b7c41f9ba1
This PR implements: * A new hint: PROPERTY_HINT_NODE_TYPE for variant type OBJECT, which can take specific node types as hint string. * The editor will show it as a node path, but will set it as a pointer to a node from the current scene if you select a path. * When scene is saved, the node path is saved, then restored as a pointer. NOTE: This is a proof of concept and this approach will most likely not work. The reason if that, if the node referenced is deleted, then when trying to edit this the node will become invalid. Potential workarounds: Since this uses the Variant API, it should obtain the pointer from the Variant object ID. Yet, this would either only really work in GDScript or it would need to be implemented with workarounds in every language. Alternative ways to make this work: Nodes could export an additional property with a node path (like for which_node, it could be which_node_path). Another alternative: Path editing could happen as a hidden metadata (ignoring the pointer).
253 lines
8.4 KiB
C++
253 lines
8.4 KiB
C++
/*************************************************************************/
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/* packed_scene.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef PACKED_SCENE_H
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#define PACKED_SCENE_H
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#include "core/io/resource.h"
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#include "scene/main/node.h"
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class SceneState : public RefCounted {
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GDCLASS(SceneState, RefCounted);
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Vector<StringName> names;
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Vector<Variant> variants;
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Vector<NodePath> node_paths;
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Vector<NodePath> editable_instances;
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mutable HashMap<NodePath, int> node_path_cache;
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mutable HashMap<int, int> base_scene_node_remap;
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int base_scene_idx = -1;
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enum {
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NO_PARENT_SAVED = 0x7FFFFFFF,
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NAME_INDEX_BITS = 18,
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NAME_MASK = (1 << NAME_INDEX_BITS) - 1,
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};
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struct NodeData {
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int parent = 0;
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int owner = 0;
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int type = 0;
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int name = 0;
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int instance = 0;
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int index = 0;
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struct Property {
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int name = 0;
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int value = 0;
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};
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Vector<Property> properties;
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Vector<int> groups;
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};
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struct DeferredNodePathProperties {
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Node *base = nullptr;
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StringName property;
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NodePath path;
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};
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Vector<NodeData> nodes;
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struct ConnectionData {
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int from = 0;
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int to = 0;
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int signal = 0;
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int method = 0;
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int flags = 0;
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int unbinds = 0;
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Vector<int> binds;
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};
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Vector<ConnectionData> connections;
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Error _parse_node(Node *p_owner, Node *p_node, int p_parent_idx, HashMap<StringName, int> &name_map, HashMap<Variant, int, VariantHasher, VariantComparator> &variant_map, HashMap<Node *, int> &node_map, HashMap<Node *, int> &nodepath_map);
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Error _parse_connections(Node *p_owner, Node *p_node, HashMap<StringName, int> &name_map, HashMap<Variant, int, VariantHasher, VariantComparator> &variant_map, HashMap<Node *, int> &node_map, HashMap<Node *, int> &nodepath_map);
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String path;
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uint64_t last_modified_time = 0;
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static bool disable_placeholders;
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Vector<String> _get_node_groups(int p_idx) const;
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int _find_base_scene_node_remap_key(int p_idx) const;
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protected:
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static void _bind_methods();
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public:
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enum {
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FLAG_ID_IS_PATH = (1 << 30),
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TYPE_INSTANCED = 0x7FFFFFFF,
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FLAG_INSTANCE_IS_PLACEHOLDER = (1 << 30),
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FLAG_PATH_PROPERTY_IS_NODE = (1 << 30),
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FLAG_PROP_NAME_MASK = FLAG_PATH_PROPERTY_IS_NODE - 1,
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FLAG_MASK = (1 << 24) - 1,
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};
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enum GenEditState {
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GEN_EDIT_STATE_DISABLED,
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GEN_EDIT_STATE_INSTANCE,
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GEN_EDIT_STATE_MAIN,
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GEN_EDIT_STATE_MAIN_INHERITED,
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};
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struct PackState {
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Ref<SceneState> state;
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int node = -1;
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};
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static void set_disable_placeholders(bool p_disable);
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int find_node_by_path(const NodePath &p_node) const;
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Variant get_property_value(int p_node, const StringName &p_property, bool &found) const;
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bool is_node_in_group(int p_node, const StringName &p_group) const;
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bool is_connection(int p_node, const StringName &p_signal, int p_to_node, const StringName &p_to_method) const;
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void set_bundled_scene(const Dictionary &p_dictionary);
