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godot/scene/3d/navigation_mesh.cpp
jfons 1add4c15ab Various improvements to NavigationMesh generation 
* Expose EditorNavigationMeshGenerator as an engine singleton so users
  can generate navmesehes from `tool` scripts.

* Add support for generating navmeshes from static colliders. All
  collision shapes are supported except for Plane (since Plane is an
  infinite collider and navmeshes need to have finite geometry).

* When using static colliders as a geometry source, a layer mask can be
  specified to ignore certain colliders.

* Don't rely on global transform. It still should give the exact same
  results but allows for building navmeshes on nodes that are not in the
  tree (useful in `tool` scripts).

* Update navigation gizmos after every new bake.

This work has been kindly sponsored by IMVU.
2019-05-23 08:37:58 +02:00

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/*************************************************************************/
/* navigation_mesh.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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_mesh.h"
#include "mesh_instance.h"
#include "navigation.h"
void NavigationMesh::create_from_mesh(const Ref<Mesh> &p_mesh) {
vertices = PoolVector<Vector3>();
clear_polygons();
for (int i = 0; i < p_mesh->get_surface_count(); i++) {
if (p_mesh->surface_get_primitive_type(i) != Mesh::PRIMITIVE_TRIANGLES)
continue;
Array arr = p_mesh->surface_get_arrays(i);
PoolVector<Vector3> varr = arr[Mesh::ARRAY_VERTEX];
PoolVector<int> iarr = arr[Mesh::ARRAY_INDEX];
if (varr.size() == 0 || iarr.size() == 0)
continue;
int from = vertices.size();
vertices.append_array(varr);
int rlen = iarr.size();
PoolVector<int>::Read r = iarr.read();
for (int j = 0; j < rlen; j += 3) {
Vector<int> vi;
vi.resize(3);
vi.write[0] = r[j + 0] + from;
vi.write[1] = r[j + 1] + from;
vi.write[2] = r[j + 2] + from;
add_polygon(vi);
}
}
}
void NavigationMesh::set_sample_partition_type(int p_value) {
ERR_FAIL_COND(p_value >= SAMPLE_PARTITION_MAX);
partition_type = static_cast<SamplePartitionType>(p_value);
}
int NavigationMesh::get_sample_partition_type() const {
return static_cast<int>(partition_type);
}
void NavigationMesh::set_parsed_geometry_type(int p_value) {
ERR_FAIL_COND(p_value >= PARSED_GEOMETRY_MAX);
parsed_geometry_type = static_cast<ParsedGeometryType>(p_value);
_change_notify();
}
int NavigationMesh::get_parsed_geometry_type() const {
return parsed_geometry_type;
}
void NavigationMesh::set_collision_mask(uint32_t p_mask) {
collision_mask = p_mask;
}
uint32_t NavigationMesh::get_collision_mask() const {
return collision_mask;
}
void NavigationMesh::set_collision_mask_bit(int p_bit, bool p_value) {
uint32_t mask = get_collision_mask();
if (p_value)
mask |= 1 << p_bit;
else
mask &= ~(1 << p_bit);
set_collision_mask(mask);
}
bool NavigationMesh::get_collision_mask_bit(int p_bit) const {
return get_collision_mask() & (1 << p_bit);
}
void NavigationMesh::set_cell_size(float p_value) {
cell_size = p_value;
}
float NavigationMesh::get_cell_size() const {
return cell_size;
}
void NavigationMesh::set_cell_height(float p_value) {
cell_height = p_value;
}
float NavigationMesh::get_cell_height() const {
return cell_height;
}
void NavigationMesh::set_agent_height(float p_value) {
agent_height = p_value;
}
float NavigationMesh::get_agent_height() const {
return agent_height;
}
void NavigationMesh::set_agent_radius(float p_value) {
agent_radius = p_value;
}
float NavigationMesh::get_agent_radius() {
return agent_radius;
}
void NavigationMesh::set_agent_max_climb(float p_value) {
