415 lines
10 KiB
C++
415 lines
10 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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/* */
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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 "navigation.h"
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#include "mesh_instance.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(CMP_EPSILON);
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ek.to=f.vertex[(j+1)%3].snapped(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<Mesh>( memnew( Mesh ) );
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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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