MainLoop can no longer provide an exit code when it quits.

[jamie-pate]

Tested versions

• Reproducible in 4.3-dev5
• Reproducible in 4.2.1-stable

System information

Godot v4.2.1.stable - Ubuntu 22.04.4 LTS 22.04 - X11 - Vulkan (Forward+) - integrated Intel(R) Graphics (ADL GT2) () - 12th Gen Intel(R) Core(TM) i7-12700H (14 Threads)

Issue description

60d2c1f removed OS.set_exit_code() but it had a valid use case for setting the exit code from MainLoop.

I suggest adding MainLoop.set_exit_code() since MainLoop has no .quit() where you can provide the exit code.

Steps to reproduce

godot -s main_loop.gd

extends MainLoop
func _process(delta):
    # No longer have any way to accomplish this
    # OS.set_exit_code(1)
    # workaround?
    var st := SceneTree.new()
    st.quit(1)
    st.free()
    return true

Minimal reproduction project (MRP)

main_loop_exit_code.zip

[dalexeev]

See:

• Exit MainLoop script with a custom error code godot-proposals#7557
• Refactor OS exit code to be EXIT_SUCCESS by default #89229

[Calinou]

Closing in favor of godotengine/godot-proposals#7557, as feature proposals are tracked on the Godot proposals repository.