pandemonium_engine/scene/2d/navigation_polygon.cpp
smix8 1d428ac1c9 Update NavigationPolygonInstance when polygons of NavigationPolygon change
Updates NavigationPolygonInstance polygons on the NavigationServer2D when the NavigationPolygon Resource emits its changed signal due to e.g. polygons altered by script.
2022-07-27 19:45:42 +02:00

562 lines
17 KiB
C++

/*************************************************************************/
/* navigation_polygon.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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_polygon.h"
#include "core/core_string_names.h"
#include "core/engine.h"
#include "core/os/mutex.h"
#include "navigation_2d.h"
#include "scene/resources/navigation_mesh.h"
#include "servers/navigation_2d_server.h"
#include "thirdparty/misc/triangulator.h"
#ifdef TOOLS_ENABLED
Rect2 NavigationPolygon::_edit_get_rect() const {
if (rect_cache_dirty) {
item_rect = Rect2();
bool first = true;
for (int i = 0; i < outlines.size(); i++) {
const PoolVector<Vector2> &outline = outlines[i];
const int outline_size = outline.size();
if (outline_size < 3) {
continue;
}
PoolVector<Vector2>::Read p = outline.read();
for (int j = 0; j < outline_size; j++) {
if (first) {
item_rect = Rect2(p[j], Vector2(0, 0));
first = false;
} else {
item_rect.expand_to(p[j]);
}
}
}
rect_cache_dirty = false;
}
return item_rect;
}
bool NavigationPolygon::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
for (int i = 0; i < outlines.size(); i++) {
const PoolVector<Vector2> &outline = outlines[i];
const int outline_size = outline.size();
if (outline_size < 3) {
continue;
}
if (Geometry::is_point_in_polygon(p_point, Variant(outline))) {
return true;
}
}
return false;
}
#endif
void NavigationPolygon::set_vertices(const PoolVector<Vector2> &p_vertices) {
{
MutexLock lock(navmesh_generation);
navmesh.unref();
}
vertices = p_vertices;
rect_cache_dirty = true;
}
PoolVector<Vector2> NavigationPolygon::get_vertices() const {
return vertices;
}
void NavigationPolygon::_set_polygons(const Array &p_array) {
{
MutexLock lock(navmesh_generation);
navmesh.unref();
}
polygons.resize(p_array.size());
for (int i = 0; i < p_array.size(); i++) {
polygons.write[i].indices = p_array[i];
}
}
Array NavigationPolygon::_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 NavigationPolygon::_set_outlines(const Array &p_array) {
outlines.resize(p_array.size());
for (int i = 0; i < p_array.size(); i++) {
outlines.write[i] = p_array[i];
}
rect_cache_dirty = true;
}
Array NavigationPolygon::_get_outlines() const {
Array ret;
ret.resize(outlines.size());
for (int i = 0; i < ret.size(); i++) {
ret[i] = outlines[i];
}
return ret;
}
void NavigationPolygon::add_polygon(const Vector<int> &p_polygon) {
Polygon polygon;
polygon.indices = p_polygon;
polygons.push_back(polygon);
{
MutexLock lock(navmesh_generation);
navmesh.unref();
}
}
void NavigationPolygon::add_outline_at_index(const PoolVector<Vector2> &p_outline, int p_index) {
outlines.insert(p_index, p_outline);
rect_cache_dirty = true;
}
int NavigationPolygon::get_polygon_count() const {
return polygons.size();
}
