object.h

/*************************************************************************/
/*  object.h                                                             */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/
#ifndef OBJECT_H
#define OBJECT_H

#include "list.h"
#include "variant.h"
#include "set.h"
#include "map.h"
#include "vmap.h"

#define VARIANT_ARG_LIST const Variant& p_arg1=Variant(),const Variant& p_arg2=Variant(),const Variant& p_arg3=Variant(),const Variant& p_arg4=Variant(),const Variant& p_arg5=Variant()
#define VARIANT_ARG_PASS p_arg1,p_arg2,p_arg3,p_arg4,p_arg5
#define VARIANT_ARG_DECLARE const Variant& p_arg1,const Variant& p_arg2,const Variant& p_arg3,const Variant& p_arg4,const Variant& p_arg5
#define VARIANT_ARG_MAX 5
#define VARIANT_ARGPTRS const Variant *argptr[5]={&p_arg1,&p_arg2,&p_arg3,&p_arg4,&p_arg5};
#define VARIANT_ARGPTRS_PASS *argptr[0],*argptr[1],*argptr[2],*argptr[3],*argptr[4]
#define VARIANT_ARGS_FROM_ARRAY(m_arr) m_arr[0],m_arr[1],m_arr[2],m_arr[3],m_arr[4]

enum PropertyHint {
    PROPERTY_HINT_NONE, 
    PROPERTY_HINT_RANGE, 
    PROPERTY_HINT_EXP_RANGE, 
    PROPERTY_HINT_ENUM, 
    PROPERTY_HINT_EXP_EASING, 
    PROPERTY_HINT_LENGTH, 
    PROPERTY_HINT_SPRITE_FRAME,
    PROPERTY_HINT_KEY_ACCEL, 
    PROPERTY_HINT_FLAGS, 
    PROPERTY_HINT_ALL_FLAGS,
    PROPERTY_HINT_FILE, 
    PROPERTY_HINT_DIR, 
    PROPERTY_HINT_GLOBAL_FILE, 
    PROPERTY_HINT_GLOBAL_DIR, 
    PROPERTY_HINT_RESOURCE_TYPE, 
    PROPERTY_HINT_MULTILINE_TEXT, 
    PROPERTY_HINT_COLOR_NO_ALPHA, 
    PROPERTY_HINT_IMAGE_COMPRESS_LOSSY,
    PROPERTY_HINT_IMAGE_COMPRESS_LOSSLESS,
    PROPERTY_HINT_MAX,
};

enum PropertyUsageFlags {

    PROPERTY_USAGE_STORAGE=1,
    PROPERTY_USAGE_EDITOR=2,
    PROPERTY_USAGE_NETWORK=4,
    PROPERTY_USAGE_EDITOR_HELPER=8,
    PROPERTY_USAGE_CHECKABLE=16, //used for editing global variables
    PROPERTY_USAGE_CHECKED=32, //used for editing global variables
    PROPERTY_USAGE_INTERNATIONALIZED=64, //hint for internationalized strings
    PROPERTY_USAGE_BUNDLE=128, //used for optimized bundles
    PROPERTY_USAGE_CATEGORY=256,
    PROPERTY_USAGE_STORE_IF_NONZERO=512, //only store if nonzero
    PROPERTY_USAGE_STORE_IF_NONONE=1024, //only store if false
    PROPERTY_USAGE_NO_INSTANCE_STATE=2048,

    PROPERTY_USAGE_DEFAULT=PROPERTY_USAGE_STORAGE|PROPERTY_USAGE_EDITOR|PROPERTY_USAGE_NETWORK,
    PROPERTY_USAGE_DEFAULT_INTL=PROPERTY_USAGE_STORAGE|PROPERTY_USAGE_EDITOR|PROPERTY_USAGE_NETWORK|PROPERTY_USAGE_INTERNATIONALIZED,
    PROPERTY_USAGE_NOEDITOR=PROPERTY_USAGE_STORAGE|PROPERTY_USAGE_NETWORK,
};




