Cppcheck report - Godot - branch: 3.x, commit: cd92ad0f69a842d94dc2d56f83cbd8f724ed2959 (2024-12-15): modules/gridmap/grid_map.cpp

/**************************************************************************/
/*  grid_map.cpp                                                          */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "grid_map.h"

#include "core/io/marshalls.h"
#include "core/message_queue.h"
#include "scene/3d/light.h"
#include "scene/resources/mesh_library.h"
#include "scene/resources/physics_material.h"
#include "scene/resources/primitive_meshes.h"
#include "scene/resources/surface_tool.h"
#include "scene/scene_string_names.h"
#include "servers/navigation_server.h"
#include "servers/visual_server.h"

bool GridMap::_set(const StringName &p_name, const Variant &p_value) {
	String name = p_name;

	if (name == "data") {
		Dictionary d = p_value;

		if (d.has("cells")) {
			PoolVector<int> cells = d["cells"];
			int amount = cells.size();
			PoolVector<int>::Read r = cells.read();
			ERR_FAIL_COND_V(amount % 3, false); // not even
			cell_map.clear();
			for (int i = 0; i < amount / 3; i++) {
				IndexKey ik;
				ik.key = decode_uint64((const uint8_t *)&r[i * 3]);
				Cell cell;
				cell.cell = decode_uint32((const uint8_t *)&r[i * 3 + 2]);
				cell_map[ik] = cell;
			}
		}

		_recreate_octant_data();

	} else if (name == "baked_meshes") {
		clear_baked_meshes();

		Array meshes = p_value;

		for (int i = 0; i < meshes.size(); i++) {
			BakedMesh bm;
			bm.mesh = meshes[i];
			ERR_CONTINUE(!bm.mesh.is_valid());
			bm.instance = RID_PRIME(VS::get_singleton()->instance_create());
			VS::get_singleton()->instance_set_portal_mode(bm.instance, VisualServer::InstancePortalMode::INSTANCE_PORTAL_MODE_GLOBAL);
			VS::get_singleton()->get_singleton()->instance_set_base(bm.instance, bm.mesh->get_rid());
			VS::get_singleton()->instance_attach_object_instance_id(bm.instance, get_instance_id());
			if (is_inside_tree()) {
				VS::get_singleton()->instance_set_scenario(bm.instance, get_world()->get_scenario());
				VS::get_singleton()->instance_set_transform(bm.instance, get_global_transform());
			}
			baked_meshes.push_back(bm);
		}

		_recreate_octant_data();

	} else {
		return false;
	}

	return true;
}

bool GridMap::_get(const StringName &p_name, Variant &r_ret) const {
	String name = p_name;

	if (name == "data") {
		Dictionary d;

		PoolVector<int> cells;
		cells.resize(cell_map.size() * 3);
		{
			PoolVector<int>::Write w = cells.write();
			int i = 0;
			for (Map<IndexKey, Cell>::Element *E = cell_map.front(); E; E = E->next(), i++) {
				encode_uint64(E->key().key, (uint8_t *)&w[i * 3]);
				encode_uint32(E->get().cell, (uint8_t *)&w[i * 3 + 2]);
			}
		}

		d["cells"] = cells;

		r_ret = d;
	} else if (name == "baked_meshes") {
		Array ret;
		ret.resize(baked_meshes.size());
		for (int i = 0; i < baked_meshes.size(); i++) {
			ret[i] = baked_meshes[i].mesh;
		}
		r_ret = ret;

	} else {
		return false;
	}

	return true;
}

void GridMap::_get_property_list(List<PropertyInfo> *p_list) const {
	if (baked_meshes.size()) {
		p_list->push_back(PropertyInfo(Variant::ARRAY, "baked_meshes", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_STORAGE));
	}

	p_list->push_back(PropertyInfo(Variant::DICTIONARY, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_STORAGE));
}

void GridMap::set_collision_layer(uint32_t p_layer) {
	collision_layer = p_layer;
	_reset_physic_bodies_collision_filters();
}

uint32_t GridMap::get_collision_layer() const {
	return collision_layer;
}

void GridMap::set_collision_mask(uint32_t p_mask) {
	collision_mask = p_mask;
	_reset_physic_bodies_collision_filters();
}

uint32_t GridMap::get_collision_mask() const {
	return collision_mask;
}

void GridMap::set_collision_mask_bit(int p_bit, bool p_value) {
	ERR_FAIL_INDEX_MSG(p_bit, 32, "Collision mask bit must be between 0 and 31 inclusive.");
	uint32_t mask = get_collision_mask();
	if (p_value) {
		mask |= 1 << p_bit;
	} else {
		mask &= ~(1 << p_bit);
	}
	set_collision_mask(mask);
}

bool GridMap::get_collision_mask_bit(int p_bit) const {
	ERR_FAIL_INDEX_V_MSG(p_bit, 32, false, "Collision mask bit must be between 0 and 31 inclusive.");
	return get_collision_mask() & (1 << p_bit);
}

void GridMap::set_collision_layer_bit(int p_bit, bool p_value) {
	ERR_FAIL_INDEX_MSG(p_bit, 32, "Collision layer bit must be between 0 and 31 inclusive.");
	uint32_t layer = get_collision_layer();
	if (p_value) {
		layer |= 1 << p_bit;
	} else {
		layer &= ~(1 << p_bit);
	}
	set_collision_layer(layer);
}

bool GridMap::get_collision_layer_bit(int p_bit) const {
	ERR_FAIL_INDEX_V_MSG(p_bit, 32, false, "Collision layer bit must be between 0 and 31 inclusive.");
	return get_collision_layer() & (1 << p_bit);
}

void GridMap::set_physics_material(Ref<PhysicsMaterial> p_material) {
	physics_material = p_material;
	_recreate_octant_data();
}

Ref<PhysicsMaterial> GridMap::get_physics_material() const {
	return physics_material;
}