Vector<int> NavigationPolygon::get_polygon(int p_idx) {
ERR_FAIL_INDEX_V(p_idx, polygons.size(), Vector<int>());
return polygons[p_idx].indices;
}
void NavigationPolygon::clear_polygons() {
polygons.clear();
{
MutexLock lock(navmesh_generation);
navmesh.unref();
}
}
Ref<NavigationMesh> NavigationPolygon::get_mesh() {
MutexLock lock(navmesh_generation);
if (navmesh.is_null()) {
navmesh.instance();
PoolVector<Vector3> verts;
{
verts.resize(get_vertices().size());
PoolVector<Vector3>::Write w = verts.write();
PoolVector<Vector2>::Read r = get_vertices().read();
for (int i(0); i < get_vertices().size(); i++) {
w[i] = Vector3(r[i].x, 0.0, r[i].y);
}
}
navmesh->set_vertices(verts);
for (int i(0); i < get_polygon_count(); i++) {
navmesh->add_polygon(get_polygon(i));
}
}
return navmesh;
}
void NavigationPolygon::add_outline(const PoolVector<Vector2> &p_outline) {
outlines.push_back(p_outline);
rect_cache_dirty = true;
}
int NavigationPolygon::get_outline_count() const {
return outlines.size();
}
void NavigationPolygon::set_outline(int p_idx, const PoolVector<Vector2> &p_outline) {
ERR_FAIL_INDEX(p_idx, outlines.size());
outlines.write[p_idx] = p_outline;
rect_cache_dirty = true;
}
void NavigationPolygon::remove_outline(int p_idx) {
ERR_FAIL_INDEX(p_idx, outlines.size());
outlines.remove(p_idx);
rect_cache_dirty = true;
}
PoolVector<Vector2> NavigationPolygon::get_outline(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, outlines.size(), PoolVector<Vector2>());
return outlines[p_idx];
}
void NavigationPolygon::clear_outlines() {
outlines.clear();
rect_cache_dirty = true;
}
void NavigationPolygon::make_polygons_from_outlines() {
{
MutexLock lock(navmesh_generation);
navmesh.unref();
}
List<TriangulatorPoly> in_poly, out_poly;
Vector2 outside_point(-1e10, -1e10);
for (int i = 0; i < outlines.size(); i++) {
PoolVector<Vector2> ol = outlines[i];
int olsize = ol.size();
if (olsize < 3) {
continue;
}
PoolVector<Vector2>::Read r = ol.read();
for (int j = 0; j < olsize; j++) {
outside_point.x = MAX(r[j].x, outside_point.x);
outside_point.y = MAX(r[j].y, outside_point.y);
}
}
outside_point += Vector2(0.7239784, 0.819238); //avoid precision issues
for (int i = 0; i < outlines.size(); i++) {
PoolVector<Vector2> ol = outlines[i];
int olsize = ol.size();
if (olsize < 3) {
continue;
}
PoolVector<Vector2>::Read r = ol.read();
int interscount = 0;
//test if this is an outer outline
for (int k = 0; k < outlines.size(); k++) {
if (i == k) {
continue; //no self intersect
}
PoolVector<Vector2> ol2 = outlines[k];
int olsize2 = ol2.size();
if (olsize2 < 3) {
continue;
}
PoolVector<Vector2>::Read r2 = ol2.read();
for (int l = 0; l < olsize2; l++) {
if (Geometry::segment_intersects_segment_2d(r[0], outside_point, r2[l], r2[(l + 1) % olsize2], nullptr)) {
interscount++;
}
}
}
bool outer = (interscount % 2) == 0;
TriangulatorPoly tp;
tp.Init(olsize);
for (int j = 0; j < olsize; j++) {
tp[j] = r[j];
}
if (outer) {
tp.SetOrientation(TRIANGULATOR_CCW);
} else {
tp.SetOrientation(TRIANGULATOR_CW);
tp.SetHole(true);
}
in_poly.push_back(tp);
}
TriangulatorPartition tpart;
if (tpart.ConvexPartition_HM(&in_poly, &out_poly) == 0) { //failed!
