Add Blackboard.print_state() (#264)

Method that prints values of all variables in each scope.

Author: limbonaut

blackboard/blackboard.cpp

@@ -10,6 +10,7 @@
  */
 
 #include "blackboard.h"
+#include "../util/limbo_compat.h"
 
 #ifdef LIMBOAI_MODULE
 #include "core/variant/variant.h"
@@ -75,6 +76,26 @@ TypedArray<StringName> Blackboard::list_vars() const {
 	return var_names;
 }
 
+void Blackboard::print_state() const {
+	Ref<Blackboard> bb{ this };
+	int scope_idx = 0;
+	while (bb.is_valid()) {
+		int i = 0;
+		String line = "Scope " + itos(scope_idx) + ": { ";
+		for (const KeyValue<StringName, BBVariable> &kv : bb->data) {
+			if (i > 0) {
+				line += ", ";
+			}
+			line += String(kv.key) + ": " + String(kv.value.get_value());
+			i++;
+		}
+		line += " }";
+		PRINT_LINE(line);
+		bb = bb->get_parent();
+		scope_idx++;
+	}
+}
+
 Dictionary Blackboard::get_vars_as_dict() const {
 	Dictionary dict;
 	for (const KeyValue<StringName, BBVariable> &kv : data) {
@@ -136,6 +157,7 @@ void Blackboard::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("erase_var", "var_name"), &Blackboard::erase_var);
 	ClassDB::bind_method(D_METHOD("clear"), &Blackboard::clear);
 	ClassDB::bind_method(D_METHOD("list_vars"), &Blackboard::list_vars);
+	ClassDB::bind_method(D_METHOD("print_state"), &Blackboard::print_state);
 	ClassDB::bind_method(D_METHOD("get_vars_as_dict"), &Blackboard::get_vars_as_dict);
 	ClassDB::bind_method(D_METHOD("populate_from_dict", "dictionary"), &Blackboard::populate_from_dict);
 	ClassDB::bind_method(D_METHOD("top"), &Blackboard::top);

blackboard/blackboard.h

@@ -57,6 +57,7 @@ class Blackboard : public RefCounted {
 	void erase_var(const StringName &p_name);
 	void clear() { data.clear(); }
 	TypedArray<StringName> list_vars() const;
+	void print_state() const;
 
 	Dictionary get_vars_as_dict() const;
 	void populate_from_dict(const Dictionary &p_dictionary);

doc_classes/Blackboard.xml

@@ -86,6 +86,12 @@
 				Fills the Blackboard with multiple variables from a dictionary. The dictionary keys must be variable names and the dictionary values must be variable values. Keys must be StringName or String.
 			</description>
 		</method>
+		<method name="print_state" qualifiers="const">
+			<return type="void" />
+			<description>
+				Prints the values of all variables in each scope.
+			</description>
+		</method>
 		<method name="set_parent">
 			<return type="void" />
 			<param index="0" name="blackboard" type="Blackboard" />