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Errata

This document lists any errors and/or corrections to the printed material of the book. This does not indicate errors with the code in this repository, which is tested and updated separately.

NOTE: Page numbers are for the print version. Ebook page numbers may be 2-3 pages lower.

Chapter 1

p.5 - [GRAMMAR] : "There never" -> "There's never"

Chapter 2

p.40 - [CODE] : Missing var. At p.44 "c.screensize" can't be ok without this.

extends Area2D

var screensize = Vector2() ## this line is missing

func pickup():
    queue_free()

p.49 - [CODE] : $MarginContainer/TimeLabel.txt -> $MarginContainer/TimeLabel.text

Chapter 3

p.76 - [MISSING] : Select the Enemy node, click on the "Node" tab, and add the enemy to the "enemies" group

p.76 - [CODE] : Missing indentation.

if area.has_method('pickup'):
    area.pickup()
    if area.type == 'key_red':
        emit_signal('grabbed_key')
    if area.type == 'star':
        emit_signal('win')

Chapter 4

p.121 - [CODE] : missing declaration: var screensize

Now, add this to Main.gd:

export (PackedScene) var Rock

var screensize = Vector2() ## this line is missing

func _ready():
    randomize()
    screensize = get_viewport().get_visible_rect().size
    $Player.screensize = screensize
    for i in range(3):
        spawn_rock(3)

Chapter 5

p.168 - [MISSING] : missing suggested values for player properties

In the Inspector, set the run_speed, jump_speed, and gravity to values of 150, -300, and 750 respectively.

p.169 - [CODE] : missing newline character:

if state == JUMP and velocity.y > 0:
    new_anim = 'jump_down'

p.169 - [FORMATTING] : header text is misplaced

Testing the moves