diff --git a/source/games/sw/src/game.h b/source/games/sw/src/game.h
index 5ea993c67..564583de6 100644
--- a/source/games/sw/src/game.h
+++ b/source/games/sw/src/game.h
@@ -724,6 +724,10 @@ struct PLAYER
     {
         PlayerNowPosition.Z = val;
     }
+    void posZadd(const double val)
+    {
+        PlayerNowPosition.Z += val;
+    }
 };
 
 extern PLAYER Player[MAX_SW_PLAYERS_REG+1];
diff --git a/source/games/sw/src/player.cpp b/source/games/sw/src/player.cpp
index 39dde8e03..c8e98b3f1 100644
--- a/source/games/sw/src/player.cpp
+++ b/source/games/sw/src/player.cpp
@@ -1486,7 +1486,7 @@ void DoPlayerSetWadeDepth(PLAYER* pp)
 void DoPlayerHeight(PLAYER* pp)
 {
     double diff = pp->PlayerNowPosition.Z - (pp->loz - PLAYER_HEIGHTF);
-    pp->PlayerNowPosition.Z -= diff * 0.375;
+    pp->posZadd(-diff * 0.375);
 }
 
 void DoPlayerJumpHeight(PLAYER* pp)
@@ -1504,7 +1504,7 @@ void DoPlayerJumpHeight(PLAYER* pp)
 void DoPlayerCrawlHeight(PLAYER* pp)
 {
     double diff = pp->PlayerNowPosition.Z - (pp->loz - PLAYER_CRAWL_HEIGHTF);
-    pp->PlayerNowPosition.Z -= diff * 0.375;
+    pp->posZadd(-diff * 0.375);
 }
 
 //---------------------------------------------------------------------------
@@ -2986,7 +2986,7 @@ void DoPlayerJump(PLAYER* pp)
         }
 
         // adjust height by jump speed
-        pp->PlayerNowPosition.Z += pp->jump_speed * JUMP_FACTOR;
+        pp->posZadd(pp->jump_speed * JUMP_FACTOR);
 
         // if player gets to close the ceiling while jumping
         if (PlayerCeilingHit(pp, pp->hiz + 4))
@@ -3060,7 +3060,7 @@ void DoPlayerForceJump(PLAYER* pp)
         }
 
         // adjust height by jump speed
-        pp->PlayerNowPosition.Z += pp->jump_speed * JUMP_FACTOR;
+        pp->posZadd(pp->jump_speed * JUMP_FACTOR);
 
         // if player gets to close the ceiling while jumping
         //if (pp->PlayerNowPositionz < pp->hiz + Z(4))
@@ -3161,7 +3161,7 @@ void DoPlayerFall(PLAYER* pp)
             pp->jump_speed = 4100;
 
         // adjust player height by jump speed
-        pp->PlayerNowPosition.Z += pp->jump_speed * JUMP_FACTOR;
+        pp->posZadd(pp->jump_speed * JUMP_FACTOR);
 
         if (pp->jump_speed > 2000)
         {
@@ -3227,7 +3227,7 @@ void DoPlayerFall(PLAYER* pp)
                 // this was causing the z to snap immediately
                 // changed it so it stays gradual
 
-                pp->PlayerNowPosition.Z += recoil_amnt;
+                pp->posZadd(recoil_amnt);
                 DoPlayerHeight(pp);
             }
 
@@ -3421,7 +3421,7 @@ void DoPlayerClimb(PLAYER* pp)
     // moving UP
     if (climbVel > 0)
     {
-        pp->PlayerNowPosition.Z -= climbVel;
+        pp->posZadd(-climbVel);
         pp->climb_ndx &= 1023;
 
         // if player gets to close the ceiling while climbing
@@ -3455,7 +3455,7 @@ void DoPlayerClimb(PLAYER* pp)
     // move DOWN
     if (climbVel < 0)
     {
-        pp->PlayerNowPosition.Z -= climbVel;
+        pp->posZadd(-climbVel);
         pp->climb_ndx &= 1023;
 
         // if you are touching the floor
@@ -3790,7 +3790,7 @@ void DoPlayerFly(PLAYER* pp)
 
     pp->z_speed *= FixedToFloat(58000);
 
-    pp->PlayerNowPosition.Z += pp->z_speed;
+    pp->posZadd(pp->z_speed);
 
     // Make the min distance from the ceiling/floor match bobbing amount
     // so the player never goes into the ceiling/floor
@@ -3990,7 +3990,7 @@ int PlayerCanDive(PLAYER* pp)
     {
         if (PlayerInDiveArea(pp))
         {
-            pp->PlayerNowPosition.Z += 20;
+            pp->posZadd(20);
             pp->z_speed = 20;
             pp->jump_speed = 0;
 
@@ -4357,7 +4357,7 @@ void DoPlayerWarpToSurface(PLAYER* pp)
     DoPlayerZrange(pp);
     DoPlayerSetWadeDepth(pp);
 
-    pp->PlayerNowPosition.Z -= pp->WadeDepth;
+    pp->posZadd(-pp->WadeDepth);
 
     pp->PlayerPrevPosition = pp->PlayerNowPosition;
 
@@ -4683,7 +4683,7 @@ void DoPlayerDive(PLAYER* pp)
     if (abs(pp->z_speed) < 1./16)
         pp->z_speed = 0;
 
-    pp->PlayerNowPosition.Z += pp->z_speed;
+    pp->posZadd(pp->z_speed);
 
     if (pp->z_speed < 0 && FAF_ConnectArea(pp->cursector))
     {
@@ -5583,7 +5583,7 @@ void DoPlayerDeathJump(PLAYER* pp)
         }
 
         // adjust height by jump speed
-        pp->PlayerNowPosition.Z += pp->jump_speed * JUMP_FACTOR;
+        pp->posZadd(pp->jump_speed * JUMP_FACTOR);
 
         // if player gets to close the ceiling while jumping
         //if (pp->posz < pp->hiz + Z(4))
@@ -5620,7 +5620,7 @@ void DoPlayerDeathFall(PLAYER* pp)
         pp->jump_speed += PLAYER_DEATH_GRAV;
 
         // adjust player height by jump speed
-        pp->PlayerNowPosition.Z += pp->jump_speed * JUMP_FACTOR;
+        pp->posZadd(pp->jump_speed * JUMP_FACTOR);
 
         if (pp->lo_sectp && (pp->lo_sectp->extra & SECTFX_SINK))
         {
@@ -6390,7 +6390,7 @@ void DoPlayerDeathDrown(PLAYER* pp)
 
         if ((pp->Flags & PF_FALLING))
         {
-            pp->PlayerNowPosition.Z += 2;
+            pp->posZadd(2);
             if (MoveSkip2 == 0)
                 actor->spr.pos.Z += 4;