Initial commit based on the work of shmup-01

bullet.gd

@@ -0,0 +1,18 @@
+extends Area2D
+
+@export var speed = -250
+
+func start(pos):
+    position = pos
+
+func _process(delta):
+    position.y += speed * delta
+
+# Signal checks to see if the bullet leaves the viewport then removes bullet.
+func _on_visible_on_screen_notifier_2d_screen_exited() -> void:
+  queue_free()
+
+func _on_area_entered(area: Area2D) -> void:
+  if area.is_in_group("enemies"):
+          area.explode()
+          queue_free()