agent_max_climb = p_value;
}
float NavigationMesh::get_agent_max_climb() const {
return agent_max_climb;
}
void NavigationMesh::set_agent_max_slope(float p_value) {
agent_max_slope = p_value;
}
float NavigationMesh::get_agent_max_slope() const {
return agent_max_slope;
}
void NavigationMesh::set_region_min_size(float p_value) {
region_min_size = p_value;
}
float NavigationMesh::get_region_min_size() const {
return region_min_size;
}
void NavigationMesh::set_region_merge_size(float p_value) {
region_merge_size = p_value;
}
float NavigationMesh::get_region_merge_size() const {
return region_merge_size;
}
void NavigationMesh::set_edge_max_length(float p_value) {
edge_max_length = p_value;
}
float NavigationMesh::get_edge_max_length() const {
return edge_max_length;
}
void NavigationMesh::set_edge_max_error(float p_value) {
edge_max_error = p_value;
}
float NavigationMesh::get_edge_max_error() const {
return edge_max_error;
}
void NavigationMesh::set_verts_per_poly(float p_value) {
verts_per_poly = p_value;
}
float NavigationMesh::get_verts_per_poly() const {
return verts_per_poly;
}
void NavigationMesh::set_detail_sample_distance(float p_value) {
detail_sample_distance = p_value;
}
float NavigationMesh::get_detail_sample_distance() const {
return detail_sample_distance;
}
void NavigationMesh::set_detail_sample_max_error(float p_value) {
detail_sample_max_error = p_value;
}
float NavigationMesh::get_detail_sample_max_error() const {
return detail_sample_max_error;
}
void NavigationMesh::set_filter_low_hanging_obstacles(bool p_value) {
filter_low_hanging_obstacles = p_value;
}
bool NavigationMesh::get_filter_low_hanging_obstacles() const {
return filter_low_hanging_obstacles;
}
void NavigationMesh::set_filter_ledge_spans(bool p_value) {
filter_ledge_spans = p_value;
}
bool NavigationMesh::get_filter_ledge_spans() const {
return filter_ledge_spans;
}
void NavigationMesh::set_filter_walkable_low_height_spans(bool p_value) {
filter_walkable_low_height_spans = p_value;
}
bool NavigationMesh::get_filter_walkable_low_height_spans() const {
return filter_walkable_low_height_spans;
}
void NavigationMesh::set_vertices(const PoolVector<Vector3> &p_vertices) {
vertices = p_vertices;
_change_notify();
}
PoolVector<Vector3> NavigationMesh::get_vertices() const {
return vertices;
}
void NavigationMesh::_set_polygons(const Array &p_array) {
polygons.resize(p_array.size());
for (int i = 0; i < p_array.size(); i++) {
polygons.write[i].indices = p_array[i];
}
_change_notify();
}
Array NavigationMesh::_get_polygons() const {
Array ret;
ret.resize(polygons.size());
for (int i = 0; i < ret.size(); i++) {
ret[i] = polygons[i].indices;
}
return ret;
}
void NavigationMesh::add_polygon(const Vector<int> &p_polygon) {
Polygon polygon;
polygon.indices = p_polygon;
polygons.push_back(polygon);
_change_notify();
}
int NavigationMesh::get_polygon_count() const {
return polygons.size();
}
Vector<int> NavigationMesh::get_polygon(int p_idx) {
ERR_FAIL_INDEX_V(p_idx, polygons.size(), Vector<int>());
return polygons[p_idx].indices;
}
void NavigationMesh::clear_polygons() {
polygons.clear();
}
Ref<Mesh> NavigationMesh::get_debug_mesh() {
if (debug_mesh.is_valid())
return debug_mesh;
PoolVector<Vector3> vertices = get_vertices();
PoolVector<Vector3>::Read vr = vertices.read();
List<Face3> faces;
for (int i = 0; i < get_polygon_count(); i++) {
Vector<int> p = get_polygon(i);
for (int j = 2; j < p.size(); j++) {
Face3 f;
f.vertex[0] = vr[p[0]];
f.vertex[1] = vr[p[j - 1]];
f.vertex[2] = vr[p[j]];
faces.push_back(f);
}
}
Map<_EdgeKey, bool> edge_map;
PoolVector<Vector3> tmeshfaces;
tmeshfaces.resize(faces.size() * 3);