Array GridMap::get_collision_shapes() const {
	Array shapes;
	for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
		Octant *g = E->get();
		RID body = g->static_body;
		Transform body_xform = PhysicsServer::get_singleton()->body_get_state(body, PhysicsServer::BODY_STATE_TRANSFORM);
		int nshapes = PhysicsServer::get_singleton()->body_get_shape_count(body);
		for (int i = 0; i < nshapes; i++) {
			RID shape = PhysicsServer::get_singleton()->body_get_shape(body, i);
			Transform xform = PhysicsServer::get_singleton()->body_get_shape_transform(body, i);
			shapes.push_back(body_xform * xform);
			shapes.push_back(shape);
		}
	}

	return shapes;
}

void GridMap::set_bake_navigation(bool p_bake_navigation) {
	bake_navigation = p_bake_navigation;
	_recreate_octant_data();
}

bool GridMap::is_baking_navigation() {
	return bake_navigation;
}

void GridMap::set_navigation_layers(uint32_t p_navigation_layers) {
	navigation_layers = p_navigation_layers;
	_recreate_octant_data();
}

uint32_t GridMap::get_navigation_layers() {
	return navigation_layers;
}

void GridMap::set_mesh_library(const Ref<MeshLibrary> &p_mesh_library) {
	if (!mesh_library.is_null()) {
		mesh_library->unregister_owner(this);
	}
	mesh_library = p_mesh_library;
	if (!mesh_library.is_null()) {
		mesh_library->register_owner(this);
	}

	_recreate_octant_data();
	_change_notify("mesh_library");
}

Ref<MeshLibrary> GridMap::get_mesh_library() const {
	return mesh_library;
}

void GridMap::set_use_in_baked_light(bool p_use_baked_light) {
	use_in_baked_light = p_use_baked_light;
}

bool GridMap::get_use_in_baked_light() const {
	return use_in_baked_light;
}

void GridMap::set_cell_size(const Vector3 &p_size) {
	ERR_FAIL_COND(p_size.x < 0.001 || p_size.y < 0.001 || p_size.z < 0.001);
	cell_size = p_size;
	_recreate_octant_data();
	emit_signal("cell_size_changed", cell_size);
}
Vector3 GridMap::get_cell_size() const {
	return cell_size;
}

void GridMap::set_octant_size(int p_size) {
	ERR_FAIL_COND(p_size == 0);
	octant_size = p_size;
	_recreate_octant_data();
}
int GridMap::get_octant_size() const {
	return octant_size;
}

void GridMap::set_center_x(bool p_enable) {
	center_x = p_enable;
	_recreate_octant_data();
}

bool GridMap::get_center_x() const {
	return center_x;
}

void GridMap::set_center_y(bool p_enable) {
	center_y = p_enable;
	_recreate_octant_data();
}

bool GridMap::get_center_y() const {
	return center_y;
}

void GridMap::set_center_z(bool p_enable) {
	center_z = p_enable;
	_recreate_octant_data();
}

bool GridMap::get_center_z() const {
	return center_z;
}

void GridMap::set_cell_item(int p_x, int p_y, int p_z, int p_item, int p_rot) {
	if (baked_meshes.size() && !recreating_octants) {
		//if you set a cell item, baked meshes go good bye
		clear_baked_meshes();
		_recreate_octant_data();
	}

	ERR_FAIL_INDEX(ABS(p_x), 1 << 20);
	ERR_FAIL_INDEX(ABS(p_y), 1 << 20);
	ERR_FAIL_INDEX(ABS(p_z), 1 << 20);

	IndexKey key;
	key.x = p_x;
	key.y = p_y;
	key.z = p_z;

	OctantKey ok;
	ok.x = p_x / octant_size;
	ok.y = p_y / octant_size;
	ok.z = p_z / octant_size;

	if (p_item < 0) {
		//erase
		if (cell_map.has(key)) {
			OctantKey octantkey = ok;

			ERR_FAIL_COND(!octant_map.has(octantkey));
			Octant &g = *octant_map[octantkey];
			g.cells.erase(key);
			g.dirty = true;
			cell_map.erase(key);
			_queue_octants_dirty();
		}
		return;
	}

	OctantKey octantkey = ok;

	if (!octant_map.has(octantkey)) {
		//create octant because it does not exist
		Octant *g = memnew(Octant);
		g->dirty = true;
		g->static_body = RID_PRIME(PhysicsServer::get_singleton()->body_create(PhysicsServer::BODY_MODE_STATIC));
		PhysicsServer::get_singleton()->body_attach_object_instance_id(g->static_body, get_instance_id());
		PhysicsServer::get_singleton()->body_set_collision_layer(g->static_body, collision_layer);
		PhysicsServer::get_singleton()->body_set_collision_mask(g->static_body, collision_mask);
		if (physics_material.is_valid()) {
			PhysicsServer::get_singleton()->body_set_param(g->static_body, PhysicsServer::BODY_PARAM_FRICTION, physics_material->get_friction());
			PhysicsServer::get_singleton()->body_set_param(g->static_body, PhysicsServer::BODY_PARAM_BOUNCE, physics_material->get_bounce());
		}
		SceneTree *st = SceneTree::get_singleton();

		if (st && st->is_debugging_collisions_hint()) {
			g->collision_debug = RID_PRIME(VisualServer::get_singleton()->mesh_create());
			g->collision_debug_instance = RID_PRIME(VisualServer::get_singleton()->instance_create());
			VS::get_singleton()->instance_set_portal_mode(g->collision_debug_instance, VisualServer::InstancePortalMode::INSTANCE_PORTAL_MODE_GLOBAL);
			VisualServer::get_singleton()->instance_set_base(g->collision_debug_instance, g->collision_debug);
		}

		octant_map[octantkey] = g;

		if (is_inside_world()) {
			_octant_enter_world(octantkey);
			_octant_transform(octantkey);
		}
	}

