/*************************************************************************/
/*  navigation.cpp                                                       */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* The above copyright notice and this permission notice shall be        */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/*************************************************************************/

#include "navigation.h"

#include "servers/navigation_server.h"

Vector<Vector3> Navigation::get_simple_path(const Vector3 &p_start, const Vector3 &p_end, bool p_optimize) const {

	return NavigationServer::get_singleton()->map_get_path(map, p_start, p_end, p_optimize);
}

Vector3 Navigation::get_closest_point_to_segment(const Vector3 &p_from, const Vector3 &p_to, bool p_use_collision) const {
	return NavigationServer::get_singleton()->map_get_closest_point_to_segment(map, p_from, p_to, p_use_collision);
}

Vector3 Navigation::get_closest_point(const Vector3 &p_point) const {
	return NavigationServer::get_singleton()->map_get_closest_point(map, p_point);
}

Vector3 Navigation::get_closest_point_normal(const Vector3 &p_point) const {
	return NavigationServer::get_singleton()->map_get_closest_point_normal(map, p_point);
}

RID Navigation::get_closest_point_owner(const Vector3 &p_point) const {
	return NavigationServer::get_singleton()->map_get_closest_point_owner(map, p_point);
}

void Navigation::set_up_vector(const Vector3 &p_up) {

	up = p_up;
	NavigationServer::get_singleton()->map_set_up(map, up);
}

Vector3 Navigation::get_up_vector() const {

	return up;
}

void Navigation::set_cell_size(float p_cell_size) {
	cell_size = p_cell_size;
	NavigationServer::get_singleton()->map_set_cell_size(map, cell_size);
}

void Navigation::set_edge_connection_margin(float p_edge_connection_margin) {
	edge_connection_margin = p_edge_connection_margin;
	NavigationServer::get_singleton()->map_set_edge_connection_margin(map, edge_connection_margin);
}

void Navigation::_bind_methods() {

	ClassDB::bind_method(D_METHOD("get_rid"), &Navigation::get_rid);

	ClassDB::bind_method(D_METHOD("get_simple_path", "start", "end", "optimize"), &Navigation::get_simple_path, DEFVAL(true));
	ClassDB::bind_method(D_METHOD("get_closest_point_to_segment", "start", "end", "use_collision"), &Navigation::get_closest_point_to_segment, DEFVAL(false));
	ClassDB::bind_method(D_METHOD("get_closest_point", "to_point"), &Navigation::get_closest_point);
	ClassDB::bind_method(D_METHOD("get_closest_point_normal", "to_point"), &Navigation::get_closest_point_normal);
	ClassDB::bind_method(D_METHOD("get_closest_point_owner", "to_point"), &Navigation::get_closest_point_owner);

	ClassDB::bind_method(D_METHOD("set_up_vector", "up"), &Navigation::set_up_vector);
	ClassDB::bind_method(D_METHOD("get_up_vector"), &Navigation::get_up_vector);

	ClassDB::bind_method(D_METHOD("set_cell_size", "cell_size"), &Navigation::set_cell_size);
	ClassDB::bind_method(D_METHOD("get_cell_size"), &Navigation::get_cell_size);

	ClassDB::bind_method(D_METHOD("set_edge_connection_margin", "margin"), &Navigation::set_edge_connection_margin);
	ClassDB::bind_method(D_METHOD("get_edge_connection_margin"), &Navigation::get_edge_connection_margin);

	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "up_vector"), "set_up_vector", "get_up_vector");
	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "cell_size"), "set_cell_size", "get_cell_size");
	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "edge_connection_margin"), "set_edge_connection_margin", "get_edge_connection_margin");
}

void Navigation::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_READY: {
			NavigationServer::get_singleton()->map_set_active(map, true);
		} break;
		case NOTIFICATION_EXIT_TREE: {

			NavigationServer::get_singleton()->map_set_active(map, false);
		} break;
	}
}

Navigation::Navigation() {

	map = NavigationServer::get_singleton()->map_create();

	set_cell_size(0.3);
	set_edge_connection_margin(5.0); // Five meters, depends alot on the agents radius

	up = Vector3(0, 1, 0);
}

Navigation::~Navigation() {
	NavigationServer::get_singleton()->free(map);
}