{
PoolVector<Vector3>::Write tw = tmeshfaces.write();
int tidx = 0;
for (List<Face3>::Element *E = faces.front(); E; E = E->next()) {
const Face3 &f = E->get();
for (int j = 0; j < 3; j++) {
tw[tidx++] = f.vertex[j];
_EdgeKey ek;
ek.from = f.vertex[j].snapped(Vector3(CMP_EPSILON, CMP_EPSILON, CMP_EPSILON));
ek.to = f.vertex[(j + 1) % 3].snapped(Vector3(CMP_EPSILON, CMP_EPSILON, CMP_EPSILON));
if (ek.from < ek.to)
SWAP(ek.from, ek.to);
Map<_EdgeKey, bool>::Element *F = edge_map.find(ek);
if (F) {
F->get() = false;
} else {
edge_map[ek] = true;
}
}
}
}
List<Vector3> lines;
for (Map<_EdgeKey, bool>::Element *E = edge_map.front(); E; E = E->next()) {
if (E->get()) {
lines.push_back(E->key().from);
lines.push_back(E->key().to);
}
}
PoolVector<Vector3> varr;
varr.resize(lines.size());
{
PoolVector<Vector3>::Write w = varr.write();
int idx = 0;
for (List<Vector3>::Element *E = lines.front(); E; E = E->next()) {
w[idx++] = E->get();
}
}
debug_mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
Array arr;
arr.resize(Mesh::ARRAY_MAX);
arr[Mesh::ARRAY_VERTEX] = varr;
debug_mesh->add_surface_from_arrays(Mesh::PRIMITIVE_LINES, arr);
return debug_mesh;
}
void NavigationMesh::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_sample_partition_type", "sample_partition_type"), &NavigationMesh::set_sample_partition_type);
ClassDB::bind_method(D_METHOD("get_sample_partition_type"), &NavigationMesh::get_sample_partition_type);
ClassDB::bind_method(D_METHOD("set_parsed_geometry_type", "geometry_type"), &NavigationMesh::set_parsed_geometry_type);
ClassDB::bind_method(D_METHOD("get_parsed_geometry_type"), &NavigationMesh::get_parsed_geometry_type);
ClassDB::bind_method(D_METHOD("set_collision_mask", "mask"), &NavigationMesh::set_collision_mask);
ClassDB::bind_method(D_METHOD("get_collision_mask"), &NavigationMesh::get_collision_mask);
ClassDB::bind_method(D_METHOD("set_collision_mask_bit", "bit", "value"), &NavigationMesh::set_collision_mask_bit);
ClassDB::bind_method(D_METHOD("get_collision_mask_bit", "bit"), &NavigationMesh::get_collision_mask_bit);
ClassDB::bind_method(D_METHOD("set_cell_size", "cell_size"), &NavigationMesh::set_cell_size);
ClassDB::bind_method(D_METHOD("get_cell_size"), &NavigationMesh::get_cell_size);
ClassDB::bind_method(D_METHOD("set_cell_height", "cell_height"), &NavigationMesh::set_cell_height);
ClassDB::bind_method(D_METHOD("get_cell_height"), &NavigationMesh::get_cell_height);
ClassDB::bind_method(D_METHOD("set_agent_height", "agent_height"), &NavigationMesh::set_agent_height);
ClassDB::bind_method(D_METHOD("get_agent_height"), &NavigationMesh::get_agent_height);
ClassDB::bind_method(D_METHOD("set_agent_radius", "agent_radius"), &NavigationMesh::set_agent_radius);
ClassDB::bind_method(D_METHOD("get_agent_radius"), &NavigationMesh::get_agent_radius);
ClassDB::bind_method(D_METHOD("set_agent_max_climb", "agent_max_climb"), &NavigationMesh::set_agent_max_climb);
ClassDB::bind_method(D_METHOD("get_agent_max_climb"), &NavigationMesh::get_agent_max_climb);
ClassDB::bind_method(D_METHOD("set_agent_max_slope", "agent_max_slope"), &NavigationMesh::set_agent_max_slope);
ClassDB::bind_method(D_METHOD("get_agent_max_slope"), &NavigationMesh::get_agent_max_slope);
ClassDB::bind_method(D_METHOD("set_region_min_size", "region_min_size"), &NavigationMesh::set_region_min_size);
ClassDB::bind_method(D_METHOD("get_region_min_size"), &NavigationMesh::get_region_min_size);
ClassDB::bind_method(D_METHOD("set_region_merge_size", "region_merge_size"), &NavigationMesh::set_region_merge_size);
ClassDB::bind_method(D_METHOD("get_region_merge_size"), &NavigationMesh::get_region_merge_size);
