diff --git a/polymer/eduke32/source/lunatic/control.lua b/polymer/eduke32/source/lunatic/control.lua
index 3c438251d..b49e9a758 100644
--- a/polymer/eduke32/source/lunatic/control.lua
+++ b/polymer/eduke32/source/lunatic/control.lua
@@ -1498,6 +1498,17 @@ function _movesprite(spritenum, x, y, z, cliptype)
     return ffiC.A_MoveSprite(spritenum, vel, cliptype)
 end
 
+-- Also known as A_SetSprite().
+function _ssp(i, cliptype)
+    check_sprite_idx(i)
+    local spr = ffiC.sprite[i]
+    local vec = spr.xvel * bangvec(spr.ang)  -- XXX: slightly different rounding?
+    local ivec = vec:toivec3()
+    ivec.z = spr.zvel
+
+    return (ffiC.A_MoveSprite(i, ivec, cliptype)==0)
+end
+
 -- CON's 'setsprite' function on top of the Lunatic-provided ones.
 -- (Lunatic's sprite setting functions have slightly different semantics.)
 local updatesect = sprite.updatesect
diff --git a/polymer/eduke32/source/lunatic/lunacon.lua b/polymer/eduke32/source/lunatic/lunacon.lua
index 19f8a700d..2623673ad 100644
--- a/polymer/eduke32/source/lunatic/lunacon.lua
+++ b/polymer/eduke32/source/lunatic/lunacon.lua
@@ -303,7 +303,7 @@ local function new_initial_codetab()
         "local _div, _mod, _mulTR, _mulWR = _con._div, _con._mod, _con._mulTR, _con._mulWR",
         "local _band, _bor, _bxor = _bit.band, _bit.bor, _bit.bxor",
         "local _lsh, _rsh, _arsh = _bit.lshift, _bit.rshift, _bit.arshift",
-        "local _setsprite = _con._setsprite",
+        "local _setsprite,_ssp = _con._setsprite,_con._ssp",
 
         -- * CON "states" (subroutines) and
         -- * Switch function table, indexed by global switch sequence number:
@@ -2751,7 +2751,7 @@ local Cinner = {
     spriteflags = cmd(R)  -- also see outer
         / ACS".flags=%1",
     ssp = cmd(R,R)
-        / handle.NYI,
+        / "_ssp(%1,%2)",
     setsprite = cmd(R,R,R,R)
         / "_setsprite(%1,_IV(1,%2,%3,%4))",
     updatesector = cmd(R,R,W)
diff --git a/polymer/eduke32/source/lunatic/test/rotfixed_actor.con b/polymer/eduke32/source/lunatic/test/rotfixed_actor.con
index 9d76ba03c..710db4067 100644
--- a/polymer/eduke32/source/lunatic/test/rotfixed_actor.con
+++ b/polymer/eduke32/source/lunatic/test/rotfixed_actor.con
@@ -42,3 +42,15 @@ eventloadactor GPSPEED
     mulvar ra_temp 4
     setactor[THISACTOR].lotag ra_temp
 enda
+
+gamevar ii 0 0
+onevent EVENT_PROCESSINPUT
+    setvar ii 0
+    whilevarvarn ii MAXSPRITES
+    {
+        ifvare sprite[ii].picnum 58  // space suit
+            ssp ii CLIPMASK0
+
+        addvar ii 1
+    }
+endevent