Change match variable inside match statement

Vitalya_dev

Hello friends.

var i = 0
match i:
	0:
		i += 1
		continue
	1:
		print("cant reach there")

Possible solution

var i = 0
match i:
	0:
		i += 1
		continue
	0, 1:
		print("can reach there")

Any better way ?

xyz

Hello :) Could you elaborate a bit on what exactly you want to achieve with this piece of code?

cybereality

No, it's not a good idea to change looping variables while you are looping, this can cause issues. It may just be a flaw in your logic. Or if the logic requires it, you can use a different control statement like a while loop.

Vitalya_dev

@xyz said: Hello :) Could you elaborate a bit on what exactly you want to achieve with this piece of code?

Hello dear sir:). Something like this. Simple tutorial system with saving progress).

func _start_tutorial(progress):
	match progress:
		some_number:
			tell_player_what_he_must_do()
			while true:
				if player_do_it_bad():
					_start_tutorial(progress)
					return
				if player_do_it_good():
					break
			progress += 1
			continue
		some_number + 1:
			tell_player_what_he_must_do()
			while true:
				if player_do_it_bad():
					_start_tutorial(progress)
					return
				if player_do_it_good():
					break
			progress += 1
			continue

@cybereality said: No, it's not a good idea to change looping variables while you are looping, this can cause issues. It may just be a flaw in your logic. Or if the logic requires it, you can use a different control statement like a while loop.

I guess you right. But to achieve what i want i need two nested while loops which looks messy :(

xyz

@Vitalya_dev said: I guess you right. But to achieve what i want i need two nested while loops which looks messy :(

Far less messy than a while loop nested inside self-incrementing match, nested inside recursive function :) How about something like this:

while progress < progress_max:
	while not player_done_good(progress):
		tell_player_what_to_do(progress)
	progress += 1