#define ADD_SIGNAL( m_signal ) ObjectTypeDB::add_signal( get_type_static(), m_signal )
#define ADD_PROPERTY( m_property, m_setter, m_getter ) ObjectTypeDB::add_property( get_type_static(), m_property, m_setter, m_getter )
#define ADD_PROPERTYI( m_property, m_setter, m_getter, m_index ) ObjectTypeDB::add_property( get_type_static(), m_property, m_setter, m_getter, m_index )
#define ADD_PROPERTYNZ( m_property, m_setter, m_getter ) ObjectTypeDB::add_property( get_type_static(), (m_property).added_usage(PROPERTY_USAGE_STORE_IF_NONZERO), m_setter, m_getter )
#define ADD_PROPERTYINZ( m_property, m_setter, m_getter, m_index ) ObjectTypeDB::add_property( get_type_static(), (m_property).added_usage(PROPERTY_USAGE_STORE_IF_NONZERO), m_setter, m_getter, m_index )
#define ADD_PROPERTYNO( m_property, m_setter, m_getter ) ObjectTypeDB::add_property( get_type_static(), (m_property).added_usage(PROPERTY_USAGE_STORE_IF_NONONE), m_setter, m_getter )
#define ADD_PROPERTYINO( m_property, m_setter, m_getter, m_index ) ObjectTypeDB::add_property( get_type_static(), (m_property).added_usage(PROPERTY_USAGE_STORE_IF_NONONE), m_setter, m_getter, m_index )

struct PropertyInfo {

    Variant::Type type;
    String name;
    PropertyHint hint;
    String hint_string;
    uint32_t usage;

    _FORCE_INLINE_ PropertyInfo added_usage(int p_fl) const { PropertyInfo pi=*this; pi.usage|=p_fl; return pi; }

    PropertyInfo() { type=Variant::NIL; hint=PROPERTY_HINT_NONE; usage = PROPERTY_USAGE_DEFAULT; }
    PropertyInfo( Variant::Type p_type, const String p_name, PropertyHint p_hint=PROPERTY_HINT_NONE, const String& p_hint_string="",uint32_t p_usage=PROPERTY_USAGE_DEFAULT) {
        type=p_type; name=p_name; hint=p_hint; hint_string=p_hint_string; usage=p_usage;
    }
    bool operator<(const PropertyInfo& p_info) const {
        return name<p_info.name;
    }
};



Array convert_property_list(const List<PropertyInfo> * p_list);

struct MethodInfo {

    String name;
    List<PropertyInfo> arguments;
    Vector<Variant> default_arguments;
    PropertyInfo return_val;
    uint32_t flags;
    int id;

    inline bool  operator<(const MethodInfo& p_method) const { return id==p_method.id?(name < p_method.name):(id<p_method.id); }

    MethodInfo();
    MethodInfo(const String& p_name);
    MethodInfo(const String& p_name, const PropertyInfo& p_param1);
    MethodInfo(const String& p_name, const PropertyInfo& p_param1,const PropertyInfo& p_param2);
    MethodInfo(const String& p_name, const PropertyInfo& p_param1,const PropertyInfo& p_param2,const PropertyInfo& p_param3);
    MethodInfo(const String& p_name, const PropertyInfo& p_param1,const PropertyInfo& p_param2,const PropertyInfo& p_param3,const PropertyInfo& p_param4);
    MethodInfo(const String& p_name, const PropertyInfo& p_param1,const PropertyInfo& p_param2,const PropertyInfo& p_param3,const PropertyInfo& p_param4,const PropertyInfo& p_param5);
    MethodInfo(Variant::Type ret);
    MethodInfo(Variant::Type ret,const String& p_name);
    MethodInfo(Variant::Type ret,const String& p_name, const PropertyInfo& p_param1);
    MethodInfo(Variant::Type ret,const String& p_name, const PropertyInfo& p_param1,const PropertyInfo& p_param2);
    MethodInfo(Variant::Type ret,const String& p_name, const PropertyInfo& p_param1,const PropertyInfo& p_param2,const PropertyInfo& p_param3);
    MethodInfo(Variant::Type ret,const String& p_name, const PropertyInfo& p_param1,const PropertyInfo& p_param2,const PropertyInfo& p_param3,const PropertyInfo& p_param4);
    MethodInfo(Variant::Type ret,const String& p_name, const PropertyInfo& p_param1,const PropertyInfo& p_param2,const PropertyInfo& p_param3,const PropertyInfo& p_param4,const PropertyInfo& p_param5);
};

// old cast_to
//if ( is_type(T::get_type_static()) )
//return static_cast<T*>(this);
//return NULL;

/*
   the following is an uncomprehensible blob of hacks and workarounds to compensate for many of the fallencies in C++. As a plus, this macro pretty much alone defines the object model.
*/

#define REVERSE_GET_PROPERTY_LIST \
public:\
_FORCE_INLINE_ bool _is_gpl_reversed() const { return true; };\
private:

#define UNREVERSE_GET_PROPERTY_LIST \
public:\
_FORCE_INLINE_ bool _is_gpl_reversed() const { return false; };\
private:



#define OBJ_TYPE( m_type, m_inherits )\
private:\
    void operator=(const m_type& p_rval) {}\
    mutable StringName _type_name;\
    friend class ObjectTypeDB;\
public:\
virtual String get_type() const { \
    return String(#m_type);\
}\
virtual const StringName* _get_type_namev() const { \
    if (!_type_name)\
        _type_name=get_type_static();\
    return &_type_name;\
}\
static _FORCE_INLINE_ void* get_type_ptr_static() { \
    static int ptr;\
    return &ptr;\
}\
static _FORCE_INLINE_ String get_type_static() { \
    return String(#m_type);\
}\
static _FORCE_INLINE_ String get_parent_type_static() { \
    return m_inherits::get_type_static();\
}\
static void get_inheritance_list_static(List<String>* p_inheritance_list) { \
    m_inherits::get_inheritance_list_static(p_inheritance_list);\
    p_inheritance_list->push_back(String(#m_type));\
}\
static String get_category_static() { \
    String category = m_inherits::get_category_static();\
    if (_get_category!=m_inherits::_get_category) {\
        if (category!="")\
            category+="/";\
        category+=_get_category();\
    }\
    return category;\
}\
static String inherits_static() {\
    return String(#m_inherits);\
}\
virtual bool is_type(const String& p_type) const { return (p_type==(#m_type))?true:m_inherits::is_type(p_type); }\
virtual bool is_type_ptr(void *p_ptr) const { return (p_ptr==get_type_ptr_static())?true:m_inherits::is_type_ptr(p_ptr); }\
\
\
static void get_valid_parents_static(List<String> *p_parents) {\
\
    if (m_type::_get_valid_parents_static!=m_inherits::_get_valid_parents_static) { \
        m_type::_get_valid_parents_static(p_parents);\
    }\
\
    m_inherits::get_valid_parents_static(p_parents);\
}\
protected:\
_FORCE_INLINE_ static void (*_get_bind_methods())() {\
    return &m_type::_bind_methods;\
}\
public:\
static void initialize_type() {\
    static bool initialized=false;\
    if (initialized)\
        return;\
    m_inherits::initialize_type();\
    ObjectTypeDB::_add_type<m_type>();\
    if (m_type::_get_bind_methods() != m_inherits::_get_bind_methods())\
        _bind_methods();\
    initialized=true;\
}\
protected:\
virtual void _initialize_typev() {\
    initialize_type();\
}\
_FORCE_INLINE_ bool (Object::* (_get_get() const))(const StringName& p_name,Variant&) const {\
    return (bool (Object::*)(const StringName&,Variant&)const) &m_type::_get;\
}\
virtual bool _getv(const StringName& p_name, Variant& r_ret) const { \
    if (m_type::_get_get() != m_inherits::_get_get()) {\
        if (_get(p_name,r_ret))\
            return true;\
    }\
    return m_inherits::_getv(p_name,r_ret);\
}\
_FORCE_INLINE_ bool (Object::* (_get_set() const))(const StringName& p_name,const Variant &p_property) {\
    return (bool (Object::*)(const StringName&, const Variant&))&m_type::_set;\
}\
virtual bool _setv(const StringName& p_name,const Variant &p_property) { \
    if (m_inherits::_setv(p_name,p_property)) return true;\
    if (m_type::_get_set() != m_inherits::_get_set()) {\
        return _set(p_name,p_property);\
        \
    }\
    return false;\
}\
_FORCE_INLINE_ void (Object::* (_get_get_property_list() const))(List<PropertyInfo> *p_list) const{\
    return (void (Object::*)(List<PropertyInfo>*)const)&m_type::_get_property_list;\
}\
virtual void _get_property_listv(List<PropertyInfo> *p_list,bool p_reversed) const { \
    if (!p_reversed) {\
        m_inherits::_get_property_listv(p_list,p_reversed);\
    }\
    p_list->push_back( PropertyInfo(Variant::NIL,get_type_static(),PROPERTY_HINT_NONE,String(),PROPERTY_USAGE_CATEGORY));\
    if (!_is_gpl_reversed())\
        ObjectTypeDB::get_property_list(#m_type,p_list,true);\
    if (m_type::_get_get_property_list() != m_inherits::_get_get_property_list()) {\
        _get_property_list(p_list);\
    }\
    if (_is_gpl_reversed())\
        ObjectTypeDB::get_property_list(#m_type,p_list,true);\
    if (p_reversed) {\
        m_inherits::_get_property_listv(p_list,p_reversed);\
    }\
\
}\
_FORCE_INLINE_ void (Object::* (_get_notification() const))(int){\
    return (void (Object::*)(int)) &m_type::_notification;\
}\
virtual void _notificationv(int p_notification,bool p_reversed) { \
    if (!p_reversed) \
        m_inherits::_notificationv(p_notification,p_reversed);\
    if (m_type::_get_notification() != m_inherits::_get_notification()) {\
        _notification(p_notification);\
    }\
    if (p_reversed)\
        m_inherits::_notificationv(p_notification,p_reversed);\
}\
\
private:


#define OBJ_CATEGORY(m_category)\
protected:\
_FORCE_INLINE_ static String _get_category() { return m_category; }\
private:

#define OBJ_SAVE_TYPE(m_type) \
public: \
virtual String get_save_type() const { return #m_type; }\
private:

class ScriptInstance;
typedef uint32_t ObjectID;

class Object {
public:

    enum ConnectFlags {

        CONNECT_DEFERRED=1,
        CONNECT_PERSIST=2, // hint for scene to save this connection
        CONNECT_ONESHOT=4
    };

    struct Connection {

        Object *source;
        StringName signal;
        Object *target;
        StringName method;
        uint32_t flags;
        Vector<Variant> binds;
        bool operator<(const Connection& p_conn) const;

        operator Variant() const;
        Connection() { source=NULL; target=NULL; flags=0; }
        Connection(const Variant& p_variant);
    };
private:
#ifdef DEBUG_ENABLED
friend class _ObjectDebugLock;
#endif
friend bool predelete_handler(Object*);
friend void postinitialize_handler(Object*);


    struct Signal {

        struct Target {

            ObjectID _id;
            StringName method;

            _FORCE_INLINE_ bool operator<(const Target& p_target) const { return (_id==p_target._id)?(method<p_target.method):(_id<p_target._id); }

