Add dynamic options lists for blocks

addons/block_code/block_code_plugin.gd

@@ -1,5 +1,6 @@
 @tool
 extends EditorPlugin
+
 const MainPanelScene := preload("res://addons/block_code/ui/main_panel.tscn")
 const MainPanel = preload("res://addons/block_code/ui/main_panel.gd")
 const Types = preload("res://addons/block_code/types/types.gd")
@@ -93,16 +94,10 @@ func _exit_tree():
 
 
 func _ready():
-	connect("scene_changed", _on_scene_changed)
 	editor_inspector.connect("edited_object_changed", _on_editor_inspector_edited_object_changed)
-	_on_scene_changed(EditorInterface.get_edited_scene_root())
 	_on_editor_inspector_edited_object_changed()
 
 
-func _on_scene_changed(scene_root: Node):
-	main_panel.switch_scene(scene_root)
-
-
 func _on_editor_inspector_edited_object_changed():
 	var edited_object = editor_inspector.get_edited_object()
 	#var edited_node = edited_object as Node

addons/block_code/blocks/graphics/animationplayer_play.gd

@@ -0,0 +1,15 @@
+@tool
+extends BlockExtension
+
+const OptionData = preload("res://addons/block_code/code_generation/option_data.gd")
+
+
+func get_defaults_for_node(context_node: Node) -> Dictionary:
+	var animation_player = context_node as AnimationPlayer
+
+	if not animation_player:
+		return {}
+
+	var animation_list = animation_player.get_animation_list()
+
+	return {"animation": OptionData.new(animation_list)}

addons/block_code/blocks/graphics/animationplayer_play.tres

@@ -1,7 +1,13 @@
-[gd_resource type="Resource" load_steps=4 format=3 uid="uid://c5e1byehtxwc0"]
+[gd_resource type="Resource" load_steps=6 format=3 uid="uid://c5e1byehtxwc0"]
 
 [ext_resource type="Script" path="res://addons/block_code/code_generation/block_definition.gd" id="1_emeuv"]
 [ext_resource type="Script" path="res://addons/block_code/code_generation/option_data.gd" id="1_xu43h"]
+[ext_resource type="Script" path="res://addons/block_code/blocks/graphics/animationplayer_play.gd" id="2_7ymgi"]
+
+[sub_resource type="Resource" id="Resource_qpxn2"]
+script = ExtResource("1_xu43h")
+selected = 0
+items = []
 
 [sub_resource type="Resource" id="Resource_vnp2w"]
 script = ExtResource("1_xu43h")
@@ -16,14 +22,16 @@ description = "Play the animation."
 category = "Graphics | Animation"
 type = 2
 variant_type = 0
-display_template = "Play {animation: STRING} {direction: OPTION}"
-code_template = "if \"{direction}\" == \"ahead\":
+display_template = "Play {animation: STRING} {direction: NIL}"
+code_template = "if {direction} == \"ahead\":
 	play({animation})
 else:
 	play_backwards({animation})
 "
 defaults = {
+"animation": SubResource("Resource_qpxn2"),
 "direction": SubResource("Resource_vnp2w")
 }
 signal_name = ""
 scope = ""
+extension_script = ExtResource("2_7ymgi")

addons/block_code/blocks/logic/compare.tres

@@ -16,8 +16,8 @@ description = ""
 category = "Logic | Comparison"
 type = 3
 variant_type = 1
-display_template = "{float1: FLOAT} {op: OPTION} {float2: FLOAT}"
-code_template = "{float1} {op} {float2}"
+display_template = "{float1: FLOAT} {op: NIL} {float2: FLOAT}"
+code_template = "{float1} {{op}} {float2}"
 defaults = {
 "float1": 1.0,
 "float2": 1.0,

addons/block_code/blocks/sounds/pause_continue_sound.tres

@@ -6,7 +6,7 @@
 [sub_resource type="Resource" id="Resource_lalgp"]
 script = ExtResource("1_ilhdq")
 selected = 0
-items = ["Pause", "Continue"]
+items = ["pause", "continue"]
 
