godot-cpp/include/godot_cpp/godot.hpp

/*************************************************************************/
/*  godot.hpp                                                            */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/*************************************************************************/

#ifndef GODOT_GODOT_HPP
#define GODOT_GODOT_HPP

#include <godot/gdextension_interface.h>

namespace godot {

namespace internal {

extern "C" const GDExtensionInterface *gde_interface;
extern "C" GDExtensionClassLibraryPtr library;
extern "C" void *token;

} // namespace internal

enum ModuleInitializationLevel {
	MODULE_INITIALIZATION_LEVEL_CORE = GDEXTENSION_INITIALIZATION_CORE,
	MODULE_INITIALIZATION_LEVEL_SERVERS = GDEXTENSION_INITIALIZATION_SERVERS,
	MODULE_INITIALIZATION_LEVEL_SCENE = GDEXTENSION_INITIALIZATION_SCENE,
	MODULE_INITIALIZATION_LEVEL_EDITOR = GDEXTENSION_INITIALIZATION_EDITOR
};

class GDExtensionBinding {
public:
	using Callback = void (*)(ModuleInitializationLevel p_level);

	static Callback init_callback;
	static Callback terminate_callback;
	static GDExtensionInitializationLevel minimum_initialization_level;
	static GDExtensionBool init(const GDExtensionInterface *p_interface, GDExtensionClassLibraryPtr p_library, GDExtensionInitialization *r_initialization);

public:
	static void initialize_level(void *userdata, GDExtensionInitializationLevel p_level);
	static void deinitialize_level(void *userdata, GDExtensionInitializationLevel p_level);

	class InitObject {
		const GDExtensionInterface *gde_interface;
		GDExtensionClassLibraryPtr library;
		GDExtensionInitialization *initialization;

	public:
		InitObject(const GDExtensionInterface *p_interface, GDExtensionClassLibraryPtr p_library, GDExtensionInitialization *r_initialization) :
				gde_interface(p_interface),
				library(p_library),
				initialization(r_initialization) {}

		void register_initializer(Callback p_init) const;
		void register_terminator(Callback p_init) const;
		void set_minimum_library_initialization_level(ModuleInitializationLevel p_level) const;

		GDExtensionBool init() const;
	};
};

} // namespace godot

#endif // GODOT_GODOT_HPP