Growing up as a Latino with older sisters I am quite accustomed to arguments. The ones I will talk about are new to me however.
As you know I have been working on saving and retrieving my previous Tic Tac Toe games.
Today I have been working on resuming the play from before. Now previously I have provided a message asking if the user wanted to resume the previous play, but I wanted to provide an arguments into main that would allow you to just resume the previous game without the terminal prompting you.
This was new, I have never done this in Clojure before. Thankfully it was not too tough.
(defn -main [& args]
(let [game-id (first args)
last-game (data/get-last-game)
[game id] (continue-last-game? last-game game-id)]
(ui/print-id-and-empty-board id (:board game))
(loop [game game]
(let [game (gm/play-round game)]
(if (board/game-over? game)
(gm/complete-game game)
(recur game))))))
Apparently I can just add & argos and it works! I did have to change my continue-last-game function in order to return both the game id and the game map containing all of the data.
Here is what I turned that into
(defn continue-last-game [last-game]
(ui/print-previous-moves)
(ui/print-resume-game last-game)
last-game)
(defn continue-last-game? [ last-game input-id]
(let [possible? (and last-game (not (board/game-over? last-game)))
last-id (data/last-game-id)
equal-ids (= input-id (str last-id))
continue? (or equal-ids (ui/continue-last-game?))
new-game-id (data/get-next-game-id)]
(if (and possible? continue?)
[(continue-last-game last-game) last-id]
[(start-new-game) new-game-id]
)))
Now they are similarly named but I want to begin with the ?.
I wanted to begin with, is it possible? to even continue. Meaning is there even a last game, and if so is it over? I get the last-ID if it exists. I check to see if my argos is equal to the last ID, with equal-ids.
Then this is where the power of Clojure pays off, I use an or statement to see if the ID’s are equal, if they are then thats all we need, if they are not then prompt the user if they want to resume with ` ui/continue-last-game?`
Now comes the if statement, if it’s possible to continue and if the user wants to continue then we continue the last game with the previous ID. If not then we start a new game with a new ID.
As you can see, continue-last-game prints out the previous moves and the statements to go along with it.
Another day another new thing learned.
Until tomorrow,
Merl