Add collector entity

collector/collectible.gd

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+extends Node
+class_name Collectible
+
+enum CollectibleType {
+	UNSET,
+	COIN_COPPER,
+	COIN_SILVER,
+	COIN_GOLD,
+	GEM,
+	DIAMOND,
+	COAL,
+	CROWN,
+	SUPERCROWN,
+}
+
+@export var type: CollectibleType
+
+signal collected
+
+
+func collect():
+	emit_signal("collected")
+	get_parent().queue_free()

collector/collectible.tscn

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+[gd_scene load_steps=2 format=3 uid="uid://bk1vvq5rug01m"]
+
+[ext_resource type="Script" path="res://collector/collectible.gd" id="1_qilbk"]
+
+[node name="Collectible" type="Node"]
+script = ExtResource("1_qilbk")

collector/collector.gd

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+extends Area2D
+class_name Collector
+
+
+var collected_count: int = 0
+
+@export var collecting_types: Array[Collectible.CollectibleType]
+@export_flags_2d_physics var collecting_collision_mask: int
+
+signal collected(what: PhysicsBody2D)
+
+
+func _on_body_entered(body: Node2D):
+	if body is PhysicsBody2D:
+		if body.collision_layer & collecting_collision_mask:
+			var collectible: Collectible = body.get_node("Collectible")
+			if collectible.type in collecting_types:
+				collected_count += 1
+				collectible.collect()
+				emit_signal("collected", body)

collector/collector.tscn

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+[gd_scene load_steps=2 format=3 uid="uid://c5w3b55aiui6c"]
+
+[ext_resource type="Script" path="res://collector/collector.gd" id="1_1xtt5"]
+
+[node name="Collector" type="Area2D"]
+script = ExtResource("1_1xtt5")
+
+[connection signal="body_entered" from="." to="." method="_on_body_entered"]