A Checkpoint

Part of the Signals and Collisions section of Coddy's Godot journey. Lesson 20 of 27.

A checkpoint changes where the spikes send you. So the start point becomes a variable at the top of main.gd, where every function can reach it:

var start_point = Vector2(80, 280)

func _on_spikes_body_entered(body):
	body.position = start_point

The spikes send you to whatever start_point holds at that moment. Change the variable, and the next hit sends you there.

Change it with start_point = .... Writing var start_point = ... inside a function makes a new variable that exists only in that function. The one at the top stays the same.

Challenge

Medium

When you reach the flag:

Set start_point to the checkpoint's position, $Checkpoint.position.
Turn the flag mint: $Checkpoint.modulate = Color(0.49, 0.95, 0.75).

Touch the flag, then the spikes. You should come back at the flag.

Try it yourself

extends Node2D

var start_point = Vector2(80, 280)

func _ready():
	$Spikes.body_entered.connect(_on_spikes_body_entered)
	$Checkpoint.body_entered.connect(_on_checkpoint_body_entered)

func _on_spikes_body_entered(body):
	body.position = start_point

func _on_checkpoint_body_entered(body):
	pass

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Signals and Collisions

Practice on your own: Godot playground