395 lines
11 KiB
C++
395 lines
11 KiB
C++
/*************************************************************************/
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/* navigation_mesh.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 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_mesh.h"
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#include "mesh_instance.h"
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#include "navigation.h"
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void NavigationMesh::create_from_mesh(const Ref<Mesh> &p_mesh) {
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vertices = PoolVector<Vector3>();
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clear_polygons();
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for (int i = 0; i < p_mesh->get_surface_count(); i++) {
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if (p_mesh->surface_get_primitive_type(i) != Mesh::PRIMITIVE_TRIANGLES)
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continue;
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Array arr = p_mesh->surface_get_arrays(i);
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PoolVector<Vector3> varr = arr[Mesh::ARRAY_VERTEX];
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PoolVector<int> iarr = arr[Mesh::ARRAY_INDEX];
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if (varr.size() == 0 || iarr.size() == 0)
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continue;
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int from = vertices.size();
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vertices.append_array(varr);
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int rlen = iarr.size();
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PoolVector<int>::Read r = iarr.read();
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for (int j = 0; j < rlen; j += 3) {
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Vector<int> vi;
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vi.resize(3);
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vi[0] = r[j + 0] + from;
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vi[1] = r[j + 1] + from;
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vi[2] = r[j + 2] + from;
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add_polygon(vi);
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}
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}
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}
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void NavigationMesh::set_vertices(const PoolVector<Vector3> &p_vertices) {
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vertices = p_vertices;
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}
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PoolVector<Vector3> NavigationMesh::get_vertices() const {
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return vertices;
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}
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void NavigationMesh::_set_polygons(const Array &p_array) {
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polygons.resize(p_array.size());
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for (int i = 0; i < p_array.size(); i++) {
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polygons[i].indices = p_array[i];
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}
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}
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Array NavigationMesh::_get_polygons() const {
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Array ret;
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ret.resize(polygons.size());
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for (int i = 0; i < ret.size(); i++) {
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ret[i] = polygons[i].indices;
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}
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return ret;
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}
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void NavigationMesh::add_polygon(const Vector<int> &p_polygon) {
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Polygon polygon;
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polygon.indices = p_polygon;
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polygons.push_back(polygon);
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}
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int NavigationMesh::get_polygon_count() const {
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return polygons.size();
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}
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Vector<int> NavigationMesh::get_polygon(int p_idx) {
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ERR_FAIL_INDEX_V(p_idx, polygons.size(), Vector<int>());
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return polygons[p_idx].indices;
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}
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void NavigationMesh::clear_polygons() {
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polygons.clear();
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}
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Ref<Mesh> NavigationMesh::get_debug_mesh() {
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if (debug_mesh.is_valid())
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return debug_mesh;
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PoolVector<Vector3> vertices = get_vertices();
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PoolVector<Vector3>::Read vr = vertices.read();
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List<Face3> faces;
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for (int i = 0; i < get_polygon_count(); i++) {
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Vector<int> p = get_polygon(i);
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for (int j = 2; j < p.size(); j++) {
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Face3 f;
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f.vertex[0] = vr[p[0]];
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f.vertex[1] = vr[p[j - 1]];
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f.vertex[2] = vr[p[j]];
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faces.push_back(f);
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}
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}
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Map<_EdgeKey, bool> edge_map;
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PoolVector<Vector3> tmeshfaces;
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tmeshfaces.resize(faces.size() * 3);
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{
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PoolVector<Vector3>::Write tw = tmeshfaces.write();
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int tidx = 0;
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for (List<Face3>::Element *E = faces.front(); E; E = E->next()) {
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const Face3 &f = E->get();
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for (int j = 0; j < 3; j++) {
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tw[tidx++] = f.vertex[j];
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_EdgeKey ek;
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ek.from = f.vertex[j].snapped(Vector3(CMP_EPSILON, CMP_EPSILON, CMP_EPSILON));
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ek.to = f.vertex[(j + 1) % 3].snapped(Vector3(CMP_EPSILON, CMP_EPSILON, CMP_EPSILON));
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if (ek.from < ek.to)
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SWAP(ek.from, ek.to);
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Map<_EdgeKey, bool>::Element *E = edge_map.find(ek);
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if (E) {
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E->get() = false;
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} else {
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edge_map[ek] = true;
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}
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}
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}
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}
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List<Vector3> lines;
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for (Map<_EdgeKey, bool>::Element *E = edge_map.front(); E; E = E->next()) {
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if (E->get()) {
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lines.push_back(E->key().from);
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lines.push_back(E->key().to);
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}
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}
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PoolVector<Vector3> varr;
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varr.resize(lines.size());
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{
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PoolVector<Vector3>::Write w = varr.write();
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int idx = 0;
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for (List<Vector3>::Element *E = lines.front(); E; E = E->next()) {
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w[idx++] = E->get();
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}
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}
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debug_mesh = Ref<ArrayMesh>(memnew(ArrayMesh));
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Array arr;
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arr.resize(Mesh::ARRAY_MAX);
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arr[Mesh::ARRAY_VERTEX] = varr;
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debug_mesh->add_surface_from_arrays(Mesh::PRIMITIVE_LINES, arr);
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return debug_mesh;
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}
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void NavigationMesh::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_vertices", "vertices"), &NavigationMesh::set_vertices);
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ClassDB::bind_method(D_METHOD("get_vertices"), &NavigationMesh::get_vertices);
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ClassDB::bind_method(D_METHOD("add_polygon", "polygon"), &NavigationMesh::add_polygon);
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ClassDB::bind_method(D_METHOD("get_polygon_count"), &NavigationMesh::get_polygon_count);
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ClassDB::bind_method(D_METHOD("get_polygon", "idx"), &NavigationMesh::get_polygon);
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ClassDB::bind_method(D_METHOD("clear_polygons"), &NavigationMesh::clear_polygons);
