Godot 4 Migration Plan

Pre-Planning

1. Research GDExtension replacing GDNative
2. Research any breaking changes introduced in GDScript

Deployment

1. Move code onto a 3.x branch
2. Move Godot studio files onto a 3.x branch
3. Fork Godot core, move existing into a 3.x folder
4. Install Godot 4
5. Install Zylann for GD4
6. Rebuild everything
7. Profit

Migration Rollout

How to upgrade to Godot 4? all at once or partial upgrade in phases?

Dev snapshot is ​presently in Alpha 4 release, they state there will be breaking changes between alpha releases due to the fact it is not feature-complete yet.

Partial Migration

Kevin works on v3.x, Jon works on v4; Kevin migrates to v4 when it has stabilized.

Pros	Cons
Kevin can continue learning	Need to maintain separate code repositories for each version
	Risk of diverging alignment and vision
	Kevin will have to throw-away / address even more technical debt when he migrates to v4

Full Migration

Both Kevin and Jonathan migrate to Godot 4 at the same time, no phased upgrade.

Pros	Cons
Kevin and Jonathan can integrate immediately	Breaking changes with new alpha release for Kevin's work
	Lack of tutorials available for Godot 4 front-end (GDScript)