/**************************************************************************/ /* nav_mesh_generator_3d.cpp */ /**************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /**************************************************************************/ /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* 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. */ /**************************************************************************/ #ifndef _3D_DISABLED #include "nav_mesh_generator_3d.h" #include "core/config/project_settings.h" #include "core/math/convex_hull.h" #include "core/os/thread.h" #include "scene/3d/mesh_instance_3d.h" #include "scene/3d/multimesh_instance_3d.h" #include "scene/3d/physics/static_body_3d.h" #include "scene/resources/3d/box_shape_3d.h" #include "scene/resources/3d/capsule_shape_3d.h" #include "scene/resources/3d/concave_polygon_shape_3d.h" #include "scene/resources/3d/convex_polygon_shape_3d.h" #include "scene/resources/3d/cylinder_shape_3d.h" #include "scene/resources/3d/height_map_shape_3d.h" #include "scene/resources/3d/primitive_meshes.h" #include "scene/resources/3d/shape_3d.h" #include "scene/resources/3d/sphere_shape_3d.h" #include "scene/resources/3d/world_boundary_shape_3d.h" #include "scene/resources/navigation_mesh.h" #include "scene/resources/navigation_mesh_source_geometry_data_3d.h" #include "modules/modules_enabled.gen.h" // For csg, gridmap. #ifdef MODULE_CSG_ENABLED #include "modules/csg/csg_shape.h" #endif #ifdef MODULE_GRIDMAP_ENABLED #include "modules/gridmap/grid_map.h" #endif #include NavMeshGenerator3D *NavMeshGenerator3D::singleton = nullptr; Mutex NavMeshGenerator3D::baking_navmesh_mutex; Mutex NavMeshGenerator3D::generator_task_mutex; bool NavMeshGenerator3D::use_threads = true; bool NavMeshGenerator3D::baking_use_multiple_threads = true; bool NavMeshGenerator3D::baking_use_high_priority_threads = true; HashSet> NavMeshGenerator3D::baking_navmeshes; HashMap NavMeshGenerator3D::generator_tasks; NavMeshGenerator3D *NavMeshGenerator3D::get_singleton() { return singleton; } NavMeshGenerator3D::NavMeshGenerator3D() { ERR_FAIL_COND(singleton != nullptr); singleton = this; baking_use_multiple_threads = GLOBAL_GET("navigation/baking/thread_model/baking_use_multiple_threads"); baking_use_high_priority_threads = GLOBAL_GET("navigation/baking/thread_model/baking_use_high_priority_threads"); // Using threads might cause problems on certain exports or with the Editor on certain devices. // This is the main switch to turn threaded navmesh baking off should the need arise. use_threads = baking_use_multiple_threads && !Engine::get_singleton()->is_editor_hint(); } NavMeshGenerator3D::~NavMeshGenerator3D() { cleanup(); } void NavMeshGenerator3D::sync() { if (generator_tasks.size() == 0) { return; } baking_navmesh_mutex.lock(); generator_task_mutex.lock(); LocalVector finished_task_ids; for (KeyValue &E : generator_tasks) { if (WorkerThreadPool::get_singleton()->is_task_completed(E.key)) { WorkerThreadPool::get_singleton()->wait_for_task_completion(E.key); finished_task_ids.push_back(E.key); NavMeshGeneratorTask3D *generator_task = E.value; DEV_ASSERT(generator_task->status == NavMeshGeneratorTask3D::TaskStatus::BAKING_FINISHED); baking_navmeshes.erase(generator_task->navigation_mesh); if (generator_task->callback.is_valid()) { generator_emit_callback(generator_task->callback); } memdelete(generator_task); } } for (WorkerThreadPool::TaskID finished_task_id : finished_task_ids) { generator_tasks.erase(finished_task_id); } generator_task_mutex.unlock(); baking_navmesh_mutex.unlock(); } void NavMeshGenerator3D::cleanup() { baking_navmesh_mutex.lock(); generator_task_mutex.lock(); baking_navmeshes.clear(); for (KeyValue &E : generator_tasks) { WorkerThreadPool::get_singleton()->wait_for_task_completion(E.key); NavMeshGeneratorTask3D *generator_task = E.value; memdelete(generator_task); } generator_tasks.clear(); generator_task_mutex.unlock(); baking_navmesh_mutex.unlock(); } void NavMeshGenerator3D::finish() { cleanup(); } void NavMeshGenerator3D::parse_source_geometry_data(Ref p_navigation_mesh, Ref p_source_geometry_data, Node *p_root_node, const Callable &p_callback) { ERR_FAIL_COND(!Thread::is_main_thread()); ERR_FAIL_COND(!p_navigation_mesh.is_valid()); ERR_FAIL_NULL(p_root_node); ERR_FAIL_COND(!p_root_node->is_inside_tree()); ERR_FAIL_COND(!p_source_geometry_data.is_valid()); generator_parse_source_geometry_data(p_navigation_mesh, p_source_geometry_data, p_root_node); if (p_callback.is_valid()) { generator_emit_callback(p_callback); } } void NavMeshGenerator3D::bake_from_source_geometry_data(Ref p_navigation_mesh, Ref p_source_geometry_data, const Callable &p_callback) { ERR_FAIL_COND(!p_navigation_mesh.is_valid()); ERR_FAIL_COND(!p_source_geometry_data.is_valid()); if (!p_source_geometry_data->has_data()) { p_navigation_mesh->clear(); if (p_callback.is_valid()) { generator_emit_callback(p_callback); } return; } if (is_baking(p_navigation_mesh)) { ERR_FAIL_MSG("NavigationMesh is already baking. Wait for current bake to finish."); } baking_navmesh_mutex.lock(); baking_navmeshes.insert(p_navigation_mesh); baking_navmesh_mutex.unlock(); generator_bake_from_source_geometry_data(p_navigation_mesh, p_source_geometry_data); baking_navmesh_mutex.lock(); baking_navmeshes.erase(p_navigation_mesh); baking_navmesh_mutex.unlock(); if (p_callback.is_valid()) { generator_emit_callback(p_callback); } } void NavMeshGenerator3D::bake_from_source_geometry_data_async(Ref p_navigation_mesh, Ref p_source_geometry_data, const Callable &p_callback) { ERR_FAIL_COND(!p_navigation_mesh.is_valid()); ERR_FAIL_COND(!p_source_geometry_data.is_valid()); if (!p_source_geometry_data->has_data()) { p_navigation_mesh->clear(); if (p_callback.is_valid()) { generator_emit_callback(p_callback); } return; } if (!use_threads) { bake_from_source_geometry_data(p_navigation_mesh, p_source_geometry_data, p_callback); return; } if (is_baking(p_navigation_mesh)) { ERR_FAIL_MSG("NavigationMesh is already baking. Wait for current bake to finish."); return; } baking_navmesh_mutex.lock(); baking_navmeshes.insert(p_navigation_mesh); baking_navmesh_mutex.unlock(); generator_task_mutex.lock(); NavMeshGeneratorTask3D *generator_task = memnew(NavMeshGeneratorTask3D); generator_task->navigation_mesh = p_navigation_mesh; generator_task->source_geometry_data = p_source_geometry_data; generator_task->callback = p_callback; generator_task->status = NavMeshGeneratorTask3D::TaskStatus::BAKING_STARTED; generator_task->thread_task_id = WorkerThreadPool::get_singleton()->add_native_task(&NavMeshGenerator3D::generator_thread_bake, generator_task, NavMeshGenerator3D::baking_use_high_priority_threads, SNAME("NavMeshGeneratorBake3D")); generator_tasks.insert(generator_task->thread_task_id, generator_task); generator_task_mutex.unlock(); } bool NavMeshGenerator3D::is_baking(Ref p_navigation_mesh) { baking_navmesh_mutex.lock(); bool baking = baking_navmeshes.has(p_navigation_mesh); baking_navmesh_mutex.unlock(); return baking; } void NavMeshGenerator3D::generator_thread_bake(void *p_arg) { NavMeshGeneratorTask3D *generator_task = static_cast(p_arg); generator_bake_from_source_geometry_data(generator_task->navigation_mesh, generator_task->source_geometry_data); generator_task->status = NavMeshGeneratorTask3D::TaskStatus::BAKING_FINISHED; } void NavMeshGenerator3D::generator_parse_geometry_node(const Ref &p_navigation_mesh, Ref p_source_geometry_data, Node *p_node, bool p_recurse_children) { generator_parse_meshinstance3d_node(p_navigation_mesh, p_source_geometry_data, p_node); generator_parse_multimeshinstance3d_node(p_navigation_mesh, p_source_geometry_data, p_node); generator_parse_staticbody3d_node(p_navigation_mesh, p_source_geometry_data, p_node); #ifdef