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ClassDB::bind_method(D_METHOD("_set_polygons", "polygons"), &NavigationMesh::_set_polygons);
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ClassDB::bind_method(D_METHOD("_get_polygons"), &NavigationMesh::_get_polygons);
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ADD_PROPERTY(PropertyInfo(Variant::POOL_VECTOR3_ARRAY, "vertices", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "set_vertices", "get_vertices");
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ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "polygons", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "_set_polygons", "_get_polygons");
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}
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NavigationMesh::NavigationMesh() {
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}
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void NavigationMeshInstance::set_enabled(bool p_enabled) {
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if (enabled == p_enabled)
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return;
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enabled = p_enabled;
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if (!is_inside_tree())
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return;
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if (!enabled) {
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if (nav_id != -1) {
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navigation->navmesh_remove(nav_id);
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nav_id = -1;
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}
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} else {
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if (navigation) {
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if (navmesh.is_valid()) {
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nav_id = navigation->navmesh_create(navmesh, get_relative_transform(navigation), this);
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}
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}
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}
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if (debug_view) {
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MeshInstance *dm = debug_view->cast_to<MeshInstance>();
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if (is_enabled()) {
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dm->set_material_override(get_tree()->get_debug_navigation_material());
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} else {
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dm->set_material_override(get_tree()->get_debug_navigation_disabled_material());
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}
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}
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update_gizmo();
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}
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bool NavigationMeshInstance::is_enabled() const {
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return enabled;
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}
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/////////////////////////////
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void NavigationMeshInstance::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_ENTER_TREE: {
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Spatial *c = this;
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while (c) {
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navigation = c->cast_to<Navigation>();
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if (navigation) {
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if (enabled && navmesh.is_valid()) {
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nav_id = navigation->navmesh_create(navmesh, get_relative_transform(navigation), this);
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}
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break;
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}
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c = c->get_parent_spatial();
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}
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if (navmesh.is_valid() && get_tree()->is_debugging_navigation_hint()) {
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MeshInstance *dm = memnew(MeshInstance);
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dm->set_mesh(navmesh->get_debug_mesh());
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if (is_enabled()) {
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dm->set_material_override(get_tree()->get_debug_navigation_material());
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} else {
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dm->set_material_override(get_tree()->get_debug_navigation_disabled_material());
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}
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add_child(dm);
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debug_view = dm;
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}
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} break;
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case NOTIFICATION_TRANSFORM_CHANGED: {
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if (navigation && nav_id != -1) {
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navigation->navmesh_set_transform(nav_id, get_relative_transform(navigation));
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}
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} break;
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case NOTIFICATION_EXIT_TREE: {
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if (navigation) {
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if (nav_id != -1) {
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navigation->navmesh_remove(nav_id);
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nav_id = -1;
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}
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}
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if (debug_view) {
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debug_view->queue_delete();
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debug_view = NULL;
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}
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navigation = NULL;
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} break;
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}
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}
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void NavigationMeshInstance::set_navigation_mesh(const Ref<NavigationMesh> &p_navmesh) {
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if (p_navmesh == navmesh)
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return;
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if (navigation && nav_id != -1) {
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navigation->navmesh_remove(nav_id);
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nav_id = -1;
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}
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navmesh = p_navmesh;
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if (navigation && navmesh.is_valid() && enabled) {
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nav_id = navigation->navmesh_create(navmesh, get_relative_transform(navigation), this);
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}
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if (debug_view && navmesh.is_valid()) {
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debug_view->cast_to<MeshInstance>()->set_mesh(navmesh->get_debug_mesh());
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}
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update_gizmo();
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update_configuration_warning();
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}
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Ref<NavigationMesh> NavigationMeshInstance::get_navigation_mesh() const {
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return navmesh;
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}
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String NavigationMeshInstance::get_configuration_warning() const {
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if (!is_visible_in_tree() || !is_inside_tree())
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return String();
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if (!navmesh.is_valid()) {
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return TTR("A NavigationMesh resource must be set or created for this node to work.");
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}
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const Spatial *c = this;
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while (c) {
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if (c->cast_to<Navigation>())
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return String();
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c = c->get_parent()->cast_to<Spatial>();
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}
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return TTR("NavigationMeshInstance must be a child or grandchild to a Navigation node. It only provides navigation data.");
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}
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void NavigationMeshInstance::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_navigation_mesh", "navmesh"), &NavigationMeshInstance::set_navigation_mesh);
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ClassDB::bind_method(D_METHOD("get_navigation_mesh"), &NavigationMeshInstance::get_navigation_mesh);
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ClassDB::bind_method(D_METHOD("set_enabled", "enabled"), &NavigationMeshInstance::set_enabled);
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ClassDB::bind_method(D_METHOD("is_enabled"), &NavigationMeshInstance::is_enabled);
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ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "navmesh", PROPERTY_HINT_RESOURCE_TYPE, "NavigationMesh"), "set_navigation_mesh", "get_navigation_mesh");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "enabled"), "set_enabled", "is_enabled");
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}
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NavigationMeshInstance::NavigationMeshInstance() {
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debug_view = NULL;
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navigation = NULL;
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nav_id = -1;
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enabled = true;
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set_notify_transform(true);
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}
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