 [resource]
 script = ExtResource("1_q04gm")
@@ -16,9 +16,9 @@ description = "Pause/Continue the audio stream"
 category = "Sounds"
 type = 2
 variant_type = 0
-display_template = "{pause: OPTION} the sound {name: STRING}"
+display_template = "{pause: NIL} the sound {name: STRING}"
 code_template = "var __sound_node = get_node({name})
-if \"{pause}\" == \"pause\":
+if {pause} == \"pause\":
 	__sound_node.stream_paused = true
 else:
 	__sound_node.stream_paused = false

addons/block_code/code_generation/block_ast.gd

@@ -44,31 +44,15 @@ class ASTNode:
 		children = []
 		arguments = {}
 
-	func get_code_block() -> String:
-		var code_block: String = data.code_template  # get multiline code_template from block definition
-
-		# insert args
-
-		# check if args match an overload in the resource
-
-		for arg_name in arguments:
-			# Use parentheses to be safe
-			var argument = arguments[arg_name]
-			var code_string: String
-			if argument is ASTValueNode:
-				code_string = argument.get_code()
-			else:
-				code_string = BlockAST.raw_input_to_code_string(argument)
-
-			code_block = code_block.replace("{%s}" % arg_name, code_string)
-
+	func _get_code_block() -> String:
+		var code_block: String = BlockAST.format_code_template(data.code_template, arguments)
 		return IDHandler.make_unique(code_block)
 
 	func get_code(depth: int) -> String:
 		var code: String = ""
 
 		# append code block
-		var code_block := get_code_block()
+		var code_block := _get_code_block()
 		code_block = code_block.indent("\t".repeat(depth))
 
 		code += code_block + "\n"
@@ -91,21 +75,7 @@ class ASTValueNode:
 		arguments = {}
 
 	func get_code() -> String:
-		var code: String = data.code_template  # get code_template from block definition
-
-		# check if args match an overload in the resource
-
-		for arg_name in arguments:
-			# Use parentheses to be safe
-			var argument = arguments[arg_name]
-			var code_string: String
-			if argument is ASTValueNode:
-				code_string = argument.get_code()
-			else:
-				code_string = BlockAST.raw_input_to_code_string(argument)
-
-			code = code.replace("{%s}" % arg_name, code_string)
-
+		var code: String = BlockAST.format_code_template(data.code_template, arguments)
 		return IDHandler.make_unique("(%s)" % code)
 
 
@@ -127,18 +97,42 @@ func to_string_recursive(node: ASTNode, depth: int) -> String:
 	return string
 
 
+static func format_code_template(code_template: String, arguments: Dictionary) -> String:
+	for argument_name in arguments:
+		# Use parentheses to be safe
+		var argument_value: Variant = arguments[argument_name]
+		var code_string: String
+		var raw_string: String
+
+		if argument_value is OptionData:
+			# Temporary hack: previously, the value was stored as an OptionData
+			# object with a list of items and a "selected" property. If we are
+			# using an older block script where that is the case, convert the
+			# value to the value of its selected item.
+			# See also, ParameterInput._update_option_input.
+			argument_value = argument_value.items[argument_value.selected]
+
+		if argument_value is ASTValueNode:
+			code_string = argument_value.get_code()
+			raw_string = code_string
+		else:
+			code_string = BlockAST.raw_input_to_code_string(argument_value)
+			raw_string = str(argument_value)
+
+		code_template = code_template.replace("{{%s}}" % argument_name, raw_string)
+		code_template = code_template.replace("{%s}" % argument_name, code_string)
+
+	return code_template
+
+
 static func raw_input_to_code_string(input) -> String:
 	match typeof(input):
 		TYPE_STRING:
-			return "'%s'" % input.replace("\\", "\\\\").replace("'", "\\'")
+			return "'%s'" % input.c_escape()
 		TYPE_VECTOR2:
 			return "Vector2%s" % str(input)
 		TYPE_COLOR:
 			return "Color%s" % str(input)
-		TYPE_OBJECT:
-			if input is OptionData:
-				var option_data := input as OptionData
-				return option_data.items[option_data.selected]
 		_:
 			return "%s" % input
 

addons/block_code/code_generation/block_definition.gd

@@ -4,6 +4,8 @@ extends Resource
 
 const Types = preload("res://addons/block_code/types/types.gd")
 