	Octant &g = *octant_map[octantkey];
	g.cells.insert(key);
	g.dirty = true;
	_queue_octants_dirty();

	Cell c;
	c.item = p_item;
	c.rot = p_rot;

	cell_map[key] = c;
}

int GridMap::get_cell_item(int p_x, int p_y, int p_z) const {
	ERR_FAIL_INDEX_V(ABS(p_x), 1 << 20, INVALID_CELL_ITEM);
	ERR_FAIL_INDEX_V(ABS(p_y), 1 << 20, INVALID_CELL_ITEM);
	ERR_FAIL_INDEX_V(ABS(p_z), 1 << 20, INVALID_CELL_ITEM);

	IndexKey key;
	key.x = p_x;
	key.y = p_y;
	key.z = p_z;

	if (!cell_map.has(key)) {
		return INVALID_CELL_ITEM;
	}
	return cell_map[key].item;
}

int GridMap::get_cell_item_orientation(int p_x, int p_y, int p_z) const {
	ERR_FAIL_INDEX_V(ABS(p_x), 1 << 20, -1);
	ERR_FAIL_INDEX_V(ABS(p_y), 1 << 20, -1);
	ERR_FAIL_INDEX_V(ABS(p_z), 1 << 20, -1);

	IndexKey key;
	key.x = p_x;
	key.y = p_y;
	key.z = p_z;

	if (!cell_map.has(key)) {
		return -1;
	}
	return cell_map[key].rot;
}

Vector3 GridMap::world_to_map(const Vector3 &p_world_pos) const {
	Vector3 map_pos = p_world_pos / cell_size;
	map_pos.x = floor(map_pos.x);
	map_pos.y = floor(map_pos.y);
	map_pos.z = floor(map_pos.z);
	return map_pos;
}

Vector3 GridMap::map_to_world(int p_x, int p_y, int p_z) const {
	Vector3 offset = _get_offset();
	Vector3 world_pos(
			p_x * cell_size.x + offset.x,
			p_y * cell_size.y + offset.y,
			p_z * cell_size.z + offset.z);
	return world_pos;
}

void GridMap::_octant_transform(const OctantKey &p_key) {
	ERR_FAIL_COND(!octant_map.has(p_key));
	Octant &g = *octant_map[p_key];
	PhysicsServer::get_singleton()->body_set_state(g.static_body, PhysicsServer::BODY_STATE_TRANSFORM, get_global_transform());

	if (g.collision_debug_instance.is_valid()) {
		VS::get_singleton()->instance_set_transform(g.collision_debug_instance, get_global_transform());
	}

	// update transform for NavigationServer regions and navigation debugmesh instances
	if (bake_navigation) {
		for (Map<IndexKey, Octant::NavMesh>::Element *E = g.navmesh_ids.front(); E; E = E->next()) {
			if (E->get().region.is_valid()) {
				NavigationServer::get_singleton()->region_set_transform(E->get().region, get_global_transform() * E->get().xform);
			}
			if (E->get().navmesh_debug_instance.is_valid()) {
				VS::get_singleton()->instance_set_transform(E->get().navmesh_debug_instance, get_global_transform() * E->get().xform);
			}
		}
	}

	for (int i = 0; i < g.multimesh_instances.size(); i++) {
		VS::get_singleton()->instance_set_transform(g.multimesh_instances[i].instance, get_global_transform());
	}
}

bool GridMap::_octant_update(const OctantKey &p_key) {
	ERR_FAIL_COND_V(!octant_map.has(p_key), false);
	Octant &g = *octant_map[p_key];
	if (!g.dirty) {
		return false;
	}

	//erase body shapes
	PhysicsServer::get_singleton()->body_clear_shapes(g.static_body);

	//erase body shapes debug
	if (g.collision_debug.is_valid()) {
		VS::get_singleton()->mesh_clear(g.collision_debug);
	}

	//erase navigation
	for (Map<IndexKey, Octant::NavMesh>::Element *E = g.navmesh_ids.front(); E; E = E->next()) {
		if (E->get().region.is_valid()) {
			NavigationServer::get_singleton()->free(E->get().region);
			E->get().region = RID();
		}
		if (E->get().navmesh_debug_instance.is_valid()) {
			VS::get_singleton()->free(E->get().navmesh_debug_instance);
		}
	}
	g.navmesh_ids.clear();

	//erase multimeshes

	for (int i = 0; i < g.multimesh_instances.size(); i++) {
		if (g.multimesh_instances[i].instance.is_valid()) {
			VS::get_singleton()->free(g.multimesh_instances[i].instance);
		}
		if (g.multimesh_instances[i].multimesh.is_valid()) {
			VS::get_singleton()->free(g.multimesh_instances[i].multimesh);
		}
	}
	g.multimesh_instances.clear();

	if (g.cells.size() == 0) {
		//octant no longer needed
		_octant_clean_up(p_key);
		return true;
	}

	PoolVector<Vector3> col_debug;

	/*
	 * foreach item in this octant,
	 * set item's multimesh's instance count to number of cells which have this item
	 * and set said multimesh bounding box to one containing all cells which have this item
	 */

	Map<int, List<Pair<Transform, IndexKey>>> multimesh_items;

	for (Set<IndexKey>::Element *E = g.cells.front(); E; E = E->next()) {
		ERR_CONTINUE(!cell_map.has(E->get()));
		const Cell &c = cell_map[E->get()];

		if (!mesh_library.is_valid() || !mesh_library->has_item(c.item)) {
			continue;
		}

		Vector3 cellpos = Vector3(E->get().x, E->get().y, E->get().z);
		Vector3 ofs = _get_offset();

		Transform xform;

		xform.basis.set_orthogonal_index(c.rot);
		xform.set_origin(cellpos * cell_size + ofs);
		xform.basis.scale(Vector3(cell_scale, cell_scale, cell_scale));
		if (baked_meshes.size() == 0) {
			if (mesh_library->get_item_mesh(c.item).is_valid()) {
				if (!multimesh_items.has(c.item)) {
					multimesh_items[c.item] = List<Pair<Transform, IndexKey>>();
				}