ERR_PRINT("NavigationPolygon: Convex partition failed!");
return;
}
polygons.clear();
vertices.resize(0);
Map<Vector2, int> points;
for (List<TriangulatorPoly>::Element *I = out_poly.front(); I; I = I->next()) {
TriangulatorPoly &tp = I->get();
struct Polygon p;
for (int64_t i = 0; i < tp.GetNumPoints(); i++) {
Map<Vector2, int>::Element *E = points.find(tp[i]);
if (!E) {
E = points.insert(tp[i], vertices.size());
vertices.push_back(tp[i]);
}
p.indices.push_back(E->get());
}
polygons.push_back(p);
}
emit_signal(CoreStringNames::get_singleton()->changed);
}
void NavigationPolygon::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_vertices", "vertices"), &NavigationPolygon::set_vertices);
ClassDB::bind_method(D_METHOD("get_vertices"), &NavigationPolygon::get_vertices);
ClassDB::bind_method(D_METHOD("add_polygon", "polygon"), &NavigationPolygon::add_polygon);
ClassDB::bind_method(D_METHOD("get_polygon_count"), &NavigationPolygon::get_polygon_count);
ClassDB::bind_method(D_METHOD("get_polygon", "idx"), &NavigationPolygon::get_polygon);
ClassDB::bind_method(D_METHOD("clear_polygons"), &NavigationPolygon::clear_polygons);
ClassDB::bind_method(D_METHOD("add_outline", "outline"), &NavigationPolygon::add_outline);
ClassDB::bind_method(D_METHOD("add_outline_at_index", "outline", "index"), &NavigationPolygon::add_outline_at_index);
ClassDB::bind_method(D_METHOD("get_outline_count"), &NavigationPolygon::get_outline_count);
ClassDB::bind_method(D_METHOD("set_outline", "idx", "outline"), &NavigationPolygon::set_outline);
ClassDB::bind_method(D_METHOD("get_outline", "idx"), &NavigationPolygon::get_outline);
ClassDB::bind_method(D_METHOD("remove_outline", "idx"), &NavigationPolygon::remove_outline);
ClassDB::bind_method(D_METHOD("clear_outlines"), &NavigationPolygon::clear_outlines);
ClassDB::bind_method(D_METHOD("make_polygons_from_outlines"), &NavigationPolygon::make_polygons_from_outlines);
ClassDB::bind_method(D_METHOD("_set_polygons", "polygons"), &NavigationPolygon::_set_polygons);
ClassDB::bind_method(D_METHOD("_get_polygons"), &NavigationPolygon::_get_polygons);
ClassDB::bind_method(D_METHOD("_set_outlines", "outlines"), &NavigationPolygon::_set_outlines);
ClassDB::bind_method(D_METHOD("_get_outlines"), &NavigationPolygon::_get_outlines);
ADD_PROPERTY(PropertyInfo(Variant::POOL_VECTOR2_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::ARRAY, "outlines", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL), "_set_outlines", "_get_outlines");
}
NavigationPolygon::NavigationPolygon() :
rect_cache_dirty(true) {
}
NavigationPolygon::~NavigationPolygon() {
}
void NavigationPolygonInstance::set_enabled(bool p_enabled) {
if (enabled == p_enabled) {
return;
}
enabled = p_enabled;
if (!is_inside_tree()) {
return;
}
if (!enabled) {
Navigation2DServer::get_singleton()->region_set_map(region, RID());
} else {
if (navigation) {
Navigation2DServer::get_singleton()->region_set_map(region, navigation->get_rid());
}
}
if (Engine::get_singleton()->is_editor_hint() || get_tree()->is_debugging_navigation_hint()) {
update();
}
}
bool NavigationPolygonInstance::is_enabled() const {
return enabled;
}
RID NavigationPolygonInstance::get_region_rid() const {
return region;
}
/////////////////////////////
#ifdef TOOLS_ENABLED
Rect2 NavigationPolygonInstance::_edit_get_rect() const {
return navpoly.is_valid() ? navpoly->_edit_get_rect() : Rect2();
}
bool NavigationPolygonInstance::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
return navpoly.is_valid() ? navpoly->_edit_is_selected_on_click(p_point, p_tolerance) : false;
}
#endif
void NavigationPolygonInstance::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_ENTER_TREE: {
Node2D *c = this;
while (c) {
navigation = Object::cast_to<Navigation2D>(c);
if (navigation) {
if (enabled) {
Navigation2DServer::get_singleton()->region_set_map(region, navigation->get_rid());
}
break;
}
c = Object::cast_to<Node2D>(c->get_parent());
}
} break;
case NOTIFICATION_TRANSFORM_CHANGED: {
Navigation2DServer::get_singleton()->region_set_transform(region, get_global_transform());
} break;
case NOTIFICATION_EXIT_TREE: {
