Convert demos to Godot 4 using regular expressions in a script

plugins/addons/material_creator/material_creator.gd

@@ -1,4 +1,4 @@
-tool
+@tool
 extends Panel
 # In this file, the word "silly" is used to make it obvious that the name is arbitrary.
 
@@ -7,20 +7,20 @@ var editor_interface
 
 func _ready():
 	# Connect all of the signals we'll need to save and load silly materials
-	get_node("VBoxContainer/ApplyButton").connect("pressed", self, "apply_pressed")
-	get_node("VBoxContainer/SaveButton").connect("pressed", self, "save_pressed")
-	get_node("VBoxContainer/LoadButton").connect("pressed", self, "load_pressed")
-	get_node("SaveMaterialDialog").connect("file_selected", self, "save_file_selected")
-	get_node("LoadMaterialDialog").connect("file_selected", self, "load_file_selected")
-	VisualServer.canvas_item_set_clip(get_canvas_item(), true)
+	get_node(^"VBoxContainer/ApplyButton").connect(&"pressed", self.apply_pressed)
+	get_node(^"VBoxContainer/SaveButton").connect(&"pressed", self.save_pressed)
+	get_node(^"VBoxContainer/LoadButton").connect(&"pressed", self.load_pressed)
+	get_node(^"SaveMaterialDialog").connect(&"file_selected", self.save_file_selected)
+	get_node(^"LoadMaterialDialog").connect(&"file_selected", self.load_file_selected)
+	RenderingServer.canvas_item_set_clip(get_canvas_item(), true)
 
 
 func save_pressed():
-	get_node("SaveMaterialDialog").popup_centered()
+	get_node(^"SaveMaterialDialog").popup_centered()
 
 
 func load_pressed():
-	get_node("LoadMaterialDialog").popup_centered()
+	get_node(^"LoadMaterialDialog").popup_centered()
 
 
 func apply_pressed():
@@ -32,7 +32,7 @@ func apply_pressed():
 
 	var material = _silly_resource_from_values().make_material()
 	# Go through the selected nodes and see if they have the "set_surface_material"
-	# function (which only MeshInstance has by default). If they do, then set the material
+	# function (which only MeshInstance3D has by default). If they do, then set the material
 	# to the silly material.
 	for node in selected_nodes:
 		if node.has_method("set_surface_material"):
@@ -71,9 +71,9 @@ func load_file_selected(path):
 			file.close()
 			return false
 
-		get_node("VBoxContainer/AlbedoColorPicker").color = silly_resource.albedo_color
-		get_node("VBoxContainer/MetallicSlider").value = silly_resource.metallic_strength
-		get_node("VBoxContainer/RoughnessSlider").value = silly_resource.roughness_strength
+		get_node(^"VBoxContainer/AlbedoColorPicker").color = silly_resource.albedo_color
+		get_node(^"VBoxContainer/MetallicSlider").value = silly_resource.metallic_strength
+		get_node(^"VBoxContainer/RoughnessSlider").value = silly_resource.roughness_strength
 
 		# Close the file and return true (success!)
 		file.close()
@@ -85,9 +85,9 @@ func load_file_selected(path):
 
 func _silly_resource_from_values():
 	# Get the values from the sliders and color picker
-	var color = get_node("VBoxContainer/AlbedoColorPicker").color
-	var metallic = get_node("VBoxContainer/MetallicSlider").value
-	var roughness = get_node("VBoxContainer/RoughnessSlider").value
+	var color = get_node(^"VBoxContainer/AlbedoColorPicker").color
+	var metallic = get_node(^"VBoxContainer/MetallicSlider").value
+	var roughness = get_node(^"VBoxContainer/RoughnessSlider").value
 	# Make a new silly resource (which in this case actually is a node) and initialize it
 	var silly_resource = silly_material_resource.new()
 	silly_resource.init()

plugins/addons/material_creator/material_dock.tscn

@@ -3,9 +3,9 @@
 [ext_resource path="res://addons/material_creator/material_creator.gd" type="Script" id=1]
 
 [node name="Material Creator Plugin" type="Panel"]
-margin_right = 220.0
-margin_bottom = 340.0
-rect_min_size = Vector2( 210, 410 )
+offset_right = 220.0
+offset_bottom = 340.0
+rect_min_size = Vector2(210, 410)
 script = ExtResource( 1 )
 __meta__ = {
 "_edit_use_anchors_": false
@@ -15,95 +15,95 @@ __meta__ = {
 anchor_left = 0.5
 anchor_right = 0.5
 anchor_bottom = 1.0
-margin_left = -100.0
-margin_right = 100.0
-rect_min_size = Vector2( 0, 400 )
+offset_left = -100.0
+offset_right = 100.0
+rect_min_size = Vector2(0, 400)
 
 [node name="DockName" type="Label" parent="VBoxContainer"]
-margin_right = 200.0
-margin_bottom = 30.0
-rect_min_size = Vector2( 200, 30 )
+offset_right = 200.0
+offset_bottom = 30.0
+rect_min_size = Vector2(200, 30)
 custom_constants/shadow_as_outline = 1
 text = "Material creator"
 align = 1
 valign = 2
 
 [node name="AlbedoLabel" type="Label" parent="VBoxContainer"]
-margin_top = 34.0
-margin_right = 200.0
-margin_bottom = 64.0
-rect_min_size = Vector2( 200, 30 )
+offset_top = 34.0
+offset_right = 200.0
+offset_bottom = 64.0
+rect_min_size = Vector2(200, 30)
 text = "Albedo color"
 align = 1
 valign = 2
 
 [node name="AlbedoColorPicker" type="ColorPickerButton" parent="VBoxContainer"]
-margin_top = 68.0
-margin_right = 200.0
-margin_bottom = 98.0
-rect_min_size = Vector2( 200, 30 )
-color = Color( 1, 1, 1, 1 )
+offset_top = 68.0
+offset_right = 200.0
+offset_bottom = 98.0
+rect_min_size = Vector2(200, 30)
+color = Color(1, 1, 1, 1)
 
 [node name="MetallicLabel" type="Label" parent="VBoxContainer"]
-margin_top = 102.0
-margin_right = 200.0
-margin_bottom = 132.0
-rect_min_size = Vector2( 200, 30 )
+offset_top = 102.0
+offset_right = 200.0
+offset_bottom = 132.0
+rect_min_size = Vector2(200, 30)
 text = "Metallic strength"
 align = 1
 valign = 2
 
 [node name="MetallicSlider" type="HSlider" parent="VBoxContainer"]
-margin_top = 136.0
-margin_right = 200.0
-margin_bottom = 166.0
-rect_min_size = Vector2( 200, 30 )
+offset_top = 136.0
+offset_right = 200.0
+offset_bottom = 166.0
+rect_min_size = Vector2(200, 30)
 max_value = 1.0
 step = 0.05
 
 [node name="RoughnessLabel" type="Label" parent="VBoxContainer"]
-margin_top = 170.0
-margin_right = 200.0
-margin_bottom = 200.0
-rect_min_size = Vector2( 200, 30 )
+offset_top = 170.0
+offset_right = 200.0
+offset_bottom = 200.0
+rect_min_size = Vector2(200, 30)
 text = "Roughness strength"
 align = 1
 valign = 2
 
 [node name="RoughnessSlider" type="HSlider" parent="VBoxContainer"]
-margin_top = 204.0
-margin_right = 200.0
-margin_bottom = 234.0
-rect_min_size = Vector2( 200, 30 )
+offset_top = 204.0
+offset_right = 200.0
+offset_bottom = 234.0
+rect_min_size = Vector2(200, 30)
 max_value = 1.0
 step = 0.05
 ticks_on_borders = true
 
 [node name="HSeparator" type="HSeparator" parent="VBoxContainer"]
-margin_top = 238.0
-margin_right = 200.0
-margin_bottom = 258.0
-rect_min_size = Vector2( 200, 20 )
+offset_top = 238.0
+offset_right = 200.0
+offset_bottom = 258.0
+rect_min_size = Vector2(200, 20)
 
 [node name="ApplyButton" type="Button" parent="VBoxContainer"]
-margin_top = 262.0
-margin_right = 200.0
-margin_bottom = 312.0
-rect_min_size = Vector2( 200, 50 )
+offset_top = 262.0
+offset_right = 200.0
+offset_bottom = 312.0
+rect_min_size = Vector2(200, 50)
 text = "Apply material"
 
