added fireballs

scripts/items/fireball.gd

@@ -0,0 +1,23 @@
+extends RigidBody2D
+@onready var timer = $Timer
+var enter_count = 0
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	timer.start()
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	pass
+
+func _on_timer_timeout():
+	queue_free()
+
+func _on_area_2d_body_entered(body):
+	enter_count += 1
+	if enter_count > 2:
+		queue_free()
+
+func _on_enemie_die_body_entered(body):
+	body.f_die()
+	queue_free()