if (navigation) {
Navigation2DServer::get_singleton()->region_set_map(region, RID());
}
navigation = nullptr;
} break;
case NOTIFICATION_DRAW: {
if (is_inside_tree() && (Engine::get_singleton()->is_editor_hint() || get_tree()->is_debugging_navigation_hint()) && navpoly.is_valid()) {
PoolVector<Vector2> verts = navpoly->get_vertices();
int vsize = verts.size();
if (vsize < 3) {
return;
}
Color color;
if (enabled) {
color = get_tree()->get_debug_navigation_color();
} else {
color = get_tree()->get_debug_navigation_disabled_color();
}
Vector<Color> colors;
Vector<Vector2> vertices;
vertices.resize(vsize);
colors.resize(vsize);
{
PoolVector<Vector2>::Read vr = verts.read();
for (int i = 0; i < vsize; i++) {
vertices.write[i] = vr[i];
colors.write[i] = color;
}
}
Vector<int> indices;
for (int i = 0; i < navpoly->get_polygon_count(); i++) {
Vector<int> polygon = navpoly->get_polygon(i);
for (int j = 2; j < polygon.size(); j++) {
int kofs[3] = { 0, j - 1, j };
for (int k = 0; k < 3; k++) {
int idx = polygon[kofs[k]];
ERR_FAIL_INDEX(idx, vsize);
indices.push_back(idx);
}
}
}
VS::get_singleton()->canvas_item_add_triangle_array(get_canvas_item(), indices, vertices, colors);
}
} break;
}
}
void NavigationPolygonInstance::set_navigation_polygon(const Ref<NavigationPolygon> &p_navpoly) {
if (p_navpoly == navpoly) {
return;
}
if (navpoly.is_valid()) {
navpoly->disconnect(CoreStringNames::get_singleton()->changed, this, "_navpoly_changed");
}
navpoly = p_navpoly;
Navigation2DServer::get_singleton()->region_set_navpoly(region, p_navpoly);
if (navpoly.is_valid()) {
navpoly->connect(CoreStringNames::get_singleton()->changed, this, "_navpoly_changed");
}
_navpoly_changed();
_change_notify("navpoly");
update_configuration_warning();
}
Ref<NavigationPolygon> NavigationPolygonInstance::get_navigation_polygon() const {
return navpoly;
}
void NavigationPolygonInstance::_navpoly_changed() {
if (is_inside_tree() && (Engine::get_singleton()->is_editor_hint() || get_tree()->is_debugging_navigation_hint())) {
update();
}
if (navpoly.is_valid()) {
Navigation2DServer::get_singleton()->region_set_navpoly(region, navpoly);
}
}
String NavigationPolygonInstance::get_configuration_warning() const {
if (!is_visible_in_tree() || !is_inside_tree()) {
return String();
}
String warning = Node2D::get_configuration_warning();
if (!navpoly.is_valid()) {
if (warning != String()) {
warning += "\n\n";
}
warning += TTR("A NavigationPolygon resource must be set or created for this node to work. Please set a property or draw a polygon.");
}
const Node2D *c = this;
while (c) {
if (Object::cast_to<Navigation2D>(c)) {
return warning;
}
c = Object::cast_to<Node2D>(c->get_parent());
}
if (warning != String()) {
warning += "\n\n";
}
warning += TTR("NavigationPolygonInstance must be a child or grandchild to a Navigation2D node. It only provides navigation data.");
return warning;
}
void NavigationPolygonInstance::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_navigation_polygon", "navpoly"), &NavigationPolygonInstance::set_navigation_polygon);
ClassDB::bind_method(D_METHOD("get_navigation_polygon"), &NavigationPolygonInstance::get_navigation_polygon);
ClassDB::bind_method(D_METHOD("set_enabled", "enabled"), &NavigationPolygonInstance::set_enabled);
ClassDB::bind_method(D_METHOD("is_enabled"), &NavigationPolygonInstance::is_enabled);
ClassDB::bind_method(D_METHOD("get_region_rid"), &NavigationPolygonInstance::get_region_rid);
ClassDB::bind_method(D_METHOD("_navpoly_changed"), &NavigationPolygonInstance::_navpoly_changed);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "navpoly", PROPERTY_HINT_RESOURCE_TYPE, "NavigationPolygon"), "set_navigation_polygon", "get_navigation_polygon");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "enabled"), "set_enabled", "is_enabled");
}
NavigationPolygonInstance::NavigationPolygonInstance() {
enabled = true;
set_notify_transform(true);
region = Navigation2DServer::get_singleton()->region_create();
navigation = nullptr;
}
NavigationPolygonInstance::~NavigationPolygonInstance() {
Navigation2DServer::get_singleton()->free(region);
}