ClassDB::bind_method(D_METHOD("set_edge_max_length", "edge_max_length"), &NavigationMesh::set_edge_max_length);
ClassDB::bind_method(D_METHOD("get_edge_max_length"), &NavigationMesh::get_edge_max_length);
ClassDB::bind_method(D_METHOD("set_edge_max_error", "edge_max_error"), &NavigationMesh::set_edge_max_error);
ClassDB::bind_method(D_METHOD("get_edge_max_error"), &NavigationMesh::get_edge_max_error);
ClassDB::bind_method(D_METHOD("set_verts_per_poly", "verts_per_poly"), &NavigationMesh::set_verts_per_poly);
ClassDB::bind_method(D_METHOD("get_verts_per_poly"), &NavigationMesh::get_verts_per_poly);
ClassDB::bind_method(D_METHOD("set_detail_sample_distance", "detail_sample_dist"), &NavigationMesh::set_detail_sample_distance);
ClassDB::bind_method(D_METHOD("get_detail_sample_distance"), &NavigationMesh::get_detail_sample_distance);
ClassDB::bind_method(D_METHOD("set_detail_sample_max_error", "detail_sample_max_error"), &NavigationMesh::set_detail_sample_max_error);
ClassDB::bind_method(D_METHOD("get_detail_sample_max_error"), &NavigationMesh::get_detail_sample_max_error);
ClassDB::bind_method(D_METHOD("set_filter_low_hanging_obstacles", "filter_low_hanging_obstacles"), &NavigationMesh::set_filter_low_hanging_obstacles);
ClassDB::bind_method(D_METHOD("get_filter_low_hanging_obstacles"), &NavigationMesh::get_filter_low_hanging_obstacles);
ClassDB::bind_method(D_METHOD("set_filter_ledge_spans", "filter_ledge_spans"), &NavigationMesh::set_filter_ledge_spans);
ClassDB::bind_method(D_METHOD("get_filter_ledge_spans"), &NavigationMesh::get_filter_ledge_spans);
ClassDB::bind_method(D_METHOD("set_filter_walkable_low_height_spans", "filter_walkable_low_height_spans"), &NavigationMesh::set_filter_walkable_low_height_spans);
ClassDB::bind_method(D_METHOD("get_filter_walkable_low_height_spans"), &NavigationMesh::get_filter_walkable_low_height_spans);
ClassDB::bind_method(D_METHOD("set_vertices", "vertices"), &NavigationMesh::set_vertices);
ClassDB::bind_method(D_METHOD("get_vertices"), &NavigationMesh::get_vertices);
ClassDB::bind_method(D_METHOD("add_polygon", "polygon"), &NavigationMesh::add_polygon);
ClassDB::bind_method(D_METHOD("get_polygon_count"), &NavigationMesh::get_polygon_count);
ClassDB::bind_method(D_METHOD("get_polygon", "idx"), &NavigationMesh::get_polygon);
ClassDB::bind_method(D_METHOD("clear_polygons"), &NavigationMesh::clear_polygons);
ClassDB::bind_method(D_METHOD("create_from_mesh", "mesh"), &NavigationMesh::create_from_mesh);
ClassDB::bind_method(D_METHOD("_set_polygons", "polygons"), &NavigationMesh::_set_polygons);
ClassDB::bind_method(D_METHOD("_get_polygons"), &NavigationMesh::_get_polygons);
BIND_CONSTANT(SAMPLE_PARTITION_WATERSHED);
BIND_CONSTANT(SAMPLE_PARTITION_MONOTONE);
BIND_CONSTANT(SAMPLE_PARTITION_LAYERS);
BIND_CONSTANT(PARSED_GEOMETRY_MESH_INSTANCES);
BIND_CONSTANT(PARSED_GEOMETRY_STATIC_COLLIDERS);
BIND_CONSTANT(PARSED_GEOMETRY_BOTH);
ADD_PROPERTY(PropertyInfo(Variant::POOL_VECTOR3_ARRAY, "vertices", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL), "set_vertices", "get_vertices");
ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "polygons", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL), "_set_polygons", "_get_polygons");
ADD_PROPERTY(PropertyInfo(Variant::INT, "sample_partition_type/sample_partition_type", PROPERTY_HINT_ENUM, "Watershed,Monotone,Layers"), "set_sample_partition_type", "get_sample_partition_type");
ADD_PROPERTY(PropertyInfo(Variant::INT, "geometry/parsed_geometry_type", PROPERTY_HINT_ENUM, "Mesh Instances,Static Colliders,Both"), "set_parsed_geometry_type", "get_parsed_geometry_type");