				Pair<Transform, IndexKey> p;
				p.first = xform * mesh_library->get_item_mesh_transform(c.item);
				p.second = E->get();
				multimesh_items[c.item].push_back(p);
			}
		}

		Vector<MeshLibrary::ShapeData> shapes = mesh_library->get_item_shapes(c.item);
		// add the item's shape at given xform to octant's static_body
		for (int i = 0; i < shapes.size(); i++) {
			// add the item's shape
			if (!shapes[i].shape.is_valid()) {
				continue;
			}
			PhysicsServer::get_singleton()->body_add_shape(g.static_body, shapes[i].shape->get_rid(), xform * shapes[i].local_transform);
			if (g.collision_debug.is_valid()) {
				shapes.write[i].shape->add_vertices_to_array(col_debug, xform * shapes[i].local_transform);
			}
		}

		// add the item's navmesh at given xform to GridMap's Navigation ancestor
		Ref<NavigationMesh> navmesh = mesh_library->get_item_navmesh(c.item);
		if (navmesh.is_valid()) {
			Octant::NavMesh nm;
			nm.xform = xform * mesh_library->get_item_navmesh_transform(c.item);

			if (bake_navigation) {
				RID region = NavigationServer::get_singleton()->region_create();
				NavigationServer::get_singleton()->region_set_navigation_layers(region, navigation_layers);
				NavigationServer::get_singleton()->region_set_navmesh(region, navmesh);
				NavigationServer::get_singleton()->region_set_transform(region, get_global_transform() * nm.xform);
				if (is_inside_tree()) {
					if (navigation) {
						NavigationServer::get_singleton()->region_set_map(region, navigation->get_rid());
					} else {
						NavigationServer::get_singleton()->region_set_map(region, get_world()->get_navigation_map());
					}
				}
				nm.region = region;

				// add navigation debugmesh visual instances if debug is enabled
				SceneTree *st = SceneTree::get_singleton();
				if (st && st->is_debugging_navigation_hint()) {
					if (!nm.navmesh_debug_instance.is_valid()) {
						RID navmesh_debug_rid = navmesh->get_debug_mesh()->get_rid();
						nm.navmesh_debug_instance = VS::get_singleton()->instance_create();
						VS::get_singleton()->instance_set_base(nm.navmesh_debug_instance, navmesh_debug_rid);
						VS::get_singleton()->mesh_surface_set_material(navmesh_debug_rid, 0, st->get_debug_navigation_material()->get_rid());
					}
					if (is_inside_tree()) {
						VS::get_singleton()->instance_set_scenario(nm.navmesh_debug_instance, get_world()->get_scenario());
						VS::get_singleton()->instance_set_transform(nm.navmesh_debug_instance, get_global_transform() * nm.xform);
					}
				}
			}
			g.navmesh_ids[E->get()] = nm;
		}
	}

	//update multimeshes, only if not baked
	if (baked_meshes.size() == 0) {
		for (Map<int, List<Pair<Transform, IndexKey>>>::Element *E = multimesh_items.front(); E; E = E->next()) {
			Octant::MultimeshInstance mmi;

			RID mm = RID_PRIME(VS::get_singleton()->multimesh_create());
			VS::get_singleton()->multimesh_allocate(mm, E->get().size(), VS::MULTIMESH_TRANSFORM_3D, VS::MULTIMESH_COLOR_NONE);
			VS::get_singleton()->multimesh_set_mesh(mm, mesh_library->get_item_mesh(E->key())->get_rid());

			int idx = 0;
			for (List<Pair<Transform, IndexKey>>::Element *F = E->get().front(); F; F = F->next()) {
				VS::get_singleton()->multimesh_instance_set_transform(mm, idx, F->get().first);
#ifdef TOOLS_ENABLED

				Octant::MultimeshInstance::Item it;
				it.index = idx;
				it.transform = F->get().first;
				it.key = F->get().second;
				mmi.items.push_back(it);
#endif

				idx++;
			}

			RID instance = RID_PRIME(VS::get_singleton()->instance_create());
			VS::get_singleton()->instance_set_base(instance, mm);
			VS::get_singleton()->instance_set_portal_mode(instance, VisualServer::InstancePortalMode::INSTANCE_PORTAL_MODE_GLOBAL);

			if (is_inside_tree()) {
				VS::get_singleton()->instance_set_scenario(instance, get_world()->get_scenario());
				VS::get_singleton()->instance_set_transform(instance, get_global_transform());
			}

			mmi.multimesh = mm;
			mmi.instance = instance;

			g.multimesh_instances.push_back(mmi);
		}
	}

	if (col_debug.size()) {
		Array arr;
		arr.resize(VS::ARRAY_MAX);
		arr[VS::ARRAY_VERTEX] = col_debug;

		VS::get_singleton()->mesh_add_surface_from_arrays(g.collision_debug, VS::PRIMITIVE_LINES, arr);
		SceneTree *st = SceneTree::get_singleton();
		if (st) {
			VS::get_singleton()->mesh_surface_set_material(g.collision_debug, 0, st->get_debug_collision_material()->get_rid());
		}
	}

	g.dirty = false;

	return false;
}

void GridMap::_reset_physic_bodies_collision_filters() {
	for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
		PhysicsServer::get_singleton()->body_set_collision_layer(E->get()->static_body, collision_layer);
		PhysicsServer::get_singleton()->body_set_collision_mask(E->get()->static_body, collision_mask);
	}
}

void GridMap::_octant_enter_world(const OctantKey &p_key) {
	ERR_FAIL_COND(!octant_map.has(p_key));
	Octant &g = *octant_map[p_key];
	PhysicsServer::get_singleton()->body_set_state(g.static_body, PhysicsServer::BODY_STATE_TRANSFORM, get_global_transform());
	PhysicsServer::get_singleton()->body_set_space(g.static_body, get_world()->get_space());

