120 lines
4.9 KiB
C++
120 lines
4.9 KiB
C++
/*************************************************************************/
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/* navigation_obstacle_2d.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "navigation_obstacle_2d.h"
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#include "scene/2d/collision_shape_2d.h"
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#include "scene/2d/physics_body_2d.h"
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#include "servers/navigation_server_2d.h"
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void NavigationObstacle2D::_bind_methods() {
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}
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void NavigationObstacle2D::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_READY: {
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set_physics_process_internal(true);
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} break;
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case NOTIFICATION_EXIT_TREE: {
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set_physics_process_internal(false);
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} break;
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case NOTIFICATION_PARENTED: {
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parent_node2d = Object::cast_to<Node2D>(get_parent());
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update_agent_shape();
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} break;
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case NOTIFICATION_UNPARENTED: {
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parent_node2d = nullptr;
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} break;
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case NOTIFICATION_INTERNAL_PHYSICS_PROCESS: {
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if (parent_node2d) {
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NavigationServer2D::get_singleton()->agent_set_position(agent, parent_node2d->get_global_transform().get_origin());
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}
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} break;
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}
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}
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NavigationObstacle2D::NavigationObstacle2D() {
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agent = NavigationServer2D::get_singleton()->agent_create();
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}
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NavigationObstacle2D::~NavigationObstacle2D() {
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NavigationServer2D::get_singleton()->free(agent);
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agent = RID(); // Pointless
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}
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String NavigationObstacle2D::get_configuration_warning() const {
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String warning = Node::get_configuration_warning();
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if (!Object::cast_to<Node2D>(get_parent())) {
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if (!warning.is_empty()) {
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warning += "\n\n";
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}
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warning += TTR("The NavigationObstacle2D only serves to provide collision avoidance to a Node2D object.");
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}
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return warning;
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}
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void NavigationObstacle2D::update_agent_shape() {
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if (parent_node2d) {
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// Estimate the radius of this physics body
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real_t radius = 0.0;
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for (int i(0); i < parent_node2d->get_child_count(); i++) {
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// For each collision shape
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CollisionShape2D *cs = Object::cast_to<CollisionShape2D>(parent_node2d->get_child(i));
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if (cs) {
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// Take the distance between the Body center to the shape center
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real_t r = cs->get_transform().get_origin().length();
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if (cs->get_shape().is_valid()) {
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// and add the enclosing shape radius
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r += cs->get_shape()->get_enclosing_radius();
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}
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Size2 s = cs->get_global_transform().get_scale();
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r *= MAX(s.x, s.y);
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// Takes the biggest radius
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radius = MAX(radius, r);
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}
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}
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Vector2 s = parent_node2d->get_global_transform().get_scale();
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radius *= MAX(s.x, s.y);
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if (radius == 0.0) {
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radius = 1.0; // Never a 0 radius
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}
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// Initialize the Agent as an object
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NavigationServer2D::get_singleton()->agent_set_neighbor_dist(agent, 0.0);
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NavigationServer2D::get_singleton()->agent_set_max_neighbors(agent, 0);
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NavigationServer2D::get_singleton()->agent_set_time_horizon(agent, 0.0);
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NavigationServer2D::get_singleton()->agent_set_radius(agent, radius);
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NavigationServer2D::get_singleton()->agent_set_max_speed(agent, 0.0);
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}
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}
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