Trying to add new enemy

Enemies/Ghost_Enemy.gd

@@ -0,0 +1,16 @@
+extends KinematicBody2D
+
+
+# Declare member variables here. Examples:
+# var a: int = 2
+# var b: String = "text"
+onready var animation_player: AnimationPlayer = get_node("AnimationPlayer")
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+    animation_player.play("appear")
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+#func _process(delta: float) -> void:
+#  pass