Block scenes: Remove most serialized properties

For Block, StatementBlock and EntryBlock classes.

Only if the block is in the model catalog. Otherwise keep the previous
behavior.

The exceptions are:
- Color: it should be derived from the category, but needs refactoring
- Scope: may be handled in a different way

Author: manuq

addons/block_code/ui/blocks/block/block.gd

@@ -2,6 +2,7 @@
 class_name Block
 extends MarginContainer
 
+const BlocksCatalog = preload("res://addons/block_code/model/blocks_catalog.gd")
 const InstructionTree = preload("res://addons/block_code/instruction_tree/instruction_tree.gd")
 const Types = preload("res://addons/block_code/types/types.gd")
 
@@ -92,7 +93,13 @@ func update_resources(undo_redo: EditorUndoRedoManager):
 
 # Override this method to add more serialized properties
 func get_serialized_props() -> Array:
-	return serialize_props(["block_name", "label", "color", "block_type", "position", "scope"])
+	if not BlocksCatalog.has_block(block_name):
+		return serialize_props(["block_name", "label", "color", "block_type", "position", "scope"])
+
+	# TODO: Remove remaining serialization:
+	# - Derive color from category.
+	# - Handle scope in a different way?
+	return serialize_props(["color", "scope"])
 
 
 func _to_string():

addons/block_code/ui/blocks/entry_block/entry_block.gd

@@ -30,5 +30,6 @@ func get_entry_statement() -> String:
 
 func get_serialized_props() -> Array:
 	var props := super()
-	props.append_array(serialize_props(["signal_name"]))
+	if not BlocksCatalog.has_block(block_name):
+		props.append_array(serialize_props(["signal_name"]))
 	return props

addons/block_code/ui/blocks/statement_block/statement_block.gd

@@ -36,7 +36,8 @@ func _on_drag_drop_area_mouse_down():
 
 func get_serialized_props() -> Array:
 	var props := super()
-	props.append_array(serialize_props(["block_format", "statement", "defaults"]))
+	if not BlocksCatalog.has_block(block_name):
+		props.append_array(serialize_props(["block_format", "statement", "defaults"]))
 
 	var _param_input_strings: Dictionary = {}
 	for pair in param_name_input_pairs: