godot/core/object.h

/*************************************************************************/
/*  object.h                                                             */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 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"
#include "os/rw_lock.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]

/**
@author Juan Linietsky <reduzio@gmail.com>
*/

enum PropertyHint {
	PROPERTY_HINT_NONE, ///< no hint provided.
	PROPERTY_HINT_RANGE, ///< hint_text = "min,max,step,slider; //slider is optional"
	PROPERTY_HINT_EXP_RANGE, ///< hint_text = "min,max,step", exponential edit
	PROPERTY_HINT_ENUM, ///< hint_text= "val1,val2,val3,etc"
	PROPERTY_HINT_EXP_EASING, /// exponential easing funciton (Math::ease)
	PROPERTY_HINT_LENGTH, ///< hint_text= "length" (as integer)
	PROPERTY_HINT_SPRITE_FRAME,
	PROPERTY_HINT_KEY_ACCEL, ///< hint_text= "length" (as integer)
	PROPERTY_HINT_FLAGS, ///< hint_text= "flag1,flag2,etc" (as bit flags)
	PROPERTY_HINT_ALL_FLAGS,
	PROPERTY_HINT_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,"
	PROPERTY_HINT_DIR, ///< a directort path must be passed
	PROPERTY_HINT_GLOBAL_FILE, ///< a file path must be passed, hint_text (optionally) is a filter "*.png,*.wav,*.doc,"
	PROPERTY_HINT_GLOBAL_DIR, ///< a directort path must be passed
	PROPERTY_HINT_RESOURCE_TYPE, ///< a resource object type
	PROPERTY_HINT_MULTILINE_TEXT, ///< used for string properties that can contain multiple lines
	PROPERTY_HINT_COLOR_NO_ALPHA, ///< used for ignoring alpha component when editing a color
	PROPERTY_HINT_IMAGE_COMPRESS_LOSSY,
	PROPERTY_HINT_IMAGE_COMPRESS_LOSSLESS,
	PROPERTY_HINT_OBJECT_ID,
	PROPERTY_HINT_TYPE_STRING, ///< a type string, the hint is the base type to choose
	PROPERTY_HINT_NODE_PATH_TO_EDITED_NODE, ///< so something else can provide this (used in scripts)
	PROPERTY_HINT_METHOD_OF_VARIANT_TYPE, ///< a method of a type
	PROPERTY_HINT_METHOD_OF_BASE_TYPE, ///< a method of a base type
	PROPERTY_HINT_METHOD_OF_INSTANCE, ///< a method of an instance
	PROPERTY_HINT_METHOD_OF_SCRIPT, ///< a method of a script & base
	PROPERTY_HINT_PROPERTY_OF_VARIANT_TYPE, ///< a property of a type
	PROPERTY_HINT_PROPERTY_OF_BASE_TYPE, ///< a property of a base type
	PROPERTY_HINT_PROPERTY_OF_INSTANCE, ///< a property of an instance
	PROPERTY_HINT_PROPERTY_OF_SCRIPT, ///< a property of a script & base
	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_GROUP=128, //used for grouping props in the editor
	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_RESTART_IF_CHANGED=4096,
	PROPERTY_USAGE_SCRIPT_VARIABLE=8192,
	PROPERTY_USAGE_STORE_IF_NULL=16384,
	PROPERTY_USAGE_ANIMATE_AS_TRIGGER=32768,

	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 ) ClassDB::add_signal( get_class_static(), m_signal )
#define ADD_PROPERTY( m_property, m_setter, m_getter ) ClassDB::add_property( get_class_static(), m_property, m_setter, m_getter )
#define ADD_PROPERTYI( m_property, m_setter, m_getter, m_index ) ClassDB::add_property( get_class_static(), m_property, m_setter, m_getter, m_index )
#define ADD_PROPERTYNZ( m_property, m_setter, m_getter ) ClassDB::add_property( get_class_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 ) ClassDB::add_property( get_class_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 ) ClassDB::add_property( get_class_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 ) ClassDB::add_property( get_class_static(), (m_property).added_usage(PROPERTY_USAGE_STORE_IF_NONONE), m_setter, m_getter, m_index )
#define ADD_GROUP( m_name, m_prefix ) ClassDB::add_property_group( get_class_static(), m_name, m_prefix )

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; }


	operator Dictionary() const;

	static PropertyInfo from_dict(const Dictionary& p_dict);

