tried to implement soun logic for coin

entity/coin_copper/coin_copper.gd

@@ -0,0 +1,41 @@
+#extends RigidBody2D
+#
+#
+## Called when the node enters the scene tree for the first time.
+#func _ready():
+#	pass # Replace with function body.
+#
+#
+## Called every frame. 'delta' is the elapsed time since the previous frame.
+
+
+extends RigidBody2D
+
+@export var sound_touch: AudioStreamPlayer
+
+var touched=false
+var was_sleeping: bool = false
+
+func set_touched():
+	touched=true
+
+func _on_sleeping_state_changed():
+	was_sleeping = true
+
+func _on_body_entered(body):
+	
+	print("touch")
+	if not was_sleeping:
+		if touched==false and $Timer.is_stopped():
+			print(str(self)+" hits "+str(body))
+			#$sound_touch.play()
+			$Timer.start()
+		var other_node=body
+		if other_node.has_method("set_touched"):
+			other_node.set_touched()
+
+func _on_body_exited(body):
+	touched=false
+
+
+

entity/coin_copper/coin_copper.tscn

@@ -1,22 +1,28 @@
-[gd_scene load_steps=7 format=3 uid="uid://c3kitncwpi42j"]
+[gd_scene load_steps=9 format=3 uid="uid://c3kitncwpi42j"]
 
 [ext_resource type="PhysicsMaterial" uid="uid://c6kn1an85lccr" path="res://entity/coin_physics_material.tres" id="1_1fypc"]
+[ext_resource type="Script" path="res://entity/coin_copper/coin_copper.gd" id="2_1r8w3"]
 [ext_resource type="Texture2D" uid="uid://dbdkb4vt7dh85" path="res://entity/coin_copper/coin_copper_4.png" id="2_4pvkj"]
 [ext_resource type="Texture2D" uid="uid://2vtvoj6ua3cb" path="res://entity/coin_copper/coin_copper_outline_2.png" id="3_dq1f7"]
 [ext_resource type="PackedScene" uid="uid://bk1vvq5rug01m" path="res://collector/collectible.tscn" id="4_npwn2"]
 [ext_resource type="PackedScene" uid="uid://ujpra0s1kpqi" path="res://value/valuable.tscn" id="5_fd0r7"]
+[ext_resource type="AudioStream" uid="uid://wy7f2j0wg1ur" path="res://audio/tap/click5.wav" id="7_fxd28"]
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_c6byl"]
 size = Vector2(14, 3)
 
-[node name="CoinCopper" type="RigidBody2D"]
+[node name="CoinCopper" type="RigidBody2D" node_paths=PackedStringArray("sound_touch")]
 collision_layer = 5
 collision_mask = 7
 inertia = 1000.0
 physics_material_override = ExtResource("1_1fypc")
 continuous_cd = 1
+max_contacts_reported = 1
+contact_monitor = true
 linear_damp = 0.1
 angular_damp = 0.1
+script = ExtResource("2_1r8w3")
+sound_touch = NodePath("sound_touch")
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="."]
 scale = Vector2(2, 2)
@@ -37,4 +43,15 @@ type = &"Copper"
 [node name="Valuable" parent="." instance=ExtResource("5_fd0r7")]
 value = 1
 
+[node name="sound_touch" type="AudioStreamPlayer" parent="."]
+stream = ExtResource("7_fxd28")
+volume_db = -24.397
+
+[node name="Timer" type="Timer" parent="."]
+wait_time = 2.108
+one_shot = true
+
+[connection signal="body_entered" from="." to="." method="_on_body_entered"]
+[connection signal="body_exited" from="." to="." method="_on_body_exited"]
+[connection signal="sleeping_state_changed" from="." to="." method="_on_sleeping_state_changed"]
 [connection signal="collected" from="Collectible" to="Collectible" method="_on_done"]

game/game.tscn

@@ -77,7 +77,7 @@ shape = SubResource("RectangleShape2D_rh35r")
 debug_color = Color(0, 0.6, 0.701961, 0)
 
 [node name="CopperConverter" parent="." instance=ExtResource("7_ipeok")]
-position = Vector2(131, 199)
+position = Vector2(136, 165)
 metadata/_edit_group_ = true
 
 [node name="Spawner" parent="CopperConverter" index="6" node_paths=PackedStringArray("target")]