ADD_PROPERTY(PropertyInfo(Variant::INT, "geometry/collision_mask", PROPERTY_HINT_LAYERS_3D_PHYSICS), "set_collision_mask", "get_collision_mask");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "cell/size", PROPERTY_HINT_RANGE, "0.1,1.0,0.01,or_greater"), "set_cell_size", "get_cell_size");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "cell/height", PROPERTY_HINT_RANGE, "0.1,1.0,0.01,or_greater"), "set_cell_height", "get_cell_height");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "agent/height", PROPERTY_HINT_RANGE, "0.1,5.0,0.01,or_greater"), "set_agent_height", "get_agent_height");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "agent/radius", PROPERTY_HINT_RANGE, "0.1,5.0,0.01,or_greater"), "set_agent_radius", "get_agent_radius");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "agent/max_climb", PROPERTY_HINT_RANGE, "0.1,5.0,0.01,or_greater"), "set_agent_max_climb", "get_agent_max_climb");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "agent/max_slope", PROPERTY_HINT_RANGE, "0.0,90.0,0.1"), "set_agent_max_slope", "get_agent_max_slope");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "region/min_size", PROPERTY_HINT_RANGE, "0.0,150.0,0.01,or_greater"), "set_region_min_size", "get_region_min_size");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "region/merge_size", PROPERTY_HINT_RANGE, "0.0,150.0,0.01,or_greater"), "set_region_merge_size", "get_region_merge_size");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "edge/max_length", PROPERTY_HINT_RANGE, "0.0,50.0,0.01,or_greater"), "set_edge_max_length", "get_edge_max_length");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "edge/max_error", PROPERTY_HINT_RANGE, "0.1,3.0,0.01,or_greater"), "set_edge_max_error", "get_edge_max_error");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "polygon/verts_per_poly", PROPERTY_HINT_RANGE, "3.0,12.0,1.0,or_greater"), "set_verts_per_poly", "get_verts_per_poly");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "detail/sample_distance", PROPERTY_HINT_RANGE, "0.0,16.0,0.01,or_greater"), "set_detail_sample_distance", "get_detail_sample_distance");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "detail/sample_max_error", PROPERTY_HINT_RANGE, "0.0,16.0,0.01,or_greater"), "set_detail_sample_max_error", "get_detail_sample_max_error");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "filter/low_hanging_obstacles"), "set_filter_low_hanging_obstacles", "get_filter_low_hanging_obstacles");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "filter/ledge_spans"), "set_filter_ledge_spans", "get_filter_ledge_spans");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "filter/filter_walkable_low_height_spans"), "set_filter_walkable_low_height_spans", "get_filter_walkable_low_height_spans");
}
void NavigationMesh::_validate_property(PropertyInfo &property) const {
if (property.name == "geometry/collision_mask") {
if (parsed_geometry_type == PARSED_GEOMETRY_MESH_INSTANCES) {
property.usage = 0;
return;
}
}
}
NavigationMesh::NavigationMesh() {
cell_size = 0.3f;
cell_height = 0.2f;
agent_height = 2.0f;
agent_radius = 0.6f;
agent_max_climb = 0.9f;
agent_max_slope = 45.0f;
region_min_size = 8.0f;
region_merge_size = 20.0f;
edge_max_length = 12.0f;
edge_max_error = 1.3f;
verts_per_poly = 6.0f;
detail_sample_distance = 6.0f;
detail_sample_max_error = 1.0f;
partition_type = SAMPLE_PARTITION_WATERSHED;
parsed_geometry_type = PARSED_GEOMETRY_MESH_INSTANCES;
collision_mask = 0xFFFFFFFF;
filter_low_hanging_obstacles = false;
filter_ledge_spans = false;
filter_walkable_low_height_spans = false;
}
void NavigationMeshInstance::set_enabled(bool p_enabled) {
