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godot/scene/3d/navigation_region_3d.cpp

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/*************************************************************************/
/* navigation_region_3d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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_region_3d.h"
#include "core/os/thread.h"
#include "mesh_instance_3d.h"
#include "navigation_3d.h"
#include "servers/navigation_server_3d.h"
void NavigationRegion3D::set_enabled(bool p_enabled) {
if (enabled == p_enabled) {
return;
}
enabled = p_enabled;
if (!is_inside_tree()) {
return;
}
if (!enabled) {
NavigationServer3D::get_singleton()->region_set_map(region, RID());
} else {
if (navigation) {
NavigationServer3D::get_singleton()->region_set_map(region, navigation->get_rid());
}
}
if (debug_view) {
MeshInstance3D *dm = Object::cast_to<MeshInstance3D>(debug_view);
if (is_enabled()) {
dm->set_material_override(get_tree()->get_debug_navigation_material());
} else {
dm->set_material_override(get_tree()->get_debug_navigation_disabled_material());
}
}
update_gizmo();
}
bool NavigationRegion3D::is_enabled() const {
return enabled;
}
/////////////////////////////
void NavigationRegion3D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_ENTER_TREE: {
Node3D *c = this;
while (c) {
navigation = Object::cast_to<Navigation3D>(c);
if (navigation) {
if (enabled) {
NavigationServer3D::get_singleton()->region_set_map(region, navigation->get_rid());
}
break;
}
c = c->get_parent_spatial();
}
if (navmesh.is_valid() && get_tree()->is_debugging_navigation_hint()) {
MeshInstance3D *dm = memnew(MeshInstance3D);
dm->set_mesh(navmesh->get_debug_mesh());
if (is_enabled()) {
dm->set_material_override(get_tree()->get_debug_navigation_material());
} else {
dm->set_material_override(get_tree()->get_debug_navigation_disabled_material());
}
add_child(dm);
debug_view = dm;
}
} break;
case NOTIFICATION_TRANSFORM_CHANGED: {
NavigationServer3D::get_singleton()->region_set_transform(region, get_global_transform());
} break;
case NOTIFICATION_EXIT_TREE: {
if (navigation) {
NavigationServer3D::get_singleton()->region_set_map(region, RID());
}
if (debug_view) {
debug_view->queue_delete();
debug_view = nullptr;
}
navigation = nullptr;
} break;
}
}
void NavigationRegion3D::set_navigation_mesh(const Ref<NavigationMesh> &p_navmesh) {
if (p_navmesh == navmesh) {
return;
}
if (navmesh.is_valid()) {
navmesh->disconnect("changed", callable_mp(this, &NavigationRegion3D::_navigation_changed));
}
navmesh = p_navmesh;
if (navmesh.is_valid()) {
navmesh->connect("changed", callable_mp(this, &NavigationRegion3D::_navigation_changed));
}
NavigationServer3D::get_singleton()->region_set_navmesh(region, p_navmesh);
if (debug_view && navmesh.is_valid()) {
Object::cast_to<MeshInstance3D>(debug_view)->set_mesh(navmesh->get_debug_mesh());
}
emit_signal("navigation_mesh_changed");
update_gizmo();
update_configuration_warning();
}
Ref<NavigationMesh> NavigationRegion3D::get_navigation_mesh() const {
return navmesh;
}
struct BakeThreadsArgs {
NavigationRegion3D *nav_region = nullptr;
};
void _bake_navigation_mesh(void *p_user_data) {
BakeThreadsArgs *args = static_cast<BakeThreadsArgs *>(p_user_data);
if (args->nav_region->get_navigation_mesh().is_valid()) {
Ref<NavigationMesh> nav_mesh = args->nav_region->get_navigation_mesh()->duplicate();
NavigationServer3D::get_singleton()->region_bake_navmesh(nav_mesh, args->nav_region);
args->nav_region->call_deferred("_bake_finished", nav_mesh);
memdelete(args);
} else {
ERR_PRINT("Can't bake the navigation mesh if the `NavigationMesh` resource doesn't exist");
args->nav_region->call_deferred("_bake_finished", Ref<NavigationMesh>());
memdelete(args);
}
}
void NavigationRegion3D::bake_navigation_mesh() {
ERR_FAIL_COND(bake_thread.is_started());
BakeThreadsArgs *args = memnew(BakeThreadsArgs);
args->nav_region = this;
bake_thread.start(_bake_navigation_mesh, args);
}
void NavigationRegion3D::_bake_finished(Ref<NavigationMesh> p_nav_mesh) {
set_navigation_mesh(p_nav_mesh);
bake_thread.wait_to_finish();
emit_signal("bake_finished");
}
String NavigationRegion3D::get_configuration_warning() const {
if (!is_visible_in_tree() || !is_inside_tree()) {
return String();
}
String warning = Node3D::get_configuration_warning();
if (!navmesh.is_valid()) {
if (!warning.is_empty()) {
warning += "\n\n";
}
warning += TTR("A NavigationMesh resource must be set or created for this node to work.");
}
const Node3D *c = this;
while (c) {
if (Object::cast_to<Navigation3D>(c)) {
return warning;
}
c = Object::cast_to<Node3D>(c->get_parent());
}
if (!warning.is_empty()) {
warning += "\n\n";
}
return warning + TTR("NavigationRegion3D must be a child or grandchild to a Navigation3D node. It only provides navigation data.");
}
void NavigationRegion3D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_navigation_mesh", "navmesh"), &NavigationRegion3D::set_navigation_mesh);
ClassDB::bind_method(D_METHOD("get_navigation_mesh"), &NavigationRegion3D::get_navigation_mesh);
ClassDB::bind_method(D_METHOD("set_enabled", "enabled"), &NavigationRegion3D::set_enabled);
ClassDB::bind_method(D_METHOD("is_enabled"), &NavigationRegion3D::is_enabled);
ClassDB::bind_method(D_METHOD("bake_navigation_mesh"), &NavigationRegion3D::bake_navigation_mesh);
ClassDB::bind_method(D_METHOD("_bake_finished", "nav_mesh"), &NavigationRegion3D::_bake_finished);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "navmesh", PROPERTY_HINT_RESOURCE_TYPE, "NavigationMesh"), "set_navigation_mesh", "get_navigation_mesh");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "enabled"), "set_enabled", "is_enabled");
ADD_SIGNAL(MethodInfo("navigation_mesh_changed"));
ADD_SIGNAL(MethodInfo("bake_finished"));
}
void NavigationRegion3D::_navigation_changed() {
update_gizmo();
update_configuration_warning();
}
NavigationRegion3D::NavigationRegion3D() {
set_notify_transform(true);
region = NavigationServer3D::get_singleton()->region_create();
}
NavigationRegion3D::~NavigationRegion3D() {
if (navmesh.is_valid()) {
navmesh->disconnect("changed", callable_mp(this, &NavigationRegion3D::_navigation_changed));
}
NavigationServer3D::get_singleton()->free(region);
}
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