	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); }

	operator Dictionary() const;

	static MethodInfo from_dict(const Dictionary& p_dict);
	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_class_static()) )
//return static_cast<T*>(this);
////else
//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 GDCLASS( m_class, m_inherits )\
private:\
	void operator=(const m_class& p_rval) {}\
	mutable StringName _class_name;\
	friend class ClassDB;\
public:\
virtual String get_class() const { \
	return String(#m_class);\
}\
virtual const StringName* _get_class_namev() const { \
	if (!_class_name)\
		_class_name=get_class_static();\
	return &_class_name;\
}\
static _FORCE_INLINE_ void* get_class_ptr_static() { \
	static int ptr;\
	return &ptr;\
}\
static _FORCE_INLINE_ String get_class_static() { \
	return String(#m_class);\
}\
static _FORCE_INLINE_ String get_parent_class_static() { \
	return m_inherits::get_class_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_class));\
}\
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_class(const String& p_class) const { return (p_class==(#m_class))?true:m_inherits::is_class(p_class); }\
virtual bool is_class_ptr(void *p_ptr) const { return (p_ptr==get_class_ptr_static())?true:m_inherits::is_class_ptr(p_ptr); }\
\
\
static void get_valid_parents_static(List<String> *p_parents) {\
\
	if (m_class::_get_valid_parents_static!=m_inherits::_get_valid_parents_static) {	\
		m_class::_get_valid_parents_static(p_parents);\
	}\
\
	m_inherits::get_valid_parents_static(p_parents);\
}\
protected:\
_FORCE_INLINE_ static void (*_get_bind_methods())() {\
	return &m_class::_bind_methods;\
}\
public:\
static void initialize_class() {\
	static bool initialized=false;\
	if (initialized)\
		return;\
	m_inherits::initialize_class();\
	ClassDB::_add_class<m_class>();\
	if (m_class::_get_bind_methods() != m_inherits::_get_bind_methods())\
		_bind_methods();\
	initialized=true;\
}\
protected:\
virtual void _initialize_classv() {\
	initialize_class();\
}\
_FORCE_INLINE_ bool (Object::* (_get_get() const))(const StringName& p_name,Variant&) const {\
	return (bool (Object::*)(const StringName&,Variant&)const) &m_class::_get;\
}\
virtual bool _getv(const StringName& p_name, Variant& r_ret) const { \
	if (m_class::_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_class::_set;\
}\
virtual bool _setv(const StringName& p_name,const Variant &p_property) { \
	if (m_inherits::_setv(p_name,p_property)) return true;\
	if (m_class::_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_class::_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_class_static(),PROPERTY_HINT_NONE,String(),PROPERTY_USAGE_CATEGORY));\
	if (!_is_gpl_reversed())\
		ClassDB::get_property_list(#m_class,p_list,true,this);\
	if (m_class::_get_get_property_list() != m_inherits::_get_get_property_list()) {\
		_get_property_list(p_list);\
	}\
	if (_is_gpl_reversed())\
		ClassDB::get_property_list(#m_class,p_list,true,this);\
	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_class::_notification;\
}\
virtual void _notificationv(int p_notification,bool p_reversed) { \
	if (!p_reversed) \
		m_inherits::_notificationv(p_notification,p_reversed);\
	if (m_class::_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_class) \
public: \
virtual String get_save_class() const { return #m_class; }\
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;
	uint32_t _edited_version;
#endif
	ScriptInstance *script_instance;
	RefPtr script;
	Dictionary metadata;
	mutable StringName _class_name;
	mutable const StringName* _class_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 void _initialize_classv() { initialize_class(); }
	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_class_namev() const {
		if (!_class_name)
			_class_name=get_class_static();
		return &_class_name;
	}

	PoolVector<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);

friend class ClassDB;
	virtual void _validate_property(PropertyInfo& property) const;

public: //should be protected, but bug in clang++
	static void initialize_class();
	_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_class_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_class_ptr(T::get_class_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_class_ptr(T::get_class_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_class_static() { return "Object"; }
	static String get_parent_class_static() { return String(); }
	static String get_category_static() { return String(); }


	virtual String get_class() const { return "Object"; }
	virtual String get_save_class() const { return get_class(); } //class stored when saving



	virtual bool is_class(const String& p_class) const { return (p_class=="Object"); }
	virtual bool is_class_ptr(void *p_ptr) const { return get_class_ptr_static()==p_ptr; }

	_FORCE_INLINE_ const StringName& get_class_name() const {
		if (!_class_ptr) {
			return *_get_class_namev();
		} else {
			return *_class_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;
	uint32_t get_edited_version() const; //this function is used to check when something changed beyond a point, it's used mainly for generating previews
#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;
	bool has_persistent_signal_connections() const;
	void get_signals_connected_to_this(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 RWLock *rw_lock;
	static void cleanup();
	static uint32_t add_instance(Object *p_object);
	static void remove_instance(Object *p_object);
friend void register_core_types();
	static void setup();

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