Added enemy movement

game/entities/ships/enemies/abstract_enemy_ship.gd

@@ -2,7 +2,26 @@ class_name AbstractEnemyShip
 extends AbstractShip
 
 
+@onready var controller : EnemyController = $EnemyController
+
+
+var is_on_screen : bool = false
+
+
 func _ready() -> void:
 	super._ready()
 	for weapon in _weapons:
 		weapon.set_belonging(AbstractWeapon.Belonging.ENEMY)
+
+
+func _on_enemy_controller_shoot() -> void:
+	for weapon in _weapons:
+		weapon.shoot(velocity)
+
+
+func _on_visible_on_screen_notifier_2d_screen_entered() -> void:
+	is_on_screen = true
+
+
+func _on_visible_on_screen_notifier_2d_screen_exited() -> void:
+	is_on_screen = false