Made a menu to select abilities and grant them (with a few hardcoded stuff)

menus/scenes/components/AbilitySelection.cs

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+using System;
+using Godot;
+using Movementtests.systems;
+
+[Tool, GlobalClass]
+public partial class AbilitySelection : Control
+{
+    [Signal] public delegate void AbilityAddedEventHandler(WeaponSystem.WeaponEvent forEvent, string abilityName);
+    
+    [Export] public WeaponSystem.WeaponEvent ForEvent { get; set; } = WeaponSystem.WeaponEvent.StartedFlying;
+    
+    private string _title = string.Empty;
+    [Export] public string Title {
+        get => _title;
+        set
+        {
+            _title = value;
+            TitleChanged();
+        }
+    }
+    
+    [Export] public PackedScene AbilitySelectionItem { get; set; }
+
+    private VBoxContainer _abilities;
+    private MenuButton _addAbility;
+    private PopupMenu _addAbilityMenu;
+    
+    public override void _Ready()
+    {
+        _abilities = GetNode<VBoxContainer>("%SelectedAbilities");
+        _addAbility = GetNode<MenuButton>("%AddAbility");
+        _addAbilityMenu = _addAbility.GetPopup();
+        
+        _addAbilityMenu.IdPressed += AddAbilityMenuOnIdPressed;
+        _addAbilityMenu.IndexPressed += AddAbilityMenuOnIndexPressed;
+    }
+
+    private void AddAbilityMenuOnIndexPressed(long index)
+    {
+        var indexInt = Convert.ToInt32(index);
+        var metadata = _addAbilityMenu.GetItemMetadata(indexInt);
+        var name = _addAbilityMenu.GetItemText(indexInt);
+        EmitSignalAbilityAdded(ForEvent, name);
+    }
+
+    private void AddAbilityMenuOnIdPressed(long id)
+    {
+    }
+
+    public void TitleChanged()
+    {
+        var titleLabel = GetNode<Label>("%TitleLabel");
+        titleLabel.Text = Title;
+    }
+}

menus/scenes/components/AbilitySelection.cs.uid

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+uid://5emed8iegtui

menus/scenes/components/ability_selection.tscn

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+[gd_scene format=3 uid="uid://dmv685sskgh3l"]
+
+[ext_resource type="Script" uid="uid://5emed8iegtui" path="res://menus/scenes/components/AbilitySelection.cs" id="1_fcxyu"]
+[ext_resource type="Texture2D" uid="uid://by5v33lu8v1fm" path="res://assets/ui/input-prompts/Flairs/Vector/flair_plus.svg" id="2_uf3m5"]
+[ext_resource type="Texture2D" uid="uid://c2akxlg7tdb67" path="res://assets/ui/IconGodotNode/node/icon_projectile.png" id="3_41pdy"]
+
+[node name="AbilitySelection" type="MarginContainer" unique_id=1373426933]
+size_flags_horizontal = 3
+theme_override_constants/margin_left = 4
+theme_override_constants/margin_top = 4
+theme_override_constants/margin_right = 4
+theme_override_constants/margin_bottom = 4
+script = ExtResource("1_fcxyu")
+
+[node name="HBoxContainer" type="VBoxContainer" parent="." unique_id=364343452]
+layout_mode = 2
+
+[node name="TitleLabel" type="Label" parent="HBoxContainer" unique_id=8350369]
+unique_name_in_owner = true
+layout_mode = 2
+
+[node name="SelectedAbilities" type="VBoxContainer" parent="HBoxContainer" unique_id=1173689490]
+unique_name_in_owner = true
+layout_mode = 2
+
+[node name="MarginContainer" type="MarginContainer" parent="HBoxContainer" unique_id=51872459]
+layout_mode = 2
+theme_override_constants/margin_left = 4
+theme_override_constants/margin_top = 4
+theme_override_constants/margin_right = 4
+theme_override_constants/margin_bottom = 4
+
+[node name="PanelContainer" type="PanelContainer" parent="HBoxContainer/MarginContainer" unique_id=886085404]
+layout_mode = 2
+
+[node name="AddAbility" type="MenuButton" parent="HBoxContainer/MarginContainer/PanelContainer" unique_id=1898027483]
+unique_name_in_owner = true
+layout_mode = 2
+focus_mode = 2
+text = "Add ability"
+icon = ExtResource("2_uf3m5")
+item_count = 1
+popup/item_0/text = "Weapon explosion"
+popup/item_0/icon = ExtResource("3_41pdy")
+popup/item_0/id = 0