	if (g.collision_debug_instance.is_valid()) {
		VS::get_singleton()->instance_set_scenario(g.collision_debug_instance, get_world()->get_scenario());
		VS::get_singleton()->instance_set_transform(g.collision_debug_instance, get_global_transform());
	}

	for (int i = 0; i < g.multimesh_instances.size(); i++) {
		VS::get_singleton()->instance_set_scenario(g.multimesh_instances[i].instance, get_world()->get_scenario());
		VS::get_singleton()->instance_set_transform(g.multimesh_instances[i].instance, get_global_transform());
	}

	if (bake_navigation && mesh_library.is_valid()) {
		for (Map<IndexKey, Octant::NavMesh>::Element *E = g.navmesh_ids.front(); E; E = E->next()) {
			if (cell_map.has(E->key()) && E->get().region.is_valid() == false) {
				Ref<NavigationMesh> nm = mesh_library->get_item_navmesh(cell_map[E->key()].item);
				if (nm.is_valid()) {
					RID region = NavigationServer::get_singleton()->region_create();
					NavigationServer::get_singleton()->region_set_navigation_layers(region, navigation_layers);
					NavigationServer::get_singleton()->region_set_navmesh(region, nm);
					NavigationServer::get_singleton()->region_set_transform(region, get_global_transform() * E->get().xform);
					if (navigation) {
						NavigationServer::get_singleton()->region_set_map(region, navigation->get_rid());
					} else {
						NavigationServer::get_singleton()->region_set_map(region, get_world()->get_navigation_map());
					}
					E->get().region = region;
				}
			}
		}
	}
}

void GridMap::_octant_exit_world(const OctantKey &p_key) {
	ERR_FAIL_COND(!octant_map.has(p_key));
	Octant &g = *octant_map[p_key];
	PhysicsServer::get_singleton()->body_set_state(g.static_body, PhysicsServer::BODY_STATE_TRANSFORM, get_global_transform());
	PhysicsServer::get_singleton()->body_set_space(g.static_body, RID());

	if (g.collision_debug_instance.is_valid()) {
		VS::get_singleton()->instance_set_scenario(g.collision_debug_instance, RID());
	}

	for (int i = 0; i < g.multimesh_instances.size(); i++) {
		VS::get_singleton()->instance_set_scenario(g.multimesh_instances[i].instance, RID());
	}

	for (Map<IndexKey, Octant::NavMesh>::Element *E = g.navmesh_ids.front(); E; E = E->next()) {
		if (E->get().region.is_valid()) {
			NavigationServer::get_singleton()->free(E->get().region);
			E->get().region = RID();
		}
		if (E->get().navmesh_debug_instance.is_valid()) {
			VS::get_singleton()->free(E->get().navmesh_debug_instance);
			E->get().navmesh_debug_instance = RID();
		}
	}
}

void GridMap::_octant_clean_up(const OctantKey &p_key) {
	ERR_FAIL_COND(!octant_map.has(p_key));
	Octant &g = *octant_map[p_key];

	if (g.collision_debug.is_valid()) {
		VS::get_singleton()->free(g.collision_debug);
		g.collision_debug = RID();
	}

	if (g.collision_debug_instance.is_valid()) {
		VS::get_singleton()->free(g.collision_debug_instance);
		g.collision_debug_instance = RID();
	}

	if (g.static_body.is_valid()) {
		PhysicsServer::get_singleton()->free(g.static_body);
		g.static_body = RID();
	}

	// Erase navigation
	for (Map<IndexKey, Octant::NavMesh>::Element *E = g.navmesh_ids.front(); E; E = E->next()) {
		if (E->get().region.is_valid()) {
			NavigationServer::get_singleton()->free(E->get().region);
		}
		if (E->get().navmesh_debug_instance.is_valid()) {
			VS::get_singleton()->free(E->get().navmesh_debug_instance);
		}
	}
	g.navmesh_ids.clear();

	//erase multimeshes

	for (int i = 0; i < g.multimesh_instances.size(); i++) {
		if (g.multimesh_instances[i].instance.is_valid()) {
			VS::get_singleton()->free(g.multimesh_instances[i].instance);
		}
		if (g.multimesh_instances[i].multimesh.is_valid()) {
			VS::get_singleton()->free(g.multimesh_instances[i].multimesh);
		}
	}
	g.multimesh_instances.clear();
}

void GridMap::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_ENTER_WORLD: {
			Spatial *c = this;
			while (c) {
				navigation = Object::cast_to<Navigation>(c);
				if (navigation) {
					break;
				}

				c = Object::cast_to<Spatial>(c->get_parent());
			}

			last_transform = get_global_transform();

			for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
				_octant_enter_world(E->key());
			}

			for (int i = 0; i < baked_meshes.size(); i++) {
				VS::get_singleton()->instance_set_scenario(baked_meshes[i].instance, get_world()->get_scenario());
				VS::get_singleton()->instance_set_transform(baked_meshes[i].instance, get_global_transform());
			}

		} break;
		case NOTIFICATION_TRANSFORM_CHANGED: {
			Transform new_xform = get_global_transform();
			if (new_xform == last_transform) {
				break;
			}
			//update run
			for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
				_octant_transform(E->key());
			}

			last_transform = new_xform;

			for (int i = 0; i < baked_meshes.size(); i++) {
				VS::get_singleton()->instance_set_transform(baked_meshes[i].instance, get_global_transform());
			}

		} break;
		case NOTIFICATION_EXIT_WORLD: {
			for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
				_octant_exit_world(E->key());
			}

			navigation = nullptr;

			//_queue_octants_dirty(MAP_DIRTY_INSTANCES|MAP_DIRTY_TRANSFORMS);
			//_update_octants_callback();
			//_update_area_instances();
			for (int i = 0; i < baked_meshes.size(); i++) {
				VS::get_singleton()->instance_set_scenario(baked_meshes[i].instance, RID());
			}

