godot/modules/navigation_2d/nav_link_2d.cpp

/**************************************************************************/
/*  nav_link_2d.cpp                                                       */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "nav_link_2d.h"

#include "nav_map_2d.h"

void NavLink2D::set_map(NavMap2D *p_map) {
	if (map == p_map) {
		return;
	}

	cancel_sync_request();

	if (map) {
		map->remove_link(this);
	}

	map = p_map;
	link_dirty = true;

	if (map) {
		map->add_link(this);
		request_sync();
	}
}

void NavLink2D::set_enabled(bool p_enabled) {
	if (enabled == p_enabled) {
		return;
	}
	enabled = p_enabled;

	// TODO: This should not require a full rebuild as the link has not really changed.
	link_dirty = true;

	request_sync();
}

void NavLink2D::set_bidirectional(bool p_bidirectional) {
	if (bidirectional == p_bidirectional) {
		return;
	}
	bidirectional = p_bidirectional;
	link_dirty = true;

	request_sync();
}

void NavLink2D::set_start_position(const Vector2 &p_position) {
	if (start_position == p_position) {
		return;
	}
	start_position = p_position;
	link_dirty = true;

	request_sync();
}

void NavLink2D::set_end_position(const Vector2 &p_position) {
	if (end_position == p_position) {
		return;
	}
	end_position = p_position;
	link_dirty = true;

	request_sync();
}

void NavLink2D::set_navigation_layers(uint32_t p_navigation_layers) {
	if (navigation_layers == p_navigation_layers) {
		return;
	}
	navigation_layers = p_navigation_layers;
	link_dirty = true;

	request_sync();
}

void NavLink2D::set_enter_cost(real_t p_enter_cost) {
	real_t new_enter_cost = MAX(p_enter_cost, 0.0);
	if (enter_cost == new_enter_cost) {
		return;
	}
	enter_cost = new_enter_cost;
	link_dirty = true;

	request_sync();
}

void NavLink2D::set_travel_cost(real_t p_travel_cost) {
	real_t new_travel_cost = MAX(p_travel_cost, 0.0);
	if (travel_cost == new_travel_cost) {
		return;
	}
	travel_cost = new_travel_cost;
	link_dirty = true;

	request_sync();
}

void NavLink2D::set_owner_id(ObjectID p_owner_id) {
	if (owner_id == p_owner_id) {
		return;
	}
	owner_id = p_owner_id;
	link_dirty = true;

	request_sync();
}

bool NavLink2D::is_dirty() const {
	return link_dirty;
}

void NavLink2D::sync() {
	link_dirty = false;
}

void NavLink2D::request_sync() {
	if (map && !sync_dirty_request_list_element.in_list()) {
		map->add_link_sync_dirty_request(&sync_dirty_request_list_element);
	}
}

void NavLink2D::cancel_sync_request() {
	if (map && sync_dirty_request_list_element.in_list()) {
		map->remove_link_sync_dirty_request(&sync_dirty_request_list_element);
	}
}

NavLink2D::NavLink2D() :
		sync_dirty_request_list_element(this) {
	type = NavigationUtilities::PathSegmentType::PATH_SEGMENT_TYPE_LINK;
}

NavLink2D::~NavLink2D() {
	cancel_sync_request();
}

void NavLink2D::get_iteration_update(NavLinkIteration2D &r_iteration) {
	r_iteration.navigation_layers = get_navigation_layers();
	r_iteration.enter_cost = get_enter_cost();
	r_iteration.travel_cost = get_travel_cost();
	r_iteration.owner_object_id = get_owner_id();
	r_iteration.owner_type = get_type();
	r_iteration.owner_rid = get_self();

	r_iteration.enabled = get_enabled();
	r_iteration.start_position = get_start_position();
	r_iteration.end_position = get_end_position();
	r_iteration.bidirectional = is_bidirectional();
}