/*  Starshatter: The Open Source Project
    Copyright (c) 2021-2024, Starshatter: The Open Source Project Contributors
    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
    Copyright (c) 1997-2006, Destroyer Studios LLC.

    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Simulation Object and Observer classes
*/

#pragma once

#include <cstdint>

#include <List.h>

#include "Physical.h"

// +--------------------------------------------------------------------+

class Sim;
class SimRegion;
class SimObject;
class SimObserver;
class Scene;

// +--------------------------------------------------------------------+

class SimObject : public Physical
{
    friend class SimRegion;

public:
    static const char* TYPENAME() { return "SimObject"; }

    enum TYPES {
        SIM_SHIP=100,
        SIM_SHOT,
        SIM_DRONE,
        SIM_EXPLOSION,
        SIM_DEBRIS,
        SIM_ASTEROID
    };

    SimObject()                        :                region(0), objid(0), active(0), notifying(0) { }
    SimObject(const char* n, int t=0)  : Physical(n,t), region(0), objid(0), active(0), notifying(0) { }
    virtual ~SimObject();

    virtual SimRegion*   GetRegion()                const { return region; }
    virtual void         SetRegion(SimRegion* rgn)        { region = rgn;  }

    virtual void         Notify();
    virtual void         Register(SimObserver* obs);
    virtual void         Unregister(SimObserver* obs);

    virtual void         Activate(Scene& scene);
    virtual void         Deactivate(Scene& scene);

    virtual std::uint32_t  GetObjID()                 const { return objid;   }
    virtual void           SetObjID(std::uint32_t id)       { objid = id;     }

    virtual bool         IsHostileTo(const SimObject* o)
    const { return false;   }

protected:
    SimRegion*           region;
    List<SimObserver>    observers;
    std::uint32_t        objid;
    bool                 active;
    bool                 notifying;
};

// +--------------------------------------------------------------------+

class SimObserver
{
public:
    static const char* TYPENAME() { return "SimObserver"; }

    virtual ~SimObserver();

    int operator == (const SimObserver& o) const { return this == &o; }

    virtual bool         Update(SimObject* obj);
    virtual const char*  GetObserverName() const;

    virtual void         Observe(SimObject* obj);
    virtual void         Ignore(SimObject* obj);


protected:
    List<SimObject>      observe_list;
};