 [node name="SaveButton" type="Button" parent="VBoxContainer"]
-margin_top = 316.0
-margin_right = 200.0
-margin_bottom = 366.0
-rect_min_size = Vector2( 200, 50 )
+offset_top = 316.0
+offset_right = 200.0
+offset_bottom = 366.0
+rect_min_size = Vector2(200, 50)
 text = "Save material"
 
 [node name="LoadButton" type="Button" parent="VBoxContainer"]
-margin_top = 370.0
-margin_right = 200.0
-margin_bottom = 420.0
-rect_min_size = Vector2( 200, 50 )
+offset_top = 370.0
+offset_right = 200.0
+offset_bottom = 420.0
+rect_min_size = Vector2(200, 50)
 text = "Load material"
 clip_text = true
 
@@ -111,8 +111,8 @@ clip_text = true
 visible = false
 anchor_right = 1.0
 anchor_bottom = 1.0
-margin_bottom = -10.0
-rect_min_size = Vector2( 0, 50 )
+offset_bottom = -10.0
+rect_min_size = Vector2(0, 50)
 text = "Load silly material and
 apply to selected node(s)"
 align = 1
@@ -120,20 +120,20 @@ valign = 1
 autowrap = true
 
 [node name="SaveMaterialDialog" type="FileDialog" parent="."]
-margin_left = 150.0
-margin_top = 20.0
-margin_right = 600.0
-margin_bottom = 360.0
+offset_left = 150.0
+offset_top = 20.0
+offset_right = 600.0
+offset_bottom = 360.0
 resizable = true
-filters = PoolStringArray( "*.silly_mat" )
+filters = PackedStringArray("*.silly_mat")
 
 [node name="LoadMaterialDialog" type="FileDialog" parent="."]
-margin_left = 150.0
-margin_top = 20.0
-margin_right = 600.0
-margin_bottom = 360.0
-rect_min_size = Vector2( 200, 100 )
+offset_left = 150.0
+offset_top = 20.0
+offset_right = 600.0
+offset_bottom = 360.0
+rect_min_size = Vector2(200, 100)
 window_title = "Open a File"
 resizable = true
 mode = 0
-filters = PoolStringArray( "*.silly_mat" )
+filters = PackedStringArray("*.silly_mat")

plugins/addons/material_creator/material_plugin.gd

@@ -8,13 +8,13 @@
 # This example should be replaced when EditorImportPlugin and EditorExportPlugin are both
 # fully working and you can save custom resources.
 
-tool
+@tool
 extends EditorPlugin
 
 var io_material_dialog
 
 func _enter_tree():
-	io_material_dialog = preload("res://addons/material_creator/material_dock.tscn").instance()
+	io_material_dialog = preload("res://addons/material_creator/material_dock.tscn").instantiate()
 	io_material_dialog.editor_interface = get_editor_interface()
 	add_control_to_dock(DOCK_SLOT_LEFT_UL, io_material_dialog)
 

plugins/addons/material_creator/material_resource.gd

@@ -1,4 +1,4 @@
-tool
+@tool
 extends Node
 
 # NOTE: in theory this would extend from resource, but until saving and loading resources
@@ -30,13 +30,15 @@ func make_json():
 	json_dict["metallic_strength"] = metallic_strength
 	json_dict["roughness_strength"] = roughness_strength
 
-	return to_json(json_dict)
+	return JSON.new().stringify(json_dict)
 
 
 # Convert the passed in string to a json dictonary, and then
 # fill in our data.
 func from_json(json_dict_as_string):
-	var json_dict = parse_json(json_dict_as_string)
+	var json = JSON.new()
+	json.parse(json_dict_as_string)
+	var json_dict = json.get_data()
 
 	albedo_color.r = json_dict["albedo_color"]["r"]
 	albedo_color.g = json_dict["albedo_color"]["g"]
@@ -46,9 +48,9 @@ func from_json(json_dict_as_string):
 	roughness_strength = json_dict["roughness_strength"]
 
 
-# Make a SpatialMaterial using our variables.
+# Make a StandardMaterial3D using our variables.
 func make_material():
-	var mat = SpatialMaterial.new()
+	var mat = StandardMaterial3D.new()
 
 	mat.albedo_color = albedo_color
 	mat.metallic = metallic_strength