		} break;
		case NOTIFICATION_VISIBILITY_CHANGED: {
			_update_visibility();
		} break;
	}
}

void GridMap::_update_visibility() {
	if (!is_inside_tree()) {
		return;
	}

	_change_notify("visible");

	for (Map<OctantKey, Octant *>::Element *e = octant_map.front(); e; e = e->next()) {
		Octant *octant = e->value();
		for (int i = 0; i < octant->multimesh_instances.size(); i++) {
			const Octant::MultimeshInstance &mi = octant->multimesh_instances[i];
			VS::get_singleton()->instance_set_visible(mi.instance, is_visible_in_tree());
		}
	}

	for (int i = 0; i < baked_meshes.size(); i++) {
		VS::get_singleton()->instance_set_visible(baked_meshes[i].instance, is_visible_in_tree());
	}
}

void GridMap::_queue_octants_dirty() {
	if (awaiting_update) {
		return;
	}

	MessageQueue::get_singleton()->push_call(this, "_update_octants_callback");
	awaiting_update = true;
}

void GridMap::_recreate_octant_data() {
	recreating_octants = true;
	Map<IndexKey, Cell> cell_copy = cell_map;
	_clear_internal();
	for (Map<IndexKey, Cell>::Element *E = cell_copy.front(); E; E = E->next()) {
		set_cell_item(E->key().x, E->key().y, E->key().z, E->get().item, E->get().rot);
	}
	recreating_octants = false;
}

void GridMap::_clear_internal() {
	for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
		if (is_inside_world()) {
			_octant_exit_world(E->key());
		}

		_octant_clean_up(E->key());
		memdelete(E->get());
	}

	octant_map.clear();
	cell_map.clear();
}

void GridMap::clear() {
	_clear_internal();
	clear_baked_meshes();
}

void GridMap::resource_changed(const RES &p_res) {
	_recreate_octant_data();
}

void GridMap::_update_octants_callback() {
	if (!awaiting_update) {
		return;
	}

	List<OctantKey> to_delete;
	for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
		if (_octant_update(E->key())) {
			to_delete.push_back(E->key());
		}
	}

	while (to_delete.front()) {
		memdelete(octant_map[to_delete.front()->get()]);
		octant_map.erase(to_delete.front()->get());
		to_delete.pop_front();
	}

	_update_visibility();
	awaiting_update = false;
}

void GridMap::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_collision_layer", "layer"), &GridMap::set_collision_layer);
	ClassDB::bind_method(D_METHOD("get_collision_layer"), &GridMap::get_collision_layer);

	ClassDB::bind_method(D_METHOD("set_collision_mask", "mask"), &GridMap::set_collision_mask);
	ClassDB::bind_method(D_METHOD("get_collision_mask"), &GridMap::get_collision_mask);

	ClassDB::bind_method(D_METHOD("set_collision_mask_bit", "bit", "value"), &GridMap::set_collision_mask_bit);
	ClassDB::bind_method(D_METHOD("get_collision_mask_bit", "bit"), &GridMap::get_collision_mask_bit);

	ClassDB::bind_method(D_METHOD("set_collision_layer_bit", "bit", "value"), &GridMap::set_collision_layer_bit);
	ClassDB::bind_method(D_METHOD("get_collision_layer_bit", "bit"), &GridMap::get_collision_layer_bit);

	ClassDB::bind_method(D_METHOD("set_physics_material", "material"), &GridMap::set_physics_material);
	ClassDB::bind_method(D_METHOD("get_physics_material"), &GridMap::get_physics_material);

	ClassDB::bind_method(D_METHOD("set_bake_navigation", "bake_navigation"), &GridMap::set_bake_navigation);
	ClassDB::bind_method(D_METHOD("is_baking_navigation"), &GridMap::is_baking_navigation);

	ClassDB::bind_method(D_METHOD("set_navigation_layers", "navigation_layers"), &GridMap::set_navigation_layers);
	ClassDB::bind_method(D_METHOD("get_navigation_layers"), &GridMap::get_navigation_layers);

	ClassDB::bind_method(D_METHOD("set_mesh_library", "mesh_library"), &GridMap::set_mesh_library);
	ClassDB::bind_method(D_METHOD("get_mesh_library"), &GridMap::get_mesh_library);

	ClassDB::bind_method(D_METHOD("set_cell_size", "size"), &GridMap::set_cell_size);
	ClassDB::bind_method(D_METHOD("get_cell_size"), &GridMap::get_cell_size);

	ClassDB::bind_method(D_METHOD("set_cell_scale", "scale"), &GridMap::set_cell_scale);
	ClassDB::bind_method(D_METHOD("get_cell_scale"), &GridMap::get_cell_scale);

	ClassDB::bind_method(D_METHOD("set_octant_size", "size"), &GridMap::set_octant_size);
	ClassDB::bind_method(D_METHOD("get_octant_size"), &GridMap::get_octant_size);

	ClassDB::bind_method(D_METHOD("set_cell_item", "x", "y", "z", "item", "orientation"), &GridMap::set_cell_item, DEFVAL(0));
	ClassDB::bind_method(D_METHOD("get_cell_item", "x", "y", "z"), &GridMap::get_cell_item);
	ClassDB::bind_method(D_METHOD("get_cell_item_orientation", "x", "y", "z"), &GridMap::get_cell_item_orientation);

	ClassDB::bind_method(D_METHOD("world_to_map", "pos"), &GridMap::world_to_map);
	ClassDB::bind_method(D_METHOD("map_to_world", "x", "y", "z"), &GridMap::map_to_world);

	ClassDB::bind_method(D_METHOD("_update_octants_callback"), &GridMap::_update_octants_callback);
	ClassDB::bind_method(D_METHOD("resource_changed", "resource"), &GridMap::resource_changed);

