Convert demos to Godot 4 using regular expressions in a script

3d/physics_tests/utils/characterbody_physics.gd

@@ -10,7 +10,7 @@ func _physics_process(delta):
 	if is_on_floor():
 		floor_snap_length = 0.2
 	else:
-		motion_velocity += Vector3.DOWN * _gravity * delta
+		velocity += Vector3.DOWN * _gravity * delta
 		floor_snap_length = 0.0
 
 	floor_stop_on_slope = _stop_on_slopes

3d/physics_tests/utils/container_log.gd

@@ -7,7 +7,7 @@ var _entry_template
 
 
 func _enter_tree():
-	Log.connect("entry_logged", Callable(self, "_on_log_entry"))
+	Log.connect(&"entry_logged", Callable(self, "_on_log_entry"))
 
 	_entry_template = get_child(0) as Label
 	remove_child(_entry_template)

3d/physics_tests/utils/control3d.gd

@@ -8,7 +8,7 @@ var _attachment
 
 
 func _ready():
-	_pos_offset = rect_position
+	_pos_offset = position
 	_attachment = get_parent() as Node3D
 
 
@@ -27,4 +27,4 @@ func _process(_delta):
 	var world_pos = world_offset + _attachment.global_transform.origin
 	var screen_pos = camera.unproject_position(world_pos)
 
-	rect_position = _pos_offset + screen_pos - 0.5 * rect_size
+	position = _pos_offset + screen_pos - 0.5 * size

3d/physics_tests/utils/option_menu.gd

@@ -44,7 +44,7 @@ func _add_popup(parent_popup, path, label):
 	parent_popup.add_child(popup_menu)
 	parent_popup.add_submenu_item(label, label)
 
-	popup_menu.connect("index_pressed", Callable(self, "_on_item_pressed"), [popup_menu, path])
+	popup_menu.connect(&"index_pressed", Callable(self, "_on_item_pressed"), [popup_menu, path])
 
 	return popup_menu
 

3d/physics_tests/utils/scroll_log.gd

@@ -1,10 +1,10 @@
 extends ScrollContainer
 
 
-@export var auto_scroll = false
+@export var auto_scroll: bool = false
 
 
 func _process(_delta):
 	if auto_scroll:
-		var scrollbar = get_v_scrollbar()
+		var scrollbar = get_v_scroll_bar()
 		scrollbar.value = scrollbar.max_value