diff --git a/src/play_clj/physics.clj b/src/play_clj/g2d_physics.clj
similarity index 95%
rename from src/play_clj/physics.clj
rename to src/play_clj/g2d_physics.clj
index d797eed..0f34e7d 100644
--- a/src/play_clj/physics.clj
+++ b/src/play_clj/g2d_physics.clj
@@ -1,4 +1,4 @@
-(ns play-clj.physics
+(ns play-clj.g2d-physics
   (:require [play-clj.math :as m]
             [play-clj.utils :as u])
   (:import [com.badlogic.gdx.physics.box2d World]))
diff --git a/src/play_clj/math.clj b/src/play_clj/math.clj
index 348c89e..65dda82 100644
--- a/src/play_clj/math.clj
+++ b/src/play_clj/math.clj
@@ -241,7 +241,7 @@
 (defn matrix-4*
   ([]
     (Matrix4.))
-  ([values]
+  ([^floats values]
     (Matrix4. values)))
 
 (defmacro matrix-4
@@ -255,7 +255,7 @@
 ; plane
 
 (defn plane*
-  [normal ^double d]
+  [^Vector3 normal ^double d]
   (Plane. normal d))
 
 (defmacro plane