game: add simple damage-numbers scene

scenes/damage_numbers.tscn

@@ -0,0 +1,72 @@
+[gd_scene load_steps=5 format=3 uid="uid://p7ih16elqja4"]
+
+[ext_resource type="Script" uid="uid://dri8n7vfnarub" path="res://scenes/damage_numbers.gd" id="1_bhj6t"]
+
+[sub_resource type="Animation" id="Animation_ngvhj"]
+resource_name = "normal_damage"
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Control/Label:position")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 1),
+"transitions": PackedFloat32Array(0.148651, 0.148651),
+"update": 0,
+"values": [Vector2(-9.5, -11.5), Vector2(-9, -82)]
+}
+
+[sub_resource type="Animation" id="Animation_bhj6t"]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Control/Label:position")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 0,
+"values": [Vector2(0, -248)]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_0otjp"]
+_data = {
+&"RESET": SubResource("Animation_bhj6t"),
+&"normal_damage": SubResource("Animation_ngvhj")
+}
+
+[node name="DamageNumbers" type="Node2D"]
+script = ExtResource("1_bhj6t")
+
+[node name="Control" type="Control" parent="."]
+layout_mode = 3
+anchors_preset = 0
+offset_right = 40.0
+offset_bottom = 40.0
+
+[node name="Label" type="Label" parent="Control"]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -29.5
+offset_top = -31.5
+offset_right = -10.5
+offset_bottom = -8.5
+grow_horizontal = 2
+grow_vertical = 2
+size_flags_horizontal = 4
+text = "50"
+horizontal_alignment = 1
+vertical_alignment = 1
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="Control"]
+root_node = NodePath("../..")
+libraries = {
+&"": SubResource("AnimationLibrary_0otjp")
+}