diff --git a/src/net/torvald/terrarum/gameactors/ActorHumanoid.kt b/src/net/torvald/terrarum/gameactors/ActorHumanoid.kt
index 92bc7fc2e..3f3d2591b 100644
--- a/src/net/torvald/terrarum/gameactors/ActorHumanoid.kt
+++ b/src/net/torvald/terrarum/gameactors/ActorHumanoid.kt
@@ -464,7 +464,7 @@ open class ActorHumanoid(birth: GameDate, death: GameDate? = null)
             return timedJumpCharge
         }
 
-        if (jumping) {
+        if (jumping) {// && jumpable) {
             // increment jump counter
             if (jumpCounter < len) jumpCounter += 1
 
@@ -472,8 +472,13 @@ open class ActorHumanoid(birth: GameDate, death: GameDate? = null)
 
             jumpAcc = pwr * timedJumpCharge * JUMP_ACCELERATION_MOD * Math.sqrt(scale) // positive value
 
-            applyForce(Vector2(0.0, -jumpAcc))
+            walkY -= jumpAcc
         }
+        // not sure we need this...
+        /*else if (!jumpable) {
+            jumpable = true  // this is kind of like "semaphore", we toggle it now
+            grounded = false // just in case...
+        }*/
 
         // release "jump key" of AIs
         if (jumpCounter >= len && !isGamer) {
diff --git a/src/net/torvald/terrarum/gameactors/ActorWithSprite.kt b/src/net/torvald/terrarum/gameactors/ActorWithSprite.kt
index ad8bc8508..0952687d5 100644
--- a/src/net/torvald/terrarum/gameactors/ActorWithSprite.kt
+++ b/src/net/torvald/terrarum/gameactors/ActorWithSprite.kt
@@ -91,6 +91,8 @@ open class ActorWithSprite(renderOrder: ActorOrder, val immobileBody: Boolean =
         protected set(value) {
             controllerMoveDelta!!.y = value
         }
+    // not sure we need this...
+    //var jumpable = true // this is kind of like "semaphore"
 
     /**
      * Physical properties.
@@ -587,12 +589,22 @@ open class ActorWithSprite(renderOrder: ActorOrder, val immobileBody: Boolean =
      * prevents sticking to the ceiling
      */
     private fun hitAndForciblyReflectY() {
+        println("hitAndForciblyReflectY")
         // TODO HARK! I have changed veloX/Y to moveDelta.x/y
         if (moveDelta.y < 0) {
-            if (moveDelta.y.abs() * CEILING_HIT_ELASTICITY > A_PIXEL)
+            walkY = 0.0
+            if (moveDelta.y * CEILING_HIT_ELASTICITY < -A_PIXEL) {
                 moveDelta.y = -moveDelta.y * CEILING_HIT_ELASTICITY
-            else
-                moveDelta.y = moveDelta.y.sign() * -A_PIXEL
+            }
+            else {
+                moveDelta.y = A_PIXEL
+            }
+
+            // for more of a "bounce", you can assign zero if you don't like it
+            externalForce.y = moveDelta.y * CEILING_HIT_ELASTICITY
+            //externalForce.y = 0.0
+
+            nextHitbox.translatePosY(0.5)
         }
         else {
             throw Error("Check this out bitch (moveDelta.y = ${moveDelta.y})")