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If a timer already exists with a given id, stop and replace it with the new one

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oakes
2014-05-20 18:16:17 -04:00
parent a529a19ef2
commit 9601600051
1 changed files with 6 additions and 2 deletions
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8
src/play_clj/core_utils.clj
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@@ -100,13 +100,17 @@ specified path.
(defn ^:private create-and-add-timer! (defn ^:private create-and-add-timer!
[{:keys [update-fn!] :as screen} id] [{:keys [update-fn!] :as screen} id]
(when-let [timer (timer*)] (some-> (get-in screen [:timers id]) .stop)
(let [timer (timer*)]
(update-fn! assoc-in [[:timers id] timer]) (update-fn! assoc-in [[:timers id] timer])
timer)) timer))
(defn add-timer! (defn add-timer!
"Returns a [Timer](http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/utils/Timer.html) "Returns a [Timer](http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/utils/Timer.html)
that runs the :on-timer function according to the given arguments. which runs which will fire the :on-timer function one or more times (depending
on the given arguments). In the :on-timer function, the id will be passed in the
screen map. If a timer with that id already exists in the screen, it will be
stopped and replaced with a new timer.
; wait 2 seconds and run once ; wait 2 seconds and run once
(add-timer! screen :spawn-enemy 2) (add-timer! screen :spawn-enemy 2)