	ClassDB::bind_method(D_METHOD("set_center_x", "enable"), &GridMap::set_center_x);
	ClassDB::bind_method(D_METHOD("get_center_x"), &GridMap::get_center_x);
	ClassDB::bind_method(D_METHOD("set_center_y", "enable"), &GridMap::set_center_y);
	ClassDB::bind_method(D_METHOD("get_center_y"), &GridMap::get_center_y);
	ClassDB::bind_method(D_METHOD("set_center_z", "enable"), &GridMap::set_center_z);
	ClassDB::bind_method(D_METHOD("get_center_z"), &GridMap::get_center_z);

	ClassDB::bind_method(D_METHOD("set_clip", "enabled", "clipabove", "floor", "axis"), &GridMap::set_clip, DEFVAL(true), DEFVAL(0), DEFVAL(Vector3::AXIS_X));

	ClassDB::bind_method(D_METHOD("clear"), &GridMap::clear);

	ClassDB::bind_method(D_METHOD("get_used_cells"), &GridMap::get_used_cells);
	ClassDB::bind_method(D_METHOD("get_used_cells_by_item", "item"), &GridMap::get_used_cells_by_item);

	ClassDB::bind_method(D_METHOD("get_meshes"), &GridMap::get_meshes);
	ClassDB::bind_method(D_METHOD("get_bake_meshes"), &GridMap::get_bake_meshes);
	ClassDB::bind_method(D_METHOD("get_bake_mesh_instance", "idx"), &GridMap::get_bake_mesh_instance);

	ClassDB::bind_method(D_METHOD("clear_baked_meshes"), &GridMap::clear_baked_meshes);
	ClassDB::bind_method(D_METHOD("make_baked_meshes", "gen_lightmap_uv", "lightmap_uv_texel_size"), &GridMap::make_baked_meshes, DEFVAL(false), DEFVAL(0.1));

	ClassDB::bind_method(D_METHOD("set_use_in_baked_light", "use_in_baked_light"), &GridMap::set_use_in_baked_light);
	ClassDB::bind_method(D_METHOD("get_use_in_baked_light"), &GridMap::get_use_in_baked_light);

	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "mesh_library", PROPERTY_HINT_RESOURCE_TYPE, "MeshLibrary"), "set_mesh_library", "get_mesh_library");
	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "physics_material", PROPERTY_HINT_RESOURCE_TYPE, "PhysicsMaterial"), "set_physics_material", "get_physics_material");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_in_baked_light"), "set_use_in_baked_light", "get_use_in_baked_light");
	ADD_GROUP("Cell", "cell_");
	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "cell_size"), "set_cell_size", "get_cell_size");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "cell_octant_size", PROPERTY_HINT_RANGE, "1,1024,1"), "set_octant_size", "get_octant_size");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "cell_center_x"), "set_center_x", "get_center_x");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "cell_center_y"), "set_center_y", "get_center_y");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "cell_center_z"), "set_center_z", "get_center_z");
	ADD_PROPERTY(PropertyInfo(Variant::REAL, "cell_scale"), "set_cell_scale", "get_cell_scale");
	ADD_GROUP("Collision", "collision_");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "collision_layer", PROPERTY_HINT_LAYERS_3D_PHYSICS), "set_collision_layer", "get_collision_layer");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "collision_mask", PROPERTY_HINT_LAYERS_3D_PHYSICS), "set_collision_mask", "get_collision_mask");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "bake_navigation"), "set_bake_navigation", "is_baking_navigation");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "navigation_layers", PROPERTY_HINT_LAYERS_3D_NAVIGATION), "set_navigation_layers", "get_navigation_layers");

	BIND_CONSTANT(INVALID_CELL_ITEM);

	ADD_SIGNAL(MethodInfo("cell_size_changed", PropertyInfo(Variant::VECTOR3, "cell_size")));
}

void GridMap::set_clip(bool p_enabled, bool p_clip_above, int p_floor, Vector3::Axis p_axis) {
	if (!p_enabled && !clip) {
		return;
	}
	if (clip && p_enabled && clip_floor == p_floor && p_clip_above == clip_above && p_axis == clip_axis) {
		return;
	}

	clip = p_enabled;
	clip_floor = p_floor;
	clip_axis = p_axis;
	clip_above = p_clip_above;

	//make it all update
	for (Map<OctantKey, Octant *>::Element *E = octant_map.front(); E; E = E->next()) {
		Octant *g = E->get();
		g->dirty = true;
	}
	awaiting_update = true;
	_update_octants_callback();
}

void GridMap::set_cell_scale(float p_scale) {
	cell_scale = p_scale;
	_recreate_octant_data();
}

float GridMap::get_cell_scale() const {
	return cell_scale;
}

Array GridMap::get_used_cells() const {
	Array a;
	a.resize(cell_map.size());
	int i = 0;
	for (Map<IndexKey, Cell>::Element *E = cell_map.front(); E; E = E->next()) {
		Vector3 p(E->key().x, E->key().y, E->key().z);
		a[i++] = p;
	}

	return a;
}

Array GridMap::get_used_cells_by_item(int p_item) const {
	Array a;
	for (Map<IndexKey, Cell>::Element *E = cell_map.front(); E; E = E->next()) {
		if (E->value().item == p_item) {
			Vector3 p(E->key().x, E->key().y, E->key().z);
			a.push_back(p);
		}
	}

	return a;
}

Array GridMap::get_meshes() const {
	if (mesh_library.is_null()) {
		return Array();
	}

	Vector3 ofs = _get_offset();
	Array meshes;

	for (Map<IndexKey, Cell>::Element *E = cell_map.front(); E; E = E->next()) {
		int id = E->get().item;
		if (!mesh_library->has_item(id)) {
			continue;
		}
		Ref<Mesh> mesh = mesh_library->get_item_mesh(id);
		if (mesh.is_null()) {
			continue;
		}

		IndexKey ik = E->key();

		Vector3 cellpos = Vector3(ik.x, ik.y, ik.z);

