diff --git a/source/games/duke/src/funct.h b/source/games/duke/src/funct.h
index 2df95f938..b819d71b7 100644
--- a/source/games/duke/src/funct.h
+++ b/source/games/duke/src/funct.h
@@ -233,5 +233,6 @@ void nonsharedkeys(void);
 void apply_seasick(player_struct* p, double scalefactor);
 void calcviewpitch(player_struct* p, double factor);
 void sethorizon(int snum, int sb_snum, double factor, bool frominput = false);
+bool movementBlocked(int snum);
 
 END_DUKE_NS
diff --git a/source/games/duke/src/player.cpp b/source/games/duke/src/player.cpp
index 23a2dbf65..4e36fb43b 100644
--- a/source/games/duke/src/player.cpp
+++ b/source/games/duke/src/player.cpp
@@ -950,6 +950,38 @@ void playerAimDown(int snum, ESyncBits sb_snum)
 	}
 }
 
+//---------------------------------------------------------------------------
+//
+// split out so that the weapon check can be done right.
+//
+//---------------------------------------------------------------------------
+
+bool movementBlocked(int snum)
+{
+	auto p = &ps[snum];
+
+	auto blockingweapon = [=]()
+	{
+		if (isRR()) return false;
+		if (isWW2GI()) return aplWeaponWorksLike[p->curr_weapon][snum] == TRIPBOMB_WEAPON;
+		else return p->curr_weapon == TRIPBOMB_WEAPON;
+	};
+
+	auto weapondelay = [=]()
+	{
+		if (isWW2GI()) return aplWeaponFireDelay[p->curr_weapon][snum];
+		else return 4;
+	};
+
+	return (p->fist_incs ||
+		p->transporter_hold > 2 ||
+		p->hard_landing ||
+		p->access_incs > 0 ||
+		p->knee_incs > 0 ||
+		(blockingweapon() && p->kickback_pic > 1 && p->kickback_pic < weapondelay()));
+}
+
+
 //---------------------------------------------------------------------------
 //
 //
diff --git a/source/games/duke/src/player_d.cpp b/source/games/duke/src/player_d.cpp
index af8d5aa16..8d8f4feae 100644
--- a/source/games/duke/src/player_d.cpp
+++ b/source/games/duke/src/player_d.cpp
@@ -2789,13 +2789,7 @@ void processinput_d(int snum)
 
 	//Do the quick lefts and rights
 
-	if (p->fist_incs ||
-		p->transporter_hold > 2 ||
-		p->hard_landing ||
-		p->access_incs > 0 ||
-		p->knee_incs > 0 ||
-		(((!isWW2GI() && p->curr_weapon == TRIPBOMB_WEAPON) || (isWW2GI() && aplWeaponWorksLike[p->curr_weapon][snum] == TRIPBOMB_WEAPON)) &&
-				p->kickback_pic > 1 && p->kickback_pic < 4))
+	if (movementBlocked(snum))
 	{
 		doubvel = 0;
 		p->posxv = 0;
diff --git a/source/games/duke/src/player_r.cpp b/source/games/duke/src/player_r.cpp
index e3e0817f5..a137d3872 100644
--- a/source/games/duke/src/player_r.cpp
+++ b/source/games/duke/src/player_r.cpp
@@ -3698,11 +3698,7 @@ void processinput_r(int snum)
 
 	//Do the quick lefts and rights
 
-	if (p->fist_incs ||
-		p->transporter_hold > 2 ||
-		p->hard_landing ||
-		p->access_incs > 0 ||
-		p->knee_incs > 0)
+	if (movementBlocked(snum))
 	{
 		doubvel = 0;
 		p->posxv = 0;
diff --git a/source/games/duke/src/prediction.cpp b/source/games/duke/src/prediction.cpp
index 523b981e1..e18b7dad7 100644
--- a/source/games/duke/src/prediction.cpp
+++ b/source/games/duke/src/prediction.cpp
@@ -394,14 +394,7 @@ void fakedomovethings(void)
 
         }
 
-        if ( p->fist_incs ||
-                     p->transporter_hold > 2 ||
-                     myhardlanding ||
-                     p->access_incs > 0 ||
-                     p->knee_incs > 0 ||
-                     (p->curr_weapon == TRIPBOMB_WEAPON &&
-                      p->kickback_pic > 1 &&
-                      p->kickback_pic < 4 ) )
+        if (movementBlocked(snum) || myhardlanding)
         {
                  doubvel = 0;
                  myxvel = 0;
diff --git a/source/games/duke/src/zz_player.cpp b/source/games/duke/src/zz_player.cpp
index 7bdfdb2d1..8b5fb28c6 100644
--- a/source/games/duke/src/zz_player.cpp
+++ b/source/games/duke/src/zz_player.cpp
@@ -63,23 +63,20 @@ enum inputlock_t
 //
 //---------------------------------------------------------------------------
 
-static int P_CheckLockedMovement(int const playerNum)
+static int P_CheckLockedMovement(int snum)
 {
-    auto const pPlayer = &ps[playerNum];
+    auto p = &ps[snum];
 
-    if (sprite[pPlayer->i].extra <= 0 || (pPlayer->dead_flag && !ud.god) || pPlayer->fist_incs || pPlayer->transporter_hold > 2 || pPlayer->hard_landing || pPlayer->access_incs > 0
-        || pPlayer->knee_incs > 0
-        || (PWEAPON(playerNum, pPlayer->curr_weapon, WorksLike) == TRIPBOMB_WEAPON && pPlayer->kickback_pic > 1
-            && pPlayer->kickback_pic < PWEAPON(playerNum, pPlayer->curr_weapon, FireDelay)))
+    if (sprite[p->i].extra <= 0 || (p->dead_flag && !ud.god) || movementBlocked(snum))
         return IL_NOTHING;
 
-    if (pPlayer->on_crane >= 0)
+    if (p->on_crane >= 0)
         return IL_NOMOVE | IL_NOANGLE;
 
-    if (pPlayer->newowner != -1)
+    if (p->newowner != -1)
         return IL_NOANGLE | IL_NOHORIZ;
 
-    if (pPlayer->return_to_center > 0)
+    if (p->return_to_center > 0)
         return IL_NOHORIZ;
 
     return 0;