godot/scene/3d/listener.cpp

/*************************************************************************/
/*  listener.cpp                                                         */
/*************************************************************************/
/*                       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.                */
/*************************************************************************/
#include "listener.h"

#include "scene/resources/mesh.h"

void Listener::_update_audio_listener_state() {
}

void Listener::_request_listener_update() {

	_update_listener();
}

bool Listener::_set(const StringName &p_name, const Variant &p_value) {

	if (p_name == "current") {
		if (p_value.operator bool()) {
			make_current();
		} else {
			clear_current();
		}
	} else
		return false;

	return true;
}
bool Listener::_get(const StringName &p_name, Variant &r_ret) const {

	if (p_name == "current") {
		if (is_inside_tree() && get_tree()->is_node_being_edited(this)) {
			r_ret = current;
		} else {
			r_ret = is_current();
		}
	} else
		return false;

	return true;
}

void Listener::_get_property_list(List<PropertyInfo> *p_list) const {

	p_list->push_back(PropertyInfo(Variant::BOOL, "current"));
}

void Listener::_update_listener() {

	if (is_inside_tree() && is_current()) {
		get_viewport()->_listener_transform_changed_notify();
	}
}

void Listener::_notification(int p_what) {

	switch (p_what) {

		case NOTIFICATION_ENTER_WORLD: {
			bool first_listener = get_viewport()->_listener_add(this);
			if (!get_tree()->is_node_being_edited(this) && (current || first_listener))
				make_current();
		} break;
		case NOTIFICATION_TRANSFORM_CHANGED: {
			_request_listener_update();
		} break;
		case NOTIFICATION_EXIT_WORLD: {

			if (!get_tree()->is_node_being_edited(this)) {
				if (is_current()) {
					clear_current();
					current = true; //keep it true

				} else {
					current = false;
				}
			}

			get_viewport()->_listener_remove(this);

		} break;
	}
}

Transform Listener::get_listener_transform() const {

	return get_global_transform().orthonormalized();
}

void Listener::make_current() {

	current = true;

	if (!is_inside_tree())
		return;

	get_viewport()->_listener_set(this);
}

void Listener::clear_current() {

	current = false;
	if (!is_inside_tree())
		return;

	if (get_viewport()->get_listener() == this) {
		get_viewport()->_listener_set(NULL);
		get_viewport()->_listener_make_next_current(this);
	}
}

bool Listener::is_current() const {

	if (is_inside_tree() && !get_tree()->is_node_being_edited(this)) {

		return get_viewport()->get_listener() == this;
	} else
		return current;

	return false;
}

bool Listener::_can_gizmo_scale() const {

	return false;
}

RES Listener::_get_gizmo_geometry() const {
	Ref<Mesh> mesh = memnew(Mesh);

	return mesh;
}

void Listener::_bind_methods() {

	ClassDB::bind_method(D_METHOD("make_current"), &Listener::make_current);
	ClassDB::bind_method(D_METHOD("clear_current"), &Listener::clear_current);
	ClassDB::bind_method(D_METHOD("is_current"), &Listener::is_current);
	ClassDB::bind_method(D_METHOD("get_listener_transform"), &Listener::get_listener_transform);
}

Listener::Listener() {

	current = false;
	force_change = false;
	set_notify_transform(true);
	//active=false;
}

Listener::~Listener() {
}