update root unit node to CharacterBody3D and fix selection logic

assets/models/ant.glb.import

@@ -13,7 +13,7 @@ dest_files=["res://.godot/imported/ant.glb-2bc83283752a3a739ab3e737bef4a96c.scn"
 
 [params]
 
-nodes/root_type="StaticBody3D"
+nodes/root_type="CharacterBody3D"
 nodes/root_name="TestUnit"
 nodes/apply_root_scale=true
 nodes/root_scale=1.0

scenes/units/test_unit.tscn

@@ -1,5 +1,6 @@
-[gd_scene load_steps=4 format=3 uid="uid://cfixshlmwhpmi"]
+[gd_scene load_steps=5 format=3 uid="uid://cfixshlmwhpmi"]
 
+[ext_resource type="Script" path="res://scripts/units/test_unit.gd" id="1_e76lg"]
 [ext_resource type="PackedScene" uid="uid://bi231xk2sp410" path="res://assets/models/ant.glb" id="1_ff64u"]
 [ext_resource type="Texture2D" uid="uid://dehqm00kiljut" path="res://assets/textures/selection_unit_decal.png" id="2_5725f"]
 
@@ -7,6 +8,7 @@
 radius = 0.25
 
 [node name="TestUnit" instance=ExtResource("1_ff64u")]
+script = ExtResource("1_e76lg")
 
 [node name="CollisionShape3D" type="CollisionShape3D" parent="." index="2"]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.25, 0)
@@ -17,3 +19,5 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.0021804, 0.00953716, -0.00
 pixel_size = 0.0055
 axis = 1
 texture = ExtResource("2_5725f")
+
+[node name="NavigationAgent3D" type="NavigationAgent3D" parent="." index="4"]

scripts/selector.gd

@@ -97,7 +97,7 @@ func _on_frustrum_area_unit_entered(unit: Node3D) -> void:
 	if visible_units.keys().has(unit_id):
 		return
 	
-	visible_units[unit_id] = unit.get_parent()
+	visible_units[unit_id] = unit
 
 
 func _on_frustrum_area_unit_exited(unit: Node3D) -> void:

scripts/units/test_unit.gd

@@ -1,4 +1,4 @@
-extends Node3D
+extends CharacterBody3D
 class_name TestUnit
 
 var selected: bool = false