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/*************************************************************************/
/* navigation_obstacle_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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 "navigation_obstacle_2d.h"
#include "scene/2d/collision_shape_2d.h"
#include "scene/2d/navigation_2d.h"
#include "scene/2d/physics_body_2d.h"
#include "servers/navigation_server_2d.h"
void NavigationObstacle2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_navigation", "navigation"), &NavigationObstacle2D::set_navigation_node);
ClassDB::bind_method(D_METHOD("get_navigation"), &NavigationObstacle2D::get_navigation_node);
}
void NavigationObstacle2D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_READY: {
update_agent_shape();
// Search the navigation node and set it
{
Navigation2D *nav = nullptr;
Node *p = get_parent();
while (p != nullptr) {
nav = Object::cast_to<Navigation2D>(p);
if (nav != nullptr) {
p = nullptr;
} else {
p = p->get_parent();
}
}
set_navigation(nav);
}
set_physics_process_internal(true);
} break;
case NOTIFICATION_EXIT_TREE: {
set_navigation(nullptr);
set_physics_process_internal(false);
} break;
case NOTIFICATION_INTERNAL_PHYSICS_PROCESS: {
Node2D *node = Object::cast_to<Node2D>(get_parent());
if (node) {
NavigationServer2D::get_singleton()->agent_set_position(agent, node->get_global_transform().get_origin());
}
} break;
}
}
NavigationObstacle2D::NavigationObstacle2D() {
agent = NavigationServer2D::get_singleton()->agent_create();
}
NavigationObstacle2D::~NavigationObstacle2D() {
NavigationServer2D::get_singleton()->free(agent);
agent = RID(); // Pointless
}
void NavigationObstacle2D::set_navigation(Navigation2D *p_nav) {
if (navigation == p_nav) {
return; // Pointless
}
navigation = p_nav;
NavigationServer2D::get_singleton()->agent_set_map(agent, navigation == nullptr ? RID() : navigation->get_rid());
}
void NavigationObstacle2D::set_navigation_node(Node *p_nav) {
Navigation2D *nav = Object::cast_to<Navigation2D>(p_nav);
ERR_FAIL_COND(nav == nullptr);
set_navigation(nav);
}
Node *NavigationObstacle2D::get_navigation_node() const {
return Object::cast_to<Node>(navigation);
}
String NavigationObstacle2D::get_configuration_warning() const {
String warning = Node::get_configuration_warning();
if (!Object::cast_to<Node2D>(get_parent())) {
if (!warning.is_empty()) {
warning += "\n\n";
}
warning += TTR("The NavigationObstacle2D only serves to provide collision avoidance to a Node2D object.");
}
return warning;
}
void NavigationObstacle2D::update_agent_shape() {
Node *node = get_parent();
// Estimate the radius of this physics body
real_t radius = 0.0;
for (int i(0); i < node->get_child_count(); i++) {
// For each collision shape
CollisionShape2D *cs = Object::cast_to<CollisionShape2D>(node->get_child(i));
if (cs) {
// Take the distance between the Body center to the shape center
real_t r = cs->get_transform().get_origin().length();
if (cs->get_shape().is_valid()) {
// and add the enclosing shape radius
r += cs->get_shape()->get_enclosing_radius();
}
Size2 s = cs->get_global_transform().get_scale();
r *= MAX(s.x, s.y);
// Takes the biggest radius
radius = MAX(radius, r);
}
}
Node2D *node_2d = Object::cast_to<Node2D>(node);
if (node_2d) {
Vector2 s = node_2d->get_global_transform().get_scale();
radius *= MAX(s.x, s.y);
}
if (radius == 0.0) {
radius = 1.0; // Never a 0 radius
}
// Initialize the Agent as an object
NavigationServer2D::get_singleton()->agent_set_neighbor_dist(agent, 0.0);
NavigationServer2D::get_singleton()->agent_set_max_neighbors(agent, 0);
NavigationServer2D::get_singleton()->agent_set_time_horizon(agent, 0.0);
NavigationServer2D::get_singleton()->agent_set_radius(agent, radius);
NavigationServer2D::get_singleton()->agent_set_max_speed(agent, 0.0);
}
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