if (enabled == p_enabled)
return;
enabled = p_enabled;
if (!is_inside_tree())
return;
if (!enabled) {
if (nav_id != -1) {
navigation->navmesh_remove(nav_id);
nav_id = -1;
}
} else {
if (navigation) {
if (navmesh.is_valid()) {
nav_id = navigation->navmesh_add(navmesh, get_relative_transform(navigation), this);
}
}
}
if (debug_view) {
MeshInstance *dm = Object::cast_to<MeshInstance>(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 NavigationMeshInstance::is_enabled() const {
return enabled;
}
/////////////////////////////
void NavigationMeshInstance::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_ENTER_TREE: {
Spatial *c = this;
while (c) {
navigation = Object::cast_to<Navigation>(c);
if (navigation) {
if (enabled && navmesh.is_valid()) {
nav_id = navigation->navmesh_add(navmesh, get_relative_transform(navigation), this);
}
break;
}
c = c->get_parent_spatial();
}
if (navmesh.is_valid() && get_tree()->is_debugging_navigation_hint()) {
MeshInstance *dm = memnew(MeshInstance);
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: {
if (navigation && nav_id != -1) {
navigation->navmesh_set_transform(nav_id, get_relative_transform(navigation));
}
} break;
case NOTIFICATION_EXIT_TREE: {
if (navigation) {
if (nav_id != -1) {
navigation->navmesh_remove(nav_id);
nav_id = -1;
}
}
if (debug_view) {
debug_view->queue_delete();
debug_view = NULL;
}
navigation = NULL;
} break;
}
}
void NavigationMeshInstance::set_navigation_mesh(const Ref<NavigationMesh> &p_navmesh) {
if (p_navmesh == navmesh)
return;
if (navigation && nav_id != -1) {
navigation->navmesh_remove(nav_id);
nav_id = -1;
}
if (navmesh.is_valid()) {
navmesh->remove_change_receptor(this);
}
navmesh = p_navmesh;
if (navmesh.is_valid()) {
navmesh->add_change_receptor(this);
}
if (navigation && navmesh.is_valid() && enabled) {
nav_id = navigation->navmesh_add(navmesh, get_relative_transform(navigation), this);
}
if (debug_view && navmesh.is_valid()) {
Object::cast_to<MeshInstance>(debug_view)->set_mesh(navmesh->get_debug_mesh());
}
update_gizmo();
update_configuration_warning();
}
Ref<NavigationMesh> NavigationMeshInstance::get_navigation_mesh() const {
return navmesh;
}
String NavigationMeshInstance::get_configuration_warning() const {
if (!is_visible_in_tree() || !is_inside_tree())
return String();
if (!navmesh.is_valid()) {
return TTR("A NavigationMesh resource must be set or created for this node to work.");
}
const Spatial *c = this;
while (c) {
if (Object::cast_to<Navigation>(c))
return String();
c = Object::cast_to<Spatial>(c->get_parent());
}
return TTR("NavigationMeshInstance must be a child or grandchild to a Navigation node. It only provides navigation data.");
}
void NavigationMeshInstance::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_navigation_mesh", "navmesh"), &NavigationMeshInstance::set_navigation_mesh);
ClassDB::bind_method(D_METHOD("get_navigation_mesh"), &NavigationMeshInstance::get_navigation_mesh);
ClassDB::bind_method(D_METHOD("set_enabled", "enabled"), &NavigationMeshInstance::set_enabled);
ClassDB::bind_method(D_METHOD("is_enabled"), &NavigationMeshInstance::is_enabled);
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");
}
void NavigationMeshInstance::_changed_callback(Object *p_changed, const char *p_prop) {
update_gizmo();
update_configuration_warning();
}
NavigationMeshInstance::NavigationMeshInstance() {
debug_view = NULL;
navigation = NULL;
nav_id = -1;
enabled = true;
set_notify_transform(true);
}
NavigationMeshInstance::~NavigationMeshInstance() {
if (navmesh.is_valid())
navmesh->remove_change_receptor(this);
}
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