		Transform xform;

		xform.basis.set_orthogonal_index(E->get().rot);

		xform.set_origin(cellpos * cell_size + ofs);
		xform.basis.scale(Vector3(cell_scale, cell_scale, cell_scale));

		meshes.push_back(xform * mesh_library->get_item_mesh_transform(id));
		meshes.push_back(mesh);
	}

	return meshes;
}

Vector3 GridMap::_get_offset() const {
	return Vector3(
			cell_size.x * 0.5 * int(center_x),
			cell_size.y * 0.5 * int(center_y),
			cell_size.z * 0.5 * int(center_z));
}

void GridMap::clear_baked_meshes() {
	for (int i = 0; i < baked_meshes.size(); i++) {
		if (baked_meshes[i].instance.is_valid()) {
			VS::get_singleton()->free(baked_meshes[i].instance);
		}
	}
	baked_meshes.clear();

	_recreate_octant_data();
}

void GridMap::make_baked_meshes(bool p_gen_lightmap_uv, float p_lightmap_uv_texel_size) {
	if (!mesh_library.is_valid()) {
		return;
	}

	//generate
	Map<OctantKey, Map<Ref<Material>, Ref<SurfaceTool>>> surface_map;

	for (Map<IndexKey, Cell>::Element *E = cell_map.front(); E; E = E->next()) {
		IndexKey key = E->key();

		int item = E->get().item;
		if (!mesh_library->has_item(item)) {
			continue;
		}

		Ref<Mesh> mesh = mesh_library->get_item_mesh(item);
		if (!mesh.is_valid()) {
			continue;
		}

		Vector3 cellpos = Vector3(key.x, key.y, key.z);
		Vector3 ofs = _get_offset();

		Transform xform;

		xform.basis.set_orthogonal_index(E->get().rot);
		xform.set_origin(cellpos * cell_size + ofs);
		xform.basis.scale(Vector3(cell_scale, cell_scale, cell_scale));

		OctantKey ok;
		ok.x = key.x / octant_size;
		ok.y = key.y / octant_size;
		ok.z = key.z / octant_size;

		if (!surface_map.has(ok)) {
			surface_map[ok] = Map<Ref<Material>, Ref<SurfaceTool>>();
		}

		Map<Ref<Material>, Ref<SurfaceTool>> &mat_map = surface_map[ok];

		for (int i = 0; i < mesh->get_surface_count(); i++) {
			if (mesh->surface_get_primitive_type(i) != Mesh::PRIMITIVE_TRIANGLES) {
				continue;
			}

			Ref<Material> surf_mat = mesh->surface_get_material(i);
			if (!mat_map.has(surf_mat)) {
				Ref<SurfaceTool> st;
				st.instance();
				st->begin(Mesh::PRIMITIVE_TRIANGLES);
				st->set_material(surf_mat);
				mat_map[surf_mat] = st;
			}

			mat_map[surf_mat]->append_from(mesh, i, xform);
		}
	}

	for (Map<OctantKey, Map<Ref<Material>, Ref<SurfaceTool>>>::Element *E = surface_map.front(); E; E = E->next()) {
		Ref<ArrayMesh> mesh;
		mesh.instance();
		for (Map<Ref<Material>, Ref<SurfaceTool>>::Element *F = E->get().front(); F; F = F->next()) {
			F->get()->commit(mesh);
		}

		BakedMesh bm;
		bm.mesh = mesh;
		bm.instance = RID_PRIME(VS::get_singleton()->instance_create());
		VS::get_singleton()->instance_set_portal_mode(bm.instance, VisualServer::InstancePortalMode::INSTANCE_PORTAL_MODE_GLOBAL);
		VS::get_singleton()->get_singleton()->instance_set_base(bm.instance, bm.mesh->get_rid());
		VS::get_singleton()->instance_attach_object_instance_id(bm.instance, get_instance_id());
		if (is_inside_tree()) {
			VS::get_singleton()->instance_set_scenario(bm.instance, get_world()->get_scenario());
			VS::get_singleton()->instance_set_transform(bm.instance, get_global_transform());
		}

		if (p_gen_lightmap_uv) {
			mesh->lightmap_unwrap(get_global_transform(), p_lightmap_uv_texel_size);
		}
		baked_meshes.push_back(bm);
	}

	_recreate_octant_data();
}

Array GridMap::get_bake_meshes() {
	if (!use_in_baked_light) {
		return Array();
	}

	if (!baked_meshes.size()) {
		make_baked_meshes(true);
	}

	Array arr;
	for (int i = 0; i < baked_meshes.size(); i++) {
		arr.push_back(baked_meshes[i].mesh);
		arr.push_back(Transform());
	}

	return arr;
}

RID GridMap::get_bake_mesh_instance(int p_idx) {
	ERR_FAIL_INDEX_V(p_idx, baked_meshes.size(), RID());
	return baked_meshes[p_idx].instance;
}

GridMap::GridMap() {
	collision_layer = 1;
	collision_mask = 1;

	cell_size = Vector3(2, 2, 2);
<--- Variable 'cell_size' is assigned in constructor body. Consider performing initialization in initialization list. [+]
When an object of a class is created, the constructors of all member variables are called consecutively in the order the variables are declared, even if you don't explicitly write them to the initialization list. You could avoid assigning 'cell_size' a value by passing the value to the constructor in the initialization list.
	octant_size = 8;
	awaiting_update = false;
	_in_tree = false;
	center_x = true;
	center_y = true;
	center_z = true;

	clip = false;
	clip_floor = 0;
	clip_axis = Vector3::AXIS_Z;
	clip_above = true;
	cell_scale = 1.0;

	navigation = nullptr;
	set_notify_transform(true);
	recreating_octants = false;

	use_in_baked_light = false;
}

GridMap::~GridMap() {
	if (!mesh_library.is_null()) {
		mesh_library->unregister_owner(this);
	}

	clear();
}