Need Help!

How could I make it so someone’s oxygen level is depleted if they are in a specific room? Thanks for any help.

You can give the player an oxygen level property and use an every turn rule to decrease it or set it to 0 when the player is in that room:

The player has a number called oxygen level.

Corridor is a room.

Breached Hull is north of Corridor.

When play begins:
	now the oxygen level of the player is 5.
	
Every turn while the location is Breached Hull:
	now the oxygen level of the player is the oxygen level of the player - 1;
	say "DEBUG: oxygen level = [the oxygen level of the player][line break]";
	if the oxygen level of the player is 0:
		end the story saying "You have suffocated";
	else:
		say "You hear your oxygen supply hissing away."
		
Test me with "n / z / z / z / s / z / n".

Thank you for your help!