MODULE_CSG_ENABLED generator_parse_csgshape3d_node(p_navigation_mesh, p_source_geometry_data, p_node); #endif #ifdef MODULE_GRIDMAP_ENABLED generator_parse_gridmap_node(p_navigation_mesh, p_source_geometry_data, p_node); #endif if (p_recurse_children) { for (int i = 0; i < p_node->get_child_count(); i++) { generator_parse_geometry_node(p_navigation_mesh, p_source_geometry_data, p_node->get_child(i), p_recurse_children); } } } void NavMeshGenerator3D::generator_parse_meshinstance3d_node(const Ref &p_navigation_mesh, Ref p_source_geometry_data, Node *p_node) { MeshInstance3D *mesh_instance = Object::cast_to(p_node); if (mesh_instance) { NavigationMesh::ParsedGeometryType parsed_geometry_type = p_navigation_mesh->get_parsed_geometry_type(); if (parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_MESH_INSTANCES || parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_BOTH) { Ref mesh = mesh_instance->get_mesh(); if (mesh.is_valid()) { p_source_geometry_data->add_mesh(mesh, mesh_instance->get_global_transform()); } } } } void NavMeshGenerator3D::generator_parse_multimeshinstance3d_node(const Ref &p_navigation_mesh, Ref p_source_geometry_data, Node *p_node) { MultiMeshInstance3D *multimesh_instance = Object::cast_to(p_node); if (multimesh_instance) { NavigationMesh::ParsedGeometryType parsed_geometry_type = p_navigation_mesh->get_parsed_geometry_type(); if (parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_MESH_INSTANCES || parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_BOTH) { Ref multimesh = multimesh_instance->get_multimesh(); if (multimesh.is_valid()) { Ref mesh = multimesh->get_mesh(); if (mesh.is_valid()) { int n = multimesh->get_visible_instance_count(); if (n == -1) { n = multimesh->get_instance_count(); } for (int i = 0; i < n; i++) { p_source_geometry_data->add_mesh(mesh, multimesh_instance->get_global_transform() * multimesh->get_instance_transform(i)); } } } } } } void NavMeshGenerator3D::generator_parse_staticbody3d_node(const Ref &p_navigation_mesh, Ref p_source_geometry_data, Node *p_node) { StaticBody3D *static_body = Object::cast_to(p_node); if (static_body) { NavigationMesh::ParsedGeometryType parsed_geometry_type = p_navigation_mesh->get_parsed_geometry_type(); uint32_t parsed_collision_mask = p_navigation_mesh->get_collision_mask(); if ((parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_STATIC_COLLIDERS || parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_BOTH) && (static_body->get_collision_layer() & parsed_collision_mask)) { List shape_owners; static_body->get_shape_owners(&shape_owners); for (uint32_t shape_owner : shape_owners) { if (static_body->is_shape_owner_disabled(shape_owner)) { continue; } const int shape_count = static_body->shape_owner_get_shape_count(shape_owner); for (int shape_index = 0; shape_index < shape_count; shape_index++) { Ref s = static_body->shape_owner_get_shape(shape_owner, shape_index); if (s.is_null()) { continue; } const Transform3D transform = static_body->get_global_transform() * static_body->shape_owner_get_transform(shape_owner); BoxShape3D *box = Object::cast_to(*s); if (box) { Array arr; arr.resize(RS::ARRAY_MAX); BoxMesh::create_mesh_array(arr, box->get_size()); p_source_geometry_data->add_mesh_array(arr, transform); } CapsuleShape3D *capsule = Object::cast_to(*s); if (capsule) { Array arr; arr.resize(RS::ARRAY_MAX); CapsuleMesh::create_mesh_array(arr, capsule->get_radius(), capsule->get_height()); p_source_geometry_data->add_mesh_array(arr, transform); } CylinderShape3D *cylinder = Object::cast_to(*s); if (cylinder) { Array arr; arr.resize(RS::ARRAY_MAX); CylinderMesh::create_mesh_array(arr, cylinder->get_radius(), cylinder->get_radius(), cylinder->get_height()); p_source_geometry_data->add_mesh_array(arr, transform); } SphereShape3D *sphere = Object::cast_to(*s); if (sphere) { Array arr; arr.resize(RS::ARRAY_MAX); SphereMesh::create_mesh_array(arr, sphere->get_radius(), sphere->get_radius() * 2.0); p_source_geometry_data->add_mesh_array(arr, transform); } ConcavePolygonShape3D *concave_polygon = Object::cast_to(*s); if (concave_polygon) { p_source_geometry_data->add_faces(concave_polygon->get_faces(), transform); } ConvexPolygonShape3D *convex_polygon = Object::cast_to(*s); if (convex_polygon) { Vector varr = Variant(convex_polygon->get_points()); Geometry3D::MeshData md; Error err = ConvexHullComputer::convex_hull(varr, md); if (err == OK) { PackedVector3Array faces; for (const Geometry3D::MeshData::Face &face : md.faces) { for (uint32_t k = 2; k < face.indices.size(); ++k) { faces.push_back(md.vertices[face.indices[0]]); faces.push_back(md.vertices[face.indices[k - 1]]); faces.push_back(md.vertices[face.indices[k]]); } } p_source_geometry_data->add_faces(faces, transform); } } HeightMapShape3D *heightmap_shape = Object::cast_to(*s); if (heightmap_shape) { int heightmap_depth = heightmap_shape->get_map_depth(); int heightmap_width = heightmap_shape->get_map_width(); if (heightmap_depth >= 2 && heightmap_width >= 2) { const Vector &map_data = heightmap_shape->get_map_data(); Vector2 heightmap_gridsize(heightmap_width - 1, heightmap_depth - 1); Vector3 start = Vector3(heightmap_gridsize.x, 0, heightmap_gridsize.y) * -0.5; Vector vertex_array; vertex_array.resize((heightmap_depth - 1) * (heightmap_width - 1) * 6); Vector3 *vertex_array_ptrw = vertex_array.ptrw(); const real_t *map_data_ptr = map_data.ptr(); int vertex_index = 0; for (int d = 0; d < heightmap_depth - 1; d++) { for (int w = 0; w < heightmap_width - 1; w++) { vertex_array_ptrw[vertex_index] = start + Vector3(w, map_data_ptr[(heightmap_width * d) + w], d); vertex_array_ptrw[vertex_index + 1] = start + Vector3(w + 1, map_data_ptr[(heightmap_width * d) + w + 1], d); vertex_array_ptrw[vertex_index + 2] = start + Vector3(w, map_data_ptr[(heightmap_width * d) + heightmap_width + w], d + 1); vertex_array_ptrw[vertex_index + 3] = start + Vector3(w + 1, map_data_ptr[(heightmap_width * d) + w + 1], d); vertex_array_ptrw[vertex_index + 4] = start + Vector3(w + 1, map_data_ptr[(heightmap_width * d) + heightmap_width + w + 1], d + 1); vertex_array_ptrw[vertex_index + 5] = start + Vector3(w, map_data_ptr[(heightmap_width * d) + heightmap_width + w], d + 1); vertex_index += 6; } } if (vertex_array.size() > 0) { p_source_geometry_data->add_faces(vertex_array, transform); } } } } } } } } #ifdef MODULE_CSG_ENABLED void NavMeshGenerator3D::generator_parse_csgshape3d_node(const Ref &p_navigation_mesh, Ref p_source_geometry_data, Node *p_node) { CSGShape3D *csgshape3d = Object::cast_to(p_node); if (csgshape3d) { NavigationMesh::ParsedGeometryType parsed_geometry_type = p_navigation_mesh->get_parsed_geometry_type(); uint32_t parsed_collision_mask = p_navigation_mesh->get_collision_mask(); if (parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_MESH_INSTANCES || (parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_STATIC_COLLIDERS && csgshape3d->is_using_collision() && (csgshape3d->get_collision_layer() & parsed_collision_mask)) || parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_BOTH) { CSGShape3D *csg_shape = Object::cast_to(p_node); Array meshes = csg_shape->get_meshes(); if (!meshes.is_empty()) { Ref mesh = meshes[1]; if (mesh.is_valid()) { p_source_geometry_data->add_mesh(mesh, csg_shape->get_global_transform()); } } } } } #endif // MODULE_CSG_ENABLED #ifdef MODULE_GRIDMAP_ENABLED void NavMeshGenerator3D::generator_parse_gridmap_node(const Ref &p_navigation_mesh, Ref p_source_geometry_data, Node *p_node) { GridMap *gridmap = Object::cast_to(p_node); if (gridmap) { NavigationMesh::ParsedGeometryType parsed_geometry_type = p_navigation_mesh->get_parsed_geometry_type(); uint32_t parsed_collision_mask = p_navigation_mesh->get_collision_mask(); if (parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_MESH_INSTANCES || parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_BOTH) { Array meshes = gridmap->get_meshes(); Transform3D xform = gridmap->get_global_transform(); for (int i = 0; i < meshes.size(); i += 2) { Ref mesh = meshes[i + 1]; if (mesh.is_valid()) { p_source_geometry_data->add_mesh(mesh, xform * (Transform3D)meshes[i]); } } } else if ((parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_STATIC_COLLIDERS || parsed_geometry_type == NavigationMesh::PARSED_GEOMETRY_BOTH) && (gridmap->get_collision_layer() & parsed_collision_mask)) { Array shapes = gridmap->get_collision_shapes(); for (int i = 0; i < shapes.size(); i += 2) { RID shape = shapes[i + 1]; PhysicsServer3D::ShapeType type = PhysicsServer3D::get_singleton()->shape_get_type(shape); Variant data = PhysicsServer3D::get_singleton()->shape_get_data(shape); switch (type) { case PhysicsServer3D::SHAPE_SPHERE: { real_t radius = data; Array arr; arr.resize(RS::ARRAY_MAX); SphereMesh::create_mesh_array(arr, radius, radius * 2.0); p_source_geometry_data->add_mesh_array(arr, shapes[i]); } break; case PhysicsServer3D::SHAPE_BOX: { Vector3 extents = data; Array arr; arr.resize(RS::ARRAY_MAX); BoxMesh::create_mesh_array(arr, extents * 2.0); p_source_geometry_data->add_mesh_array(arr, shapes[i]); } break; case PhysicsServer3D::SHAPE_CAPSULE: { Dictionary dict = data; real_t radius = dict["radius"]; real_t height = dict["height"]; Array arr; arr.resize(RS::ARRAY_MAX); CapsuleMesh::create_mesh_array(arr, radius, height); p_source_geometry_data->add_mesh_array(arr, shapes[i]); } break; case PhysicsServer3D::SHAPE_CYLINDER: { Dictionary dict = data; real_t radius = dict["radius"]; real_t height = dict["height"]; Array arr; arr.resize(RS::ARRAY_MAX); CylinderMesh::create_mesh_array(arr, radius, radius, height); p_source_geometry_data->add_mesh_array(arr, shapes[i]); } break; case PhysicsServer3D::SHAPE_CONVEX_POLYGON: { PackedVector3Array vertices = data; Geometry3D::MeshData md; Error err = ConvexHullComputer::convex_hull(vertices, md); if (err == OK) { PackedVector3Array faces; for (const Geometry3D::MeshData::Face &face : md.faces) { for (uint32_t k = 2; k < face.indices.size(); ++k) { faces.push_back(md.vertices[face.indices[0]]); faces.push_back(md.vertices[face.indices[k - 1]]); faces.push_back(md.vertices[face.indices[k]]); } } p_source_geometry_data->add_faces(faces, shapes[i]); } } break; case PhysicsServer3D::SHAPE_CONCAVE_POLYGON: { Dictionary dict = data; PackedVector3Array faces = Variant(dict["faces"]); p_source_geometry_data->add_faces(faces, shapes[i]); } break; case PhysicsServer3D::SHAPE_HEIGHTMAP: { Dictionary dict = data; ///< dict( int:"width", int:"depth",float:"cell_size", float_array:"heights" int heightmap_depth = dict["depth"]; int heightmap_width = dict["width"]; if (heightmap_depth >= 2 && heightmap_width >= 2) { const Vector &map_data = dict["heights"]; Vector2 heightmap_gridsize(heightmap_width - 1, heightmap_depth - 1); Vector3 start = Vector3(heightmap_gridsize.x, 0, heightmap_gridsize.y) * -0.5; Vector vertex_array; vertex_array.resize((heightmap_depth - 1) * (heightmap_width - 1) * 6); Vector3 *vertex_array_ptrw = vertex_array.ptrw(); const real_t *map_data_ptr = map_data.ptr(); int vertex_index = 0; for (int d = 0; d < heightmap_depth - 1; d++) { for (int w = 0; w < heightmap_width - 1; w++) { vertex_array_ptrw[vertex_index] = start + Vector3(w, map_data_ptr[(heightmap_width * d) + w], d); vertex_array_ptrw[vertex_index + 1] = start + Vector3(w + 1, map_data_ptr[(heightmap_width * d) + w + 1], d); vertex_array_ptrw[vertex_index + 2] = start + Vector3(w, map_data_ptr[(heightmap_width * d) + heightmap_width + w], d + 1); vertex_array_ptrw[vertex_index + 3] = start + Vector3(w + 1, map_data_ptr[(heightmap_width * d) + w + 1], d); vertex_array_ptrw[vertex_index + 4] = start + Vector3(w + 1, map_data_ptr[(heightmap_width * d) + heightmap_width + w + 1], d + 1); vertex_array_ptrw[vertex_index + 5] = start + Vector3(w, map_data_ptr[(heightmap_width * d) + heightmap_width + w], d + 1); vertex_index += 6; } } if (vertex_array.size() > 0) { p_source_geometry_data->add_faces(vertex_array, shapes[i]); } } } break; default: { WARN_PRINT("Unsupported collision shape type."); } break; } } } } } #endif // MODULE_GRIDMAP_ENABLED void NavMeshGenerator3D::generator_parse_source_geometry_data(const Ref &p_navigation_mesh, Ref p_source_geometry_data, Node *p_root_node) { List parse_nodes; if (p_navigation_mesh->get_source_geometry_mode() == NavigationMesh::SOURCE_GEOMETRY_ROOT_NODE_CHILDREN) { parse_nodes.push_back(p_root_node); } else { p_root_node->get_tree()->get_nodes_in_group(p_navigation_mesh->get_source_group_name(), &parse_nodes); } Transform3D root_node_transform = Transform3D(); if (Object::cast_to(p_root_node)) { root_node_transform = Object::cast_to(p_root_node)->get_global_transform().affine_inverse(); } p_source_geometry_data->clear(); p_source_geometry_data->root_node_transform = root_node_transform; bool recurse_children = p_navigation_mesh->get_source_geometry_mode() != NavigationMesh::SOURCE_GEOMETRY_GROUPS_EXPLICIT; for (Node *parse_node : parse_nodes) { generator_parse_geometry_node(p_navigation_mesh, p_source_geometry_data, parse_node, recurse_children); } }; void NavMeshGenerator3D::generator_bake_from_source_geometry_data(Ref p_navigation_mesh, const Ref &p_source_geometry_data) { if (p_navigation_mesh.is_null() || p_source_geometry_data.is_null()) { return; } const Vector &vertices = p_source_geometry_data->get_vertices(); const Vector &indices = p_source_geometry_data->get_indices(); if (vertices.size() < 3 || indices.size() < 3) { return; } rcHeightfield *hf = nullptr; rcCompactHeightfield *chf = nullptr; rcContourSet *cset = nullptr; rcPolyMesh *poly_mesh = nullptr; rcPolyMeshDetail *detail_mesh = nullptr; rcContext ctx; // added to keep track of steps, no functionality right now String bake_state = ""; bake_state = "Setting up Configuration..."; // step #1 const float *verts = vertices.ptr(); const int nverts = vertices.size() / 3; const int *tris = indices.ptr(); const int ntris = indices.size() / 3; float bmin[3], bmax[3]; rcCalcBounds(verts, nverts, bmin, bmax); rcConfig cfg; memset(&cfg, 0, sizeof(cfg)); cfg.cs = p_navigation_mesh->get_cell_size(); cfg.ch = p_navigation_mesh->get_cell_height(); if (p_navigation_mesh->get_border_size() > 0.0) { cfg.borderSize = (int)Math::ceil(p_navigation_mesh->get_border_size() / cfg.cs); } cfg.walkableSlopeAngle = p_navigation_mesh->get_agent_max_slope(); cfg.walkableHeight = (int)Math::ceil(p_navigation_mesh->get_agent_height() / cfg.ch); cfg.walkableClimb = (int)Math::floor(p_navigation_mesh->get_agent_max_climb() / cfg.ch); cfg.walkableRadius = (int)Math::ceil(p_navigation_mesh->get_agent_radius() / cfg.cs); cfg.maxEdgeLen = (int)(p_navigation_mesh->get_edge_max_length() / p_navigation_mesh->get_cell_size()); cfg.maxSimplificationError = p_navigation_mesh->get_edge_max_error(); cfg.minRegionArea = (int)(p_navigation_mesh->get_region_min_size() * p_navigation_mesh->get_region_min_size()); cfg.mergeRegionArea = (int)(p_navigation_mesh->get_region_merge_size() * p_navigation_mesh->get_region_merge_size()); cfg.maxVertsPerPoly = (int)p_navigation_mesh->get_vertices_per_polygon(); cfg.detailSampleDist = MAX(p_navigation_mesh->get_cell_size() * p_navigation_mesh->get_detail_sample_distance(), 