Migration Notes Godot 2 => Godot 3

Migration.md

This Gist was moved into its own Repository at https://github.com/dploeger/godot-migrationnotes

Please fork that repository and send pull request for updates. Thanks!

KinematicBody2D

• v2: move(Vector2)
• v3: move_and_slide(Vector2)

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Hey - saw you mention this on Discord - a couple of corrections:

engine.cfg was renamed to godot.cfg

Project config is in project.godot now

$'/root/baz/buzz'

You don't need quotes around the $ reference path anymore, unless a node name contains a space

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RawArray is now PoolByteArray it seems

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Check: atan2(0,-1) now correctly outputs 180, but was 0 in Godot 2 (?)

I'm considering this to be merely a bug, so I'm not adding it here,
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Moar notes (6+ months old, but anyway): https://hastebin.com/soxarekito.pl

Thanks, I've updated some things but don't know, how up to date many of the notes are now.

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Might want to mention that direct property access/modification is a thing now, as opposed to using setters & getters (unless there's no corresponding property for them, of course).

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Another new thing: you can modify the properties of core classes independently for example when using a tween or as an animation track. For example, if you want to tween only the x position of a sprite you can do:
$Tween.interpolate_property(self, "position:x", position.x, position.x + 100, 2, Tween.TRANS_LINEAR, Tween.EASE_IN)

More info here godotengine/godot#12284

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Thanks, everybody. I've updated the gist.

According to godotengine/godot#15374 (comment)

create or create_from_data() must be called after Image.new()

2.1 :

var img = Image.new()
img.lock()
img.set_pixel(x, y, color) # Works
img.unlock()

3.0

var img = Image.new()
img.create(1, 1, false, Image.FORMAT_RGBA8)
img.lock()
img.set_pixel(x, y, color) # Works
img.unlock()