level now detects (in a very rudimentary way, by checking every frame) whether all blocks have been broken

scenes/level.gd

@@ -0,0 +1,14 @@
+extends Node2D
+
+var _current_level = 1
+var ball_scene = preload("res://balls/basic/ball_basic.tscn")
+
+func _on_button_pressed():
+	var new_ball = ball_scene.instantiate()
+	new_ball.global_position = $GameContent/BallSpawn.global_position
+	$GameContent/Balls.add_child(new_ball)
+
+func _physics_process(delta):
+	if $GameContent/Blocks.get_children().size() == 0:
+		_current_level += 1
+		print("DONE")