0.1f); cfg.detailSampleMaxError = p_navigation_mesh->get_cell_height() * p_navigation_mesh->get_detail_sample_max_error(); if (p_navigation_mesh->get_border_size() > 0.0 && !Math::is_equal_approx(p_navigation_mesh->get_cell_size(), p_navigation_mesh->get_border_size())) { WARN_PRINT("Property border_size is ceiled to cell_size voxel units and loses precision."); } if (!Math::is_equal_approx((float)cfg.walkableHeight * cfg.ch, p_navigation_mesh->get_agent_height())) { WARN_PRINT("Property agent_height is ceiled to cell_height voxel units and loses precision."); } if (!Math::is_equal_approx((float)cfg.walkableClimb * cfg.ch, p_navigation_mesh->get_agent_max_climb())) { WARN_PRINT("Property agent_max_climb is floored to cell_height voxel units and loses precision."); } if (!Math::is_equal_approx((float)cfg.walkableRadius * cfg.cs, p_navigation_mesh->get_agent_radius())) { WARN_PRINT("Property agent_radius is ceiled to cell_size voxel units and loses precision."); } if (!Math::is_equal_approx((float)cfg.maxEdgeLen * cfg.cs, p_navigation_mesh->get_edge_max_length())) { WARN_PRINT("Property edge_max_length is rounded to cell_size voxel units and loses precision."); } if (!Math::is_equal_approx((float)cfg.minRegionArea, p_navigation_mesh->get_region_min_size() * p_navigation_mesh->get_region_min_size())) { WARN_PRINT("Property region_min_size is converted to int and loses precision."); } if (!Math::is_equal_approx((float)cfg.mergeRegionArea, p_navigation_mesh->get_region_merge_size() * p_navigation_mesh->get_region_merge_size())) { WARN_PRINT("Property region_merge_size is converted to int and loses precision."); } if (!Math::is_equal_approx((float)cfg.maxVertsPerPoly, p_navigation_mesh->get_vertices_per_polygon())) { WARN_PRINT("Property vertices_per_polygon is converted to int and loses precision."); } if (p_navigation_mesh->get_cell_size() * p_navigation_mesh->get_detail_sample_distance() < 0.1f) { WARN_PRINT("Property detail_sample_distance is clamped to 0.1 world units as the resulting value from multiplying with cell_size is too low."); } cfg.bmin[0] = bmin[0]; cfg.bmin[1] = bmin[1]; cfg.bmin[2] = bmin[2]; cfg.bmax[0] = bmax[0]; cfg.bmax[1] = bmax[1]; cfg.bmax[2] = bmax[2]; AABB baking_aabb = p_navigation_mesh->get_filter_baking_aabb(); if (baking_aabb.has_volume()) { Vector3 baking_aabb_offset = p_navigation_mesh->get_filter_baking_aabb_offset(); cfg.bmin[0] = baking_aabb.position[0] + baking_aabb_offset.x; cfg.bmin[1] = baking_aabb.position[1] + baking_aabb_offset.y; cfg.bmin[2] = baking_aabb.position[2] + baking_aabb_offset.z; cfg.bmax[0] = cfg.bmin[0] + baking_aabb.size[0]; cfg.bmax[1] = cfg.bmin[1] + baking_aabb.size[1]; cfg.bmax[2] = cfg.bmin[2] + baking_aabb.size[2]; } bake_state = "Calculating grid size..."; // step #2 rcCalcGridSize(cfg.bmin, cfg.bmax, cfg.cs, &cfg.width, &cfg.height); // ~30000000 seems to be around sweetspot where Editor baking breaks if ((cfg.width * cfg.height) > 30000000) { WARN_PRINT("NavigationMesh baking process will likely fail." "\nSource geometry is suspiciously big for the current Cell Size and Cell Height in the NavMesh Resource bake settings." "\nIf baking does not fail, the resulting NavigationMesh will create serious pathfinding performance issues." "\nIt is advised to increase Cell Size and/or Cell Height in the NavMesh Resource bake settings or reduce the size / scale of the source geometry."); } bake_state = "Creating heightfield..."; // step #3 hf = rcAllocHeightfield(); ERR_FAIL_NULL(hf); ERR_FAIL_COND(!rcCreateHeightfield(&ctx, *hf, cfg.width, cfg.height, cfg.bmin, cfg.bmax, cfg.cs, cfg.ch)); bake_state = "Marking walkable triangles..."; // step #4 { Vector tri_areas; tri_areas.resize(ntris); ERR_FAIL_COND(tri_areas.is_empty()); memset(tri_areas.ptrw(), 0, ntris * sizeof(unsigned