            Target(const ObjectID& p_id, const StringName& p_method) { _id=p_id; method=p_method; }
            Target() { _id=0; }
        };

        struct Slot {

            Connection conn;
            List<Connection>::Element *cE;
        };

        MethodInfo user;
        VMap<Target,Slot> slot_map;
        int lock;
        Signal() { lock=0; }

    };


    HashMap< StringName, Signal, StringNameHasher> signal_map;
    List<Connection> connections;
#ifdef DEBUG_ENABLED
    SafeRefCount _lock_index;
#endif
    bool _block_signals;
    int _predelete_ok;
    Set<Object*> change_receptors;
    uint32_t _instance_ID;
    bool _predelete();
    void _postinitialize();
    bool _can_translate;
#ifdef TOOLS_ENABLED
    bool _edited;
#endif
    ScriptInstance *script_instance;
    RefPtr script;
    Dictionary metadata;
    mutable StringName _type_name;
    mutable const StringName* _type_ptr;

    void _add_user_signal(const String& p_name, const Array& p_pargs=Array());
    bool _has_user_signal(const StringName& p_name) const;
    Variant _emit_signal(const Variant** p_args, int p_argcount, Variant::CallError& r_error);
    Array _get_signal_list() const;
    Array _get_signal_connection_list(const String& p_signal) const;
    void _set_bind(const String& p_set,const Variant& p_value);
    Variant _get_bind(const String& p_name) const;

    void property_list_changed_notify();

protected:

    virtual bool _use_builtin_script() const { return false; }
    virtual void _initialize_typev() { initialize_type(); }
    virtual bool _setv(const StringName& p_name,const Variant &p_property) { return false; };
    virtual bool _getv(const StringName& p_name,Variant &r_property) const { return false; };
    virtual void _get_property_listv(List<PropertyInfo> *p_list,bool p_reversed) const {};
    virtual void _notificationv(int p_notification,bool p_reversed) {};

    static String _get_category() { return ""; }
    static void _bind_methods();
    bool _set(const StringName& p_name,const Variant &p_property) { return false; };
    bool _get(const StringName& p_name,Variant &r_property) const { return false;  };
    void _get_property_list(List<PropertyInfo> *p_list) const {};
    void _notification(int p_notification) {};

    _FORCE_INLINE_ static void (*_get_bind_methods())() {
        return &Object::_bind_methods;
    }
    _FORCE_INLINE_ bool (Object::* (_get_get() const))(const StringName& p_name,Variant &r_ret) const {
        return &Object::_get;
    }
    _FORCE_INLINE_ bool (Object::* (_get_set() const))(const StringName& p_name,const Variant &p_property) {
            return &Object::_set;
    }
    _FORCE_INLINE_ void (Object::* (_get_get_property_list() const))(List<PropertyInfo> *p_list) const{
            return &Object::_get_property_list;
    }
    _FORCE_INLINE_ void (Object::* (_get_notification() const))(int){
            return &Object::_notification;
    }
    static void get_valid_parents_static(List<String> *p_parents);
    static void _get_valid_parents_static(List<String> *p_parents);


    void cancel_delete();

    virtual void _changed_callback(Object *p_changed,const char *p_prop);

    //Variant _call_bind(const StringName& p_name, const Variant& p_arg1 = Variant(), const Variant& p_arg2 = Variant(), const Variant& p_arg3 = Variant(), const Variant& p_arg4 = Variant());
    //void _call_deferred_bind(const StringName& p_name, const Variant& p_arg1 = Variant(), const Variant& p_arg2 = Variant(), const Variant& p_arg3 = Variant(), const Variant& p_arg4 = Variant());

    Variant _call_bind(const Variant** p_args, int p_argcount, Variant::CallError& r_error);
    Variant _call_deferred_bind(const Variant** p_args, int p_argcount, Variant::CallError& r_error);


    virtual const StringName* _get_type_namev() const {
        if (!_type_name)
            _type_name=get_type_static();
        return &_type_name;
    }

