Improvements

scripts/v2/creature.gd

@@ -5,6 +5,7 @@ signal damaged(amount)
 signal healed(amount)
 signal death()
 
+@export_category("Creature")
 @export
 var max_hp: int = 1
 
@@ -33,6 +34,8 @@ var hp: int :
 func _ready() -> void:
 	self.hp = self.max_hp
 	self.death.connect(self._creature_on_death)
+	if self.has_method("_on_ready"):
+		self.call("_on_ready")
 
 func take_damage(damage: int) -> void:
 	self.hp -= damage

scripts/v2/enemy.gd

@@ -14,6 +14,12 @@ var state: State = State.IDLE
 @export
 var animation_player: AnimationPlayer
 
+@export
+var sprite: Sprite2D
+
+@export
+var detection_area: Area2D
+
 var _chase_target: Node2D
 var _target_is_left: bool = false
 
@@ -29,9 +35,13 @@ func _play_animation(animation: String) -> void:
 	
 	animation_player.play(animation)
 
+func _on_ready() -> void:
+	self.detection_area.body_entered.connect(self._on_detection_area_entered)
+
 func _process(delta: float) -> void:
 	var animation_name = str(State.keys()[self.state]).to_lower()
 	self._play_animation(animation_name)
+	sprite.flip_h = self._target_is_left
 
 func _physics_process(delta: float) -> void:
 	match self.state:
@@ -39,4 +49,11 @@ func _physics_process(delta: float) -> void:
 			if not self._chase_target:
 				self.state = State.IDLE
 			
-			pass
+			self._target_is_left = self._chase_target.position.x < self.position.x
+
+func _on_detection_area_entered(body: CollisionObject2D) -> void:
+	match state:
+		State.IDLE:
+			if body is Player:
+				self._chase_target = body
+				self.state = State.CHASE