Files
play-clj/src/play_clj/core_utils.clj

135 lines
4.2 KiB
Clojure

(in-ns 'play-clj.core)
; static fields
(defmacro scaling
"Returns a static field from [Scaling](http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/utils/Scaling.html)
(scaling :fill)
(scaling :fill-x)
(scaling :fill-y)
(scaling :fit)
(scaling :none)
(scaling :stretch)
(scaling :stretch-x)
(scaling :stretch-y)"
[k]
`~(u/gdx-field :utils :Scaling k))
(defmacro usage
"Returns a static field in [VertexAttributes.Usage](http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/graphics/VertexAttributes.Usage.html)"
[k]
`~(u/gdx-field :graphics "VertexAttributes$Usage" (u/key->pascal k)))
; timers
(defn ^:private task*
"Internal use only."
[{:keys [execute-fn! on-timer]} id]
(proxy [Timer$Task] []
(run []
(execute-fn! on-timer :id id))))
(defn ^:private timer*
"Internal use only."
[]
(some-> (Class/forName "com.badlogic.gdx.utils.Timer")
(try (catch Exception _))
.newInstance))
(defn ^:private create-and-add-timer!
"Internal use only."
[{:keys [update-fn!] :as screen} id]
(when-let [timer (timer*)]
(update-fn! assoc-in [[:timers id] timer])
timer))
(defn add-timer!
"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
; wait 2 seconds and run once
(add-timer! screen :spawn-enemy 2)
; wait 2 seconds and run forever at 10 second intervals
(add-timer! screen :spawn-enemy 2 10)
; wait 2 seconds, run once, and then run 3 more times at 10 second intervals
(add-timer! screen :spawn-enemy 2 10 3)"
([screen id delay]
(doto (create-and-add-timer! screen id)
(.scheduleTask (task* screen id) delay)))
([screen id delay interval]
(doto (create-and-add-timer! screen id)
(.scheduleTask (task* screen id) delay interval)))
([screen id delay interval repeat]
(doto (create-and-add-timer! screen id)
(.scheduleTask (task* screen id) delay interval repeat))))
(defn remove-timer!
"Stops and removes the timer associated with `id`, returning it or nil if not
found"
[{:keys [update-fn!] :as screen} id]
(when-let [timer (get-in screen [:timers id])]
(.stop timer)
(update-fn! update-in [[:timers] dissoc id])
timer))
; assets
(defn ^:private loader-init
"Internal use only"
[k]
(cond
(contains? #{:atlas-tmx-map :tmx-map} k)
(u/gdx :maps :tiled (str (u/key->pascal k) "Loader."))
(contains? #{:g3d-model :obj} k)
(u/gdx :graphics :g3d :loader (str (u/key->pascal k) "Loader."))
:else
(u/gdx :assets :loaders (str (u/key->pascal k) "Loader."))))
(defmacro loader
"Returns a subclass of [AsynchronousAssetLoader](http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/assets/loaders/AsynchronousAssetLoader.html)
(loader :atlas-tmx-map \"map.atlas\")
(loader :tmx-map \"map.tmx\")
(loader :obj \"model.obj\")
(loader :g3d-model \"cube.g3dj\")
(loader :bitmap-font \"arial.fnt\")
(loader :music \"song.ogg\")
(loader :pixmap \"background.png\")
(loader :skin \"uiskin.json\")
(loader :sound \"hit.ogg\")
(loader :texture \"monster.png\")"
[type resolver & options]
`(let [object# (~(loader-init type) ~resolver)]
(u/calls! object# ~@options)))
(defmacro loader!
"Calls a single method in a subclass of [AsynchronousAssetLoader](http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/assets/loaders/AsynchronousAssetLoader.html)
(loader! object :load \"map.tmx\")"
[object & options]
`(u/call! ~object ~@options))
(defn asset-manager*
"The function version of `asset-manager`"
([]
(AssetManager.))
([resolver]
(AssetManager. resolver)))
(defmacro asset-manager
"Returns an [AssetManager](http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/assets/AssetManager.html)
(asset-manager)"
[& options]
`(let [^AssetManager object# (asset-manager*)]
(u/calls! object# ~@options)))
(defmacro asset-manager!
"Calls a single method in an `asset-manager`
(asset-manager! object :clear)"
[object k & options]
`(let [^AssetManager object# ~object]
(u/call! object# ~k ~@options)))