    DVector<String> _get_meta_list_bind() const;
    Array _get_property_list_bind() const;
    Array _get_method_list_bind() const;

    void _clear_internal_resource_paths(const Variant &p_var);

public: //should be protected, but bug in clang++
    static void initialize_type();
    _FORCE_INLINE_ static void register_custom_data_to_otdb() {};

public:

#ifdef TOOLS_ENABLED
    _FORCE_INLINE_ void _change_notify(const char *p_property="") { _edited=true; for(Set<Object*>::Element *E=change_receptors.front();E;E=E->next()) ((Object*)(E->get()))->_changed_callback(this,p_property); }
#else
    _FORCE_INLINE_ void _change_notify(const char *p_what="") {  }
#endif
    static void* get_type_ptr_static() {
        static int ptr;
        return &ptr;
    }

    bool _is_gpl_reversed() const { return false; }

    _FORCE_INLINE_ ObjectID get_instance_ID() const { return _instance_ID; }
    // this is used for editors

    void add_change_receptor( Object *p_receptor );
    void remove_change_receptor( Object *p_receptor );

    template<class T>
    T *cast_to() {

#ifndef NO_SAFE_CAST
        return SAFE_CAST<T*>(this);
#else
        if (!this)
            return NULL;
        if (is_type_ptr(T::get_type_ptr_static()))
            return static_cast<T*>(this);
        else
            return NULL;
#endif
    }

    template<class T>
    const T *cast_to() const {

#ifndef NO_SAFE_CAST
        return SAFE_CAST<const T*>(this);
#else
        if (!this)
            return NULL;
        if (is_type_ptr(T::get_type_ptr_static()))
            return static_cast<const T*>(this);
        else
            return NULL;
#endif
    }

    enum {

        NOTIFICATION_POSTINITIALIZE=0,
        NOTIFICATION_PREDELETE=1
    };

    /* TYPE API */
    static void get_inheritance_list_static(List<String>* p_inheritance_list) {  p_inheritance_list->push_back("Object"); }

    static String get_type_static() { return "Object"; }
    static String get_parent_type_static() { return String(); }
    static String get_category_static() { return String(); }


    virtual String get_type() const { return "Object"; }
    virtual String get_save_type() const { return get_type(); } //type stored when saving



    virtual bool is_type(const String& p_type) const { return (p_type=="Object"); }
    virtual bool is_type_ptr(void *p_ptr) const { return get_type_ptr_static()==p_ptr; }

    _FORCE_INLINE_ const StringName& get_type_name() const {
        if (!_type_ptr) {
            return *_get_type_namev();
        } else {
            return *_type_ptr;
        }
    }

    /* IAPI */
//  void set(const String& p_name, const Variant& p_value);
//  Variant get(const String& p_name) const;

    void set(const StringName& p_name, const Variant& p_value, bool *r_valid=NULL);
    Variant get(const StringName& p_name, bool *r_valid=NULL) const;

    void get_property_list(List<PropertyInfo> *p_list,bool p_reversed=false) const;

    bool has_method(const StringName& p_method) const;
    void get_method_list(List<MethodInfo> *p_list) const;
    Variant callv(const StringName& p_method,const Array& p_args);
    virtual Variant call(const StringName& p_method,const Variant** p_args,int p_argcount,Variant::CallError &r_error);
    virtual void call_multilevel(const StringName& p_method,const Variant** p_args,int p_argcount);
    virtual void call_multilevel_reversed(const StringName& p_method,const Variant** p_args,int p_argcount);
    Variant call(const StringName& p_name, VARIANT_ARG_LIST); // C++ helper
    void call_multilevel(const StringName& p_name, VARIANT_ARG_LIST); // C++ helper

    void notification(int p_notification,bool p_reversed=false);

