diff --git a/common/src/play_clj/core.clj b/common/src/play_clj/core.clj
index 108e881..e3050f4 100644
--- a/common/src/play_clj/core.clj
+++ b/common/src/play_clj/core.clj
@@ -1,4 +1,5 @@
 (ns play-clj.core
+  (:require [play-clj.utils :as utils])
   (:import [com.badlogic.gdx Game Gdx Input$Keys Screen]
            [com.badlogic.gdx.graphics Camera Color GL20 OrthographicCamera
             PerspectiveCamera Texture]
@@ -11,9 +12,9 @@
             IsometricTiledMapRenderer
             OrthogonalTiledMapRenderer]))
 
-(load "2d")
-(load "global")
-(load "render")
+(load "core_2d")
+(load "core_global")
+(load "core_render")
 
 (defn find-pos
   [val coll]
diff --git a/common/src/play_clj/2d.clj b/common/src/play_clj/core_2d.clj
similarity index 64%
rename from common/src/play_clj/2d.clj
rename to common/src/play_clj/core_2d.clj
index 5ced4f9..34e4693 100644
--- a/common/src/play_clj/2d.clj
+++ b/common/src/play_clj/core_2d.clj
@@ -25,18 +25,27 @@
 ; textures
 
 (defn image
-  [^String internal-path]
-  (-> internal-path Texture. TextureRegion.))
+  [val]
+  (if (string? val)
+    (-> val Texture. TextureRegion.)
+    (TextureRegion. val)))
 
 (defn split-image
-  ([^String internal-path size]
-    (split-image internal-path size size))
-  ([^String internal-path width height]
-    (-> internal-path image (.split width height))))
+  ([val size]
+    (split-image val size size))
+  ([val width height]
+    (-> val image (.split width height))))
+
+(defn flip-image
+  [val x? y?]
+  (doto (image val) (.flip x? y?)))
 
 (defmacro animation
-  [& args]
-  `(Animation. ~@args))
+  [duration images & args]
+  `(Animation. ~duration
+               (utils/into-gdx-array ~images)
+               (utils/static-field :graphics :g2d :Animation
+                                   ~(or (first args) :normal))))
 
 (defn get-animation-frame
   ([screen ^Animation animation]
diff --git a/common/src/play_clj/global.clj b/common/src/play_clj/core_global.clj
similarity index 100%
rename from common/src/play_clj/global.clj
rename to common/src/play_clj/core_global.clj
diff --git a/common/src/play_clj/render.clj b/common/src/play_clj/core_render.clj
similarity index 100%
rename from common/src/play_clj/render.clj
rename to common/src/play_clj/core_render.clj
diff --git a/common/src/play_clj/utils.clj b/common/src/play_clj/utils.clj
new file mode 100644
index 0000000..768985c
--- /dev/null
+++ b/common/src/play_clj/utils.clj
@@ -0,0 +1,28 @@
+(ns play-clj.utils
+  (:require [clojure.string :as s])
+  (:import [com.badlogic.gdx.utils Array]))
+
+(defn- split-keys
+  [key]
+  (-> key name (s/split #"-")))
+
+(defn- join-keys
+  [keys]
+  (->> keys (map name) (s/join ".") (str "com.badlogic.gdx.")))
+
+(defn static-field*
+  [args]
+  (->> (last args)
+       split-keys
+       (map s/upper-case)
+       (s/join "_")
+       (str (join-keys (butlast args)) "/")
+       symbol))
+
+(defmacro static-field
+  [& args]
+  `~(static-field* args))
+
+(defn into-gdx-array
+  [a]
+  (-> a into-array Array.))