diff --git a/chameleonic.p8 b/chameleonic.p8
index a711592..aabe1c0 100644
--- a/chameleonic.p8
+++ b/chameleonic.p8
@@ -544,12 +544,12 @@ function level:can_move(
  if player.rope then
   local chk=false
   local w,h=1.6,0.2
-  if (dmx==0) w,h=0.2,1.6
-
-  if (dmy==-1) rectx,recty=0.4,-0.8
-  if (dmy==1) rectx,recty=0.4,0.2
-  if (dmx==-1) rectx,recty=-0.8,0.4
-  if (dmx==1) rectx,recty=0.2,0.4
+  if dmx==0 then 
+    w,h=0.2,1.6
+  else
+    dmy = 0
+  end
+  rectx,recty=dmx*(0.4>>>dmx),dmy*(0.4>>>dmy)
 
   if (player.rope:collide_mrect(mx0+rectx,my0+recty,w,h,exclude_src,exclude_dst)) return false
  end