Block: Handle bottom_snap property directly

Godot knows how to serialize a reference to a node directly, so there's
no need to store a path and restore the node manually. This is clearer,
but it also means that bottom_snap can be used without waiting for it
the Block to be ready.

Author: dbnicholson

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

@@ -21,16 +21,13 @@ signal modified
 @export var category: String
 
 ## The next block in the line of execution (can be null if end)
-@export var bottom_snap_path: NodePath
+@export var bottom_snap: SnapPoint
 
 ## The scope of the block (statement of matching entry block)
 @export var scope: String = ""
 
-var bottom_snap: SnapPoint
-
 
 func _ready():
-	bottom_snap = get_node_or_null(bottom_snap_path)
 	mouse_filter = Control.MOUSE_FILTER_IGNORE
 
 

addons/block_code/ui/blocks/control_block/control_block.tscn

@@ -3,14 +3,14 @@
 [ext_resource type="Script" path="res://addons/block_code/ui/blocks/control_block/control_block.gd" id="1_2hbir"]
 [ext_resource type="PackedScene" uid="uid://b1oge52xhjqnu" path="res://addons/block_code/ui/blocks/utilities/snap_point/snap_point.tscn" id="3_nhryi"]
 
-[node name="ControlBlock" type="MarginContainer"]
+[node name="ControlBlock" type="MarginContainer" node_paths=PackedStringArray("bottom_snap")]
 size_flags_horizontal = 0
 mouse_filter = 2
 script = ExtResource("1_2hbir")
 block_name = "control_block"
 label = "Control Block"
 color = Color(0.59979, 0.536348, 0.876215, 1)
-bottom_snap_path = NodePath("VBoxContainer/SnapPoint")
+bottom_snap = NodePath("VBoxContainer/SnapPoint")
 
 [node name="VBoxContainer" type="VBoxContainer" parent="."]
 layout_mode = 2

addons/block_code/ui/blocks/statement_block/statement_block.tscn

@@ -5,13 +5,13 @@
 [ext_resource type="PackedScene" uid="uid://c7puyxpqcq6xo" path="res://addons/block_code/ui/blocks/utilities/drag_drop_area/drag_drop_area.tscn" id="2_owgdx"]
 [ext_resource type="PackedScene" uid="uid://b1oge52xhjqnu" path="res://addons/block_code/ui/blocks/utilities/snap_point/snap_point.tscn" id="3_5vaov"]
 
-[node name="StatementBlock" type="MarginContainer"]
+[node name="StatementBlock" type="MarginContainer" node_paths=PackedStringArray("bottom_snap")]
 size_flags_horizontal = 0
 mouse_filter = 2
 script = ExtResource("1_6wvlf")
 block_name = "statement_block"
 label = "StatementBlock"
-bottom_snap_path = NodePath("VBoxContainer/SnapPoint")
+bottom_snap = NodePath("VBoxContainer/SnapPoint")
 
 [node name="VBoxContainer" type="VBoxContainer" parent="."]
 layout_mode = 2