Pipes on a Timer

Part of the Projects section of Coddy's Godot journey. Lesson 24 of 36.

Next come the pipes. A pipe is a scene, pipe.tscn: a top half and a bottom half with a gap between them. In pipe.gd it slides left at SPEED pixels per second. Past the left edge it removes itself, so old pipes do not pile up:

position.x -= SPEED * delta
if position.x < -60:
	queue_free()

The scene has a Timer called PipeTimer that fires every 1.6 seconds. In main.gd, connect its timeout signal and make a pipe past the right edge:

func _on_pipe_timer_timeout():
	var pipe = PIPE.instantiate()
	pipe.position = Vector2(700, 180)
	$Pipes.add_child(pipe)

Godot draws nodes in tree order. Pipes comes before Ground, so the ground covers the bottom of every pipe.

Challenge

Medium

Send pipes across the screen.

In pipe.gd, add const SPEED = 160. Move the pipe left every physics frame and remove it once position.x is under -60.
In main.gd, add const PIPE = preload("res://pipe.tscn") and connect $PipeTimer.timeout.
On each timeout, make a pipe at (700, 180) in the Pipes node.

Press Play: pipes slide in from the right. Then Check.

Try it yourself