    //used mainly by script, get and set all INCLUDING string
    virtual Variant getvar(const Variant& p_key, bool *r_valid=NULL) const;
    virtual void setvar(const Variant& p_key, const Variant& p_value,bool *r_valid=NULL);

    /* SCRIPT */

    void set_script(const RefPtr& p_script);
    RefPtr get_script() const;

    /* SCRIPT */

    bool has_meta(const String& p_name) const;
    void set_meta(const String& p_name, const Variant& p_value );
    Variant get_meta(const String& p_name) const;
    void get_meta_list(List<String> *p_list) const;

#ifdef TOOLS_ENABLED
    void set_edited(bool p_edited);
    bool is_edited() const;
#endif

    void set_script_instance(ScriptInstance *p_instance);
    _FORCE_INLINE_ ScriptInstance* get_script_instance() const { return script_instance; }


    void add_user_signal(const MethodInfo& p_signal);
    void emit_signal(const StringName& p_name,VARIANT_ARG_LIST);
    void emit_signal(const StringName& p_name, const Variant** p_args, int p_argcount);
    void get_signal_list(List<MethodInfo> *p_signals ) const;
    void get_signal_connection_list(const StringName& p_signal,List<Connection> *p_connections) const;
    void get_all_signal_connections(List<Connection> *p_connections) const;

    Error connect(const StringName& p_signal, Object *p_to_object, const StringName& p_to_method,const Vector<Variant>& p_binds=Vector<Variant>(),uint32_t p_flags=0);
    void disconnect(const StringName& p_signal, Object *p_to_object, const StringName& p_to_method);
    bool is_connected(const StringName& p_signal, Object *p_to_object, const StringName& p_to_method) const;

    void call_deferred(const StringName& p_method,VARIANT_ARG_LIST);

    void set_block_signals(bool p_block);
    bool is_blocking_signals() const;

    Variant::Type get_static_property_type(const StringName& p_property,bool *r_valid=NULL) const;

    virtual void get_translatable_strings(List<String> *p_strings) const;

    virtual void get_argument_options(const StringName& p_function,int p_idx,List<String>*r_options) const;

    StringName XL_MESSAGE(const StringName& p_message) const; //translate message (internationalization)
    StringName tr(const StringName& p_message) const; //translate message (alternative)

    bool _is_queued_for_deletion; // set to true by SceneTree::queue_delete()
    bool is_queued_for_deletion() const;

    _FORCE_INLINE_ void set_message_translation(bool p_enable) { _can_translate=p_enable; }
    _FORCE_INLINE_ bool can_translate_messages() const { return _can_translate; }

    void clear_internal_resource_paths();

    Object();
    virtual ~Object();

};


bool predelete_handler(Object *p_object);
void postinitialize_handler(Object *p_object);

class ObjectDB {

    struct ObjectPtrHash {

        static _FORCE_INLINE_ uint32_t hash(const Object *p_obj) {

            union {
                const Object*p;
                unsigned long i;
            } u;
            u.p=p_obj;
            return HashMapHahserDefault::hash((uint64_t)u.i);
        }
    };

    static HashMap<uint32_t,Object*> instances;
    static HashMap<Object*,ObjectID,ObjectPtrHash> instance_checks;

    static uint32_t instance_counter;
friend class Object;
friend void unregister_core_types();

    static void cleanup();
    static uint32_t add_instance(Object *p_object);
    static void remove_instance(Object *p_object);
public:

    typedef void (*DebugFunc)(Object *p_obj);

    static Object *get_instance(uint32_t p_instance_ID);
    static void debug_objects(DebugFunc p_func);
    static int get_object_count();

#ifdef DEBUG_ENABLED
    _FORCE_INLINE_ static bool instance_validate(Object* p_ptr) {

        return instance_checks.has(p_ptr);
    }
#else
    _FORCE_INLINE_ static bool instance_validate(Object* p_ptr) { return true; }

#endif



};

//needed by macros
#include "object_type_db.h"

#endif