Hey.
Um, to make a turn-based game, you mean?
If thats the case, all you need to do is use variables.
Make a variable like "players turn"
If its on, your actions do something.

I have a problem with my final project. My final project is antagonistic game and I don't know how to make character fight by turn. So can you tell me what shoud I do? Hope you reply soon. Thanks.