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Dictionary get_bundled_scene() const;
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Error pack(Node *p_scene);
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void set_path(const String &p_path);
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String get_path() const;
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void clear();
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bool can_instantiate() const;
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Node *instantiate(GenEditState p_edit_state) const;
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Ref<SceneState> get_base_scene_state() const;
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//unbuild API
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int get_node_count() const;
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StringName get_node_type(int p_idx) const;
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StringName get_node_name(int p_idx) const;
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NodePath get_node_path(int p_idx, bool p_for_parent = false) const;
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NodePath get_node_owner_path(int p_idx) const;
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Ref<PackedScene> get_node_instance(int p_idx) const;
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String get_node_instance_placeholder(int p_idx) const;
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bool is_node_instance_placeholder(int p_idx) const;
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Vector<StringName> get_node_groups(int p_idx) const;
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int get_node_index(int p_idx) const;
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int get_node_property_count(int p_idx) const;
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StringName get_node_property_name(int p_idx, int p_prop) const;
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Variant get_node_property_value(int p_idx, int p_prop) const;
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Vector<String> get_node_deferred_nodepath_properties(int p_idx) const;
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int get_connection_count() const;
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NodePath get_connection_source(int p_idx) const;
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StringName get_connection_signal(int p_idx) const;
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NodePath get_connection_target(int p_idx) const;
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StringName get_connection_method(int p_idx) const;
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int get_connection_flags(int p_idx) const;
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int get_connection_unbinds(int p_idx) const;
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Array get_connection_binds(int p_idx) const;
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bool has_connection(const NodePath &p_node_from, const StringName &p_signal, const NodePath &p_node_to, const StringName &p_method);
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Vector<NodePath> get_editable_instances() const;
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//build API
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int add_name(const StringName &p_name);
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int add_value(const Variant &p_value);
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int add_node_path(const NodePath &p_path);
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int add_node(int p_parent, int p_owner, int p_type, int p_name, int p_instance, int p_index);
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void add_node_property(int p_node, int p_name, int p_value, bool p_deferred_node_path = false);
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void add_node_group(int p_node, int p_group);
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void set_base_scene(int p_idx);
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void add_connection(int p_from, int p_to, int p_signal, int p_method, int p_flags, int p_unbinds, const Vector<int> &p_binds);
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void add_editable_instance(const NodePath &p_path);
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virtual void set_last_modified_time(uint64_t p_time) { last_modified_time = p_time; }
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uint64_t get_last_modified_time() const { return last_modified_time; }
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// Used when saving pointers (saves a path property instead).
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static String get_meta_pointer_property(const String &p_property);
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SceneState();
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};
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VARIANT_ENUM_CAST(SceneState::GenEditState)
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class PackedScene : public Resource {
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GDCLASS(PackedScene, Resource);
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RES_BASE_EXTENSION("scn");
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Ref<SceneState> state;
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void _set_bundled_scene(const Dictionary &p_scene);
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Dictionary _get_bundled_scene() const;
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protected:
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virtual bool editor_can_reload_from_file() override { return false; } // this is handled by editor better
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static void _bind_methods();
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virtual void reset_state() override;
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public:
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enum GenEditState {
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GEN_EDIT_STATE_DISABLED,
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GEN_EDIT_STATE_INSTANCE,
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GEN_EDIT_STATE_MAIN,
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GEN_EDIT_STATE_MAIN_INHERITED,
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};
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Error pack(Node *p_scene);
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void clear();
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bool can_instantiate() const;
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Node *instantiate(GenEditState p_edit_state = GEN_EDIT_STATE_DISABLED) const;
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void recreate_state();
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void replace_state(Ref<SceneState> p_by);
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virtual void set_path(const String &p_path, bool p_take_over = false) override;
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#ifdef TOOLS_ENABLED
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virtual void set_last_modified_time(uint64_t p_time) override {
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state->set_last_modified_time(p_time);
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}
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#endif
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Ref<SceneState> get_state() const;
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PackedScene();
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};
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VARIANT_ENUM_CAST(PackedScene::GenEditState)
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#endif // SCENE_PRELOADER_H
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