Add fade away component, simple AI and shooting

scripts/components/bullet.gd

@@ -0,0 +1,32 @@
+class_name BulletComponent
+extends Node
+
+
+@export var root: Node2D
+@export var direction: Vector2 = Vector2.RIGHT
+@export var speed: float = 10.0
+@export var area2d: Area2D
+@export var visibility_notifier: VisibleOnScreenNotifier2D
+@export var life_time: float = 5.0
+@export var timer: Timer
+
+func _ready() -> void:
+	root = get_parent()
+	visibility_notifier.screen_exited.connect(_on_screen_exited)
+	area2d.body_entered.connect(on_area2d_body_entered)
+	
+	timer.wait_time = life_time
+	timer.timeout.connect(on_timer_timeout)
+
+func _physics_process(delta: float) -> void:
+	root.position += direction * speed * delta
+		
+func _on_screen_exited() -> void:
+	root.queue_free()
+	
+func on_area2d_body_entered(_body: Node2D) -> void:
+	root.queue_free()
+	
+	
+func on_timer_timeout() -> void:
+	root.queue_free()