#ifndef WORLD_3D_H
#define WORLD_3D_H

/*************************************************************************/
/*  world_3d.h                                                           */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 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.                */
/*************************************************************************/

#include "core/object/resource.h"
#include "scene/resources/environment_3d.h"
#include "servers/physics_server.h"
#include "servers/rendering_server.h"

class Camera;
class VisibilityNotifier;
class LOD;
struct SpatialIndexer;
class LODManager;

class World3D : public Resource {
	GDCLASS(World3D, Resource);
	RES_BASE_EXTENSION("world3d");

private:
	RID space;
	RID scenario;
	RID navigation_map;
	RID vertex_lights_3d_map;
	SpatialIndexer *indexer;
	LODManager *lod_manager = nullptr;
	Ref<Environment3D> environment;
	Ref<Environment3D> fallback_environment;

protected:
	static void _bind_methods();

	friend class Camera;
	friend class VisibilityNotifier;
	friend class LOD;

	void _register_camera(Camera *p_camera);
	void _update_camera(Camera *p_camera);
	void _remove_camera(Camera *p_camera);

	void _register_notifier(VisibilityNotifier *p_notifier, const AABB &p_rect);
	void _update_notifier(VisibilityNotifier *p_notifier, const AABB &p_rect);
	void _remove_notifier(VisibilityNotifier *p_notifier);

	void _register_lod(LOD *p_lod, uint32_t p_queue_id);
	void _unregister_lod(LOD *p_lod, uint32_t p_queue_id);

	friend class Viewport;
	friend class World;
	void _update(uint64_t p_frame);

public:
	RID get_space() const;
	RID get_scenario() const;
	RID get_navigation_map() const;

	// TODO Maybe World should have a callback on creation?
	RID get_vertex_lights_3d_map();

	void set_environment(const Ref<Environment3D> &p_environment);
	Ref<Environment3D> get_environment() const;

	void set_fallback_environment(const Ref<Environment3D> &p_environment);
	Ref<Environment3D> get_fallback_environment() const;

	void get_camera_list(List<Camera *> *r_cameras);

	PhysicsDirectSpaceState *get_direct_space_state();

	void move_cameras_into(Ref<World3D> target);
	void notify_saving(bool p_active);

	World3D();
	~World3D();
};

#endif // WORLD_3D_H