+const FORMAT_STRING_PATTERN = "\\[(?<out_parameter>[^\\]]+)\\]|\\{(?<in_parameter>[^}]+)\\}|(?<label>[^\\{\\[]+)"
+
 @export var name: StringName
 
 ## The target node. Leaving this empty the block is considered a general block
@@ -27,6 +29,16 @@ const Types = preload("res://addons/block_code/types/types.gd")
 ## Empty except for blocks that have a defined scope
 @export var scope: String
 
+@export var extension_script: GDScript
+
+static var _display_template_regex := RegEx.create_from_string(FORMAT_STRING_PATTERN)
+
+var _extension: BlockExtension:
+	get:
+		if _extension == null and extension_script and extension_script.can_instantiate():
+			_extension = extension_script.new()
+		return _extension as BlockExtension
+
 
 func _init(
 	p_name: StringName = &"",
@@ -40,6 +52,7 @@ func _init(
 	p_defaults = {},
 	p_signal_name: String = "",
 	p_scope: String = "",
+	p_extension_script: GDScript = null,
 ):
 	name = p_name
 	target_node_class = p_target_node_class
@@ -52,7 +65,67 @@ func _init(
 	defaults = p_defaults
 	signal_name = p_signal_name
 	scope = p_scope
+	extension_script = p_extension_script
+
+
+func get_defaults_for_node(parent_node: Node) -> Dictionary:
+	if not _extension:
+		return defaults
+
+	# Use Dictionary.merge instead of Dictionary.merged for Godot 4.2 compatibility
+	var new_defaults := _extension.get_defaults_for_node(parent_node)
+	new_defaults.merge(defaults)
+	return new_defaults
 
 
 func _to_string():
 	return "%s - %s" % [name, target_node_class]
+
+
+func get_output_parameters() -> Dictionary:
+	var result: Dictionary
+	for item in parse_display_template(display_template):
+		if item.has("out_parameter"):
+			var parameter = item.get("out_parameter")
+			result[parameter["name"]] = parameter["type"]
+	return result
+
+
+static func parse_display_template(template_string: String):
+	var items: Array[Dictionary]
+	for regex_match in _display_template_regex.search_all(template_string):
+		if regex_match.names.has("label"):
+			var label_string := regex_match.get_string("label")
+			items.append({"label": label_string})
+		elif regex_match.names.has("in_parameter"):
+			var parameter_string := regex_match.get_string("in_parameter")
+			items.append({"in_parameter": _parse_parameter_format(parameter_string)})
+		elif regex_match.names.has("out_parameter"):
+			var parameter_string := regex_match.get_string("out_parameter")
+			items.append({"out_parameter": _parse_parameter_format(parameter_string)})
+	return items
+
+
+static func _parse_parameter_format(parameter_format: String) -> Dictionary:
+	var parameter_name: String
+	var parameter_type_str: String
+	var parameter_type: Variant.Type
+	var split := parameter_format.split(":", true, 1)
+
+	if len(split) == 0:
+		return {}
+
+	if len(split) > 0:
+		parameter_name = split[0].strip_edges()
+
+	if len(split) > 1:
+		parameter_type_str = split[1].strip_edges()
+
+	if parameter_type_str:
+		parameter_type = Types.STRING_TO_VARIANT_TYPE[parameter_type_str]
+
+	return {"name": parameter_name, "type": parameter_type}
+
+
+static func has_category(block_definition, category: String) -> bool:
+	return block_definition.category == category

addons/block_code/code_generation/block_extension.gd

@@ -0,0 +1,7 @@
+@tool
+class_name BlockExtension
+extends Object
+
+
+func get_defaults_for_node(context_node: Node) -> Dictionary:
+	return {}