char)); rcMarkWalkableTriangles(&ctx, cfg.walkableSlopeAngle, verts, nverts, tris, ntris, tri_areas.ptrw()); ERR_FAIL_COND(!rcRasterizeTriangles(&ctx, verts, nverts, tris, tri_areas.ptr(), ntris, *hf, cfg.walkableClimb)); } if (p_navigation_mesh->get_filter_low_hanging_obstacles()) { rcFilterLowHangingWalkableObstacles(&ctx, cfg.walkableClimb, *hf); } if (p_navigation_mesh->get_filter_ledge_spans()) { rcFilterLedgeSpans(&ctx, cfg.walkableHeight, cfg.walkableClimb, *hf); } if (p_navigation_mesh->get_filter_walkable_low_height_spans()) { rcFilterWalkableLowHeightSpans(&ctx, cfg.walkableHeight, *hf); } bake_state = "Constructing compact heightfield..."; // step #5 chf = rcAllocCompactHeightfield(); ERR_FAIL_NULL(chf); ERR_FAIL_COND(!rcBuildCompactHeightfield(&ctx, cfg.walkableHeight, cfg.walkableClimb, *hf, *chf)); rcFreeHeightField(hf); hf = nullptr; bake_state = "Eroding walkable area..."; // step #6 ERR_FAIL_COND(!rcErodeWalkableArea(&ctx, cfg.walkableRadius, *chf)); bake_state = "Partitioning..."; // step #7 if (p_navigation_mesh->get_sample_partition_type() == NavigationMesh::SAMPLE_PARTITION_WATERSHED) { ERR_FAIL_COND(!rcBuildDistanceField(&ctx, *chf)); ERR_FAIL_COND(!rcBuildRegions(&ctx, *chf, cfg.borderSize, cfg.minRegionArea, cfg.mergeRegionArea)); } else if (p_navigation_mesh->get_sample_partition_type() == NavigationMesh::SAMPLE_PARTITION_MONOTONE) { ERR_FAIL_COND(!rcBuildRegionsMonotone(&ctx, *chf, cfg.borderSize, cfg.minRegionArea, cfg.mergeRegionArea)); } else { ERR_FAIL_COND(!rcBuildLayerRegions(&ctx, *chf, cfg.borderSize, cfg.minRegionArea)); } bake_state = "Creating contours..."; // step #8 cset = rcAllocContourSet(); ERR_FAIL_NULL(cset); ERR_FAIL_COND(!rcBuildContours(&ctx, *chf, cfg.maxSimplificationError, cfg.maxEdgeLen, *cset)); bake_state = "Creating polymesh..."; // step #9 poly_mesh = rcAllocPolyMesh(); ERR_FAIL_NULL(poly_mesh); ERR_FAIL_COND(!rcBuildPolyMesh(&ctx, *cset, cfg.maxVertsPerPoly, *poly_mesh)); detail_mesh = rcAllocPolyMeshDetail(); ERR_FAIL_NULL(detail_mesh); ERR_FAIL_COND(!rcBuildPolyMeshDetail(&ctx, *poly_mesh, *chf, cfg.detailSampleDist, cfg.detailSampleMaxError, *detail_mesh)); rcFreeCompactHeightfield(chf); chf = nullptr; rcFreeContourSet(cset); cset = nullptr; bake_state = "Converting to native navigation mesh..."; // step #10 Vector nav_vertices; for (int i = 0; i < detail_mesh->nverts; i++) { const float *v = &detail_mesh->verts[i * 3]; nav_vertices.push_back(Vector3(v[0], v[1], v[2])); } p_navigation_mesh->set_vertices(nav_vertices); p_navigation_mesh->clear_polygons(); for (int i = 0; i < detail_mesh->nmeshes; i++) { const unsigned int *detail_mesh_m = &detail_mesh->meshes[i * 4]; const unsigned int detail_mesh_bverts = detail_mesh_m[0]; const unsigned int detail_mesh_m_btris = detail_mesh_m[2]; const unsigned int detail_mesh_ntris = detail_mesh_m[3]; const unsigned char *detail_mesh_tris = &detail_mesh->tris[detail_mesh_m_btris * 4]; for (unsigned int j = 0; j < detail_mesh_ntris; j++) { Vector nav_indices; nav_indices.resize(3); // Polygon order in recast is opposite than godot's nav_indices.write[0] = ((int)(detail_mesh_bverts + detail_mesh_tris[j * 4 + 0])); nav_indices.write[1] = ((int)(detail_mesh_bverts + detail_mesh_tris[j * 4 + 2])); nav_indices.write[2] = ((int)(detail_mesh_bverts + detail_mesh_tris[j * 4 + 1])); p_navigation_mesh->add_polygon(nav_indices); } } bake_state = "Cleanup..."; // step #11 rcFreePolyMesh(poly_mesh); poly_mesh = nullptr; rcFreePolyMeshDetail(detail_mesh); detail_mesh = nullptr; bake_state = "Baking finished."; // step #12 } bool NavMeshGenerator3D::generator_emit_callback(const Callable &p_callback) { ERR_FAIL_COND_V(!p_callback.is_valid(), false); Callable::CallError ce; Variant result; p_callback.callp(nullptr, 0, result, ce); return ce.error == Callable::CallError::CALL_OK; } #endif // _3D_DISABLED