPE, const Sfx &);
    static bool SplitMaterialData(const std::string &spec, MaterialData &output);
 
    // static members
    static MaterialData m_materialData[TYPE_NONE];
 
    // members
    // per-frame
    std::deque<Sfx> m_instances[TYPE_NONE];
};
 
#endif /* _SFX_H */