Expose additional `BlackboardPlan` methods for custom tooling

blackboard/blackboard_plan.cpp

@@ -319,9 +319,14 @@ void BlackboardPlan::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_prefetch_nodepath_vars", "enable"), &BlackboardPlan::set_prefetch_nodepath_vars);
 	ClassDB::bind_method(D_METHOD("is_prefetching_nodepath_vars"), &BlackboardPlan::is_prefetching_nodepath_vars);
 
+	ClassDB::bind_method(D_METHOD("set_base_plan", "blackboard_plan"), &BlackboardPlan::set_base_plan);
+	ClassDB::bind_method(D_METHOD("get_base_plan"), &BlackboardPlan::get_base_plan);
+	ClassDB::bind_method(D_METHOD("is_derived"), &BlackboardPlan::is_derived);
+	ClassDB::bind_method(D_METHOD("sync_with_base_plan"), &BlackboardPlan::sync_with_base_plan);
 	ClassDB::bind_method(D_METHOD("create_blackboard", "node"), &BlackboardPlan::create_blackboard);
 	ClassDB::bind_method(D_METHOD("populate_blackboard", "blackboard", "overwrite", "node"), &BlackboardPlan::populate_blackboard);
 
+	// To avoid cluttering the member namespace, we do not export unnecessary properties in this class.
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "prefetch_nodepath_vars", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_STORAGE), "set_prefetch_nodepath_vars", "is_prefetching_nodepath_vars");
 }
 

blackboard/blackboard_plan.h

@@ -70,7 +70,7 @@ public:
 	void move_var(int p_index, int p_new_index);
 
 	void sync_with_base_plan();
-	bool is_derived() const { return base.is_valid(); }
+	_FORCE_INLINE_ bool is_derived() const { return base.is_valid(); }
 
 	Ref<Blackboard> create_blackboard(Node *p_agent);
 	void populate_blackboard(const Ref<Blackboard> &p_blackboard, bool overwrite, Node *p_node);

doc/source/classes/class_behaviortreeview.rst

@@ -41,6 +41,8 @@ Methods
 .. table::
    :widths: auto
 
+   +------+----------------------------------------------------------------------------------------------------------------------------------------------+
+   | void | :ref:`clear<class_BehaviorTreeView_method_clear>` **(** **)**                                                                                |
    +------+----------------------------------------------------------------------------------------------------------------------------------------------+
    | void | :ref:`update_tree<class_BehaviorTreeView_method_update_tree>` **(** :ref:`BehaviorTreeData<class_BehaviorTreeData>` behavior_tree_data **)** |
    +------+----------------------------------------------------------------------------------------------------------------------------------------------+
@@ -93,6 +95,18 @@ Minimum delay between two updates (in milliseconds). Set to higher values for a
 Method Descriptions
 -------------------
 
+.. _class_BehaviorTreeView_method_clear:
+
+.. rst-class:: classref-method
+
+void **clear** **(** **)**
+
+Clears the tree view.
+
+.. rst-class:: classref-item-separator
+
+----
+
 .. _class_BehaviorTreeView_method_update_tree:
 
 .. rst-class:: classref-method

doc/source/classes/class_blackboardplan.rst

@@ -34,11 +34,19 @@ Methods
 .. table::
    :widths: auto
 
-   +-------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+   +---------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | :ref:`Blackboard<class_Blackboard>`         | :ref:`create_blackboard<class_BlackboardPlan_method_create_blackboard>` **(** Node node **)**                                                                     |
-   +-------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+   +---------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+   | :ref:`BlackboardPlan<class_BlackboardPlan>` | :ref:`get_base_plan<class_BlackboardPlan_method_get_base_plan>` **(** **)** |const|                                                                               |
+   +---------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+   | bool                                        | :ref:`is_derived<class_BlackboardPlan_method_is_derived>` **(** **)** |const|                                                                                     |
+   +---------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
    | void                                        | :ref:`populate_blackboard<class_BlackboardPlan_method_populate_blackboard>` **(** :ref:`Blackboard<class_Blackboard>` blackboard, bool overwrite, Node node **)** |
-   +-------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+   +---------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+   | void                                        | :ref:`set_base_plan<class_BlackboardPlan_method_set_base_plan>` **(** :ref:`BlackboardPlan<class_BlackboardPlan>` blackboard_plan **)**                           |
+   +---------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
+   | void                                        | :ref:`sync_with_base_plan<class_BlackboardPlan_method_sync_with_base_plan>` **(** **)**                                                                           |
+   +---------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
 
