modelmgr.hxx

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// model-mgr.hxx - manage user-specified 3D models.
// Written by David Megginson, started 2002.
//
// This file is in the Public Domain, and comes with no warranty.
 
#ifndef __MODELMGR_HXX
#define __MODELMGR_HXX 1
 
#include <vector>
#include <memory>
 
#include <simgear/compiler.h>    // for SG_USING_STD
#include <simgear/structure/subsystem_mgr.hxx>
 
#include <Scripting/NasalModelData.hxx>
 
// Don't pull in headers, since we don't need them here.
class SGPropertyNode;
class SGModelPlacement;
 

class FGModelMgr : public SGSubsystem
{
public:

    struct Instance
    {
        virtual ~Instance ();
        SGModelPlacement * model = nullptr;
        SGPropertyNode_ptr node;
        SGPropertyNode_ptr lon_deg_node;
        SGPropertyNode_ptr lat_deg_node;
        SGPropertyNode_ptr elev_ft_node;
        SGPropertyNode_ptr roll_deg_node;
        SGPropertyNode_ptr pitch_deg_node;
        SGPropertyNode_ptr heading_deg_node;
        SGPropertyNode_ptr loaded_node;
        bool shadow = false;
 
        bool checkLoaded() const;
    };
 
    FGModelMgr ();
    virtual ~FGModelMgr ();
 
    // Subsystem API.
    void bind() override;
    void init() override;
    void shutdown() override;
    void unbind() override;
    void update(double dt) override;
 
    // Subsystem identification.
    static const char* staticSubsystemClassId() { return "model-manager"; }
 
    virtual void add_model (SGPropertyNode * node);

    virtual void add_instance (Instance * instance);
 

    virtual void remove_instance (Instance * instance);
 

    Instance* findInstanceByNodePath(const std::string& nodePath) const;
 
private:
    class Listener : public SGPropertyChangeListener
    {
    public:
        Listener(FGModelMgr *mgr) : _mgr(mgr) {}
        virtual void childAdded (SGPropertyNode * parent, SGPropertyNode * child);
        virtual void childRemoved (SGPropertyNode * parent, SGPropertyNode * child);
 
    private:
        FGModelMgr * _mgr;
    };
 
    SGPropertyNode_ptr _models;
    std::unique_ptr<Listener> _listener;
 
    std::vector<Instance *> _instances;
};
 
#endif // __MODELMGR_HXX