diff --git a/src/net/torvald/terrarum/StateInGame.kt b/src/net/torvald/terrarum/StateInGame.kt
index 0802ee69e..b636799cb 100644
--- a/src/net/torvald/terrarum/StateInGame.kt
+++ b/src/net/torvald/terrarum/StateInGame.kt
@@ -59,9 +59,9 @@ constructor() : BasicGameState() {
     lateinit var debugWindow: UIHandler
     lateinit var notifier: UIHandler
 
-    lateinit internal var playerWrapper: PossessedPlayerWrapper
+    lateinit internal var playableActorWrapper: PlayableActorWrapper
     internal val player: ActorHumanoid // currently POSSESSED actor :)
-        get() = playerWrapper.actor
+        get() = playableActorWrapper.actor
 
     //private var GRADIENT_IMAGE: Image? = null
     //private var skyBox: Rectangle? = null
@@ -126,7 +126,7 @@ constructor() : BasicGameState() {
 
 
         // add new player and put it to actorContainer
-        playerWrapper = PossessedPlayerWrapper(PlayerBuilderSigrid.create())
+        playableActorWrapper = PlayableActorWrapper(PlayerBuilderSigrid.create())
         //player = PBCynthia.create()
         //player.setNoClip(true);
         addActor(player)
@@ -244,12 +244,12 @@ constructor() : BasicGameState() {
             changePossession(Player.PLAYER_REF_ID) // TODO completely other behaviour?
     }
 
-    private fun changePossession(newActor: PossessedPlayerWrapper) {
+    private fun changePossession(newActor: PlayableActorWrapper) {
         if (!hasActor(player)) {
             throw IllegalArgumentException("No such actor in actorContainer: $newActor")
         }
 
-        playerWrapper = newActor
+        playableActorWrapper = newActor
         WorldSimulator(world, player, UPDATE_DELTA)
     }
 
@@ -258,7 +258,7 @@ constructor() : BasicGameState() {
             throw IllegalArgumentException("No such actor in actorContainer: $refid")
         }
 
-        playerWrapper = PossessedPlayerWrapper(getActorByID(refid) as ActorHumanoid)
+        playableActorWrapper = PlayableActorWrapper(getActorByID(refid) as ActorHumanoid)
         WorldSimulator(world, player, UPDATE_DELTA)
     }
 
diff --git a/src/net/torvald/terrarum/gameactors/ActorWithBody.kt b/src/net/torvald/terrarum/gameactors/ActorWithBody.kt
index 9318d33eb..f901352f8 100644
--- a/src/net/torvald/terrarum/gameactors/ActorWithBody.kt
+++ b/src/net/torvald/terrarum/gameactors/ActorWithBody.kt
@@ -172,7 +172,7 @@ open class ActorWithBody : Actor() {
     @Transient private val gravitation: Vector2 = world.gravitation
     @Transient val DRAG_COEFF_DEFAULT = 1.2
     /** Drag coefficient. Parachutes have much higher value than bare body (1.2) */
-    private var DRAG_COEFF: Double
+    var dragCoefficient: Double
         get() = actorValue.getAsDouble(AVKey.DRAGCOEFF) ?: DRAG_COEFF_DEFAULT
         set(value) {
             if (value < 0)
@@ -424,7 +424,7 @@ open class ActorWithBody : Actor() {
              * Drag of atmosphere
              * D = Cd (drag coefficient) * 0.5 * rho (density) * V^2 (velocity sqr) * A (area)
              */
-            val D: Vector2 = Vector2(veloX.magnSqr(), veloY.magnSqr()) * DRAG_COEFF * 0.5 * A// * tileDensityFluid.toDouble()
+            val D: Vector2 = Vector2(veloX.magnSqr(), veloY.magnSqr()) * dragCoefficient * 0.5 * A// * tileDensityFluid.toDouble()
 
             val V: Vector2 = (W - D) / mass * SI_TO_GAME_ACC
 
diff --git a/src/net/torvald/terrarum/gameactors/PossessedPlayerWrapper.kt b/src/net/torvald/terrarum/gameactors/PlayableActorWrapper.kt
similarity index 91%
rename from src/net/torvald/terrarum/gameactors/PossessedPlayerWrapper.kt
rename to src/net/torvald/terrarum/gameactors/PlayableActorWrapper.kt
index 9103089ac..b5be5506b 100644
--- a/src/net/torvald/terrarum/gameactors/PossessedPlayerWrapper.kt
+++ b/src/net/torvald/terrarum/gameactors/PlayableActorWrapper.kt
@@ -9,7 +9,7 @@ import org.newdawn.slick.Input
  * @param actor : here you 'snap in' the actor you wish to control
  * Created by minjaesong on 16-10-23.
  */
-class PossessedPlayerWrapper(val actor: ActorHumanoid) {
+class PlayableActorWrapper(val actor: ActorHumanoid) {
 
     init {
         if (actor !is Controllable)