 .. rst-class:: classref-section-separator
 
@@ -83,6 +91,30 @@ Constructs a new instance of a :ref:`Blackboard<class_Blackboard>` using this pl
 
 ----
 
+.. _class_BlackboardPlan_method_get_base_plan:
+
+.. rst-class:: classref-method
+
+:ref:`BlackboardPlan<class_BlackboardPlan>` **get_base_plan** **(** **)** |const|
+
+Returns the base plan. See :ref:`is_derived<class_BlackboardPlan_method_is_derived>`.
+
+.. rst-class:: classref-item-separator
+
+----
+
+.. _class_BlackboardPlan_method_is_derived:
+
+.. rst-class:: classref-method
+
+bool **is_derived** **(** **)** |const|
+
+Returns ``true`` if this plan is derived from another, i.e., the base plan is not ``null``. A derived plan can only contain variables that are present in the base plan, and only variable values can be different.
+
+.. rst-class:: classref-item-separator
+
+----
+
 .. _class_BlackboardPlan_method_populate_blackboard:
 
 .. rst-class:: classref-method
@@ -91,6 +123,32 @@ void **populate_blackboard** **(** :ref:`Blackboard<class_Blackboard>` blackboar
 
 Populates ``blackboard`` with the variables from this plan. If ``overwrite`` is ``true``, existing variables with the same names will be overwritten. If ``NodePath`` prefetching is enabled, ``node`` will be used to retrieve node instances for ``NodePath`` variables and substitute their values.
 
+.. rst-class:: classref-item-separator
+
+----
+
+.. _class_BlackboardPlan_method_set_base_plan:
+
+.. rst-class:: classref-method
+
+void **set_base_plan** **(** :ref:`BlackboardPlan<class_BlackboardPlan>` blackboard_plan **)**
+
+Sets the base plan. If assigned, this plan will be derived from the base plan.
+
+Use with caution, as it will remove variables not present in the base plan. Only use this for custom tooling.
+
+.. rst-class:: classref-item-separator
+
+----
+
+.. _class_BlackboardPlan_method_sync_with_base_plan:
+
+.. rst-class:: classref-method
+
+void **sync_with_base_plan** **(** **)**
+
+Synchronizes this plan with the base plan: removes variables not present in the base plan, and updates type information. Only use this for custom tooling.
+
 .. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
 .. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
 .. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`

doc_classes/BlackboardPlan.xml

@@ -15,6 +15,18 @@
 				Constructs a new instance of a [Blackboard] using this plan. If [NodePath] prefetching is enabled, [param node] will be used to retrieve node instances for [NodePath] variables and substitute their values.
 			</description>
 		</method>
+		<method name="get_base_plan" qualifiers="const">
+			<return type="BlackboardPlan" />
+			<description>
+				Returns the base plan. See [method is_derived].
+			</description>
+		</method>
+		<method name="is_derived" qualifiers="const">
+			<return type="bool" />
+			<description>
+				Returns [code]true[/code] if this plan is derived from another, i.e., the base plan is not [code]null[/code]. A derived plan can only contain variables that are present in the base plan, and only variable values can be different.
+			</description>
+		</method>
 		<method name="populate_blackboard">
 			<return type="void" />
 			<param index="0" name="blackboard" type="Blackboard" />
@@ -24,6 +36,20 @@
 				Populates [param blackboard] with the variables from this plan. If [param overwrite] is [code]true[/code], existing variables with the same names will be overwritten. If [NodePath] prefetching is enabled, [param node] will be used to retrieve node instances for [NodePath] variables and substitute their values.
 			</description>
 		</method>
+		<method name="set_base_plan">
+			<return type="void" />
+			<param index="0" name="blackboard_plan" type="BlackboardPlan" />
+			<description>
+				Sets the base plan. If assigned, this plan will be derived from the base plan.
+				Use with caution, as it will remove variables not present in the base plan. Only use this for custom tooling.
+			</description>
+		</method>
+		<method name="sync_with_base_plan">
+			<return type="void" />
+			<description>
+				Synchronizes this plan with the base plan: removes variables not present in the base plan, and updates type information. Only use this for custom tooling.
+			</description>
+		</method>
 	</methods>
 	<members>
 		<member name="prefetch_nodepath_vars" type="bool" setter="set_prefetch_nodepath_vars" getter="is_prefetching_nodepath_vars" default="true">